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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | mjames | 1 | /** |
| 2 | ****************************************************************************** |
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| 3 | * @file stm32f1xx_hal_usart.c |
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| 4 | * @author MCD Application Team |
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| 5 | * @version V1.0.1 |
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| 6 | * @date 31-July-2015 |
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| 7 | * @brief USART HAL module driver. |
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| 8 | * This file provides firmware functions to manage the following |
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| 9 | * functionalities of the Universal Synchronous Asynchronous Receiver Transmitter (USART) peripheral: |
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| 10 | * + Initialization and de-initialization functions |
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| 11 | * + IO operation functions |
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| 12 | * + Peripheral Control functions |
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| 13 | * + Peripheral State and Errors functions |
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| 14 | @verbatim |
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| 15 | ============================================================================== |
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| 16 | ##### How to use this driver ##### |
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| 17 | ============================================================================== |
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| 18 | [..] |
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| 19 | The USART HAL driver can be used as follows: |
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| 20 | |||
| 21 | (#) Declare a USART_HandleTypeDef handle structure. |
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| 22 | (#) Initialize the USART low level resources by implementing the HAL_USART_MspInit() API: |
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| 23 | (##) Enable the USARTx interface clock. |
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| 24 | (##) USART pins configuration: |
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| 25 | (+++) Enable the clock for the USART GPIOs. |
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| 26 | (+++) Configure the USART pins (TX as alternate function pull-up, RX as alternate function Input). |
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| 27 | (##) NVIC configuration if you need to use interrupt process (HAL_USART_Transmit_IT(), |
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| 28 | HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs): |
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| 29 | (+++) Configure the USARTx interrupt priority. |
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| 30 | (+++) Enable the NVIC USART IRQ handle. |
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| 31 | (##) DMA Configuration if you need to use DMA process (HAL_USART_Transmit_DMA() |
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| 32 | HAL_USART_Receive_DMA() and HAL_USART_TransmitReceive_DMA() APIs): |
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| 33 | (+++) Declare a DMA handle structure for the Tx/Rx channel. |
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| 34 | (+++) Enable the DMAx interface clock. |
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| 35 | (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters. |
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| 36 | (+++) Configure the DMA Tx/Rx channel. |
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| 37 | (+++) Associate the initilalized DMA handle to the USART DMA Tx/Rx handle. |
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| 38 | (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx channel. |
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| 39 | (+++) Configure the USARTx interrupt priority and enable the NVIC USART IRQ handle |
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| 40 | (used for last byte sending completion detection in DMA non circular mode) |
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| 41 | |||
| 42 | (#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware |
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| 43 | flow control and Mode(Receiver/Transmitter) in the husart Init structure. |
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| 44 | |||
| 45 | (#) Initialize the USART registers by calling the HAL_USART_Init() API: |
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| 46 | (++) These APIs configures also the low level Hardware GPIO, CLOCK, CORTEX...etc) |
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| 47 | by calling the customed HAL_USART_MspInit(&husart) API. |
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| 48 | |||
| 49 | -@@- The specific USART interrupts (Transmission complete interrupt, |
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| 50 | RXNE interrupt and Error Interrupts) will be managed using the macros |
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| 51 | __HAL_USART_ENABLE_IT() and __HAL_USART_DISABLE_IT() inside the transmit and receive process. |
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| 52 | |||
| 53 | (#) Three operation modes are available within this driver : |
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| 54 | |||
| 55 | *** Polling mode IO operation *** |
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| 56 | ================================= |
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| 57 | [..] |
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| 58 | (+) Send an amount of data in blocking mode using HAL_USART_Transmit() |
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| 59 | (+) Receive an amount of data in blocking mode using HAL_USART_Receive() |
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| 60 | |||
| 61 | *** Interrupt mode IO operation *** |
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| 62 | =================================== |
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| 63 | [..] |
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| 64 | (+) Send an amount of data in non blocking mode using HAL_USART_Transmit_IT() |
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| 65 | (+) At transmission end of transfer HAL_USART_TxCpltCallback is executed and user can |
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| 66 | add his own code by customization of function pointer HAL_USART_TxCpltCallback |
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| 67 | (+) Receive an amount of data in non blocking mode using HAL_USART_Receive_IT() |
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| 68 | (+) At reception end of transfer HAL_USART_RxCpltCallback is executed and user can |
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| 69 | add his own code by customization of function pointer HAL_USART_RxCpltCallback |
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| 70 | (+) In case of transfer Error, HAL_USART_ErrorCallback() function is executed and user can |
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| 71 | add his own code by customization of function pointer HAL_USART_ErrorCallback |
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| 72 | |||
| 73 | *** DMA mode IO operation *** |
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| 74 | ============================== |
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| 75 | [..] |
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| 76 | (+) Send an amount of data in non blocking mode (DMA) using HAL_USART_Transmit_DMA() |
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| 77 | (+) At transmission end of half transfer HAL_USART_TxHalfCpltCallback is executed and user can |
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| 78 | add his own code by customization of function pointer HAL_USART_TxHalfCpltCallback |
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| 79 | (+) At transmission end of transfer HAL_USART_TxCpltCallback is executed and user can |
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| 80 | add his own code by customization of function pointer HAL_USART_TxCpltCallback |
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| 81 | (+) Receive an amount of data in non blocking mode (DMA) using HAL_USART_Receive_DMA() |
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| 82 | (+) At reception end of half transfer HAL_USART_RxHalfCpltCallback is executed and user can |
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| 83 | add his own code by customization of function pointer HAL_USART_RxHalfCpltCallback |
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| 84 | (+) At reception end of transfer HAL_USART_RxCpltCallback is executed and user can |
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| 85 | add his own code by customization of function pointer HAL_USART_RxCpltCallback |
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| 86 | (+) In case of transfer Error, HAL_USART_ErrorCallback() function is executed and user can |
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| 87 | add his own code by customization of function pointer HAL_USART_ErrorCallback |
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| 88 | (+) Pause the DMA Transfer using HAL_USART_DMAPause() |
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| 89 | (+) Resume the DMA Transfer using HAL_USART_DMAResume() |
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| 90 | (+) Stop the DMA Transfer using HAL_USART_DMAStop() |
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| 91 | |||
| 92 | *** USART HAL driver macros list *** |
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| 93 | ============================================= |
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| 94 | [..] |
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| 95 | Below the list of most used macros in USART HAL driver. |
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| 96 | |||
| 97 | (+) __HAL_USART_ENABLE: Enable the USART peripheral |
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| 98 | (+) __HAL_USART_DISABLE: Disable the USART peripheral |
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| 99 | (+) __HAL_USART_GET_FLAG : Check whether the specified USART flag is set or not |
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| 100 | (+) __HAL_USART_CLEAR_FLAG : Clear the specified USART pending flag |
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| 101 | (+) __HAL_USART_ENABLE_IT: Enable the specified USART interrupt |
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| 102 | (+) __HAL_USART_DISABLE_IT: Disable the specified USART interrupt |
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| 103 | (+) __HAL_USART_GET_IT_SOURCE: Check whether the specified USART interrupt has occurred or not |
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| 104 | |||
| 105 | [..] |
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| 106 | (@) You can refer to the USART HAL driver header file for more useful macros |
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| 107 | |||
| 108 | @endverbatim |
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| 109 | ****************************************************************************** |
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| 110 | * @attention |
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| 111 | * |
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| 112 | * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2> |
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| 113 | * |
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| 114 | * Redistribution and use in source and binary forms, with or without modification, |
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| 115 | * are permitted provided that the following conditions are met: |
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| 116 | * 1. Redistributions of source code must retain the above copyright notice, |
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| 117 | * this list of conditions and the following disclaimer. |
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| 118 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
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| 119 | * this list of conditions and the following disclaimer in the documentation |
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| 120 | * and/or other materials provided with the distribution. |
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| 121 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
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| 122 | * may be used to endorse or promote products derived from this software |
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| 123 | * without specific prior written permission. |
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| 124 | * |
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| 125 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 126 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 127 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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| 128 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
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| 129 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 130 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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| 131 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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| 132 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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| 133 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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| 134 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 135 | * |
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| 136 | ****************************************************************************** |
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| 137 | */ |
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| 138 | |||
| 139 | /* Includes ------------------------------------------------------------------*/ |
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| 140 | #include "stm32f1xx_hal.h" |
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| 141 | |||
| 142 | /** @addtogroup STM32F1xx_HAL_Driver |
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| 143 | * @{ |
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| 144 | */ |
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| 145 | |||
| 146 | /** @defgroup USART USART |
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| 147 | * @brief HAL USART Synchronous module driver |
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| 148 | * @{ |
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| 149 | */ |
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| 150 | #ifdef HAL_USART_MODULE_ENABLED |
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| 151 | /* Private typedef -----------------------------------------------------------*/ |
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| 152 | /* Private define ------------------------------------------------------------*/ |
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| 153 | /** @defgroup USART_Private_Constants USART Private Constants |
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| 154 | * @{ |
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| 155 | */ |
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| 156 | #define DUMMY_DATA 0xFFFF |
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| 157 | /** |
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| 158 | * @} |
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| 159 | */ |
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| 160 | |||
| 161 | /* Private macros --------------------------------------------------------*/ |
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| 162 | /* Private variables ---------------------------------------------------------*/ |
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| 163 | /* Private function prototypes -----------------------------------------------*/ |
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| 164 | /** @addtogroup USART_Private_Functions USART Private Functions |
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| 165 | * @{ |
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| 166 | */ |
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| 167 | static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart); |
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| 168 | static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart); |
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| 169 | static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart); |
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| 170 | static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart); |
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| 171 | static void USART_SetConfig (USART_HandleTypeDef *husart); |
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| 172 | static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma); |
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| 173 | static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma); |
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| 174 | static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma); |
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| 175 | static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma); |
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| 176 | static void USART_DMAError(DMA_HandleTypeDef *hdma); |
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| 177 | static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Timeout); |
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| 178 | /** |
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| 179 | * @} |
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| 180 | */ |
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| 181 | |||
| 182 | /* Exported functions ---------------------------------------------------------*/ |
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| 183 | |||
| 184 | |||
| 185 | /** @defgroup USART_Exported_Functions USART Exported Functions |
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| 186 | * @{ |
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| 187 | */ |
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| 188 | |||
| 189 | /** @defgroup USART_Exported_Functions_Group1 Initialization and de-initialization functions |
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| 190 | * @brief Initialization and Configuration functions |
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| 191 | * |
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| 192 | @verbatim |
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| 193 | ============================================================================== |
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| 194 | ##### Initialization and Configuration functions ##### |
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| 195 | ============================================================================== |
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| 196 | [..] |
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| 197 | This subsection provides a set of functions allowing to initialize the USART |
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| 198 | in asynchronous and in synchronous modes. |
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| 199 | (+) For the asynchronous mode only these parameters can be configured: |
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| 200 | (++) Baud Rate |
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| 201 | (++) Word Length |
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| 202 | (++) Stop Bit |
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| 203 | (++) Parity: If the parity is enabled, then the MSB bit of the data written |
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| 204 | in the data register is transmitted but is changed by the parity bit. |
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| 205 | Depending on the frame length defined by the M bit (8-bits or 9-bits), |
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| 206 | the possible USART frame formats are as listed in the following table: |
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| 207 | (+++) +-------------------------------------------------------------+ |
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| 208 | (+++) | M bit | PCE bit | USART frame | |
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| 209 | (+++) |---------------------|---------------------------------------| |
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| 210 | (+++) | 0 | 0 | | SB | 8 bit data | STB | | |
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| 211 | (+++) |---------|-----------|---------------------------------------| |
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| 212 | (+++) | 0 | 1 | | SB | 7 bit data | PB | STB | | |
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| 213 | (+++) |---------|-----------|---------------------------------------| |
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| 214 | (+++) | 1 | 0 | | SB | 9 bit data | STB | | |
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| 215 | (+++) |---------|-----------|---------------------------------------| |
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| 216 | (+++) | 1 | 1 | | SB | 8 bit data | PB | STB | | |
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| 217 | (+++) +-------------------------------------------------------------+ |
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| 218 | (++) USART polarity |
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| 219 | (++) USART phase |
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| 220 | (++) USART LastBit |
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| 221 | (++) Receiver/transmitter modes |
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| 222 | |||
| 223 | [..] |
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| 224 | The HAL_USART_Init() function follows the USART synchronous configuration |
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| 225 | procedure (details for the procedure are available in reference manuals |
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| 226 | (RM0008 for STM32F10Xxx MCUs and RM0041 for STM32F100xx MCUs)). |
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| 227 | |||
| 228 | @endverbatim |
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| 229 | * @{ |
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| 230 | */ |
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| 231 | |||
| 232 | /** |
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| 233 | * @brief Initializes the USART mode according to the specified |
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| 234 | * parameters in the USART_InitTypeDef and create the associated handle. |
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| 235 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
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| 236 | * the configuration information for the specified USART module. |
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| 237 | * @retval HAL status |
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| 238 | */ |
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| 239 | HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart) |
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| 240 | { |
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| 241 | /* Check the USART handle allocation */ |
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| 242 | if(husart == NULL) |
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| 243 | { |
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| 244 | return HAL_ERROR; |
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| 245 | } |
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| 246 | |||
| 247 | /* Check the parameters */ |
