/**
|
******************************************************************************
|
* @file stm32l1xx_gpio.c
|
* @author MCD Application Team
|
* @version V1.3.1
|
* @date 20-April-2015
|
* @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 #####
|
===========================================================================
|
[..]
|
(#) Enable the GPIO AHB clock using RCC_AHBPeriphClockCmd()
|
(#) 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: Very Low, Low,
|
Medium or High.
|
(++) 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,
|
DAC output or comparator input.
|
(#) Peripherals alternate function:
|
(++) For ADC, DAC and comparators, 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.
|
(#) To get the level of a pin configured in input mode use GPIO_ReadInputDataBit()
|
(#) To set/reset the level of a pin configured in output mode use
|
GPIO_SetBits()/GPIO_ResetBits()
|
(#) 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 2015 STMicroelectronics</center></h2>
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*
|
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
|
*
|
* http://www.st.com/software_license_agreement_liberty_v2
|
*
|
* Unless required by applicable law or agreed to in writing, software
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
* See the License for the specific language governing permissions and
|
* limitations under the License.
|
*
|
******************************************************************************
|
*/
|
|
/* Includes ------------------------------------------------------------------*/
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#include "stm32l1xx_gpio.h"
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#include "stm32l1xx_rcc.h"
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|
/** @addtogroup STM32L1xx_StdPeriph_Driver
|
* @{
|
*/
|
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/** @defgroup GPIO
|
* @brief GPIO driver modules
|
* @{
|
*/
|
|
/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
|
|
/** @defgroup GPIO_Private_Functions
|
* @{
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*/
|
|
/** @defgroup GPIO_Group1 Initialization and Configuration
|
* @brief Initialization and Configuration
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*
|
@verbatim
|
===============================================================================
|
##### Initialization and Configuration #####
|
===============================================================================
|
|
@endverbatim
|
* @{
|
*/
|
|
/**
|
* @brief Deinitializes the GPIOx peripheral registers to their default reset
|
* values.
|
* By default, The GPIO pins are configured in input floating mode
|
* (except JTAG pins).
|
* @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
|
* @retval None
|
*/
|
void GPIO_DeInit(GPIO_TypeDef* GPIOx)
|
{
|
/* Check the parameters */
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assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
|
|
if(GPIOx == GPIOA)
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{
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RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOA, ENABLE);
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RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOA, DISABLE);
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}
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else if(GPIOx == GPIOB)
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{
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RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOB, ENABLE);
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RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOB, DISABLE);
|
}
|
else if(GPIOx == GPIOC)
|
{
|
RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOC, ENABLE);
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RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOC, DISABLE);
|
}
|
else if(GPIOx == GPIOD)
|
{
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RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOD, ENABLE);
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RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOD, DISABLE);
|
}
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else if(GPIOx == GPIOE)
|
{
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RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOE, ENABLE);
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RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOE, DISABLE);
|
}
|
else if(GPIOx == GPIOF)
|
{
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RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOF, ENABLE);
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RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOF, DISABLE);
|
}
|
else if(GPIOx == GPIOG)
|
{
|
RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOG, ENABLE);
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RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOG, DISABLE);
|
}
|
else
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{
|
if(GPIOx == GPIOH)
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{
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RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOH, ENABLE);
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RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOH, DISABLE);
|
}
|
}
|
}
|
|
/**
|
* @brief Initializes the GPIOx peripheral according to the specified
|
* parameters in the GPIO_InitStruct.
|
* @param GPIOx: where x can be (A..H) 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
|
*/
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void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct)
|
{
|
uint32_t pinpos = 0x00, pos = 0x00 , currentpin = 0x00;
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uint32_t tmpreg = 0x00;
|
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/* Check the parameters */
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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));
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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)
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{
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/* Use temporary variable to update MODER register configuration, to avoid
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unexpected transition in the GPIO pin configuration. */
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tmpreg = GPIOx->MODER;
|
tmpreg &= ~(GPIO_MODER_MODER0 << (pinpos * 2));
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tmpreg |= (((uint32_t)GPIO_InitStruct->GPIO_Mode) << (pinpos * 2));
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GPIOx->MODER = tmpreg;
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|
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));
|
|
/* Use temporary variable to update OSPEEDR register configuration, to avoid
|
unexpected transition in the GPIO pin configuration. */
|
tmpreg = GPIOx->OSPEEDR;
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tmpreg &= ~(GPIO_OSPEEDER_OSPEEDR0 << (pinpos * 2));
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tmpreg |= ((uint32_t)(GPIO_InitStruct->GPIO_Speed) << (pinpos * 2));
|
GPIOx->OSPEEDR = tmpreg;
|
|
/*Check Output mode parameters */
|
assert_param(IS_GPIO_OTYPE(GPIO_InitStruct->GPIO_OType));
|
|
/* Use temporary variable to update OTYPER register configuration, to avoid
|
unexpected transition in the GPIO pin configuration. */
|
tmpreg = GPIOx->OTYPER;
|
tmpreg &= ~((GPIO_OTYPER_OT_0) << ((uint16_t)pinpos));
|
tmpreg |= (uint16_t)(((uint16_t)GPIO_InitStruct->GPIO_OType) << ((uint16_t)pinpos));
|
GPIOx->OTYPER = tmpreg;
|
}
|
|
/* Use temporary variable to update PUPDR register configuration, to avoid
|
unexpected transition in the GPIO pin configuration. */
|
tmpreg = GPIOx->PUPDR;
|
tmpreg &= ~(GPIO_PUPDR_PUPDR0 << ((uint16_t)pinpos * 2));
|
tmpreg |= (((uint32_t)GPIO_InitStruct->GPIO_PuPd) << (pinpos * 2));
|
GPIOx->PUPDR = tmpreg;
|
}
|
}
|
}
|
|
/**
|
* @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;
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GPIO_InitStruct->GPIO_Speed = GPIO_Speed_400KHz;
|
GPIO_InitStruct->GPIO_OType = GPIO_OType_PP;
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GPIO_InitStruct->GPIO_PuPd = GPIO_PuPd_NOPULL;
|
}
|
|
/**
|
* @brief Locks GPIO Pins configuration registers.
|
* The locked registers are GPIOx_MODER, GPIOx_OTYPER, GPIOx_OSPEEDR,
|
* GPIOx_PUPDR, GPIOx_AFRL and GPIOx_AFRH.
|
* The configuration of the locked GPIO pins can no longer be modified
|
* until the next reset.
|
* @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
|
* @param GPIO_Pin: specifies the port bit to be written.
|
* 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..H) 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..H) 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..H) 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..H) 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.
|
* @param GPIOx: where x can be (A..H) 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).
|
* @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.
|
* @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.
|
* @param GPIOx: where x can be (A..H) 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).
|
* @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.
|
* @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..H) 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..H) 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..H) 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 functions
|
* @brief GPIO Alternate functions configuration functions
|
*
|
@verbatim
|
===============================================================================
|
##### GPIO Alternate functions configuration functions #####
|
===============================================================================
|
|
@endverbatim
|
* @{
|
*/
|
|
/**
|
* @brief Changes the mapping of the specified pin.
|
* @param GPIOx: where x can be (A..H) 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 Alternat function.
|
* This parameter can be one of the following values:
|
* @arg GPIO_AF_RTC_50Hz: RTC 50/60 Hz synchronization
|
* @arg GPIO_AF_MCO: Microcontroller clock output
|
* @arg GPIO_AF_RTC_AF1: Time stamp, Tamper, Alarm A out, Alarm B out,
|
* 512 Hz clock output (with an LSE oscillator of 32.768 kHz)
|
* @arg GPIO_AF_WKUP: wakeup
|
* @arg GPIO_AF_SWJ: SWJ (SW and JTAG)
|
* @arg GPIO_AF_TRACE: Connect TRACE pins to AF0 (default after reset)
|
* @arg GPIO_AF_TIM2c: 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_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_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_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_USB: Connect USB pins to AF10
|
* @arg GPIO_AF_LCD: Connect LCD pins to AF11
|
* @arg GPIO_AF_FSMC: Connect FSMC pins to AF12
|
* @arg GPIO_AF_SDIO: Connect SDIO pins to AF12
|
* @arg GPIO_AF_RI: Connect RI pins to AF14
|
* @arg GPIO_AF_EVENTOUT: Cortex-M3 EVENTOUT signal
|
* @note The pin should already been configured in Alternate Function mode(AF)
|
* using GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AF
|
* @note Please refer to the Alternate function mapping table in the device
|
* datasheet for the detailed mapping of the system and peripherals'
|
* alternate function I/O pins.
|
* @note EVENTOUT is not mapped on PH0, PH1 and PH2.
|
* @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 STMicroelectronics *****END OF FILE****/
|
