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Diffstat (limited to 'Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_gpio.c')
| -rw-r--r-- | Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_gpio.c | 545 |
1 files changed, 545 insertions, 0 deletions
diff --git a/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_gpio.c b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_gpio.c new file mode 100644 index 0000000..32aa073 --- /dev/null +++ b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_gpio.c @@ -0,0 +1,545 @@ +/**
+ ******************************************************************************
+ * @file stm32f4xx_hal_gpio.c
+ * @author MCD Application Team
+ * @version V1.3.2
+ * @date 26-June-2015
+ * @brief GPIO HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the General Purpose Input/Output (GPIO) peripheral:
+ * + Initialization and de-initialization functions
+ * + IO operation functions
+ *
+ @verbatim
+ ==============================================================================
+ ##### GPIO Peripheral features #####
+ ==============================================================================
+ [..]
+ Subject to the specific hardware characteristics of each I/O port listed in the datasheet, each
+ port bit of the General Purpose IO (GPIO) Ports, can be individually configured by software
+ in several modes:
+ (+) Input mode
+ (+) Analog mode
+ (+) Output mode
+ (+) Alternate function mode
+ (+) External interrupt/event lines
+
+ [..]
+ During and just after reset, the alternate functions and external interrupt
+ lines are not active and the I/O ports are configured in input floating mode.
+
+ [..]
+ All GPIO pins have weak internal pull-up and pull-down resistors, which can be
+ activated or not.
+
+ [..]
+ In Output or Alternate mode, each IO can be configured on open-drain or push-pull
+ type and the IO speed can be selected depending on the VDD value.
+
+ [..]
+ All ports have external interrupt/event capability. To use external interrupt
+ lines, the port must be configured in input mode. All available GPIO pins are
+ connected to the 16 external interrupt/event lines from EXTI0 to EXTI15.
+
+ [..]
+ The external interrupt/event controller consists of up to 23 edge detectors
+ (16 lines are connected to GPIO) for generating event/interrupt requests (each
+ input line can be independently configured to select the type (interrupt or event)
+ and the corresponding trigger event (rising or falling or both). Each line can
+ also be masked independently.
+
+ ##### How to use this driver #####
+ ==============================================================================
+ [..]
+ (#) Enable the GPIO AHB clock using the following function: __HAL_RCC_GPIOx_CLK_ENABLE().
+
+ (#) Configure the GPIO pin(s) using HAL_GPIO_Init().
+ (++) Configure the IO mode using "Mode" member from GPIO_InitTypeDef structure
+ (++) Activate Pull-up, Pull-down resistor using "Pull" member from GPIO_InitTypeDef
+ structure.
+ (++) In case of Output or alternate function mode selection: the speed is
+ configured through "Speed" member from GPIO_InitTypeDef structure.
+ (++) In alternate mode is selection, the alternate function connected to the IO
+ is configured through "Alternate" member from GPIO_InitTypeDef structure.
+ (++) Analog mode is required when a pin is to be used as ADC channel
+ or DAC output.
+ (++) In case of external interrupt/event selection the "Mode" member from
+ GPIO_InitTypeDef structure select the type (interrupt or event) and
+ the corresponding trigger event (rising or falling or both).
+
+ (#) In case of external interrupt/event mode selection, configure NVIC IRQ priority
+ mapped to the EXTI line using HAL_NVIC_SetPriority() and enable it using
+ HAL_NVIC_EnableIRQ().
+
+ (#) To get the level of a pin configured in input mode use HAL_GPIO_ReadPin().
+
+ (#) To set/reset the level of a pin configured in output mode use
+ HAL_GPIO_WritePin()/HAL_GPIO_TogglePin().
+
+ (#) To lock pin configuration until next reset use HAL_GPIO_LockPin().
+
+
+ (#) During and just after reset, the alternate functions are not
+ active and the GPIO pins are configured in input floating mode (except JTAG
+ pins).
+
+ (#) The LSE oscillator pins OSC32_IN and OSC32_OUT can be used as general purpose
+ (PC14 and PC15, respectively) when the LSE oscillator is off. The LSE has
+ priority over the GPIO function.
+
+ (#) The HSE oscillator pins OSC_IN/OSC_OUT can be used as
+ general purpose PH0 and PH1, respectively, when the HSE oscillator is off.
+ The HSE has priority over the GPIO function.