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| 248 | assert_param(IS_USART_INSTANCE(husart->Instance)); |
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| 249 | |||
| 250 | if(husart->State == HAL_USART_STATE_RESET) |
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| 251 | { |
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| 252 | /* Allocate lock resource and initialize it */ |
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| 253 | husart->Lock = HAL_UNLOCKED; |
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| 254 | |||
| 255 | /* Init the low level hardware */ |
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| 256 | HAL_USART_MspInit(husart); |
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| 257 | } |
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| 258 | |||
| 259 | husart->State = HAL_USART_STATE_BUSY; |
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| 260 | |||
| 261 | /* Set the USART Communication parameters */ |
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| 262 | USART_SetConfig(husart); |
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| 263 | |||
| 264 | /* In USART mode, the following bits must be kept cleared: |
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| 265 | - LINEN bit in the USART_CR2 register |
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| 266 | - HDSEL, SCEN and IREN bits in the USART_CR3 register */ |
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| 267 | CLEAR_BIT(husart->Instance->CR2, USART_CR2_LINEN); |
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| 268 | CLEAR_BIT(husart->Instance->CR3, (USART_CR3_IREN | USART_CR3_SCEN | USART_CR3_HDSEL)); |
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| 269 | |||
| 270 | /* Enable the Peripheral */ |
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| 271 | __HAL_USART_ENABLE(husart); |
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| 272 | |||
| 273 | /* Initialize the USART state */ |
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| 274 | husart->ErrorCode = HAL_USART_ERROR_NONE; |
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| 275 | husart->State= HAL_USART_STATE_READY; |
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| 276 | |||
| 277 | return HAL_OK; |
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| 278 | } |
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| 279 | |||
| 280 | /** |
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| 281 | * @brief DeInitializes the USART peripheral. |
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| 282 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
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| 283 | * the configuration information for the specified USART module. |
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| 284 | * @retval HAL status |
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| 285 | */ |
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| 286 | HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart) |
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| 287 | { |
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| 288 | /* Check the USART handle allocation */ |
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| 289 | if(husart == NULL) |
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| 290 | { |
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| 291 | return HAL_ERROR; |
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| 292 | } |
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| 293 | |||
| 294 | /* Check the parameters */ |
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| 295 | assert_param(IS_USART_INSTANCE(husart->Instance)); |
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| 296 | |||
| 297 | husart->State = HAL_USART_STATE_BUSY; |
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| 298 | |||
| 299 | /* Disable the Peripheral */ |
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| 300 | __HAL_USART_DISABLE(husart); |
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| 301 | |||
| 302 | /* DeInit the low level hardware */ |
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| 303 | HAL_USART_MspDeInit(husart); |
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| 304 | |||
| 305 | husart->ErrorCode = HAL_USART_ERROR_NONE; |
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| 306 | husart->State = HAL_USART_STATE_RESET; |
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| 307 | |||
| 308 | /* Release Lock */ |
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| 309 | __HAL_UNLOCK(husart); |
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| 310 | |||
| 311 | return HAL_OK; |
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| 312 | } |
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| 313 | |||
| 314 | /** |
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| 315 | * @brief USART MSP Init. |
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| 316 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
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| 317 | * the configuration information for the specified USART module. |
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| 318 | * @retval None |
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| 319 | */ |
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| 320 | __weak void HAL_USART_MspInit(USART_HandleTypeDef *husart) |
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| 321 | { |
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| 322 | /* NOTE: This function should not be modified, when the callback is needed, |
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| 323 | the HAL_USART_MspInit can be implemented in the user file |
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| 324 | */ |
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| 325 | } |
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| 326 | |||
| 327 | /** |
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| 328 | * @brief USART MSP DeInit. |
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| 329 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
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| 330 | * the configuration information for the specified USART module. |
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| 331 | * @retval None |
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| 332 | */ |
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| 333 | __weak void HAL_USART_MspDeInit(USART_HandleTypeDef *husart) |
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| 334 | { |
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| 335 | /* NOTE: This function should not be modified, when the callback is needed, |
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| 336 | the HAL_USART_MspDeInit can be implemented in the user file |
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| 337 | */ |
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| 338 | } |
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| 339 | |||
| 340 | /** |
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| 341 | * @} |
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| 342 | */ |
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| 343 | |||
| 344 | /** @defgroup USART_Exported_Functions_Group2 IO operation functions |
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| 345 | * @brief USART Transmit and Receive functions |
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| 346 | * |
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| 347 | @verbatim |
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| 348 | ============================================================================== |
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| 349 | ##### IO operation functions ##### |
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| 350 | ============================================================================== |
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| 351 | [..] |
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| 352 | This subsection provides a set of functions allowing to manage the USART synchronous |
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| 353 | data transfers. |
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| 354 | |||
| 355 | [..] |
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| 356 | The USART supports master mode only: it cannot receive or send data related to an input |
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| 357 | clock (SCLK is always an output). |
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| 358 | |||
| 359 | (#) There are two modes of transfer: |
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| 360 | (++) Blocking mode: The communication is performed in polling mode. |
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| 361 | The HAL status of all data processing is returned by the same function |
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| 362 | after finishing transfer. |
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| 363 | (++) No-Blocking mode: The communication is performed using Interrupts |
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| 364 | or DMA, These API's return the HAL status. |
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| 365 | The end of the data processing will be indicated through the |
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| 366 | dedicated USART IRQ when using Interrupt mode or the DMA IRQ when |
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| 367 | using DMA mode. |
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| 368 | The HAL_USART_TxCpltCallback(), HAL_USART_RxCpltCallback() and HAL_USART_TxRxCpltCallback() |
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| 369 | user callbacks |
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| 370 | will be executed respectively at the end of the transmit or Receive process |
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| 371 | The HAL_USART_ErrorCallback() user callback will be executed when a communication |
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| 372 | error is detected |
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| 373 | |||
| 374 | (#) Blocking mode APIs are : |
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| 375 | (++) HAL_USART_Transmit() in simplex mode |
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| 376 | (++) HAL_USART_Receive() in full duplex receive only |
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| 377 | (++) HAL_USART_TransmitReceive() in full duplex mode |
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| 378 | |||
| 379 | (#) Non Blocking mode APIs with Interrupt are : |
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| 380 | (++) HAL_USART_Transmit_IT()in simplex mode |
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| 381 | (++) HAL_USART_Receive_IT() in full duplex receive only |
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| 382 | (++) HAL_USART_TransmitReceive_IT() in full duplex mode |
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| 383 | (++) HAL_USART_IRQHandler() |
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| 384 | |||
| 385 | (#) Non Blocking mode functions with DMA are : |
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| 386 | (++) HAL_USART_Transmit_DMA()in simplex mode |
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| 387 | (++) HAL_USART_Receive_DMA() in full duplex receive only |
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| 388 | (++) HAL_USART_TransmitReceive_DMA() in full duplex mode |
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| 389 | (++) HAL_USART_DMAPause() |
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| 390 | (++) HAL_USART_DMAResume() |
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| 391 | (++) HAL_USART_DMAStop() |
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| 392 | |||
| 393 | (#) A set of Transfer Complete Callbacks are provided in non Blocking mode: |
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| 394 | (++) HAL_USART_TxHalfCpltCallback() |
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| 395 | (++) HAL_USART_TxCpltCallback() |
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| 396 | (++) HAL_USART_RxHalfCpltCallback() |
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| 397 | (++) HAL_USART_RxCpltCallback() |
