stm32f1xx_hal_gpio_ex.c

00001 /**
00002   ******************************************************************************
00003   * @file    stm32f1xx_hal_gpio_ex.c
00004   * @author  MCD Application Team
00005   * @version V1.0.4
00006   * @date    29-April-2016
00007   * @brief   GPIO Extension HAL module driver.
00008   *         This file provides firmware functions to manage the following 
00009   *          functionalities of the General Purpose Input/Output (GPIO) extension peripheral.
00010   *           + Extended features functions
00011   *         
00012   @verbatim
00013   ==============================================================================
00014                     ##### GPIO Peripheral extension features #####
00015   ==============================================================================         
00016   [..] GPIO module on STM32F1 family, manage also the AFIO register:
00017        (+) Possibility to use the EVENTOUT Cortex feature
00018    
00019                      ##### How to use this driver #####
00020   ==============================================================================
00021   [..] This driver provides functions to use EVENTOUT Cortex feature
00022     (#) Configure EVENTOUT Cortex feature using the function HAL_GPIOEx_ConfigEventout()
00023     (#) Activate EVENTOUT Cortex feature using the HAL_GPIOEx_EnableEventout()
00024     (#) Deactivate EVENTOUT Cortex feature using the HAL_GPIOEx_DisableEventout()
00025  
00026   @endverbatim
00027   ******************************************************************************
00028   * @attention
00029   *
00030   * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
00031   *
00032   * Redistribution and use in source and binary forms, with or without modification,
00033   * are permitted provided that the following conditions are met:
00034   *   1. Redistributions of source code must retain the above copyright notice,
00035   *      this list of conditions and the following disclaimer.
00036   *   2. Redistributions in binary form must reproduce the above copyright notice,
00037   *      this list of conditions and the following disclaimer in the documentation
00038   *      and/or other materials provided with the distribution.
00039   *   3. Neither the name of STMicroelectronics nor the names of its contributors
00040   *      may be used to endorse or promote products derived from this software
00041   *      without specific prior written permission.
00042   *
00043   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00044   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00045   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00046   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
00047   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00048   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00049   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00050   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00051   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00052   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00053   *
00054   ******************************************************************************  
00055   */ 
00056 
00057 /* Includes ------------------------------------------------------------------*/
00058 #include "stm32f1xx_hal.h"
00059 
00060 /** @addtogroup STM32F1xx_HAL_Driver
00061   * @{
00062   */
00063 
00064 /** @defgroup GPIOEx GPIOEx
00065   * @brief GPIO HAL module driver
00066   * @{
00067   */
00068 
00069 #ifdef HAL_GPIO_MODULE_ENABLED
00070 
00071 /** @defgroup GPIOEx_Exported_Functions GPIOEx Exported Functions
00072   * @{
00073   */
00074 
00075 /** @defgroup GPIOEx_Exported_Functions_Group1 Extended features functions
00076  *  @brief    Extended features functions 
00077  *
00078 @verbatim   
00079   ==============================================================================
00080                  ##### Extended features functions #####
00081   ==============================================================================  
00082     [..]  This section provides functions allowing to:
00083     (+) Configure EVENTOUT Cortex feature using the function HAL_GPIOEx_ConfigEventout()
00084     (+) Activate EVENTOUT Cortex feature using the HAL_GPIOEx_EnableEventout()
00085     (+) Deactivate EVENTOUT Cortex feature using the HAL_GPIOEx_DisableEventout()
00086                      
00087 @endverbatim
00088   * @{
00089   */
00090   
00091 /**
00092   * @brief  Configures the port and pin on which the EVENTOUT Cortex signal will be connected.
00093   * @param  GPIO_PortSource Select the port used to output the Cortex EVENTOUT signal.
00094   *   This parameter can be a value of @ref GPIOEx_EVENTOUT_PORT.
00095   * @param  GPIO_PinSource Select the pin used to output the Cortex EVENTOUT signal.
00096   *   This parameter can be a value of @ref GPIOEx_EVENTOUT_PIN.
00097   * @retval None
00098   */  
00099 void HAL_GPIOEx_ConfigEventout(uint32_t GPIO_PortSource, uint32_t GPIO_PinSource)
00100 {
00101   /* Verify the parameters */
00102   assert_param(IS_AFIO_EVENTOUT_PORT(GPIO_PortSource));
00103   assert_param(IS_AFIO_EVENTOUT_PIN(GPIO_PinSource));
00104   
00105   /* Apply the new configuration */
00106   MODIFY_REG(AFIO->EVCR, (AFIO_EVCR_PORT)|(AFIO_EVCR_PIN), (GPIO_PortSource)|(GPIO_PinSource));
00107 }
00108 
00109 /**
00110   * @brief  Enables the Event Output.
00111   * @retval None
00112   */
00113 void HAL_GPIOEx_EnableEventout(void)
00114 {
00115   SET_BIT(AFIO->EVCR, AFIO_EVCR_EVOE);
00116 }
00117 
00118 /**
00119   * @brief  Disables the Event Output.
00120   * @retval None
00121   */
00122 void HAL_GPIOEx_DisableEventout(void)
00123 {
00124   CLEAR_BIT(AFIO->EVCR, AFIO_EVCR_EVOE);
00125 }
00126 
00127 /**
00128   * @}
00129   */
00130   
00131 /**
00132   * @}
00133   */
00134   
00135 #endif /* HAL_GPIO_MODULE_ENABLED */
00136 
00137 /**
00138   * @}
00139   */
00140 
00141 /**
00142   * @}
00143   */
00144 
00145 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/