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_hal.h"
+
+/** @addtogroup STM32F4xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup GPIO GPIO
+ * @brief GPIO HAL module driver
+ * @{
+ */
+
+#ifdef HAL_GPIO_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/** @addtogroup GPIO_Private_Constants GPIO Private Constants
+ * @{
+ */
+#define GPIO_MODE ((uint32_t)0x00000003)
+#define EXTI_MODE ((uint32_t)0x10000000)
+#define GPIO_MODE_IT ((uint32_t)0x00010000)
+#define GPIO_MODE_EVT ((uint32_t)0x00020000)
+#define RISING_EDGE ((uint32_t)0x00100000)
+#define FALLING_EDGE ((uint32_t)0x00200000)
+#define GPIO_OUTPUT_TYPE ((uint32_t)0x00000010)
+
+#define GPIO_NUMBER ((uint32_t)16)
+/**
+ * @}
+ */
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+/** @defgroup GPIO_Exported_Functions GPIO Exported Functions
+ * @{
+ */
+
+/** @defgroup GPIO_Exported_Functions_Group1 Initialization and de-initialization functions
+ * @brief Initialization and Configuration functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Initialization and de-initialization functions #####
+ ===============================================================================
+ [..]
+ This section provides functions allowing to initialize and de-initialize the GPIOs
+ to be ready for use.
+
+@endverbatim
+ * @{
+ */
+
+
+/**
+ * @brief Initializes the GPIOx peripheral according to the specified parameters in the GPIO_Init.
+ * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
+ * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
+ * @param GPIO_Init: pointer to a GPIO_InitTypeDef structure that contains
+ * the configuration information for the specified GPIO peripheral.
+ * @retval None
+ */
+void HAL_GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_InitTypeDef *GPIO_Init)
+{
+ uint32_t position;
+ uint32_t ioposition = 0x00;
+ uint32_t iocurrent = 0x00;
+ uint32_t temp = 0x00;
+
+ /* Check the parameters */
+ assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
+ assert_param(IS_GPIO_PIN(GPIO_Init->Pin));
+ assert_param(IS_GPIO_MODE(GPIO_Init->Mode));
+ assert_param(IS_GPIO_PULL(GPIO_Init->Pull));
+
+ /* Configure the port pins */
+ for(position = 0; position < GPIO_NUMBER; position++)
+ {
+ /* Get the IO position */
+ ioposition = ((uint32_t)0x01) << position;
+ /* Get the current IO position */
+ iocurrent = (uint32_t)(GPIO_Init->Pin) & ioposition;
+
+ if(iocurrent == ioposition)
+ {
+ /*--------------------- GPIO Mode Configuration ------------------------*/
+ /* In case of Alternate function mode selection */
+ if((GPIO_Init->Mode == GPIO_MODE_AF_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))
+ {
+ /* Check the Alternate function parameter */
+ assert_param(IS_GPIO_AF(GPIO_Init->Alternate));
+ /* Configure Alternate function mapped with the current IO */
+ temp = GPIOx->AFR[position >> 3];
+ temp &= ~((uint32_t)0xF << ((uint32_t)(position & (uint32_t)0x07) * 4)) ;
+ temp |= ((uint32_t)(GPIO_Init->Alternate) << (((uint32_t)position & (uint32_t)0x07) * 4));
+ GPIOx->AFR[position >> 3] = temp;
+ }
+
+ /* Configure IO Direction mode (Input, Output, Alternate or Analog) */
+ temp = GPIOx->MODER;
+ temp &= ~(GPIO_MODER_MODER0 << (position * 2));
+ temp |= ((GPIO_Init->Mode & GPIO_MODE) << (position * 2));
+ GPIOx->MODER = temp;
+
+ /* In case of Output or Alternate function mode selection */
+ if((GPIO_Init->Mode == GPIO_MODE_OUTPUT_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_PP) ||
+ (GPIO_Init->Mode == GPIO_MODE_OUTPUT_OD) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))
+ {
+ /* Check the Speed parameter */
+ assert_param(IS_GPIO_SPEED(GPIO_Init->Speed));
+ /* Configure the IO Speed */
+ temp = GPIOx->OSPEEDR;
+ temp &= ~(GPIO_OSPEEDER_OSPEEDR0 << (position * 2));
+ temp |= (GPIO_Init->Speed << (position * 2));
+ GPIOx->OSPEEDR = temp;
+
+ /* Configure the IO Output Type */
+ temp = GPIOx->OTYPER;
+ temp &= ~(GPIO_OTYPER_OT_0 << position) ;
+ temp |= (((GPIO_Init->Mode & GPIO_OUTPUT_TYPE) >> 4) << position);
+ GPIOx->OTYPER = temp;
+ }
+
+ /* Activate the Pull-up or Pull down resistor for the current IO */
+ temp = GPIOx->PUPDR;
+ temp &= ~(GPIO_PUPDR_PUPDR0 << (position * 2));