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| 398 | (++) HAL_USART_ErrorCallback() |
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| 399 | (++) HAL_USART_TxRxCpltCallback() |
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| 400 | |||
| 401 | @endverbatim |
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| 402 | * @{ |
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| 403 | */ |
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| 404 | |||
| 405 | /** |
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| 406 | * @brief Simplex Send an amount of data in blocking mode. |
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| 407 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
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| 408 | * the configuration information for the specified USART module. |
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| 409 | * @param pTxData: Pointer to data buffer |
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| 410 | * @param Size: Amount of data to be sent |
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| 411 | * @param Timeout: Timeout duration |
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| 412 | * @retval HAL status |
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| 413 | */ |
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| 414 | HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size, uint32_t Timeout) |
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| 415 | { |
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| 416 | uint16_t* tmp=0; |
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| 417 | |||
| 418 | if(husart->State == HAL_USART_STATE_READY) |
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| 419 | { |
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| 420 | if((pTxData == NULL) || (Size == 0)) |
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| 421 | { |
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| 422 | return HAL_ERROR; |
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| 423 | } |
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| 424 | |||
| 425 | /* Process Locked */ |
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| 426 | __HAL_LOCK(husart); |
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| 427 | |||
| 428 | husart->ErrorCode = HAL_USART_ERROR_NONE; |
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| 429 | husart->State = HAL_USART_STATE_BUSY_TX; |
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| 430 | |||
| 431 | husart->TxXferSize = Size; |
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| 432 | husart->TxXferCount = Size; |
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| 433 | while(husart->TxXferCount > 0) |
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| 434 | { |
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| 435 | husart->TxXferCount--; |
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| 436 | if(husart->Init.WordLength == USART_WORDLENGTH_9B) |
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| 437 | { |
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| 438 | /* Wait for TC flag in order to write data in DR */ |
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| 439 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK) |
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| 440 | { |
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| 441 | return HAL_TIMEOUT; |
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| 442 | } |
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| 443 | tmp = (uint16_t*) pTxData; |
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| 444 | WRITE_REG(husart->Instance->DR, (*tmp & (uint16_t)0x01FF)); |
||
| 445 | if(husart->Init.Parity == USART_PARITY_NONE) |
||
| 446 | { |
||
| 447 | pTxData += 2; |
||
| 448 | } |
||
| 449 | else |
||
| 450 | { |
||
| 451 | pTxData += 1; |
||
| 452 | } |
||
| 453 | } |
||
| 454 | else |
||
| 455 | { |
||
| 456 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK) |
||
| 457 | { |
||
| 458 | return HAL_TIMEOUT; |
||
| 459 | } |
||
| 460 | WRITE_REG(husart->Instance->DR, (*pTxData++ & (uint8_t)0xFF)); |
||
| 461 | } |
||
| 462 | } |
||
| 463 | |||
| 464 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, Timeout) != HAL_OK) |
||
| 465 | { |
||
| 466 | return HAL_TIMEOUT; |
||
| 467 | } |
||
| 468 | |||
| 469 | husart->State = HAL_USART_STATE_READY; |
||
| 470 | |||
| 471 | /* Process Unlocked */ |
||
| 472 | __HAL_UNLOCK(husart); |
||
| 473 | |||
| 474 | return HAL_OK; |
||
| 475 | } |
||
| 476 | else |
||
| 477 | { |
||
| 478 | return HAL_BUSY; |
||
| 479 | } |
||
| 480 | } |
||
| 481 | |||
| 482 | /** |
||
| 483 | * @brief Full-Duplex Receive an amount of data in blocking mode. |
||
| 484 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 485 | * the configuration information for the specified USART module. |
||
| 486 | * @param pRxData: Pointer to data buffer |
||
| 487 | * @param Size: Amount of data to be received |
||
| 488 | * @param Timeout: Timeout duration |
||
| 489 | * @retval HAL status |
||
| 490 | */ |
||
| 491 | HAL_StatusTypeDef HAL_USART_Receive(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size, uint32_t Timeout) |
||
| 492 | { |
||
| 493 | uint16_t* tmp=0; |
||
| 494 | |||
| 495 | if(husart->State == HAL_USART_STATE_READY) |
||
| 496 | { |
||
| 497 | if((pRxData == NULL) || (Size == 0)) |
||
| 498 | { |
||
| 499 | return HAL_ERROR; |
||
| 500 | } |
||
| 501 | |||
| 502 | /* Process Locked */ |
||
| 503 | __HAL_LOCK(husart); |
||
| 504 | |||
| 505 | husart->ErrorCode = HAL_USART_ERROR_NONE; |
||
| 506 | husart->State = HAL_USART_STATE_BUSY_RX; |
||
| 507 | |||
| 508 | husart->RxXferSize = Size; |
||
| 509 | husart->RxXferCount = Size; |
||
| 510 | /* Check the remain data to be received */ |
||
| 511 | while(husart->RxXferCount > 0) |
||
| 512 | { |
||
| 513 | husart->RxXferCount--; |
||
| 514 | if(husart->Init.WordLength == USART_WORDLENGTH_9B) |
||
| 515 | { |
||
| 516 | /* Wait until TXE flag is set to send dummy byte in order to generate the clock for the slave to send data */ |
||
| 517 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK) |
||
| 518 | { |
||
| 519 | return HAL_TIMEOUT; |
||
| 520 | } |
||
| 521 | /* Send dummy byte in order to generate clock */ |
||
| 522 | WRITE_REG(husart->Instance->DR, (DUMMY_DATA & (uint16_t)0x01FF)); |
||
| 523 | |||
| 524 | /* Wait for RXNE Flag */ |
||
| 525 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK) |
||
| 526 | { |
||
| 527 | return HAL_TIMEOUT; |
||
| 528 | } |
||
| 529 | tmp = (uint16_t*) pRxData ; |
||
| 530 | if(husart->Init.Parity == USART_PARITY_NONE) |
||
| 531 | { |
||
| 532 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF); |
||
| 533 | pRxData +=2; |
||
| 534 | } |
||
| 535 | else |
||
| 536 | { |
||
| 537 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF); |
||
| 538 | pRxData +=1; |
||
| 539 | } |
||
| 540 | } |
||
| 541 | else |
||
| 542 | { |
||
| 543 | /* Wait until TXE flag is set to send dummy byte in order to generate the clock for the slave to send data */ |
||
| 544 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK) |
||
| 545 | { |
||
| 546 | return HAL_TIMEOUT; |
||
| 547 | } |
||
| 548 | |||
| 549 | /* Send Dummy Byte in order to generate clock */ |
||
| 550 | WRITE_REG(husart->Instance->DR, (DUMMY_DATA & (uint16_t)0x00FF)); |
||
| 551 | |||
| 552 | /* Wait until RXNE flag is set to receive the byte */ |
||
| 553 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK) |
||
| 554 | { |
||
| 555 | return HAL_TIMEOUT; |
||
| 556 | } |
||
| 557 | if(husart->Init.Parity == USART_PARITY_NONE) |
||
| 558 | { |
||
| 559 | /* Receive data */ |
||
| 560 | *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF); |
||
| 561 | } |
||
| 562 | else |
||
| 563 | { |
||
| 564 | /* Receive data */ |
||
| 565 | *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F); |
||
| 566 | } |
||
| 567 | |||
| 568 | } |
||
| 569 | } |
||
| 570 | |||
| 571 | husart->State = HAL_USART_STATE_READY; |
||
| 572 | |||
| 573 | /* Process Unlocked */ |
||
| 574 | __HAL_UNLOCK(husart); |
||
| 575 | |||
| 576 | return HAL_OK; |
||
| 577 | } |
||
| 578 | else |
||
| 579 | { |
||
| 580 | return HAL_BUSY; |
||
| 581 | } |
||
| 582 | } |
||
| 583 | |||
| 584 | /** |
||
| 585 | * @brief Full-Duplex Send receive an amount of data in full-duplex mode (blocking mode). |
||
| 586 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 587 | * the configuration information for the specified USART module. |
||
| 588 | * @param pTxData: Pointer to data transmitted buffer |
||
| 589 | * @param pRxData: Pointer to data received buffer |
||
| 590 | * @param Size: Amount of data to be sent |
||
| 591 | * @param Timeout: Timeout duration |
||
| 592 | * @retval HAL status |
||
| 593 | */ |
||
| 594 | HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout) |
||
| 595 | { |
||
| 596 | uint16_t* tmp=0; |
||
| 597 | |||
| 598 | if(husart->State == HAL_USART_STATE_READY) |
||
| 599 | { |
||
| 600 | if((pTxData == NULL) || (pRxData == NULL) || (Size == 0)) |
||
| 601 | { |
||
| 602 | return HAL_ERROR; |
||
| 603 | } |
||
| 604 | /* Process Locked */ |
||
| 605 | __HAL_LOCK(husart); |
||
| 606 | |||
| 607 | husart->ErrorCode = HAL_USART_ERROR_NONE; |
||
| 608 | husart->State = HAL_USART_STATE_BUSY_RX; |
||
| 609 | |||
| 610 | husart->RxXferSize = Size; |
||
| 611 | husart->TxXferSize = Size; |
||
| 612 | husart->TxXferCount = Size; |
||
| 613 | husart->RxXferCount = Size; |
||
| 614 | |||
| 615 | /* Check the remain data to be received */ |
||
| 616 | while(husart->TxXferCount > 0) |
||
| 617 | { |
||
| 618 | husart->TxXferCount--; |
||
| 619 | husart->RxXferCount--; |
||
| 620 | if(husart->Init.WordLength == USART_WORDLENGTH_9B) |
||
| 621 | { |
||
| 622 | /* Wait for TC flag in order to write data in DR */ |
||
| 623 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK) |
||
| 624 | { |
||
| 625 | return HAL_TIMEOUT; |
||
| 626 | } |
||
| 627 | tmp = (uint16_t*) pTxData; |
||
| 628 | WRITE_REG(husart->Instance->DR, (*tmp & (uint16_t)0x01FF)); |
||
| 629 | if(husart->Init.Parity == USART_PARITY_NONE) |
||
| 630 | { |
||
| 631 | pTxData += 2; |
||
| 632 | } |
||
| 633 | else |
||
| 634 | { |
||
| 635 | pTxData += 1; |
||
| 636 | } |
||
| 637 | |||
| 638 | /* Wait for RXNE Flag */ |
||
| 639 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK) |
||
| 640 | { |
||
| 641 | return HAL_TIMEOUT; |
||
| 642 | } |
||
| 643 | tmp = (uint16_t*) pRxData ; |
||
| 644 | if(husart->Init.Parity == USART_PARITY_NONE) |
||
| 645 | { |
||
| 646 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF); |
||
| 647 | pRxData += 2; |
||
| 648 | } |
||
| 649 | else |
||
| 650 | { |
||
| 651 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF); |
||
| 652 | pRxData += 1; |
||
| 653 | } |
||
| 654 | } |
||
| 655 | else |
||
| 656 | { |
||
| 657 | /* Wait for TC flag in order to write data in DR */ |
||
| 658 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK) |
||
| 659 | { |
||
| 660 | return HAL_TIMEOUT; |
||
| 661 | } |
||
| 662 | WRITE_REG(husart->Instance->DR, (*pTxData++ & (uint8_t)0x00FF)); |
||
| 663 | |||
| 664 | /* Wait for RXNE Flag */ |
||
| 665 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK) |
||
| 666 | { |
||
| 667 | return HAL_TIMEOUT; |
||
| 668 | } |
||
| 669 | if(husart->Init.Parity == USART_PARITY_NONE) |
||
| 670 | { |
||
| 671 | /* Receive data */ |
||
| 672 | *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF); |
||
| 673 | } |
||
| 674 | else |
||
| 675 | { |
||
| 676 | /* Receive data */ |
||
| 677 | *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F); |
||
| 678 | } |
||
| 679 | } |
||
| 680 | } |
||
| 681 | |||
| 682 | husart->State = HAL_USART_STATE_READY; |
||
| 683 | |||
| 684 | /* Process Unlocked */ |
||
| 685 | __HAL_UNLOCK(husart); |
||
| 686 | |||
| 687 | return HAL_OK; |
||
| 688 | } |
||
| 689 | else |
||
| 690 | { |
||
| 691 | return HAL_BUSY; |
||
| 692 | } |
||
| 693 | } |
||
| 694 | |||
| 695 | /** |
||
| 696 | * @brief Simplex Send an amount of data in non-blocking mode. |
||
| 697 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 698 | * the configuration information for the specified USART module. |
||
| 699 | * @param pTxData: Pointer to data buffer |
||
| 700 | * @param Size: Amount of data to be sent |
||
| 701 | * @retval HAL status |
||
| 702 | * @note The USART errors are not managed to avoid the overrun error. |
||
| 703 | */ |
||
| 704 | HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size) |
||
| 705 | { |
||
| 706 | if(husart->State == HAL_USART_STATE_READY) |
||
| 707 | { |
||
| 708 | if((pTxData == NULL) || (Size == 0)) |
||
| 709 | { |
||
| 710 | return HAL_ERROR; |
||
| 711 | } |
||
| 712 | |||
| 713 | /* Process Locked */ |
||
| 714 | __HAL_LOCK(husart); |
||
| 715 | |||
| 716 | husart->pTxBuffPtr = pTxData; |
||
| 717 | husart->TxXferSize = Size; |
||
| 718 | husart->TxXferCount = Size; |
||
| 719 | |||
| 720 | husart->ErrorCode = HAL_USART_ERROR_NONE; |
||
| 721 | husart->State = HAL_USART_STATE_BUSY_TX; |
||
| 722 | |||
| 723 | /* The USART Error Interrupts: (Frame error, Noise error, Overrun error) |
||
| 724 | are not managed by the USART transmit process to avoid the overrun interrupt |
||
| 725 | when the USART mode is configured for transmit and receive "USART_MODE_TX_RX" |
||
| 726 | to benefit for the frame error and noise interrupts the USART mode should be |
||
| 727 | configured only for transmit "USART_MODE_TX" |
||
| 728 | The __HAL_USART_ENABLE_IT(husart, USART_IT_ERR) can be used to enable the Frame error, |
||
| 729 | Noise error interrupt */ |
||
| 730 | |||
| 731 | /* Process Unlocked */ |
||
| 732 | __HAL_UNLOCK(husart); |
||
| 733 | |||
| 734 | /* Enable the USART Transmit Data Register Empty Interrupt */ |
||
| 735 | __HAL_USART_ENABLE_IT(husart, USART_IT_TXE); |
||
| 736 | |||
| 737 | return HAL_OK; |
||
| 738 | } |
||
| 739 | else |
||
| 740 | { |
||
| 741 | return HAL_BUSY; |
||
| 742 | } |
||
| 743 | } |
||
| 744 | |||
| 745 | /** |
||
| 746 | * @brief Simplex Receive an amount of data in non-blocking mode. |
||
| 747 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 748 | * the configuration information for the specified USART module. |
||
| 749 | * @param pRxData: Pointer to data buffer |
||
| 750 | * @param Size: Amount of data to be received |
||
| 751 | * @retval HAL status |
||
| 752 | */ |
||
| 753 | HAL_StatusTypeDef HAL_USART_Receive_IT(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size) |
||
| 754 | { |
||
| 755 | if(husart->State == HAL_USART_STATE_READY) |
||
| 756 | { |
||
| 757 | if((pRxData == NULL) || (Size == 0)) |
||
| 758 | { |
||
| 759 | return HAL_ERROR; |
||
| 760 | } |
||
| 761 | /* Process Locked */ |
||
| 762 | __HAL_LOCK(husart); |
||
| 763 | |||
| 764 | husart->pRxBuffPtr = pRxData; |
||
| 765 | husart->RxXferSize = Size; |
||
| 766 | husart->RxXferCount = Size; |
||
| 767 | |||
| 768 | husart->ErrorCode = HAL_USART_ERROR_NONE; |
||
| 769 | husart->State = HAL_USART_STATE_BUSY_RX; |
||
| 770 | |||
| 771 | /* Process Unlocked */ |
||
| 772 | __HAL_UNLOCK(husart); |
||
| 773 | |||
| 774 | /* Enable the USART Data Register not empty Interrupt */ |
||
| 775 | __HAL_USART_ENABLE_IT(husart, USART_IT_RXNE); |
||
| 776 | |||
| 777 | /* Enable the USART Parity Error Interrupt */ |
||
| 778 | __HAL_USART_ENABLE_IT(husart, USART_IT_PE); |
||
| 779 | |||
| 780 | /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */ |
||
| 781 | __HAL_USART_ENABLE_IT(husart, USART_IT_ERR); |
||
| 782 | |||
| 783 | /* Send dummy byte in order to generate the clock for the slave to send data */ |
||
| 784 | WRITE_REG(husart->Instance->DR, (DUMMY_DATA & (uint16_t)0x01FF)); |
||
| 785 | |||
| 786 | return HAL_OK; |
||
| 787 | } |
||
| 788 | else |
||
| 789 | { |
||
| 790 | return HAL_BUSY; |
||
| 791 | } |
||
| 792 | } |
||
| 793 | |||
| 794 | /** |
||
| 795 | * @brief Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking). |
||
| 796 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 797 | * the configuration information for the specified USART module. |
||
| 798 | * @param pTxData: Pointer to data transmitted buffer |
||
| 799 | * @param pRxData: Pointer to data received buffer |
||
| 800 | * @param Size: Amount of data to be received |
||
| 801 | * @retval HAL status |
||
| 802 | */ |
||
| 803 | HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size) |
||
| 804 | { |
||
| 805 | if(husart->State == HAL_USART_STATE_READY) |
||
| 806 | { |
||
| 807 | if((pTxData == NULL) || (pRxData == NULL) || (Size == 0)) |
||
| 808 | { |
||
| 809 | return HAL_ERROR; |
||
| 810 | } |
||
| 811 | /* Process Locked */ |
||
| 812 | __HAL_LOCK(husart); |
||
| 813 | |||
| 814 | husart->pRxBuffPtr = pRxData; |
||
| 815 | husart->RxXferSize = Size; |
||
| 816 | husart->RxXferCount = Size; |
||
| 817 | husart->pTxBuffPtr = pTxData; |
||
| 818 | husart->TxXferSize = Size; |
||
| 819 | husart->TxXferCount = Size; |
||
| 820 | |||
| 821 | husart->ErrorCode = HAL_USART_ERROR_NONE; |
||
| 822 | husart->State = HAL_USART_STATE_BUSY_TX_RX; |
||
| 823 | |||
| 824 | /* Process Unlocked */ |
||
| 825 | __HAL_UNLOCK(husart); |
||
| 826 | |||
| 827 | /* Enable the USART Data Register not empty Interrupt */ |
||
| 828 | __HAL_USART_ENABLE_IT(husart, USART_IT_RXNE); |
||
| 829 | |||
| 830 | /* Enable the USART Parity Error Interrupt */ |
||
| 831 | __HAL_USART_ENABLE_IT(husart, USART_IT_PE); |
||
| 832 | |||
| 833 | /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */ |
||
| 834 | __HAL_USART_ENABLE_IT(husart, USART_IT_ERR); |
||
| 835 | |||
| 836 | /* Enable the USART Transmit Data Register Empty Interrupt */ |
||
| 837 | __HAL_USART_ENABLE_IT(husart, USART_IT_TXE); |
||
| 838 | |||
| 839 | return HAL_OK; |
||
| 840 | } |
||
| 841 | else |
||
| 842 | { |
||
| 843 | return HAL_BUSY; |
||
| 844 | } |
||
| 845 | } |
||
| 846 | |||
| 847 | /** |
||
| 848 | * @brief Simplex Send an amount of data in non-blocking mode. |
||
| 849 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 850 | * the configuration information for the specified USART module. |
||
| 851 | * @param pTxData: Pointer to data buffer |
||
| 852 | * @param Size: Amount of data to be sent |
||
| 853 | * @retval HAL status |
||
| 854 | */ |
||
| 855 | HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size) |
||
| 856 | { |
||
| 857 | uint32_t *tmp=0; |
||
| 858 | |||
| 859 | if(husart->State == HAL_USART_STATE_READY) |
||
| 860 | { |
||
| 861 | if((pTxData == NULL) || (Size == 0)) |
||
| 862 | { |
||
| 863 | return HAL_ERROR; |
||
| 864 | } |
||
| 865 | /* Process Locked */ |
||
| 866 | __HAL_LOCK(husart); |
||
| 867 | |||
| 868 | husart->pTxBuffPtr = pTxData; |
||
| 869 | husart->TxXferSize = Size; |
||
| 870 | husart->TxXferCount = Size; |
||
| 871 | |||
| 872 | husart->ErrorCode = HAL_USART_ERROR_NONE; |
||
| 873 | husart->State = HAL_USART_STATE_BUSY_TX; |
||
| 874 | |||
| 875 | /* Set the USART DMA transfer complete callback */ |
||
| 876 | husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt; |
||
| 877 | |||
| 878 | /* Set the USART DMA Half transfer complete callback */ |
||
| 879 | husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt; |
||
| 880 | |||
| 881 | /* Set the DMA error callback */ |
||
| 882 | husart->hdmatx->XferErrorCallback = USART_DMAError; |
||
| 883 | |||
| 884 | /* Enable the USART transmit DMA channel */ |
||
| 885 | tmp = (uint32_t*)&pTxData; |
||
| 886 | HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size); |
||
| 887 | |||
| 888 | /* Clear the TC flag in the SR register by writing 0 to it */ |
||
| 889 | __HAL_USART_CLEAR_FLAG(husart, USART_FLAG_TC); |
||
| 890 | |||
| 891 | /* Enable the DMA transfer for transmit request by setting the DMAT bit |
||
| 892 | in the USART CR3 register */ |
||
| 893 | SET_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
||
| 894 | |||
| 895 | /* Process Unlocked */ |
||
| 896 | __HAL_UNLOCK(husart); |
||
| 897 | |||
| 898 | return HAL_OK; |
||
| 899 | } |
||
| 900 | else |
||
| 901 | { |
||
| 902 | return HAL_BUSY; |
||
| 903 | } |
||
| 904 | } |
||
| 905 | |||
| 906 | /** |
||
| 907 | * @brief Full-Duplex Receive an amount of data in non-blocking mode. |
||
| 908 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 909 | * the configuration information for the specified USART module. |
||
| 910 | * @param pRxData: Pointer to data buffer |
||
| 911 | * @param Size: Amount of data to be received |
||
| 912 | * @retval HAL status |
||
| 913 | * @note The USART DMA transmit channel must be configured in order to generate the clock for the slave. |
||
| 914 | * @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit. |
||
| 915 | */ |
||
| 916 | HAL_StatusTypeDef HAL_USART_Receive_DMA(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size) |
||
| 917 | { |
||
| 918 | uint32_t *tmp=0; |
||
| 919 | |||
| 920 | if(husart->State == HAL_USART_STATE_READY) |
||
| 921 | { |
||
| 922 | if((pRxData == NULL) || (Size == 0)) |
||
| 923 | { |
||
| 924 | return HAL_ERROR; |
||
| 925 | } |
||
| 926 | |||
| 927 | /* Process Locked */ |
||
| 928 | __HAL_LOCK(husart); |
||
| 929 | |||
| 930 | husart->pRxBuffPtr = pRxData; |
||
| 931 | husart->RxXferSize = Size; |
||
| 932 | husart->pTxBuffPtr = pRxData; |
||
| 933 | husart->TxXferSize = Size; |
||
| 934 | |||
| 935 | husart->ErrorCode = HAL_USART_ERROR_NONE; |
||
| 936 | husart->State = HAL_USART_STATE_BUSY_RX; |
||
| 937 | |||
| 938 | /* Set the USART DMA Rx transfer complete callback */ |
||
| 939 | husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt; |
||
| 940 | |||
| 941 | /* Set the USART DMA Half transfer complete callback */ |
||
| 942 | husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt; |
||
| 943 | |||
| 944 | /* Set the USART DMA Rx transfer error callback */ |
||
| 945 | husart->hdmarx->XferErrorCallback = USART_DMAError; |
||
| 946 | |||
| 947 | /* Enable the USART receive DMA channel */ |
||
| 948 | tmp = (uint32_t*)&pRxData; |
||
| 949 | HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t*)tmp, Size); |
||
| 950 | |||
| 951 | /* Enable the USART transmit DMA channel: the transmit channel is used in order |
||
| 952 | to generate in the non-blocking mode the clock to the slave device, |
||
| 953 | this mode isn't a simplex receive mode but a full-duplex receive one */ |
||
| 954 | HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size); |
||
| 955 | |||
| 956 | /* Clear the Overrun flag just before enabling the DMA Rx request: mandatory for the second transfer |
||
| 957 | when using the USART in circular mode */ |
||
| 958 | __HAL_USART_CLEAR_OREFLAG(husart); |
||
| 959 | |||
| 960 | /* Enable the DMA transfer for the receiver request by setting the DMAR bit |
||
| 961 | in the USART CR3 register */ |
||
| 962 | SET_BIT(husart->Instance->CR3, USART_CR3_DMAR); |
||
| 963 | |||
| 964 | /* Enable the DMA transfer for transmit request by setting the DMAT bit |
||
| 965 | in the USART CR3 register */ |
||
| 966 | SET_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
||
| 967 | |||
| 968 | /* Process Unlocked */ |
||
| 969 | __HAL_UNLOCK(husart); |
||
| 970 | |||
| 971 | return HAL_OK; |
||
| 972 | } |
||
| 973 | else |
||
| 974 | { |
||
| 975 | return HAL_BUSY; |
||
| 976 | } |
||
| 977 | } |
||
| 978 | |||
| 979 | /** |
||
| 980 | * @brief Full-Duplex Transmit Receive an amount of data in non-blocking mode. |
||
| 981 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 982 | * the configuration information for the specified USART module. |
||
| 983 | * @param pTxData: Pointer to data transmitted buffer |
||
| 984 | * @param pRxData: Pointer to data received buffer |
||
| 985 | * @param Size: Amount of data to be received |
||
| 986 | * @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit. |
||
| 987 | * @retval HAL status |
||
| 988 | */ |
||
| 989 | HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size) |
||
| 990 | { |
||
| 991 | uint32_t *tmp=0; |
||
| 992 | |||
| 993 | if(husart->State == HAL_USART_STATE_READY) |
||
| 994 | { |
||
| 995 | if((pTxData == NULL) || (pRxData == NULL) || (Size == 0)) |
||
| 996 | { |
||
| 997 | return HAL_ERROR; |
||
| 998 | } |
||
| 999 | /* Process Locked */ |
||
| 1000 | __HAL_LOCK(husart); |
||
| 1001 | |||
| 1002 | husart->pRxBuffPtr = pRxData; |
||
| 1003 | husart->RxXferSize = Size; |
||
| 1004 | husart->pTxBuffPtr = pTxData; |
||
| 1005 | husart->TxXferSize = Size; |
||
| 1006 | |||
| 1007 | husart->ErrorCode = HAL_USART_ERROR_NONE; |
||
| 1008 | husart->State = HAL_USART_STATE_BUSY_TX_RX; |
||
| 1009 | |||
| 1010 | /* Set the USART DMA Rx transfer complete callback */ |
||
| 1011 | husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt; |
||
| 1012 | |||
| 1013 | /* Set the USART DMA Half transfer complete callback */ |
||
| 1014 | husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt; |
||
| 1015 | |||
| 1016 | /* Set the USART DMA Tx transfer complete callback */ |
