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Diffstat (limited to 'c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_gpio.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_gpio.c | 545 |
1 files changed, 545 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_gpio.c b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_gpio.c new file mode 100644 index 0000000000..7098f57be6 --- /dev/null +++ b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_gpio.c @@ -0,0 +1,545 @@ +/** + ****************************************************************************** + * @file stm32f4xx_hal_gpio.c + * @author MCD Application Team + * @version V1.4.0 + * @date 14-August-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****/ |