+ temp |= ((GPIO_Init->Pull) << (position * 2));
+ GPIOx->PUPDR = temp;
+
+ /*--------------------- EXTI Mode Configuration ------------------------*/
+ /* Configure the External Interrupt or event for the current IO */
+ if((GPIO_Init->Mode & EXTI_MODE) == EXTI_MODE)
+ {
+ /* Enable SYSCFG Clock */
+ __HAL_RCC_SYSCFG_CLK_ENABLE();
+
+ temp = SYSCFG->EXTICR[position >> 2];
+ temp &= ~(((uint32_t)0x0F) << (4 * (position & 0x03)));
+ temp |= ((uint32_t)(GPIO_GET_INDEX(GPIOx)) << (4 * (position & 0x03)));
+ SYSCFG->EXTICR[position >> 2] = temp;
+
+ /* Clear EXTI line configuration */
+ temp = EXTI->IMR;
+ temp &= ~((uint32_t)iocurrent);
+ if((GPIO_Init->Mode & GPIO_MODE_IT) == GPIO_MODE_IT)
+ {
+ temp |= iocurrent;
+ }
+ EXTI->IMR = temp;
+
+ temp = EXTI->EMR;
+ temp &= ~((uint32_t)iocurrent);
+ if((GPIO_Init->Mode & GPIO_MODE_EVT) == GPIO_MODE_EVT)
+ {
+ temp |= iocurrent;
+ }
+ EXTI->EMR = temp;
+
+ /* Clear Rising Falling edge configuration */
+ temp = EXTI->RTSR;
+ temp &= ~((uint32_t)iocurrent);
+ if((GPIO_Init->Mode & RISING_EDGE) == RISING_EDGE)
+ {
+ temp |= iocurrent;
+ }
+ EXTI->RTSR = temp;
+
+ temp = EXTI->FTSR;
+ temp &= ~((uint32_t)iocurrent);
+ if((GPIO_Init->Mode & FALLING_EDGE) == FALLING_EDGE)
+ {
+ temp |= iocurrent;
+ }
+ EXTI->FTSR = temp;
+ }
+ }
+ }
+}
+
+/**
+ * @brief De-initializes the GPIOx peripheral registers to their default reset values.
+ * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
+ * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
+ * @param GPIO_Pin: specifies the port bit to be written.
+ * This parameter can be one of GPIO_PIN_x where x can be (0..15).
+ * @retval None
+ */
+void HAL_GPIO_DeInit(GPIO_TypeDef *GPIOx, uint32_t GPIO_Pin)
+{
+ uint32_t position;
+ uint32_t ioposition = 0x00;
+ uint32_t iocurrent = 0x00;
+ uint32_t tmp = 0x00;
+
+ /* Check the parameters */
+ assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
+
+ /* Configure the port pins */
+ for(position = 0; position < GPIO_NUMBER; position++)
+ {
+ /* Get the IO position */
+ ioposition = ((uint32_t)0x01) << position;
+ /* Get the current IO position */
+ iocurrent = (GPIO_Pin) & ioposition;
+
+ if(iocurrent == ioposition)
+ {
+ /*------------------------- GPIO Mode Configuration --------------------*/
+ /* Configure IO Direction in Input Floating Mode */
+ GPIOx->MODER &= ~(GPIO_MODER_MODER0 << (position * 2));
+
+ /* Configure the default Alternate Function in current IO */
+ GPIOx->AFR[position >> 3] &= ~((uint32_t)0xF << ((uint32_t)(position & (uint32_t)0x07) * 4)) ;
+
+ /* Configure the default value for IO Speed */
+ GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (position * 2));
+
+ /* Configure the default value IO Output Type */
+ GPIOx->OTYPER &= ~(GPIO_OTYPER_OT_0 << position) ;
+
+ /* Deactivate the Pull-up and Pull-down resistor for the current IO */
+ GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << (position * 2));
+
+ /*------------------------- EXTI Mode Configuration --------------------*/
+ tmp = SYSCFG->EXTICR[position >> 2];
+ tmp &= (((uint32_t)0x0F) << (4 * (position & 0x03)));
+ if(tmp == ((uint32_t)(GPIO_GET_INDEX(GPIOx)) << (4 * (position & 0x03))))
+ {
+ /* Configure the External Interrupt or event for the current IO */
+ tmp = ((uint32_t)0x0F) << (4 * (position & 0x03));
+ SYSCFG->EXTICR[position >> 2] &= ~tmp;
+
+ /* Clear EXTI line configuration */
+ EXTI->IMR &= ~((uint32_t)iocurrent);
+ EXTI->EMR &= ~((uint32_t)iocurrent);
+
+ /* Clear Rising Falling edge configuration */
+ EXTI->RTSR &= ~((uint32_t)iocurrent);
+ EXTI->FTSR &= ~((uint32_t)iocurrent);
+ }
+ }
+ }
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup GPIO_Exported_Functions_Group2 IO operation functions
+ * @brief GPIO Read and Write
+ *
+@verbatim
+ ===============================================================================
+ ##### IO operation functions #####
+ ===============================================================================
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Reads the specified input port pin.
+ * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
+ * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
+ * @param GPIO_Pin: specifies the port bit to read.
+ * This parameter can be GPIO_PIN_x where x can be (0..15).
+ * @retval The input port pin value.
+ */
+GPIO_PinState HAL_GPIO_ReadPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
+{
+ GPIO_PinState bitstatus;
+
+ /* Check the parameters */
+ assert_param(IS_GPIO_PIN(GPIO_Pin));
+
+ if((GPIOx->IDR & GPIO_Pin) != (uint32_t)GPIO_PIN_RESET)
+ {
+ bitstatus = GPIO_PIN_SET;
+ }
+ else
+ {
+ bitstatus = GPIO_PIN_RESET;
+ }
+ return bitstatus;
+}
+
+/**
+ * @brief Sets or clears the selected data port bit.
+ *
+ * @note This function uses GPIOx_BSRR register to allow atomic read/modify
+ * accesses. In this way, there is no risk of an IRQ occurring between
+ * the read and the modify access.
+ *
+ * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
+ * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
+ * @param GPIO_Pin: specifies the port bit to be written.
+ * This parameter can be one of GPIO_PIN_x where x can be (0..15).
+ * @param PinState: specifies the value to be written to the selected bit.
+ * This parameter can be one of the GPIO_PinState enum values:
+ * @arg GPIO_PIN_RESET: to clear the port pin
+ * @arg GPIO_PIN_SET: to set the port pin
+ * @retval None
+ */
+void HAL_GPIO_WritePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState)
+{
+ /* Check the parameters */
+ assert_param(IS_GPIO_PIN(GPIO_Pin));
+ assert_param(IS_GPIO_PIN_ACTION(PinState));
+
+ if(PinState != GPIO_PIN_RESET)
+ {
+ GPIOx->BSRR = GPIO_Pin;
+ }
+ else
+ {
+ GPIOx->BSRR = (uint32_t)GPIO_Pin << 16;
+ }
+}
+
+/**
+ * @brief Toggles the specified GPIO pins.
+ * @param GPIOx: Where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
+ * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
+ * @param GPIO_Pin: Specifies the pins to be toggled.
+ * @retval None
+ */
+void HAL_GPIO_TogglePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
+{
+ /* Check the parameters */
+ assert_param(IS_GPIO_PIN(GPIO_Pin));
+
+ GPIOx->ODR ^= GPIO_Pin;
+}
+
+/**
+ * @brief Locks GPIO Pins configuration registers.
+ * @note The locked registers are GPIOx_MODER, GPIOx_OTYPER, GPIOx_OSPEEDR,
+ * GPIOx_PUPDR, GPIOx_AFRL and GPIOx_AFRH.
+ * @note The configuration of the locked GPIO pins can no longer be modified
+ * until the next reset.
+ * @param GPIOx: where x can be (A..F) to select the GPIO peripheral for STM32F4 family
+ * @param GPIO_Pin: specifies the port bit to be locked.
+ * This parameter can be any combination of GPIO_PIN_x where x can be (0..15).
+ * @retval None
+ */
+HAL_StatusTypeDef HAL_GPIO_LockPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
+{
+ __IO uint32_t tmp = GPIO_LCKR_LCKK;
+
+ /* Check the parameters */
+ assert_param(IS_GPIO_PIN(GPIO_Pin));
+
+ /* Apply lock key write sequence */
+ tmp |= GPIO_Pin;
+ /* Set LCKx bit(s): LCKK='1' + LCK[15-0] */
+ GPIOx->LCKR = tmp;
+ /* Reset LCKx bit(s): LCKK='0' + LCK[15-0] */
+ GPIOx->LCKR = GPIO_Pin;
+ /* Set LCKx bit(s): LCKK='1' + LCK[15-0] */
+ GPIOx->LCKR = tmp;
+ /* Read LCKK bit*/
+ tmp = GPIOx->LCKR;
+
+ if((GPIOx->LCKR & GPIO_LCKR_LCKK) != RESET)
+ {
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_ERROR;
+ }
+}
+
+/**
+ * @brief This function handles EXTI interrupt request.
+ * @param GPIO_Pin: Specifies the pins connected EXTI line
+ * @retval None
+ */
+void HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin)
+{
+ /* EXTI line interrupt detected */
+ if(__HAL_GPIO_EXTI_GET_IT(GPIO_Pin) != RESET)
+ {
+ __HAL_GPIO_EXTI_CLEAR_IT(GPIO_Pin);
+ HAL_GPIO_EXTI_Callback(GPIO_Pin);
+ }
+}
+
+/**
+ * @brief EXTI line detection callbacks.
+ * @param GPIO_Pin: Specifies the pins connected EXTI line
+ * @retval None
+ */
+__weak void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
+{
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_GPIO_EXTI_Callback could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+
+/**
+ * @}
+ */
+
+#endif /* HAL_GPIO_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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