||
| 1017 | husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt; |
||
| 1018 | |||
| 1019 | /* Set the USART DMA Half transfer complete callback */ |
||
| 1020 | husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt; |
||
| 1021 | |||
| 1022 | /* Set the USART DMA Tx transfer error callback */ |
||
| 1023 | husart->hdmatx->XferErrorCallback = USART_DMAError; |
||
| 1024 | |||
| 1025 | /* Set the USART DMA Rx transfer error callback */ |
||
| 1026 | husart->hdmarx->XferErrorCallback = USART_DMAError; |
||
| 1027 | |||
| 1028 | /* Enable the USART receive DMA channel */ |
||
| 1029 | tmp = (uint32_t*)&pRxData; |
||
| 1030 | HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t*)tmp, Size); |
||
| 1031 | |||
| 1032 | /* Enable the USART transmit DMA channel */ |
||
| 1033 | tmp = (uint32_t*)&pTxData; |
||
| 1034 | HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size); |
||
| 1035 | |||
| 1036 | /* Clear the TC flag in the SR register by writing 0 to it */ |
||
| 1037 | __HAL_USART_CLEAR_FLAG(husart, USART_FLAG_TC); |
||
| 1038 | |||
| 1039 | /* Clear the Overrun flag: mandatory for the second transfer in circular mode */ |
||
| 1040 | __HAL_USART_CLEAR_OREFLAG(husart); |
||
| 1041 | |||
| 1042 | /* Enable the DMA transfer for the receiver request by setting the DMAR bit |
||
| 1043 | in the USART CR3 register */ |
||
| 1044 | SET_BIT(husart->Instance->CR3, USART_CR3_DMAR); |
||
| 1045 | |||
| 1046 | /* Enable the DMA transfer for transmit request by setting the DMAT bit |
||
| 1047 | in the USART CR3 register */ |
||
| 1048 | SET_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
||
| 1049 | |||
| 1050 | /* Process Unlocked */ |
||
| 1051 | __HAL_UNLOCK(husart); |
||
| 1052 | |||
| 1053 | return HAL_OK; |
||
| 1054 | } |
||
| 1055 | else |
||
| 1056 | { |
||
| 1057 | return HAL_BUSY; |
||
| 1058 | } |
||
| 1059 | } |
||
| 1060 | |||
| 1061 | /** |
||
| 1062 | * @brief Pauses the DMA Transfer. |
||
| 1063 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1064 | * the configuration information for the specified USART module. |
||
| 1065 | * @retval HAL status |
||
| 1066 | */ |
||
| 1067 | HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart) |
||
| 1068 | { |
||
| 1069 | /* Process Locked */ |
||
| 1070 | __HAL_LOCK(husart); |
||
| 1071 | |||
| 1072 | /* Disable the USART DMA Tx request */ |
||
| 1073 | CLEAR_BIT(husart->Instance->CR3, (uint32_t)(USART_CR3_DMAT)); |
||
| 1074 | |||
| 1075 | /* Process Unlocked */ |
||
| 1076 | __HAL_UNLOCK(husart); |
||
| 1077 | |||
| 1078 | return HAL_OK; |
||
| 1079 | } |
||
| 1080 | |||
| 1081 | /** |
||
| 1082 | * @brief Resumes the DMA Transfer. |
||
| 1083 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1084 | * the configuration information for the specified USART module. |
||
| 1085 | * @retval HAL status |
||
| 1086 | */ |
||
| 1087 | HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart) |
||
| 1088 | { |
||
| 1089 | /* Process Locked */ |
||
| 1090 | __HAL_LOCK(husart); |
||
| 1091 | |||
| 1092 | /* Enable the USART DMA Tx request */ |
||
| 1093 | SET_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
||
| 1094 | |||
| 1095 | /* Process Unlocked */ |
||
| 1096 | __HAL_UNLOCK(husart); |
||
| 1097 | |||
| 1098 | return HAL_OK; |
||
| 1099 | } |
||
| 1100 | |||
| 1101 | /** |
||
| 1102 | * @brief Stops the DMA Transfer. |
||
| 1103 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1104 | * the configuration information for the specified USART module. |
||
| 1105 | * @retval HAL status |
||
| 1106 | */ |
||
| 1107 | HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart) |
||
| 1108 | { |
||
| 1109 | /* The Lock is not implemented on this API to allow the user application |
||
| 1110 | to call the HAL USART API under callbacks HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback(): |
||
| 1111 | when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated |
||
| 1112 | and the correspond call back is executed HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback() |
||
| 1113 | */ |
||
| 1114 | |||
| 1115 | /* Abort the USART DMA Tx channel */ |
||
| 1116 | if(husart->hdmatx != NULL) |
||
| 1117 | { |
||
| 1118 | HAL_DMA_Abort(husart->hdmatx); |
||
| 1119 | } |
||
| 1120 | /* Abort the USART DMA Rx channel */ |
||
| 1121 | if(husart->hdmarx != NULL) |
||
| 1122 | { |
||
| 1123 | HAL_DMA_Abort(husart->hdmarx); |
||
| 1124 | } |
||
| 1125 | |||
| 1126 | /* Disable the USART Tx/Rx DMA requests */ |
||
| 1127 | CLEAR_BIT(husart->Instance->CR3, (USART_CR3_DMAT | USART_CR3_DMAR)); |
||
| 1128 | |||
| 1129 | husart->State = HAL_USART_STATE_READY; |
||
| 1130 | |||
| 1131 | return HAL_OK; |
||
| 1132 | } |
||
| 1133 | |||
| 1134 | /** |
||
| 1135 | * @brief This function handles USART interrupt request. |
||
| 1136 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1137 | * the configuration information for the specified USART module. |
||
| 1138 | * @retval None |
||
| 1139 | */ |
||
| 1140 | void HAL_USART_IRQHandler(USART_HandleTypeDef *husart) |
||
| 1141 | { |
||
| 1142 | uint32_t tmp_flag = 0, tmp_it_source = 0; |
||
| 1143 | |||
| 1144 | tmp_flag = __HAL_USART_GET_FLAG(husart, USART_FLAG_PE); |
||
| 1145 | tmp_it_source = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_PE); |
||
| 1146 | /* USART parity error interrupt occurred -----------------------------------*/ |
||
| 1147 | if((tmp_flag != RESET) && (tmp_it_source != RESET)) |
||
| 1148 | { |
||
| 1149 | __HAL_USART_CLEAR_PEFLAG(husart); |
||
| 1150 | husart->ErrorCode |= HAL_USART_ERROR_PE; |
||
| 1151 | } |
||
| 1152 | |||
| 1153 | tmp_flag = __HAL_USART_GET_FLAG(husart, USART_FLAG_FE); |
||
| 1154 | tmp_it_source = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_ERR); |
||
| 1155 | /* USART frame error interrupt occurred ------------------------------------*/ |
||
| 1156 | if((tmp_flag != RESET) && (tmp_it_source != RESET)) |
||
| 1157 | { |
||
| 1158 | __HAL_USART_CLEAR_FEFLAG(husart); |
||
| 1159 | husart->ErrorCode |= HAL_USART_ERROR_FE; |
||
| 1160 | } |
||
| 1161 | |||
| 1162 | tmp_flag = __HAL_USART_GET_FLAG(husart, USART_FLAG_NE); |
||
| 1163 | /* USART noise error interrupt occurred ------------------------------------*/ |
||
| 1164 | if((tmp_flag != RESET) && (tmp_it_source != RESET)) |
||
| 1165 | { |
||
| 1166 | __HAL_USART_CLEAR_NEFLAG(husart); |
||
| 1167 | husart->ErrorCode |= HAL_USART_ERROR_NE; |
||
| 1168 | } |
||
| 1169 | |||
| 1170 | tmp_flag = __HAL_USART_GET_FLAG(husart, USART_FLAG_ORE); |
||
| 1171 | /* USART Over-Run interrupt occurred ---------------------------------------*/ |
||
| 1172 | if((tmp_flag != RESET) && (tmp_it_source != RESET)) |
||
| 1173 | { |
||
| 1174 | __HAL_USART_CLEAR_OREFLAG(husart); |
||
| 1175 | husart->ErrorCode |= HAL_USART_ERROR_ORE; |
||
| 1176 | } |
||
| 1177 | |||
| 1178 | if(husart->ErrorCode != HAL_USART_ERROR_NONE) |
||
| 1179 | { |
||
| 1180 | /* Set the USART state ready to be able to start again the process */ |
||
| 1181 | husart->State = HAL_USART_STATE_READY; |
||
| 1182 | |||
| 1183 | HAL_USART_ErrorCallback(husart); |
||
| 1184 | } |
||
| 1185 | |||
| 1186 | tmp_flag = __HAL_USART_GET_FLAG(husart, USART_FLAG_RXNE); |
||
| 1187 | tmp_it_source = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_RXNE); |
||
| 1188 | /* USART in mode Receiver --------------------------------------------------*/ |
||
| 1189 | if((tmp_flag != RESET) && (tmp_it_source != RESET)) |
||
| 1190 | { |
||
| 1191 | if(husart->State == HAL_USART_STATE_BUSY_RX) |
||
| 1192 | { |
||
| 1193 | USART_Receive_IT(husart); |
||
| 1194 | } |
||
| 1195 | else |
||
| 1196 | { |
||
| 1197 | USART_TransmitReceive_IT(husart); |
||
| 1198 | } |
||
| 1199 | } |
||
| 1200 | |||
| 1201 | tmp_flag = __HAL_USART_GET_FLAG(husart, USART_FLAG_TXE); |
||
| 1202 | tmp_it_source = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_TXE); |
||
| 1203 | /* USART in mode Transmitter -----------------------------------------------*/ |
||
| 1204 | if((tmp_flag != RESET) && (tmp_it_source != RESET)) |
||
| 1205 | { |
||
| 1206 | if(husart->State == HAL_USART_STATE_BUSY_TX) |
||
| 1207 | { |
||
| 1208 | USART_Transmit_IT(husart); |
||
| 1209 | } |
||
| 1210 | else |
||
| 1211 | { |
||
| 1212 | USART_TransmitReceive_IT(husart); |
||
| 1213 | } |
||
| 1214 | } |
||
| 1215 | |||
| 1216 | tmp_flag = __HAL_USART_GET_FLAG(husart, USART_FLAG_TC); |
||
| 1217 | tmp_it_source = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_TC); |
||
| 1218 | /* USART in mode Transmitter (transmission end) -----------------------------*/ |
||
| 1219 | if((tmp_flag != RESET) && (tmp_it_source != RESET)) |
||
| 1220 | { |
||
| 1221 | USART_EndTransmit_IT(husart); |
||
| 1222 | } |
||
| 1223 | |||
| 1224 | } |
||
| 1225 | |||
| 1226 | |||
| 1227 | /** |
||
| 1228 | * @brief Tx Transfer completed callbacks. |
||
| 1229 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1230 | * the configuration information for the specified USART module. |
||
| 1231 | * @retval None |
||
| 1232 | */ |
||
| 1233 | __weak void HAL_USART_TxCpltCallback(USART_HandleTypeDef *husart) |
||
| 1234 | { |
||
| 1235 | /* NOTE: This function should not be modified, when the callback is needed, |
||
| 1236 | the HAL_USART_TxCpltCallback can be implemented in the user file |
||
| 1237 | */ |
||
| 1238 | } |
||
| 1239 | |||
| 1240 | /** |
||
| 1241 | * @brief Tx Half Transfer completed callbacks. |
||
| 1242 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1243 | * the configuration information for the specified USART module. |
||
| 1244 | * @retval None |
||
| 1245 | */ |
||
| 1246 | __weak void HAL_USART_TxHalfCpltCallback(USART_HandleTypeDef *husart) |
||
| 1247 | { |
||
| 1248 | /* NOTE: This function should not be modified, when the callback is needed, |
||
| 1249 | the HAL_USART_TxHalfCpltCallback can be implemented in the user file |
||
| 1250 | */ |
||
| 1251 | } |
||
| 1252 | |||
| 1253 | /** |
||
| 1254 | * @brief Rx Transfer completed callbacks. |
||
| 1255 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1256 | * the configuration information for the specified USART module. |
||
| 1257 | * @retval None |
||
| 1258 | */ |
||
| 1259 | __weak void HAL_USART_RxCpltCallback(USART_HandleTypeDef *husart) |
||
| 1260 | { |
||
| 1261 | /* NOTE: This function should not be modified, when the callback is needed, |
||
| 1262 | the HAL_USART_RxCpltCallback can be implemented in the user file |
||
| 1263 | */ |
||
| 1264 | } |
||
| 1265 | |||
| 1266 | /** |
||
| 1267 | * @brief Rx Half Transfer completed callbacks. |
||
| 1268 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1269 | * the configuration information for the specified USART module. |
||
| 1270 | * @retval None |
||
| 1271 | */ |
||
| 1272 | __weak void HAL_USART_RxHalfCpltCallback(USART_HandleTypeDef *husart) |
||
| 1273 | { |
||
| 1274 | /* NOTE: This function should not be modified, when the callback is needed, |
||
| 1275 | the HAL_USART_RxHalfCpltCallback can be implemented in the user file |
||
| 1276 | */ |
||
| 1277 | } |
||
| 1278 | |||
| 1279 | /** |
||
| 1280 | * @brief Tx/Rx Transfers completed callback for the non-blocking process. |
||
| 1281 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1282 | * the configuration information for the specified USART module. |
||
| 1283 | * @retval None |
||
| 1284 | */ |
||
| 1285 | __weak void HAL_USART_TxRxCpltCallback(USART_HandleTypeDef *husart) |
||
| 1286 | { |
||
| 1287 | /* NOTE: This function should not be modified, when the callback is needed, |
||
| 1288 | the HAL_USART_TxRxCpltCallback can be implemented in the user file |
||
| 1289 | */ |
||
| 1290 | } |
||
| 1291 | |||
| 1292 | /** |
||
| 1293 | * @brief USART error callbacks. |
||
| 1294 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1295 | * the configuration information for the specified USART module. |
||
| 1296 | * @retval None |
||
| 1297 | */ |
||
| 1298 | __weak void HAL_USART_ErrorCallback(USART_HandleTypeDef *husart) |
||
| 1299 | { |
||
| 1300 | /* NOTE: This function should not be modified, when the callback is needed, |
||
| 1301 | the HAL_USART_ErrorCallback can be implemented in the user file |
||
| 1302 | */ |
||
| 1303 | } |
||
| 1304 | |||
| 1305 | /** |
||
| 1306 | * @} |
||
| 1307 | */ |
||
| 1308 | |||
| 1309 | /** @defgroup USART_Exported_Functions_Group3 Peripheral State and Errors functions |
||
| 1310 | * @brief USART State and Errors functions |
||
| 1311 | * |
||
| 1312 | @verbatim |
||
| 1313 | ============================================================================== |
