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| 2 | mjames | 1 | /** |
| 2 | ****************************************************************************** |
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| 3 | * @file stm32l1xx_hal_spi_ex.c |
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| 4 | * @author MCD Application Team |
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| 5 | * @version V1.2.0 |
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| 6 | * @date 01-July-2016 |
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| 7 | * @brief Extended SPI HAL module driver. |
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| 8 | * |
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| 9 | * This file provides firmware functions to manage the following |
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| 10 | * functionalities SPI extension peripheral: |
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| 11 | * + Extended Peripheral Control functions |
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| 12 | * |
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| 13 | ****************************************************************************** |
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| 14 | * @attention |
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| 15 | * |
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| 16 | * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> |
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| 17 | * |
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| 18 | * Redistribution and use in source and binary forms, with or without modification, |
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| 19 | * are permitted provided that the following conditions are met: |
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| 20 | * 1. Redistributions of source code must retain the above copyright notice, |
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| 21 | * this list of conditions and the following disclaimer. |
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| 22 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
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| 23 | * this list of conditions and the following disclaimer in the documentation |
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| 24 | * and/or other materials provided with the distribution. |
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| 25 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
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| 26 | * may be used to endorse or promote products derived from this software |
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| 27 | * without specific prior written permission. |
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| 28 | * |
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| 29 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 30 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 31 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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| 32 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
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| 33 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 34 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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| 35 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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| 36 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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| 37 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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| 38 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 39 | * |
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| 40 | ****************************************************************************** |
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| 41 | */ |
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| 42 | |||
| 43 | /* Includes ------------------------------------------------------------------*/ |
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| 44 | #include "stm32l1xx_hal.h" |
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| 45 | |||
| 46 | /** @addtogroup STM32L1xx_HAL_Driver |
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| 47 | * @{ |
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| 48 | */ |
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| 49 | |||
| 50 | /** @addtogroup SPI |
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| 51 | * @{ |
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| 52 | */ |
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| 53 | #ifdef HAL_SPI_MODULE_ENABLED |
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| 54 | |||
| 55 | /* Private typedef -----------------------------------------------------------*/ |
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| 56 | /* Private define ------------------------------------------------------------*/ |
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| 57 | /* Private macro -------------------------------------------------------------*/ |
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| 58 | /* Private variables ---------------------------------------------------------*/ |
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| 59 | /* Private function prototypes -----------------------------------------------*/ |
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| 60 | /* Private functions ---------------------------------------------------------*/ |
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| 61 | |||
| 62 | /** @addtogroup SPI_Exported_Functions |
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| 63 | * @{ |
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| 64 | */ |
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| 65 | |||
| 66 | /** @addtogroup SPI_Exported_Functions_Group1 |
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| 67 | * |
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| 68 | * @{ |
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| 69 | */ |
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| 70 | |||
| 71 | /** |
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| 72 | * @brief Initializes the SPI according to the specified parameters |
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| 73 | * in the SPI_InitTypeDef and create the associated handle. |
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| 74 | * @param hspi: pointer to a SPI_HandleTypeDef structure that contains |
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| 75 | * the configuration information for SPI module. |
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| 76 | * @retval HAL status |
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| 77 | */ |
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| 78 | HAL_StatusTypeDef HAL_SPI_Init(SPI_HandleTypeDef *hspi) |
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| 79 | { |
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| 80 | /* Check the SPI handle allocation */ |
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| 81 | if(hspi == NULL) |
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| 82 | { |
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| 83 | return HAL_ERROR; |
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| 84 | } |
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| 85 | |||
| 86 | /* Check the parameters */ |
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| 87 | assert_param(IS_SPI_ALL_INSTANCE(hspi->Instance)); |
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| 88 | assert_param(IS_SPI_MODE(hspi->Init.Mode)); |
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| 89 | assert_param(IS_SPI_DIRECTION_MODE(hspi->Init.Direction)); |
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| 90 | assert_param(IS_SPI_DATASIZE(hspi->Init.DataSize)); |
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| 91 | assert_param(IS_SPI_CPOL(hspi->Init.CLKPolarity)); |
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| 92 | assert_param(IS_SPI_CPHA(hspi->Init.CLKPhase)); |
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| 93 | assert_param(IS_SPI_NSS(hspi->Init.NSS)); |
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| 94 | assert_param(IS_SPI_BAUDRATE_PRESCALER(hspi->Init.BaudRatePrescaler)); |
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| 95 | assert_param(IS_SPI_FIRST_BIT(hspi->Init.FirstBit)); |
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| 96 | assert_param(IS_SPI_TIMODE(hspi->Init.TIMode)); |
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| 97 | assert_param(IS_SPI_CRC_CALCULATION(hspi->Init.CRCCalculation)); |
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| 98 | assert_param(IS_SPI_CRC_POLYNOMIAL(hspi->Init.CRCPolynomial)); |
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| 99 | |||
| 100 | if(hspi->State == HAL_SPI_STATE_RESET) |
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| 101 | { |
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| 102 | /* Allocate lock resource and initialize it */ |
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| 103 | hspi->Lock = HAL_UNLOCKED; |
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| 104 | |||
| 105 | /* Init the low level hardware : GPIO, CLOCK, NVIC... */ |
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| 106 | HAL_SPI_MspInit(hspi); |
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| 107 | } |
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| 108 | |||
| 109 | hspi->State = HAL_SPI_STATE_BUSY; |
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| 110 | |||
| 111 | /* Disble the selected SPI peripheral */ |
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| 112 | __HAL_SPI_DISABLE(hspi); |
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| 113 | |||
| 114 | /*----------------------- SPIx CR1 & CR2 Configuration ---------------------*/ |
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| 115 | /* Configure : SPI Mode, Communication Mode, Data size, Clock polarity and phase, NSS management, |
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| 116 | Communication speed, First bit and CRC calculation state */ |
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| 117 | hspi->Instance->CR1 = (hspi->Init.Mode | hspi->Init.Direction | hspi->Init.DataSize | |
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| 118 | hspi->Init.CLKPolarity | hspi->Init.CLKPhase | (hspi->Init.NSS & SPI_CR1_SSM) | |
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| 119 | hspi->Init.BaudRatePrescaler | hspi->Init.FirstBit | hspi->Init.CRCCalculation); |
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| 120 | |||
| 121 | /* Configure : NSS management */ |
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| 122 | hspi->Instance->CR2 = (((hspi->Init.NSS >> 16) & SPI_CR2_SSOE) | hspi->Init.TIMode); |
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| 123 | |||
| 124 | /*---------------------------- SPIx CRCPOLY Configuration ------------------*/ |
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| 125 | /* Configure : CRC Polynomial */ |
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| 126 | hspi->Instance->CRCPR = hspi->Init.CRCPolynomial; |
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| 127 | |||
| 128 | #if defined (STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined (STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined (STM32L151xE) || defined (STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX) |
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| 129 | /* Activate the SPI mode (Make sure that I2SMOD bit in I2SCFGR register is reset) */ |
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| 130 | CLEAR_BIT(hspi->Instance->I2SCFGR, SPI_I2SCFGR_I2SMOD); |
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| 131 | #endif |
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| 132 | |||
| 133 | hspi->ErrorCode = HAL_SPI_ERROR_NONE; |
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| 134 | hspi->State = HAL_SPI_STATE_READY; |
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| 135 | |||
| 136 | return HAL_OK; |
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| 137 | } |
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| 138 | |||
| 139 | /** |
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| 140 | * @} |
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| 141 | */ |
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| 142 | |||
| 143 | /** |
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| 144 | * @} |
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| 145 | */ |
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| 146 | |||
| 147 | #endif /* HAL_SPI_MODULE_ENABLED */ |
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| 148 | /** |
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| 149 | * @} |
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| 150 | */ |
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| 151 | |||
| 152 | /** |
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| 153 | * @} |
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| 154 | */ |
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| 155 | |||
| 156 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |