diff options
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 | 202 |
1 files changed, 101 insertions, 101 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 index 9e048ad..4e7c78a 100644 --- a/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c +++ b/stm32cubemx/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c @@ -5,89 +5,89 @@ * @version V1.0.4 * @date 29-April-2016 * @brief GPIO HAL module driver. - * This file provides firmware functions to manage the following + * 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 + (+) Input mode (+) Analog mode (+) Output mode (+) Alternate function mode (+) External interrupt/event lines - [..] - During and just after reset, the alternate functions and external interrupt + [..] + 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 + + [..] + 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 + [..] + 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(). - + ============================================================================== + [..] + (#) 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 + (++) 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 + (++) 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 + (++) 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 + (++) 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 + + (#) 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 + + (#) 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 + + (#) 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 + + (#) 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 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 @@ -116,8 +116,8 @@ * 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" @@ -138,14 +138,14 @@ /** @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 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 */ @@ -157,7 +157,7 @@ #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 */ - + /** * @} */ @@ -174,14 +174,14 @@ /** @defgroup GPIO_Exported_Functions_Group1 Initialization and deinitialization functions * @brief Initialization and Configuration functions * -@verbatim +@verbatim =============================================================================== ##### Initialization and deinitialization functions ##### =============================================================================== [..] This section provides functions allowing to initialize and de-initialize the GPIOs to be ready for use. - + @endverbatim * @{ */ @@ -202,7 +202,7 @@ void HAL_GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_InitTypeDef *GPIO_Init) 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)); @@ -213,7 +213,7 @@ void HAL_GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_InitTypeDef *GPIO_Init) { /* Get the IO position */ ioposition = ((uint32_t)0x01) << position; - + /* Get the current IO position */ iocurrent = (uint32_t)(GPIO_Init->Pin) & ioposition; @@ -231,28 +231,28 @@ void HAL_GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_InitTypeDef *GPIO_Init) 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: @@ -264,46 +264,46 @@ void HAL_GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_InitTypeDef *GPIO_Init) /* 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; - + 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) + if((GPIO_Init->Mode & EXTI_MODE) == EXTI_MODE) { /* Enable AFIO Clock */ __HAL_RCC_AFIO_CLK_ENABLE(); @@ -311,46 +311,46 @@ void HAL_GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_InitTypeDef *GPIO_Init) 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); - } + SET_BIT(EXTI->IMR, iocurrent); + } else { - CLEAR_BIT(EXTI->IMR, iocurrent); - } - + CLEAR_BIT(EXTI->IMR, iocurrent); + } + /* Configure the event mask */ if((GPIO_Init->Mode & GPIO_MODE_EVT) == GPIO_MODE_EVT) { - SET_BIT(EXTI->EMR, iocurrent); - } + SET_BIT(EXTI->EMR, iocurrent); + } else { - CLEAR_BIT(EXTI->EMR, iocurrent); + CLEAR_BIT(EXTI->EMR, iocurrent); } - + /* Enable or disable the rising trigger */ if((GPIO_Init->Mode & RISING_EDGE) == RISING_EDGE) { - SET_BIT(EXTI->RTSR, iocurrent); - } + SET_BIT(EXTI->RTSR, iocurrent); + } else { - CLEAR_BIT(EXTI->RTSR, iocurrent); + CLEAR_BIT(EXTI->RTSR, iocurrent); } - + /* Enable or disable the falling trigger */ if((GPIO_Init->Mode & FALLING_EDGE) == FALLING_EDGE) { - SET_BIT(EXTI->FTSR, iocurrent); - } + SET_BIT(EXTI->FTSR, iocurrent); + } else { - CLEAR_BIT(EXTI->FTSR, iocurrent); + CLEAR_BIT(EXTI->FTSR, iocurrent); } } } @@ -365,13 +365,13 @@ void HAL_GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_InitTypeDef *GPIO_Init) * @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)); @@ -389,33 +389,33 @@ void HAL_GPIO_DeInit(GPIO_TypeDef *GPIOx, uint32_t GPIO_Pin) 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++; } } @@ -424,10 +424,10 @@ void HAL_GPIO_DeInit(GPIO_TypeDef *GPIOx, uint32_t GPIO_Pin) * @} */ -/** @defgroup GPIO_Exported_Functions_Group2 IO operation functions - * @brief GPIO Read and Write +/** @defgroup GPIO_Exported_Functions_Group2 IO operation functions + * @brief GPIO Read and Write * -@verbatim +@verbatim =============================================================================== ##### IO operation functions ##### =============================================================================== @@ -464,11 +464,11 @@ GPIO_PinState HAL_GPIO_ReadPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin) /** * @brief Sets or clears the selected data port bit. - * - * @note This function uses GPIOx_BSRR register to allow atomic read/modify + * + * @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). @@ -496,7 +496,7 @@ void HAL_GPIO_WritePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, GPIO_PinState Pin /** * @brief Toggles the specified GPIO pin - * @param GPIOx: where x can be (A..G depending on device used) to select the GPIO peripheral + * @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 */ @@ -555,8 +555,8 @@ HAL_StatusTypeDef HAL_GPIO_LockPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin) void HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin) { /* EXTI line interrupt detected */ - if(__HAL_GPIO_EXTI_GET_IT(GPIO_Pin) != RESET) - { + if(__HAL_GPIO_EXTI_GET_IT(GPIO_Pin) != RESET) + { __HAL_GPIO_EXTI_CLEAR_IT(GPIO_Pin); HAL_GPIO_EXTI_Callback(GPIO_Pin); } @@ -573,7 +573,7 @@ __weak void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) 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 - */ + */ } /** |