||
| 1314 | ##### Peripheral State and Errors functions ##### |
||
| 1315 | ============================================================================== |
||
| 1316 | [..] |
||
| 1317 | This subsection provides a set of functions allowing to return the State of |
||
| 1318 | USART communication |
||
| 1319 | process, return Peripheral Errors occurred during communication process |
||
| 1320 | (+) HAL_USART_GetState() API can be helpful to check in run-time the state |
||
| 1321 | of the USART peripheral. |
||
| 1322 | (+) HAL_USART_GetError() check in run-time errors that could be occurred during |
||
| 1323 | communication. |
||
| 1324 | @endverbatim |
||
| 1325 | * @{ |
||
| 1326 | */ |
||
| 1327 | |||
| 1328 | /** |
||
| 1329 | * @brief Returns the USART state. |
||
| 1330 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1331 | * the configuration information for the specified USART module. |
||
| 1332 | * @retval HAL state |
||
| 1333 | */ |
||
| 1334 | HAL_USART_StateTypeDef HAL_USART_GetState(USART_HandleTypeDef *husart) |
||
| 1335 | { |
||
| 1336 | return husart->State; |
||
| 1337 | } |
||
| 1338 | |||
| 1339 | /** |
||
| 1340 | * @brief Return the USART error code |
||
| 1341 | * @param husart : pointer to a USART_HandleTypeDef structure that contains |
||
| 1342 | * the configuration information for the specified USART. |
||
| 1343 | * @retval USART Error Code |
||
| 1344 | */ |
||
| 1345 | uint32_t HAL_USART_GetError(USART_HandleTypeDef *husart) |
||
| 1346 | { |
||
| 1347 | return husart->ErrorCode; |
||
| 1348 | } |
||
| 1349 | |||
| 1350 | /** |
||
| 1351 | * @} |
||
| 1352 | */ |
||
| 1353 | |||
| 1354 | /** |
||
| 1355 | * @} |
||
| 1356 | */ |
||
| 1357 | |||
| 1358 | /** @defgroup USART_Private_Functions USART Private Functions |
||
| 1359 | * @brief USART Private functions |
||
| 1360 | * @{ |
||
| 1361 | */ |
||
| 1362 | /** |
||
| 1363 | * @brief DMA USART transmit process complete callback. |
||
| 1364 | * @param hdma: Pointer to a DMA_HandleTypeDef structure that contains |
||
| 1365 | * the configuration information for the specified DMA module. |
||
| 1366 | * @retval None |
||
| 1367 | */ |
||
| 1368 | static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma) |
||
| 1369 | { |
||
| 1370 | USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; |
||
| 1371 | |||
| 1372 | /* DMA Normal mode */ |
||
| 1373 | if ( HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC) ) |
||
| 1374 | { |
||
| 1375 | husart->TxXferCount = 0; |
||
| 1376 | |||
| 1377 | if(husart->State == HAL_USART_STATE_BUSY_TX) |
||
| 1378 | { |
||
| 1379 | /* Disable the DMA transfer for transmit request by resetting the DMAT bit |
||
| 1380 | in the USART CR3 register */ |
||
| 1381 | CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
||
| 1382 | |||
| 1383 | /* Enable the USART Transmit Complete Interrupt */ |
||
| 1384 | __HAL_USART_ENABLE_IT(husart, USART_IT_TC); |
||
| 1385 | } |
||
| 1386 | } |
||
| 1387 | /* DMA Circular mode */ |
||
| 1388 | else |
||
| 1389 | { |
||
| 1390 | if(husart->State == HAL_USART_STATE_BUSY_TX) |
||
| 1391 | { |
||
| 1392 | HAL_USART_TxCpltCallback(husart); |
||
| 1393 | } |
||
| 1394 | } |
||
| 1395 | } |
||
| 1396 | |||
| 1397 | /** |
||
| 1398 | * @brief DMA USART transmit process half complete callback |
||
| 1399 | * @param hdma: Pointer to a DMA_HandleTypeDef structure that contains |
||
| 1400 | * the configuration information for the specified DMA module. |
||
| 1401 | * @retval None |
||
| 1402 | */ |
||
| 1403 | static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma) |
||
| 1404 | { |
||
| 1405 | USART_HandleTypeDef* husart = (USART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; |
||
| 1406 | |||
| 1407 | HAL_USART_TxHalfCpltCallback(husart); |
||
| 1408 | } |
||
| 1409 | |||
| 1410 | /** |
||
| 1411 | * @brief DMA USART receive process complete callback. |
||
| 1412 | * @param hdma: Pointer to a DMA_HandleTypeDef structure that contains |
||
| 1413 | * the configuration information for the specified DMA module. |
||
| 1414 | * @retval None |
||
| 1415 | */ |
||
| 1416 | static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma) |
||
| 1417 | { |
||
| 1418 | USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; |
||
| 1419 | |||
| 1420 | /* DMA Normal mode */ |
||
| 1421 | if ( HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC) ) |
||
| 1422 | { |
||
| 1423 | husart->RxXferCount = 0; |
||
| 1424 | if(husart->State == HAL_USART_STATE_BUSY_RX) |
||
| 1425 | { |
||
| 1426 | /* Disable the DMA transfer for the receiver requests by setting the DMAR bit |
||
| 1427 | in the USART CR3 register */ |
||
| 1428 | CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR); |
||
| 1429 | |||
| 1430 | husart->State= HAL_USART_STATE_READY; |
||
| 1431 | HAL_USART_RxCpltCallback(husart); |
||
| 1432 | } |
||
| 1433 | /* the usart state is HAL_USART_STATE_BUSY_TX_RX*/ |
||
| 1434 | else |
||
| 1435 | { |
||
| 1436 | /* Disable the DMA transfer for the Transmit/receiver requests by setting the DMAT/DMAR bit |
||
| 1437 | in the USART CR3 register */ |
||
| 1438 | CLEAR_BIT(husart->Instance->CR3, (USART_CR3_DMAT | USART_CR3_DMAR)); |
||
| 1439 | |||
| 1440 | husart->State= HAL_USART_STATE_READY; |
||
| 1441 | HAL_USART_TxRxCpltCallback(husart); |
||
| 1442 | } |
||
| 1443 | } |
||
| 1444 | /* DMA circular mode */ |
||
| 1445 | else |
||
| 1446 | { |
||
| 1447 | if(husart->State == HAL_USART_STATE_BUSY_RX) |
||
| 1448 | { |
||
| 1449 | HAL_USART_RxCpltCallback(husart); |
||
| 1450 | } |
||
| 1451 | /* the usart state is HAL_USART_STATE_BUSY_TX_RX*/ |
||
| 1452 | else |
||
| 1453 | { |
||
| 1454 | HAL_USART_TxRxCpltCallback(husart); |
||
| 1455 | } |
||
| 1456 | } |
||
| 1457 | } |
||
| 1458 | |||
| 1459 | /** |
||
| 1460 | * @brief DMA USART receive process half complete callback |
||
| 1461 | * @param hdma: Pointer to a DMA_HandleTypeDef structure that contains |
||
| 1462 | * the configuration information for the specified DMA module. |
||
| 1463 | * @retval None |
||
| 1464 | */ |
||
| 1465 | static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma) |
||
| 1466 | { |
||
| 1467 | USART_HandleTypeDef* husart = (USART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; |
||
| 1468 | |||
| 1469 | HAL_USART_RxHalfCpltCallback(husart); |
||
| 1470 | } |
||
| 1471 | |||
| 1472 | /** |
||
| 1473 | * @brief DMA USART communication error callback. |
||
| 1474 | * @param hdma: Pointer to a DMA_HandleTypeDef structure that contains |
||
| 1475 | * the configuration information for the specified DMA module. |
||
| 1476 | * @retval None |
||
| 1477 | */ |
||
| 1478 | static void USART_DMAError(DMA_HandleTypeDef *hdma) |
||
| 1479 | { |
||
| 1480 | USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; |
||
| 1481 | |||
| 1482 | husart->RxXferCount = 0; |
||
| 1483 | husart->TxXferCount = 0; |
||
| 1484 | husart->ErrorCode |= HAL_USART_ERROR_DMA; |
||
| 1485 | husart->State= HAL_USART_STATE_READY; |
||
| 1486 | |||
| 1487 | HAL_USART_ErrorCallback(husart); |
||
| 1488 | } |
||
| 1489 | |||
| 1490 | /** |
||
| 1491 | * @brief This function handles USART Communication Timeout. |
||
| 1492 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1493 | * the configuration information for the specified USART module. |
||
| 1494 | * @param Flag: specifies the USART flag to check. |
||
| 1495 | * @param Status: The new Flag status (SET or RESET). |
||
| 1496 | * @param Timeout: Timeout duration |
||
| 1497 | * @retval HAL status |
||
| 1498 | */ |
||
| 1499 | static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Timeout) |
||
| 1500 | { |
||
| 1501 | uint32_t tickstart = 0; |
||
| 1502 | |||
| 1503 | /* Get tick */ |
||
| 1504 | tickstart = HAL_GetTick(); |
||
| 1505 | |||
| 1506 | /* Wait until flag is set */ |
||
| 1507 | if(Status == RESET) |
||
| 1508 | { |
||
| 1509 | while(__HAL_USART_GET_FLAG(husart, Flag) == RESET) |
||
| 1510 | { |
||
| 1511 | /* Check for the Timeout */ |
||
| 1512 | if(Timeout != HAL_MAX_DELAY) |
||
| 1513 | { |
||
| 1514 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) |
||
| 1515 | { |
||
| 1516 | /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */ |
||
| 1517 | __HAL_USART_DISABLE_IT(husart, USART_IT_TXE); |
||
| 1518 | __HAL_USART_DISABLE_IT(husart, USART_IT_RXNE); |
||
| 1519 | __HAL_USART_DISABLE_IT(husart, USART_IT_PE); |
||
| 1520 | __HAL_USART_DISABLE_IT(husart, USART_IT_ERR); |
||
| 1521 | |||
| 1522 | husart->State= HAL_USART_STATE_READY; |
||
| 1523 | |||
| 1524 | /* Process Unlocked */ |
||
| 1525 | __HAL_UNLOCK(husart); |
||
| 1526 | |||
| 1527 | return HAL_TIMEOUT; |
||
| 1528 | } |
||
| 1529 | } |
||
| 1530 | } |
||
| 1531 | } |
||
| 1532 | else |
||
| 1533 | { |
||
| 1534 | while(__HAL_USART_GET_FLAG(husart, Flag) != RESET) |
||
| 1535 | { |
||
| 1536 | /* Check for the Timeout */ |
||
| 1537 | if(Timeout != HAL_MAX_DELAY) |
||
| 1538 | { |
||
| 1539 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) |
||
| 1540 | { |
||
| 1541 | /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */ |
||
| 1542 | __HAL_USART_DISABLE_IT(husart, USART_IT_TXE); |
||
| 1543 | __HAL_USART_DISABLE_IT(husart, USART_IT_RXNE); |
||
| 1544 | __HAL_USART_DISABLE_IT(husart, USART_IT_PE); |
||
| 1545 | __HAL_USART_DISABLE_IT(husart, USART_IT_ERR); |
||
| 1546 | |||
| 1547 | husart->State= HAL_USART_STATE_READY; |
||
| 1548 | |||
| 1549 | /* Process Unlocked */ |
||
| 1550 | __HAL_UNLOCK(husart); |
||
| 1551 | |||
| 1552 | return HAL_TIMEOUT; |
||
| 1553 | } |
||
| 1554 | } |
||
| 1555 | } |
||
| 1556 | } |
||
| 1557 | return HAL_OK; |
||
| 1558 | } |
||
| 1559 | |||
| 1560 | /** |
||
| 1561 | * @brief Simplex Send an amount of data in non-blocking mode. |
||
| 1562 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1563 | * the configuration information for the specified USART module. |
||
| 1564 | * @retval HAL status |
||
| 1565 | * @note The USART errors are not managed to avoid the overrun error. |
||
| 1566 | */ |
||
| 1567 | static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart) |
||
| 1568 | { |
||
| 1569 | uint16_t* tmp=0; |
||
| 1570 | |||
| 1571 | if(husart->State == HAL_USART_STATE_BUSY_TX) |
||
| 1572 | { |
||
| 1573 | if(husart->Init.WordLength == USART_WORDLENGTH_9B) |
||
| 1574 | { |
||
| 1575 | tmp = (uint16_t*) husart->pTxBuffPtr; |
||
| 1576 | WRITE_REG(husart->Instance->DR, (uint16_t)(*tmp & (uint16_t)0x01FF)); |
||
| 1577 | if(husart->Init.Parity == USART_PARITY_NONE) |
||
| 1578 | { |
||
| 1579 | husart->pTxBuffPtr += 2; |
||
| 1580 | } |
||
| 1581 | else |
||
| 1582 | { |
||
| 1583 | husart->pTxBuffPtr += 1; |
||
| 1584 | } |
||
| 1585 | } |
||
| 1586 | else |
||
| 1587 | { |
||
| 1588 | WRITE_REG(husart->Instance->DR, (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FF)); |
||
| 1589 | } |
||
| 1590 | |||
| 1591 | if(--husart->TxXferCount == 0) |
||
| 1592 | { |
||
| 1593 | /* Disable the USART Transmit data register empty Interrupt */ |
||
| 1594 | __HAL_USART_DISABLE_IT(husart, USART_IT_TXE); |
||
| 1595 | |||
| 1596 | /* Enable the USART Transmit Complete Interrupt */ |
||
| 1597 | __HAL_USART_ENABLE_IT(husart, USART_IT_TC); |
||
| 1598 | } |
||
| 1599 | return HAL_OK; |
||
| 1600 | } |
||
| 1601 | else |
||
| 1602 | { |
||
| 1603 | return HAL_BUSY; |
||
| 1604 | } |
||
| 1605 | } |
||
| 1606 | |||
| 1607 | |||
| 1608 | /** |
||
| 1609 | * @brief Wraps up transmission in non blocking mode. |
||
| 1610 | * @param husart: pointer to a USART_HandleTypeDef structure that contains |
||
| 1611 | * the configuration information for the specified USART module. |
||
| 1612 | * @retval HAL status |
||
| 1613 | */ |
||
| 1614 | static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart) |
||
| 1615 | { |
||
| 1616 | /* Disable the USART Transmit Complete Interrupt */ |
||
| 1617 | __HAL_USART_DISABLE_IT(husart, USART_IT_TC); |
||
| 1618 | |||
| 1619 | /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */ |
||
| 1620 | __HAL_USART_DISABLE_IT(husart, USART_IT_ERR); |
||
| 1621 | |||
| 1622 | husart->State = HAL_USART_STATE_READY; |
||
| 1623 | |||
| 1624 | HAL_USART_TxCpltCallback(husart); |
||
| 1625 | |||
| 1626 | return HAL_OK; |
||
| 1627 | } |
||
| 1628 | |||
| 1629 | |||
| 1630 | /** |
||
| 1631 | * @brief Simplex Receive an amount of data in non-blocking mode. |
||
| 1632 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1633 | * the configuration information for the specified USART module. |
||
