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| Rev | Author | Line No. | Line |
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| 2 | mjames | 1 | /** |
| 2 | ****************************************************************************** |
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| 3 | * @file stm32f1xx_hal_gpio_ex.c |
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| 4 | * @author MCD Application Team |
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| 5 | * @brief GPIO Extension HAL module driver. |
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| 6 | * This file provides firmware functions to manage the following |
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| 7 | * functionalities of the General Purpose Input/Output (GPIO) extension peripheral. |
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| 8 | * + Extended features functions |
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| 9 | * |
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| 10 | @verbatim |
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| 11 | ============================================================================== |
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| 12 | ##### GPIO Peripheral extension features ##### |
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| 13 | ============================================================================== |
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| 14 | [..] GPIO module on STM32F1 family, manage also the AFIO register: |
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| 15 | (+) Possibility to use the EVENTOUT Cortex feature |
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| 16 | |||
| 17 | ##### How to use this driver ##### |
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| 18 | ============================================================================== |
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| 19 | [..] This driver provides functions to use EVENTOUT Cortex feature |
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| 20 | (#) Configure EVENTOUT Cortex feature using the function HAL_GPIOEx_ConfigEventout() |
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| 21 | (#) Activate EVENTOUT Cortex feature using the HAL_GPIOEx_EnableEventout() |
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| 22 | (#) Deactivate EVENTOUT Cortex feature using the HAL_GPIOEx_DisableEventout() |
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| 23 | |||
| 24 | @endverbatim |
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| 25 | ****************************************************************************** |
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| 26 | * @attention |
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| 27 | * |
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| 28 | * <h2><center>© Copyright (c) 2016 STMicroelectronics. |
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| 29 | * All rights reserved.</center></h2> |
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| 30 | * |
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| 31 | * This software component is licensed by ST under BSD 3-Clause license, |
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| 32 | * the "License"; You may not use this file except in compliance with the |
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| 33 | * License. You may obtain a copy of the License at: |
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| 34 | * opensource.org/licenses/BSD-3-Clause |
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| 35 | * |
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| 36 | ****************************************************************************** |
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| 37 | */ |
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| 38 | |||
| 39 | /* Includes ------------------------------------------------------------------*/ |
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| 40 | #include "stm32f1xx_hal.h" |
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| 41 | |||
| 42 | /** @addtogroup STM32F1xx_HAL_Driver |
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| 43 | * @{ |
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| 44 | */ |
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| 45 | |||
| 46 | /** @defgroup GPIOEx GPIOEx |
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| 47 | * @brief GPIO HAL module driver |
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| 48 | * @{ |
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| 49 | */ |
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| 50 | |||
| 51 | #ifdef HAL_GPIO_MODULE_ENABLED |
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| 52 | |||
| 53 | /** @defgroup GPIOEx_Exported_Functions GPIOEx Exported Functions |
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| 54 | * @{ |
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| 55 | */ |
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| 56 | |||
| 57 | /** @defgroup GPIOEx_Exported_Functions_Group1 Extended features functions |
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| 58 | * @brief Extended features functions |
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| 59 | * |
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| 60 | @verbatim |
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| 61 | ============================================================================== |
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| 62 | ##### Extended features functions ##### |
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| 63 | ============================================================================== |
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| 64 | [..] This section provides functions allowing to: |
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| 65 | (+) Configure EVENTOUT Cortex feature using the function HAL_GPIOEx_ConfigEventout() |
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| 66 | (+) Activate EVENTOUT Cortex feature using the HAL_GPIOEx_EnableEventout() |
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| 67 | (+) Deactivate EVENTOUT Cortex feature using the HAL_GPIOEx_DisableEventout() |
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| 68 | |||
| 69 | @endverbatim |
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| 70 | * @{ |
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| 71 | */ |
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| 72 | |||
| 73 | /** |
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| 74 | * @brief Configures the port and pin on which the EVENTOUT Cortex signal will be connected. |
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| 75 | * @param GPIO_PortSource Select the port used to output the Cortex EVENTOUT signal. |
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| 76 | * This parameter can be a value of @ref GPIOEx_EVENTOUT_PORT. |
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| 77 | * @param GPIO_PinSource Select the pin used to output the Cortex EVENTOUT signal. |
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| 78 | * This parameter can be a value of @ref GPIOEx_EVENTOUT_PIN. |
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| 79 | * @retval None |
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| 80 | */ |
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| 81 | void HAL_GPIOEx_ConfigEventout(uint32_t GPIO_PortSource, uint32_t GPIO_PinSource) |
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| 82 | { |
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| 83 | /* Verify the parameters */ |
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| 84 | assert_param(IS_AFIO_EVENTOUT_PORT(GPIO_PortSource)); |
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| 85 | assert_param(IS_AFIO_EVENTOUT_PIN(GPIO_PinSource)); |
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| 86 | |||
| 87 | /* Apply the new configuration */ |
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| 88 | MODIFY_REG(AFIO->EVCR, (AFIO_EVCR_PORT) | (AFIO_EVCR_PIN), (GPIO_PortSource) | (GPIO_PinSource)); |
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| 89 | } |
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| 90 | |||
| 91 | /** |
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| 92 | * @brief Enables the Event Output. |
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| 93 | * @retval None |
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| 94 | */ |
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| 95 | void HAL_GPIOEx_EnableEventout(void) |
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| 96 | { |
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| 97 | SET_BIT(AFIO->EVCR, AFIO_EVCR_EVOE); |
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| 98 | } |
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| 99 | |||
| 100 | /** |
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| 101 | * @brief Disables the Event Output. |
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| 102 | * @retval None |
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| 103 | */ |
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| 104 | void HAL_GPIOEx_DisableEventout(void) |
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| 105 | { |
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| 106 | CLEAR_BIT(AFIO->EVCR, AFIO_EVCR_EVOE); |
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| 107 | } |
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| 108 | |||
| 109 | /** |
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| 110 | * @} |
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| 111 | */ |
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| 112 | |||
| 113 | /** |
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| 114 | * @} |
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| 115 | */ |
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| 116 | |||
| 117 | #endif /* HAL_GPIO_MODULE_ENABLED */ |
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| 118 | |||
| 119 | /** |
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| 120 | * @} |
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| 121 | */ |
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| 122 | |||
| 123 | /** |
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| 124 | * @} |
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| 125 | */ |
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| 126 | |||
| 127 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |