stm32f4xx_gpio.c
561 lines
| 20.0 KiB
| text/x-c
|
CLexer
jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
|
r18 | /** | ||
****************************************************************************** | ||||
* @file stm32f4xx_gpio.c | ||||
* @author MCD Application Team | ||||
* @version V1.0.0RC1 | ||||
* @date 25-August-2011 | ||||
* @brief This file provides firmware functions to manage the following | ||||
* functionalities of the GPIO peripheral: | ||||
* - Initialization and Configuration | ||||
* - GPIO Read and Write | ||||
* - GPIO Alternate functions configuration | ||||
* | ||||
* @verbatim | ||||
* | ||||
* =================================================================== | ||||
* How to use this driver | ||||
* =================================================================== | ||||
* 1. Enable the GPIO AHB clock using the following function | ||||
* RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOx, ENABLE); | ||||
* | ||||
* 2. Configure the GPIO pin(s) using GPIO_Init() | ||||
* Four possible configuration are available for each pin: | ||||
* - Input: Floating, Pull-up, Pull-down. | ||||
* - Output: Push-Pull (Pull-up, Pull-down or no Pull) | ||||
* Open Drain (Pull-up, Pull-down or no Pull). | ||||
* In output mode, the speed is configurable: 2 MHz, 25 MHz, | ||||
* 50 MHz or 100 MHz. | ||||
* - Alternate Function: Push-Pull (Pull-up, Pull-down or no Pull) | ||||
* Open Drain (Pull-up, Pull-down or no Pull). | ||||
* - Analog: required mode when a pin is to be used as ADC channel | ||||
* or DAC output. | ||||
* | ||||
* 3- Peripherals alternate function: | ||||
* - For ADC and DAC, configure the desired pin in analog mode using | ||||
* GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AN; | ||||
* - For other peripherals (TIM, USART...): | ||||
* - Connect the pin to the desired peripherals' Alternate | ||||
* Function (AF) using GPIO_PinAFConfig() function | ||||
* - Configure the desired pin in alternate function mode using | ||||
* GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AF | ||||
* - Select the type, pull-up/pull-down and output speed via | ||||
* GPIO_PuPd, GPIO_OType and GPIO_Speed members | ||||
* - Call GPIO_Init() function | ||||
* | ||||
* 4. To get the level of a pin configured in input mode use GPIO_ReadInputDataBit() | ||||
* | ||||
* 5. To set/reset the level of a pin configured in output mode use | ||||
* GPIO_SetBits()/GPIO_ResetBits() | ||||
* | ||||
* 6. During and just after reset, the alternate functions are not | ||||
* active and the GPIO pins are configured in input floating mode | ||||
* (except JTAG pins). | ||||
* | ||||
* 7. 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. | ||||
* | ||||
* 8. 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 | ||||
* | ||||
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS | ||||
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE | ||||
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY | ||||
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING | ||||
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE | ||||
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. | ||||
* | ||||
* <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2> | ||||
****************************************************************************** | ||||
*/ | ||||
/* Includes ------------------------------------------------------------------*/ | ||||
#include "stm32f4xx_gpio.h" | ||||
#include "stm32f4xx_rcc.h" | ||||
/** @addtogroup STM32F4xx_StdPeriph_Driver | ||||
* @{ | ||||
*/ | ||||
/** @defgroup GPIO | ||||
* @brief GPIO driver modules | ||||
* @{ | ||||
*/ | ||||
/* Private typedef -----------------------------------------------------------*/ | ||||
/* Private define ------------------------------------------------------------*/ | ||||
/* Private macro -------------------------------------------------------------*/ | ||||
/* Private variables ---------------------------------------------------------*/ | ||||
/* Private function prototypes -----------------------------------------------*/ | ||||
/* Private functions ---------------------------------------------------------*/ | ||||
/** @defgroup GPIO_Private_Functions | ||||
* @{ | ||||
*/ | ||||
/** @defgroup GPIO_Group1 Initialization and Configuration | ||||
* @brief Initialization and Configuration | ||||
* | ||||
@verbatim | ||||
=============================================================================== | ||||
Initialization and Configuration | ||||
=============================================================================== | ||||
@endverbatim | ||||
* @{ | ||||
*/ | ||||
/** | ||||
* @brief Deinitializes the GPIOx peripheral registers to their default reset values. | ||||
* @note By default, The GPIO pins are configured in input floating mode (except JTAG pins). | ||||
* @param GPIOx: where x can be (A..I) to select the GPIO peripheral. | ||||
* @retval None | ||||
*/ | ||||
void GPIO_DeInit(GPIO_TypeDef* GPIOx) | ||||
{ | ||||
/* Check the parameters */ | ||||
assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); | ||||
if (GPIOx == GPIOA) | ||||
{ | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOA, ENABLE); | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOA, DISABLE); | ||||
} | ||||
else if (GPIOx == GPIOB) | ||||
{ | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOB, ENABLE); | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOB, DISABLE); | ||||
} | ||||
else if (GPIOx == GPIOC) | ||||
{ | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOC, ENABLE); | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOC, DISABLE); | ||||
} | ||||
else if (GPIOx == GPIOD) | ||||
{ | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOD, ENABLE); | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOD, DISABLE); | ||||
} | ||||
else if (GPIOx == GPIOE) | ||||
{ | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOE, ENABLE); | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOE, DISABLE); | ||||
} | ||||
else if (GPIOx == GPIOF) | ||||
{ | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOF, ENABLE); | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOF, DISABLE); | ||||
} | ||||
else if (GPIOx == GPIOG) | ||||
{ | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOG, ENABLE); | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOG, DISABLE); | ||||
} | ||||
else if (GPIOx == GPIOH) | ||||
{ | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOH, ENABLE); | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOH, DISABLE); | ||||
} | ||||
else | ||||
{ | ||||
if (GPIOx == GPIOI) | ||||
{ | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOI, ENABLE); | ||||
RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_GPIOI, DISABLE); | ||||
} | ||||
} | ||||
} | ||||
/** | ||||
* @brief Initializes the GPIOx peripheral according to the specified parameters in the GPIO_InitStruct. | ||||
* @param GPIOx: where x can be (A..I) to select the GPIO peripheral. | ||||
* @param GPIO_InitStruct: pointer to a GPIO_InitTypeDef structure that contains | ||||
* the configuration information for the specified GPIO peripheral. | ||||
* @retval None | ||||
*/ | ||||
void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct) | ||||
{ | ||||
uint32_t pinpos = 0x00, pos = 0x00 , currentpin = 0x00; | ||||
/* Check the parameters */ | ||||
assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); | ||||
assert_param(IS_GPIO_PIN(GPIO_InitStruct->GPIO_Pin)); | ||||
assert_param(IS_GPIO_MODE(GPIO_InitStruct->GPIO_Mode)); | ||||
assert_param(IS_GPIO_PUPD(GPIO_InitStruct->GPIO_PuPd)); | ||||
/* -------------------------Configure the port pins---------------- */ | ||||
/*-- GPIO Mode Configuration --*/ | ||||
for (pinpos = 0x00; pinpos < 0x10; pinpos++) | ||||
{ | ||||
pos = ((uint32_t)0x01) << pinpos; | ||||
/* Get the port pins position */ | ||||
currentpin = (GPIO_InitStruct->GPIO_Pin) & pos; | ||||
if (currentpin == pos) | ||||
{ | ||||
GPIOx->MODER &= ~(GPIO_MODER_MODER0 << (pinpos * 2)); | ||||
GPIOx->MODER |= (((uint32_t)GPIO_InitStruct->GPIO_Mode) << (pinpos * 2)); | ||||
if ((GPIO_InitStruct->GPIO_Mode == GPIO_Mode_OUT) || (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_AF)) | ||||
{ | ||||
/* Check Speed mode parameters */ | ||||
assert_param(IS_GPIO_SPEED(GPIO_InitStruct->GPIO_Speed)); | ||||
/* Speed mode configuration */ | ||||
GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (pinpos * 2)); | ||||
GPIOx->OSPEEDR |= ((uint32_t)(GPIO_InitStruct->GPIO_Speed) << (pinpos * 2)); | ||||
/* Check Output mode parameters */ | ||||
assert_param(IS_GPIO_OTYPE(GPIO_InitStruct->GPIO_OType)); | ||||
/* Output mode configuration*/ | ||||
GPIOx->OTYPER &= ~((GPIO_OTYPER_OT_0) << ((uint16_t)pinpos)) ; | ||||
GPIOx->OTYPER |= (uint16_t)(((uint16_t)GPIO_InitStruct->GPIO_OType) << ((uint16_t)pinpos)); | ||||
} | ||||
/* Pull-up Pull down resistor configuration*/ | ||||
GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << ((uint16_t)pinpos * 2)); | ||||
GPIOx->PUPDR |= (((uint32_t)GPIO_InitStruct->GPIO_PuPd) << (pinpos * 2)); | ||||
} | ||||
} | ||||
} | ||||
/** | ||||
* @brief Fills each GPIO_InitStruct member with its default value. | ||||
* @param GPIO_InitStruct : pointer to a GPIO_InitTypeDef structure which will be initialized. | ||||
* @retval None | ||||
*/ | ||||
void GPIO_StructInit(GPIO_InitTypeDef* GPIO_InitStruct) | ||||
{ | ||||
/* Reset GPIO init structure parameters values */ | ||||
GPIO_InitStruct->GPIO_Pin = GPIO_Pin_All; | ||||
GPIO_InitStruct->GPIO_Mode = GPIO_Mode_IN; | ||||
GPIO_InitStruct->GPIO_Speed = GPIO_Speed_2MHz; | ||||
GPIO_InitStruct->GPIO_OType = GPIO_OType_PP; | ||||
GPIO_InitStruct->GPIO_PuPd = GPIO_PuPd_NOPULL; | ||||
} | ||||
/** | ||||
* @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..I) 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 | ||||
*/ | ||||
void GPIO_PinLockConfig(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin) | ||||
{ | ||||
__IO uint32_t tmp = 0x00010000; | ||||
/* Check the parameters */ | ||||
assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); | ||||
assert_param(IS_GPIO_PIN(GPIO_Pin)); | ||||
tmp |= GPIO_Pin; | ||||
/* Set LCKK bit */ | ||||
GPIOx->LCKR = tmp; | ||||
/* Reset LCKK bit */ | ||||
GPIOx->LCKR = GPIO_Pin; | ||||
/* Set LCKK bit */ | ||||
GPIOx->LCKR = tmp; | ||||
/* Read LCKK bit*/ | ||||
tmp = GPIOx->LCKR; | ||||
/* Read LCKK bit*/ | ||||
tmp = GPIOx->LCKR; | ||||
} | ||||
/** | ||||
* @} | ||||
*/ | ||||
/** @defgroup GPIO_Group2 GPIO Read and Write | ||||
* @brief GPIO Read and Write | ||||
* | ||||
@verbatim | ||||
=============================================================================== | ||||
GPIO Read and Write | ||||
=============================================================================== | ||||
@endverbatim | ||||
* @{ | ||||
*/ | ||||
/** | ||||
* @brief Reads the specified input port pin. | ||||
* @param GPIOx: where x can be (A..I) 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. | ||||
*/ | ||||
uint8_t GPIO_ReadInputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin) | ||||
{ | ||||
uint8_t bitstatus = 0x00; | ||||
/* Check the parameters */ | ||||
assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); | ||||
assert_param(IS_GET_GPIO_PIN(GPIO_Pin)); | ||||
if ((GPIOx->IDR & GPIO_Pin) != (uint32_t)Bit_RESET) | ||||
{ | ||||
bitstatus = (uint8_t)Bit_SET; | ||||
} | ||||
else | ||||
{ | ||||
bitstatus = (uint8_t)Bit_RESET; | ||||
} | ||||
return bitstatus; | ||||
} | ||||
/** | ||||
* @brief Reads the specified GPIO input data port. | ||||
* @param GPIOx: where x can be (A..I) to select the GPIO peripheral. | ||||
* @retval GPIO input data port value. | ||||
*/ | ||||
uint16_t GPIO_ReadInputData(GPIO_TypeDef* GPIOx) | ||||
{ | ||||
/* Check the parameters */ | ||||
assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); | ||||
return ((uint16_t)GPIOx->IDR); | ||||
} | ||||
/** | ||||
* @brief Reads the specified output data port bit. | ||||
* @param GPIOx: where x can be (A..I) 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 output port pin value. | ||||
*/ | ||||
uint8_t GPIO_ReadOutputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin) | ||||
{ | ||||
uint8_t bitstatus = 0x00; | ||||
/* Check the parameters */ | ||||
assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); | ||||
assert_param(IS_GET_GPIO_PIN(GPIO_Pin)); | ||||
if ((GPIOx->ODR & GPIO_Pin) != (uint32_t)Bit_RESET) | ||||
{ | ||||
bitstatus = (uint8_t)Bit_SET; | ||||
} | ||||
else | ||||
{ | ||||
bitstatus = (uint8_t)Bit_RESET; | ||||
} | ||||
return bitstatus; | ||||
} | ||||
/** | ||||
* @brief Reads the specified GPIO output data port. | ||||
* @param GPIOx: where x can be (A..I) to select the GPIO peripheral. | ||||
* @retval GPIO output data port value. | ||||
*/ | ||||
uint16_t GPIO_ReadOutputData(GPIO_TypeDef* GPIOx) | ||||
{ | ||||
/* Check the parameters */ | ||||
assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); | ||||
return ((uint16_t)GPIOx->ODR); | ||||
} | ||||
/** | ||||
* @brief Sets the selected data port bits. | ||||
* @note This functions 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..I) to select the GPIO peripheral. | ||||
* @param GPIO_Pin: specifies the port bits to be written. | ||||
* This parameter can be any combination of GPIO_Pin_x where x can be (0..15). | ||||
* @retval None | ||||
*/ | ||||
void GPIO_SetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin) | ||||
{ | ||||
/* Check the parameters */ | ||||
assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); | ||||
assert_param(IS_GPIO_PIN(GPIO_Pin)); | ||||
GPIOx->BSRRL = GPIO_Pin; | ||||
} | ||||
/** | ||||
* @brief Clears the selected data port bits. | ||||
* @note This functions 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..I) to select the GPIO peripheral. | ||||
* @param GPIO_Pin: specifies the port bits to be written. | ||||
* This parameter can be any combination of GPIO_Pin_x where x can be (0..15). | ||||
* @retval None | ||||
*/ | ||||
void GPIO_ResetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin) | ||||
{ | ||||
/* Check the parameters */ | ||||
assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); | ||||
assert_param(IS_GPIO_PIN(GPIO_Pin)); | ||||
GPIOx->BSRRH = GPIO_Pin; | ||||
} | ||||
/** | ||||
* @brief Sets or clears the selected data port bit. | ||||
* @param GPIOx: where x can be (A..I) 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 BitVal: specifies the value to be written to the selected bit. | ||||
* This parameter can be one of the BitAction enum values: | ||||
* @arg Bit_RESET: to clear the port pin | ||||
* @arg Bit_SET: to set the port pin | ||||
* @retval None | ||||
*/ | ||||
void GPIO_WriteBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, BitAction BitVal) | ||||
{ | ||||
/* Check the parameters */ | ||||
assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); | ||||
assert_param(IS_GET_GPIO_PIN(GPIO_Pin)); | ||||
assert_param(IS_GPIO_BIT_ACTION(BitVal)); | ||||
if (BitVal != Bit_RESET) | ||||
{ | ||||
GPIOx->BSRRL = GPIO_Pin; | ||||
} | ||||
else | ||||
{ | ||||
GPIOx->BSRRH = GPIO_Pin ; | ||||
} | ||||
} | ||||
/** | ||||
* @brief Writes data to the specified GPIO data port. | ||||
* @param GPIOx: where x can be (A..I) to select the GPIO peripheral. | ||||
* @param PortVal: specifies the value to be written to the port output data register. | ||||
* @retval None | ||||
*/ | ||||
void GPIO_Write(GPIO_TypeDef* GPIOx, uint16_t PortVal) | ||||
{ | ||||
/* Check the parameters */ | ||||
assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); | ||||
GPIOx->ODR = PortVal; | ||||
} | ||||
/** | ||||
* @brief Toggles the specified GPIO pins.. | ||||
* @param GPIOx: where x can be (A..I) to select the GPIO peripheral. | ||||
* @param GPIO_Pin: Specifies the pins to be toggled. | ||||
* @retval None | ||||
*/ | ||||
void GPIO_ToggleBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin) | ||||
{ | ||||
/* Check the parameters */ | ||||
assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); | ||||
GPIOx->ODR ^= GPIO_Pin; | ||||
} | ||||
/** | ||||
* @} | ||||
*/ | ||||
/** @defgroup GPIO_Group3 GPIO Alternate functions configuration function | ||||
* @brief GPIO Alternate functions configuration function | ||||
* | ||||
@verbatim | ||||
=============================================================================== | ||||
GPIO Alternate functions configuration function | ||||
=============================================================================== | ||||
@endverbatim | ||||
* @{ | ||||
*/ | ||||
/** | ||||
* @brief Changes the mapping of the specified pin. | ||||
* @param GPIOx: where x can be (A..I) to select the GPIO peripheral. | ||||
* @param GPIO_PinSource: specifies the pin for the Alternate function. | ||||
* This parameter can be GPIO_PinSourcex where x can be (0..15). | ||||
* @param GPIO_AFSelection: selects the pin to used as Alternate function. | ||||
* This parameter can be one of the following values: | ||||
* @arg GPIO_AF_RTC_50Hz: Connect RTC_50Hz pin to AF0 (default after reset) | ||||
* @arg GPIO_AF_MCO: Connect MCO pin (MCO1 and MCO2) to AF0 (default after reset) | ||||
* @arg GPIO_AF_TAMPER: Connect TAMPER pins (TAMPER_1 and TAMPER_2) to AF0 (default after reset) | ||||
* @arg GPIO_AF_SWJ: Connect SWJ pins (SWD and JTAG)to AF0 (default after reset) | ||||
* @arg GPIO_AF_TRACE: Connect TRACE pins to AF0 (default after reset) | ||||
* @arg GPIO_AF_TIM1: Connect TIM1 pins to AF1 | ||||
* @arg GPIO_AF_TIM2: Connect TIM2 pins to AF1 | ||||
* @arg GPIO_AF_TIM3: Connect TIM3 pins to AF2 | ||||
* @arg GPIO_AF_TIM4: Connect TIM4 pins to AF2 | ||||
* @arg GPIO_AF_TIM5: Connect TIM5 pins to AF2 | ||||
* @arg GPIO_AF_TIM8: Connect TIM8 pins to AF3 | ||||
* @arg GPIO_AF_TIM9: Connect TIM9 pins to AF3 | ||||
* @arg GPIO_AF_TIM10: Connect TIM10 pins to AF3 | ||||
* @arg GPIO_AF_TIM11: Connect TIM11 pins to AF3 | ||||
* @arg GPIO_AF_I2C1: Connect I2C1 pins to AF4 | ||||
* @arg GPIO_AF_I2C2: Connect I2C2 pins to AF4 | ||||
* @arg GPIO_AF_I2C3: Connect I2C3 pins to AF4 | ||||
* @arg GPIO_AF_SPI1: Connect SPI1 pins to AF5 | ||||
* @arg GPIO_AF_SPI2: Connect SPI2/I2S2 pins to AF5 | ||||
* @arg GPIO_AF_SPI3: Connect SPI3/I2S3 pins to AF6 | ||||
* @arg GPIO_AF_I2S3ext: Connect I2S3ext pins to AF7 | ||||
* @arg GPIO_AF_USART1: Connect USART1 pins to AF7 | ||||
* @arg GPIO_AF_USART2: Connect USART2 pins to AF7 | ||||
* @arg GPIO_AF_USART3: Connect USART3 pins to AF7 | ||||
* @arg GPIO_AF_UART4: Connect UART4 pins to AF8 | ||||
* @arg GPIO_AF_UART5: Connect UART5 pins to AF8 | ||||
* @arg GPIO_AF_USART6: Connect USART6 pins to AF8 | ||||
* @arg GPIO_AF_CAN1: Connect CAN1 pins to AF9 | ||||
* @arg GPIO_AF_CAN2: Connect CAN2 pins to AF9 | ||||
* @arg GPIO_AF_TIM12: Connect TIM12 pins to AF9 | ||||
* @arg GPIO_AF_TIM13: Connect TIM13 pins to AF9 | ||||
* @arg GPIO_AF_TIM14: Connect TIM14 pins to AF9 | ||||
* @arg GPIO_AF_OTG_FS: Connect OTG_FS pins to AF10 | ||||
* @arg GPIO_AF_OTG_HS: Connect OTG_HS pins to AF10 | ||||
* @arg GPIO_AF_ETH: Connect ETHERNET pins to AF11 | ||||
* @arg GPIO_AF_FSMC: Connect FSMC pins to AF12 | ||||
* @arg GPIO_AF_OTG_HS_FS: Connect OTG HS (configured in FS) pins to AF12 | ||||
* @arg GPIO_AF_SDIO: Connect SDIO pins to AF12 | ||||
* @arg GPIO_AF_DCMI: Connect DCMI pins to AF13 | ||||
* @arg GPIO_AF_EVENTOUT: Connect EVENTOUT pins to AF15 | ||||
* @retval None | ||||
*/ | ||||
void GPIO_PinAFConfig(GPIO_TypeDef* GPIOx, uint16_t GPIO_PinSource, uint8_t GPIO_AF) | ||||
{ | ||||
uint32_t temp = 0x00; | ||||
uint32_t temp_2 = 0x00; | ||||
/* Check the parameters */ | ||||
assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); | ||||
assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource)); | ||||
assert_param(IS_GPIO_AF(GPIO_AF)); | ||||
temp = ((uint32_t)(GPIO_AF) << ((uint32_t)((uint32_t)GPIO_PinSource & (uint32_t)0x07) * 4)) ; | ||||
GPIOx->AFR[GPIO_PinSource >> 0x03] &= ~((uint32_t)0xF << ((uint32_t)((uint32_t)GPIO_PinSource & (uint32_t)0x07) * 4)) ; | ||||
temp_2 = GPIOx->AFR[GPIO_PinSource >> 0x03] | temp; | ||||
GPIOx->AFR[GPIO_PinSource >> 0x03] = temp_2; | ||||
} | ||||
/** | ||||
* @} | ||||
*/ | ||||
/** | ||||
* @} | ||||
*/ | ||||
/** | ||||
* @} | ||||
*/ | ||||
/** | ||||
* @} | ||||
*/ | ||||
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ | ||||