| 1634 | * @retval HAL status |
||
| 1635 | */ |
||
| 1636 | static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart) |
||
| 1637 | { |
||
| 1638 | uint16_t* tmp=0; |
||
| 1639 | if(husart->State == HAL_USART_STATE_BUSY_RX) |
||
| 1640 | { |
||
| 1641 | if(husart->Init.WordLength == USART_WORDLENGTH_9B) |
||
| 1642 | { |
||
| 1643 | tmp = (uint16_t*) husart->pRxBuffPtr; |
||
| 1644 | if(husart->Init.Parity == USART_PARITY_NONE) |
||
| 1645 | { |
||
| 1646 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF); |
||
| 1647 | husart->pRxBuffPtr += 2; |
||
| 1648 | } |
||
| 1649 | else |
||
| 1650 | { |
||
| 1651 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF); |
||
| 1652 | husart->pRxBuffPtr += 1; |
||
| 1653 | } |
||
| 1654 | if(--husart->RxXferCount != 0x00) |
||
| 1655 | { |
||
| 1656 | /* Send dummy byte in order to generate the clock for the slave to send the next data */ |
||
| 1657 | WRITE_REG(husart->Instance->DR, (DUMMY_DATA & (uint16_t)0x01FF)); |
||
| 1658 | } |
||
| 1659 | } |
||
| 1660 | else |
||
| 1661 | { |
||
| 1662 | if(husart->Init.Parity == USART_PARITY_NONE) |
||
| 1663 | { |
||
| 1664 | *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF); |
||
| 1665 | } |
||
| 1666 | else |
||
| 1667 | { |
||
| 1668 | *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F); |
||
| 1669 | } |
||
| 1670 | |||
| 1671 | if(--husart->RxXferCount != 0x00) |
||
| 1672 | { |
||
| 1673 | /* Send dummy byte in order to generate the clock for the slave to send the next data */ |
||
| 1674 | WRITE_REG(husart->Instance->DR, (DUMMY_DATA & (uint16_t)0x00FF)); |
||
| 1675 | } |
||
| 1676 | } |
||
| 1677 | |||
| 1678 | if(husart->RxXferCount == 0) |
||
| 1679 | { |
||
| 1680 | /* Disable the USART RXNE Interrupt */ |
||
| 1681 | __HAL_USART_DISABLE_IT(husart, USART_IT_RXNE); |
||
| 1682 | |||
| 1683 | /* Disable the USART Parity Error Interrupt */ |
||
| 1684 | __HAL_USART_DISABLE_IT(husart, USART_IT_PE); |
||
| 1685 | |||
| 1686 | /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */ |
||
| 1687 | __HAL_USART_DISABLE_IT(husart, USART_IT_ERR); |
||
| 1688 | |||
| 1689 | husart->State = HAL_USART_STATE_READY; |
||
| 1690 | HAL_USART_RxCpltCallback(husart); |
||
| 1691 | |||
| 1692 | return HAL_OK; |
||
| 1693 | } |
||
| 1694 | return HAL_OK; |
||
| 1695 | } |
||
| 1696 | else |
||
| 1697 | { |
||
| 1698 | return HAL_BUSY; |
||
| 1699 | } |
||
| 1700 | } |
||
| 1701 | |||
| 1702 | /** |
||
| 1703 | * @brief Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking). |
||
| 1704 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1705 | * the configuration information for the specified USART module. |
||
| 1706 | * @retval HAL status |
||
| 1707 | */ |
||
| 1708 | static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart) |
||
| 1709 | { |
||
| 1710 | uint16_t* tmp=0; |
||
| 1711 | |||
| 1712 | if(husart->State == HAL_USART_STATE_BUSY_TX_RX) |
||
| 1713 | { |
||
| 1714 | if(husart->TxXferCount != 0x00) |
||
| 1715 | { |
||
| 1716 | if(__HAL_USART_GET_FLAG(husart, USART_FLAG_TXE) != RESET) |
||
| 1717 | { |
||
| 1718 | if(husart->Init.WordLength == USART_WORDLENGTH_9B) |
||
| 1719 | { |
||
| 1720 | tmp = (uint16_t*) husart->pTxBuffPtr; |
||
| 1721 | WRITE_REG(husart->Instance->DR, (uint16_t)(*tmp & (uint16_t)0x01FF)); |
||
| 1722 | if(husart->Init.Parity == USART_PARITY_NONE) |
||
| 1723 | { |
||
| 1724 | husart->pTxBuffPtr += 2; |
||
| 1725 | } |
||
| 1726 | else |
||
| 1727 | { |
||
| 1728 | husart->pTxBuffPtr += 1; |
||
| 1729 | } |
||
| 1730 | } |
||
| 1731 | else |
||
| 1732 | { |
||
| 1733 | WRITE_REG(husart->Instance->DR, (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FF)); |
||
| 1734 | } |
||
| 1735 | husart->TxXferCount--; |
||
| 1736 | |||
| 1737 | /* Check the latest data transmitted */ |
||
| 1738 | if(husart->TxXferCount == 0) |
||
| 1739 | { |
||
| 1740 | __HAL_USART_DISABLE_IT(husart, USART_IT_TXE); |
||
| 1741 | } |
||
| 1742 | } |
||
| 1743 | } |
||
| 1744 | |||
| 1745 | if(husart->RxXferCount != 0x00) |
||
| 1746 | { |
||
| 1747 | if(__HAL_USART_GET_FLAG(husart, USART_FLAG_RXNE) != RESET) |
||
| 1748 | { |
||
| 1749 | if(husart->Init.WordLength == USART_WORDLENGTH_9B) |
||
| 1750 | { |
||
| 1751 | tmp = (uint16_t*) husart->pRxBuffPtr; |
||
| 1752 | if(husart->Init.Parity == USART_PARITY_NONE) |
||
| 1753 | { |
||
| 1754 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF); |
||
| 1755 | husart->pRxBuffPtr += 2; |
||
| 1756 | } |
||
| 1757 | else |
||
| 1758 | { |
||
| 1759 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF); |
||
| 1760 | husart->pRxBuffPtr += 1; |
||
| 1761 | } |
||
| 1762 | } |
||
| 1763 | else |
||
| 1764 | { |
||
| 1765 | if(husart->Init.Parity == USART_PARITY_NONE) |
||
| 1766 | { |
||
| 1767 | *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF); |
||
| 1768 | } |
||
| 1769 | else |
||
| 1770 | { |
||
| 1771 | *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F); |
||
| 1772 | } |
||
| 1773 | } |
||
| 1774 | husart->RxXferCount--; |
||
| 1775 | } |
||
| 1776 | } |
||
| 1777 | |||
| 1778 | /* Check the latest data received */ |
||
| 1779 | if(husart->RxXferCount == 0) |
||
| 1780 | { |
||
| 1781 | __HAL_USART_DISABLE_IT(husart, USART_IT_RXNE); |
||
| 1782 | |||
| 1783 | /* Disable the USART Parity Error Interrupt */ |
||
| 1784 | __HAL_USART_DISABLE_IT(husart, USART_IT_PE); |
||
| 1785 | |||
| 1786 | /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */ |
||
| 1787 | __HAL_USART_DISABLE_IT(husart, USART_IT_ERR); |
||
| 1788 | |||
| 1789 | husart->State = HAL_USART_STATE_READY; |
||
| 1790 | |||
| 1791 | HAL_USART_TxRxCpltCallback(husart); |
||
| 1792 | |||
| 1793 | return HAL_OK; |
||
| 1794 | } |
||
| 1795 | |||
| 1796 | return HAL_OK; |
||
| 1797 | } |
||
| 1798 | else |
||
| 1799 | { |
||
| 1800 | return HAL_BUSY; |
||
| 1801 | } |
||
| 1802 | } |
||
| 1803 | |||
| 1804 | /** |
||
| 1805 | * @brief Configures the USART peripheral. |
||
| 1806 | * @param husart: Pointer to a USART_HandleTypeDef structure that contains |
||
| 1807 | * the configuration information for the specified USART module. |
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| 1808 | * @retval None |
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| 1809 | */ |
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| 1810 | static void USART_SetConfig(USART_HandleTypeDef *husart) |
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| 1811 | { |
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| 1812 | /* Check the parameters */ |
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| 1813 | assert_param(IS_USART_POLARITY(husart->Init.CLKPolarity)); |
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| 1814 | assert_param(IS_USART_PHASE(husart->Init.CLKPhase)); |
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| 1815 | assert_param(IS_USART_LASTBIT(husart->Init.CLKLastBit)); |
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| 1816 | assert_param(IS_USART_BAUDRATE(husart->Init.BaudRate)); |
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| 1817 | assert_param(IS_USART_WORD_LENGTH(husart->Init.WordLength)); |
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| 1818 | assert_param(IS_USART_STOPBITS(husart->Init.StopBits)); |
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| 1819 | assert_param(IS_USART_PARITY(husart->Init.Parity)); |
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| 1820 | assert_param(IS_USART_MODE(husart->Init.Mode)); |
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| 1821 | |||
| 1822 | /* The LBCL, CPOL and CPHA bits have to be selected when both the transmitter and the |
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| 1823 | receiver are disabled (TE=RE=0) to ensure that the clock pulses function correctly. */ |
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| 1824 | CLEAR_BIT(husart->Instance->CR1, ((uint32_t)(USART_CR1_TE | USART_CR1_RE))); |
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| 1825 | |||
| 1826 | /*---------------------------- USART CR2 Configuration ---------------------*/ |
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| 1827 | /* Configure the USART Clock, CPOL, CPHA and LastBit -----------------------*/ |
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| 1828 | /* Set CPOL bit according to husart->Init.CLKPolarity value */ |
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| 1829 | /* Set CPHA bit according to husart->Init.CLKPhase value */ |
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| 1830 | /* Set LBCL bit according to husart->Init.CLKLastBit value */ |
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| 1831 | /* Set Stop Bits: Set STOP[13:12] bits according to husart->Init.StopBits value */ |
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| 1832 | /* Write to USART CR2 */ |
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| 1833 | MODIFY_REG(husart->Instance->CR2, |
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| 1834 | (uint32_t)(USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_CLKEN | USART_CR2_LBCL | USART_CR2_STOP), |
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| 1835 | ((uint32_t)(USART_CLOCK_ENABLE| husart->Init.CLKPolarity | husart->Init.CLKPhase| husart->Init.CLKLastBit | husart->Init.StopBits))); |
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| 1836 | |||
| 1837 | /*-------------------------- USART CR1 Configuration -----------------------*/ |
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| 1838 | /* Configure the USART Word Length, Parity and mode: |
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| 1839 | Set the M bits according to husart->Init.WordLength value |
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| 1840 | Set PCE and PS bits according to husart->Init.Parity value |
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| 1841 | Set TE and RE bits according to husart->Init.Mode value */ |
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| 1842 | MODIFY_REG(husart->Instance->CR1, |
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| 1843 | (uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE), |
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| 1844 | (uint32_t)husart->Init.WordLength | husart->Init.Parity | husart->Init.Mode); |
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| 1845 | |||
| 1846 | /*-------------------------- USART CR3 Configuration -----------------------*/ |
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| 1847 | /* Clear CTSE and RTSE bits */ |
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| 1848 | CLEAR_BIT(husart->Instance->CR3, (uint32_t)(USART_CR3_RTSE | USART_CR3_CTSE)); |
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| 1849 | |||
| 1850 | /*-------------------------- USART BRR Configuration -----------------------*/ |
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| 1851 | if((husart->Instance == USART1)) |
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| 1852 | { |
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| 1853 | husart->Instance->BRR = USART_BRR(HAL_RCC_GetPCLK2Freq(), husart->Init.BaudRate); |
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| 1854 | } |
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| 1855 | else |
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| 1856 | { |
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| 1857 | husart->Instance->BRR = USART_BRR(HAL_RCC_GetPCLK1Freq(), husart->Init.BaudRate); |
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| 1858 | } |
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| 1859 | } |
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| 1860 | |||
| 1861 | /** |
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| 1862 | * @} |
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| 1863 | */ |
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| 1864 | |||
| 1865 | #endif /* HAL_USART_MODULE_ENABLED */ |
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| 1866 | /** |
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| 1867 | * @} |
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| 1868 | */ |
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| 1869 | |||
| 1870 | /** |
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| 1871 | * @} |
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| 1872 | */ |
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| 1873 | |||
| 1874 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |