| /** |
| ****************************************************************************** |
| * @file stm32f1xx_hal_gpio_ex.c |
| * @author MCD Application Team |
| * @brief GPIO Extension HAL module driver. |
| * This file provides firmware functions to manage the following |
| * functionalities of the General Purpose Input/Output (GPIO) extension peripheral. |
| * + Extended features functions |
| * |
| ****************************************************************************** |
| * @attention |
| * |
| * Copyright (c) 2016 STMicroelectronics. |
| * All rights reserved. |
| * |
| * This software is licensed under terms that can be found in the LICENSE file |
| * in the root directory of this software component. |
| * If no LICENSE file comes with this software, it is provided AS-IS. |
| * |
| ****************************************************************************** |
| @verbatim |
| ============================================================================== |
| ##### GPIO Peripheral extension features ##### |
| ============================================================================== |
| [..] GPIO module on STM32F1 family, manage also the AFIO register: |
| (+) Possibility to use the EVENTOUT Cortex feature |
| |
| ##### How to use this driver ##### |
| ============================================================================== |
| [..] This driver provides functions to use EVENTOUT Cortex feature |
| (#) Configure EVENTOUT Cortex feature using the function HAL_GPIOEx_ConfigEventout() |
| (#) Activate EVENTOUT Cortex feature using the HAL_GPIOEx_EnableEventout() |
| (#) Deactivate EVENTOUT Cortex feature using the HAL_GPIOEx_DisableEventout() |
| |
| @endverbatim |
| ****************************************************************************** |
| */ |
| |
| /* Includes ------------------------------------------------------------------*/ |
| #include "stm32f1xx_hal.h" |
| |
| /** @addtogroup STM32F1xx_HAL_Driver |
| * @{ |
| */ |
| |
| /** @defgroup GPIOEx GPIOEx |
| * @brief GPIO HAL module driver |
| * @{ |
| */ |
| |
| #ifdef HAL_GPIO_MODULE_ENABLED |
| |
| /** @defgroup GPIOEx_Exported_Functions GPIOEx Exported Functions |
| * @{ |
| */ |
| |
| /** @defgroup GPIOEx_Exported_Functions_Group1 Extended features functions |
| * @brief Extended features functions |
| * |
| @verbatim |
| ============================================================================== |
| ##### Extended features functions ##### |
| ============================================================================== |
| [..] This section provides functions allowing to: |
| (+) Configure EVENTOUT Cortex feature using the function HAL_GPIOEx_ConfigEventout() |
| (+) Activate EVENTOUT Cortex feature using the HAL_GPIOEx_EnableEventout() |
| (+) Deactivate EVENTOUT Cortex feature using the HAL_GPIOEx_DisableEventout() |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| /** |
| * @brief Configures the port and pin on which the EVENTOUT Cortex signal will be connected. |
| * @param GPIO_PortSource Select the port used to output the Cortex EVENTOUT signal. |
| * This parameter can be a value of @ref GPIOEx_EVENTOUT_PORT. |
| * @param GPIO_PinSource Select the pin used to output the Cortex EVENTOUT signal. |
| * This parameter can be a value of @ref GPIOEx_EVENTOUT_PIN. |
| * @retval None |
| */ |
| void HAL_GPIOEx_ConfigEventout(uint32_t GPIO_PortSource, uint32_t GPIO_PinSource) |
| { |
| /* Verify the parameters */ |
| assert_param(IS_AFIO_EVENTOUT_PORT(GPIO_PortSource)); |
| assert_param(IS_AFIO_EVENTOUT_PIN(GPIO_PinSource)); |
| |
| /* Apply the new configuration */ |
| MODIFY_REG(AFIO->EVCR, (AFIO_EVCR_PORT) | (AFIO_EVCR_PIN), (GPIO_PortSource) | (GPIO_PinSource)); |
| } |
| |
| /** |
| * @brief Enables the Event Output. |
| * @retval None |
| */ |
| void HAL_GPIOEx_EnableEventout(void) |
| { |
| SET_BIT(AFIO->EVCR, AFIO_EVCR_EVOE); |
| } |
| |
| /** |
| * @brief Disables the Event Output. |
| * @retval None |
| */ |
| void HAL_GPIOEx_DisableEventout(void) |
| { |
| CLEAR_BIT(AFIO->EVCR, AFIO_EVCR_EVOE); |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* HAL_GPIO_MODULE_ENABLED */ |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |