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Diffstat (limited to 'stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c')
| -rw-r--r-- | stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c | 597 |
1 files changed, 597 insertions, 0 deletions
diff --git a/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c new file mode 100644 index 0000000..9e048ad --- /dev/null +++ b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c @@ -0,0 +1,597 @@ +/** + ****************************************************************************** + * @file stm32f1xx_hal_gpio.c + * @author MCD Application Team + * @version V1.0.4 + * @date 29-April-2016 + * @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 20 edge detectors in connectivity + line devices, or 19 edge detectors in other devices for generating event/interrupt requests. + Each input line can be independently configured to select the type (event or interrupt) and + the corresponding trigger event (rising or falling or both). Each line can also masked + independently. A pending register maintains the status line of the interrupt requests + + ##### How to use this driver ##### + ============================================================================== + [..] + (#) Enable the GPIO APB2 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 + (++) 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 PD0 and PD1, respectively, when the HSE oscillator is off. + The HSE has priority over the GPIO function. + + @endverbatim + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2016 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 "stm32f1xx_hal.h" + +/** @addtogroup STM32F1xx_HAL_Driver + * @{ + */ + +/** @defgroup GPIO GPIO + * @brief GPIO HAL module driver + * @{ + */ + +#ifdef HAL_GPIO_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/** @defgroup 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) + +/* Definitions for bit manipulation of CRL and CRH register */ +#define GPIO_CR_MODE_INPUT ((uint32_t)0x00000000) /*!< 00: Input mode (reset state) */ +#define GPIO_CR_CNF_ANALOG ((uint32_t)0x00000000) /*!< 00: Analog mode */ +#define GPIO_CR_CNF_INPUT_FLOATING ((uint32_t)0x00000004) /*!< 01: Floating input (reset state) */ +#define GPIO_CR_CNF_INPUT_PU_PD ((uint32_t)0x00000008) /*!< 10: Input with pull-up / pull-down */ +#define GPIO_CR_CNF_GP_OUTPUT_PP ((uint32_t)0x00000000) /*!< 00: General purpose output push-pull */ +#define GPIO_CR_CNF_GP_OUTPUT_OD ((uint32_t)0x00000004) /*!< 01: General purpose output Open-drain */ +#define GPIO_CR_CNF_AF_OUTPUT_PP ((uint32_t)0x00000008) /*!< 10: Alternate function output Push-pull */ +#define GPIO_CR_CNF_AF_OUTPUT_OD ((uint32_t)0x0000000C) /*!< 11: Alternate function output Open-drain */ + +/** + * @} + */ + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/** @defgroup GPIO_Exported_Functions GPIO Exported Functions + * @{ + */ + +/** @defgroup GPIO_Exported_Functions_Group1 Initialization and deinitialization functions + * @brief Initialization and Configuration functions + * +@verbatim + =============================================================================== + ##### Initialization and deinitialization 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..G depending on device used) to select the GPIO peripheral + * @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; + uint32_t config = 0x00; + __IO uint32_t *configregister; /* Store the address of CRL or CRH register based on pin number */ + uint32_t registeroffset = 0; /* offset used during computation of CNF and MODE bits placement inside CRL or CRH register */ + + /* 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)); + + /* 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) + { + /* Check the Alternate function parameters */ + assert_param(IS_GPIO_AF_INSTANCE(GPIOx)); + + /* Based on the required mode, filling config variable with MODEy[1:0] and CNFy[3:2] corresponding bits */ + switch (GPIO_Init->Mode) + { + /* If we are configuring the pin in OUTPUT push-pull mode */ + case GPIO_MODE_OUTPUT_PP: + /* Check the GPIO speed parameter */ + assert_param(IS_GPIO_SPEED(GPIO_Init->Speed)); + config = GPIO_Init->Speed + GPIO_CR_CNF_GP_OUTPUT_PP; + break; + + /* If we are configuring the pin in OUTPUT open-drain mode */ + case GPIO_MODE_OUTPUT_OD: + /* Check the GPIO speed parameter */ + assert_param(IS_GPIO_SPEED(GPIO_Init->Speed)); + config = GPIO_Init->Speed + GPIO_CR_CNF_GP_OUTPUT_OD; + break; + + /* If we are configuring the pin in ALTERNATE FUNCTION push-pull mode */ + case GPIO_MODE_AF_PP: + /* Check the GPIO speed parameter */ + assert_param(IS_GPIO_SPEED(GPIO_Init->Speed)); + config = GPIO_Init->Speed + GPIO_CR_CNF_AF_OUTPUT_PP; + break; + + /* If we are configuring the pin in ALTERNATE FUNCTION open-drain mode */ + case GPIO_MODE_AF_OD: + /* Check the GPIO speed parameter */ + assert_param(IS_GPIO_SPEED(GPIO_Init->Speed)); + config = GPIO_Init->Speed + GPIO_CR_CNF_AF_OUTPUT_OD; + break; + + /* If we are configuring the pin in INPUT (also applicable to EVENT and IT mode) */ + case GPIO_MODE_INPUT: + case GPIO_MODE_IT_RISING: + case GPIO_MODE_IT_FALLING: + case GPIO_MODE_IT_RISING_FALLING: + case GPIO_MODE_EVT_RISING: + case GPIO_MODE_EVT_FALLING: + case GPIO_MODE_EVT_RISING_FALLING: + /* Check the GPIO pull parameter */ + assert_param(IS_GPIO_PULL(GPIO_Init->Pull)); + if(GPIO_Init->Pull == GPIO_NOPULL) + { + config = GPIO_CR_MODE_INPUT + GPIO_CR_CNF_INPUT_FLOATING; + } + else if(GPIO_Init->Pull == GPIO_PULLUP) + { + config = GPIO_CR_MODE_INPUT + GPIO_CR_CNF_INPUT_PU_PD; + + /* Set the corresponding ODR bit */ + GPIOx->BSRR = ioposition; + } + else /* GPIO_PULLDOWN */ + { + config = GPIO_CR_MODE_INPUT + GPIO_CR_CNF_INPUT_PU_PD; + + /* Reset the corresponding ODR bit */ + GPIOx->BRR = ioposition; + } + break; + + /* If we are configuring the pin in INPUT analog mode */ + case GPIO_MODE_ANALOG: + config = GPIO_CR_MODE_INPUT + GPIO_CR_CNF_ANALOG; + break; + + /* Parameters are checked with assert_param */ + default: + break; + } + + /* Check if the current bit belongs to first half or last half of the pin count number + in order to address CRH or CRL register*/ + configregister = (iocurrent < GPIO_PIN_8) ? &GPIOx->CRL : &GPIOx->CRH; + registeroffset = (iocurrent < GPIO_PIN_8) ? (position << 2) : ((position - 8) << 2); + + /* Apply the new configuration of the pin to the register */ + MODIFY_REG((*configregister), ((GPIO_CRL_MODE0 | GPIO_CRL_CNF0) << registeroffset ), (config << registeroffset)); + + /*--------------------- EXTI Mode Configuration ------------------------*/ + /* Configure the External Interrupt or event for the current IO */ + if((GPIO_Init->Mode & EXTI_MODE) == EXTI_MODE) + { + /* Enable AFIO Clock */ + __HAL_RCC_AFIO_CLK_ENABLE(); + temp = AFIO->EXTICR[position >> 2]; + CLEAR_BIT(temp, ((uint32_t)0x0F) << (4 * (position & 0x03))); + SET_BIT(temp, (GPIO_GET_INDEX(GPIOx)) << (4 * (position & 0x03))); + AFIO->EXTICR[position >> 2] = temp; + + + /* Configure the interrupt mask */ + if((GPIO_Init->Mode & GPIO_MODE_IT) == GPIO_MODE_IT) + { + SET_BIT(EXTI->IMR, iocurrent); + } + else + { + CLEAR_BIT(EXTI->IMR, iocurrent); + } + + /* Configure the event mask */ + if((GPIO_Init->Mode & GPIO_MODE_EVT) == GPIO_MODE_EVT) + { + SET_BIT(EXTI->EMR, iocurrent); + } + else + { + CLEAR_BIT(EXTI->EMR, iocurrent); + } + + /* Enable or disable the rising trigger */ + if((GPIO_Init->Mode & RISING_EDGE) == RISING_EDGE) + { + SET_BIT(EXTI->RTSR, iocurrent); + } + else + { + CLEAR_BIT(EXTI->RTSR, iocurrent); + } + + /* Enable or disable the falling trigger */ + if((GPIO_Init->Mode & FALLING_EDGE) == FALLING_EDGE) + { + SET_BIT(EXTI->FTSR, iocurrent); + } + else + { + CLEAR_BIT(EXTI->FTSR, iocurrent); + } + } + } + } +} + +/** + * @brief De-initializes the GPIOx peripheral registers to their default reset values. + * @param GPIOx: where x can be (A..G depending on device used) to select the GPIO peripheral + * @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 = 0x00; + uint32_t iocurrent = 0x00; + uint32_t tmp = 0x00; + __IO uint32_t *configregister; /* Store the address of CRL or CRH register based on pin number */ + uint32_t registeroffset = 0; + + /* Check the parameters */ + assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); + assert_param(IS_GPIO_PIN(GPIO_Pin)); + + /* Configure the port pins */ + while ((GPIO_Pin >> position) != 0) + { + /* Get current io position */ + iocurrent = (GPIO_Pin) & ((uint32_t)1 << position); + + if (iocurrent) + { + /*------------------------- GPIO Mode Configuration --------------------*/ + /* Check if the current bit belongs to first half or last half of the pin count number + in order to address CRH or CRL register */ + configregister = (iocurrent < GPIO_PIN_8) ? &GPIOx->CRL : &GPIOx->CRH; + registeroffset = (iocurrent < GPIO_PIN_8) ? (position << 2) : ((position - 8) << 2); + + /* CRL/CRH default value is floating input(0x04) shifted to correct position */ + MODIFY_REG(*configregister, ((GPIO_CRL_MODE0 | GPIO_CRL_CNF0) << registeroffset ), GPIO_CRL_CNF0_0 << registeroffset); + + /* ODR default value is 0 */ + CLEAR_BIT(GPIOx->ODR, iocurrent); + + /*------------------------- EXTI Mode Configuration --------------------*/ + /* Clear the External Interrupt or Event for the current IO */ + + tmp = AFIO->EXTICR[position >> 2]; + tmp &= (((uint32_t)0x0F) << (4 * (position & 0x03))); + if(tmp == (GPIO_GET_INDEX(GPIOx) << (4 * (position & 0x03)))) + { + tmp = ((uint32_t)0x0F) << (4 * (position & 0x03)); + CLEAR_BIT(AFIO->EXTICR[position >> 2], tmp); + + /* Clear EXTI line configuration */ + CLEAR_BIT(EXTI->IMR, (uint32_t)iocurrent); + CLEAR_BIT(EXTI->EMR, (uint32_t)iocurrent); + + /* Clear Rising Falling edge configuration */ + CLEAR_BIT(EXTI->RTSR, (uint32_t)iocurrent); + CLEAR_BIT(EXTI->FTSR, (uint32_t)iocurrent); + } + } + + position++; + } +} + +/** + * @} + */ + +/** @defgroup GPIO_Exported_Functions_Group2 IO operation functions + * @brief GPIO Read and Write + * +@verbatim + =============================================================================== + ##### IO operation functions ##### + =============================================================================== + [..] + This subsection provides a set of functions allowing to manage the GPIOs. + +@endverbatim + * @{ + */ +/** + * @brief Reads the specified input port pin. + * @param GPIOx: where x can be (A..G depending on device used) to select the GPIO peripheral + * @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..G depending on device used) to select the GPIO peripheral + * @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_BIT_RESET: to clear the port pin + * @arg GPIO_BIT_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 pin + * @param GPIOx: where x can be (A..G depending on device used) to select the GPIO peripheral + * @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 locking mechanism allows the IO configuration to be frozen. When the LOCK sequence +* has been applied on a port bit, it is no longer possible to modify the value of the port bit until +* the next reset. +* @param GPIOx: where x can be (A..G depending on device used) to select the GPIO peripheral +* @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_LOCK_INSTANCE(GPIOx)); + assert_param(IS_GPIO_PIN(GPIO_Pin)); + + /* Apply lock key write sequence */ + SET_BIT(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((uint32_t)(GPIOx->LCKR & GPIO_LCKR_LCKK)) + { + 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 callback + * @param GPIO_Pin: Specifies the pins connected EXTI line + * @retval None + */ +__weak void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(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****/ |