254 lines
8.2 KiB
C
254 lines
8.2 KiB
C
/**
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******************************************************************************
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* @file stm32f1xx_ll_gpio.c
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* @author MCD Application Team
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* @brief GPIO LL module driver.
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2016 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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*/
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#if defined(USE_FULL_LL_DRIVER)
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f1xx_ll_gpio.h"
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#include "stm32f1xx_ll_bus.h"
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#ifdef USE_FULL_ASSERT
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#include "stm32_assert.h"
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#else
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#define assert_param(expr) ((void)0U)
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#endif
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/** @addtogroup STM32F1xx_LL_Driver
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* @{
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*/
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#if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG)
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/** @addtogroup GPIO_LL
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* @{
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*/
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/* Private types -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private constants ---------------------------------------------------------*/
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/* Private macros ------------------------------------------------------------*/
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/** @addtogroup GPIO_LL_Private_Macros
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* @{
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*/
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#define IS_LL_GPIO_PIN(__VALUE__) ((((__VALUE__) & LL_GPIO_PIN_ALL)!= 0u) &&\
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(((__VALUE__) & (~LL_GPIO_PIN_ALL))== 0u))
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#define IS_LL_GPIO_MODE(__VALUE__) (((__VALUE__) == LL_GPIO_MODE_ANALOG) ||\
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((__VALUE__) == LL_GPIO_MODE_FLOATING) ||\
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((__VALUE__) == LL_GPIO_MODE_INPUT) ||\
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((__VALUE__) == LL_GPIO_MODE_OUTPUT) ||\
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((__VALUE__) == LL_GPIO_MODE_ALTERNATE))
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#define IS_LL_GPIO_SPEED(__VALUE__) (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW) ||\
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((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM) ||\
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((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH))
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#define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__) (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL) ||\
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((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN))
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#define IS_LL_GPIO_PULL(__VALUE__) (((__VALUE__) == LL_GPIO_PULL_DOWN) ||\
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((__VALUE__) == LL_GPIO_PULL_UP))
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/**
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* @}
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*/
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/* Private function prototypes -----------------------------------------------*/
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/* Exported functions --------------------------------------------------------*/
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/** @addtogroup GPIO_LL_Exported_Functions
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* @{
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*/
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/** @addtogroup GPIO_LL_EF_Init
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* @{
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*/
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/**
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* @brief De-initialize GPIO registers (Registers restored to their default values).
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* @param GPIOx GPIO Port
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* @retval An ErrorStatus enumeration value:
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* - SUCCESS: GPIO registers are de-initialized
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* - ERROR: Wrong GPIO Port
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*/
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ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx)
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{
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ErrorStatus status = SUCCESS;
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
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/* Force and Release reset on clock of GPIOx Port */
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if (GPIOx == GPIOA)
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{
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LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOA);
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LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOA);
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}
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else if (GPIOx == GPIOB)
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{
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LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOB);
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LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOB);
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}
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else if (GPIOx == GPIOC)
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{
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LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOC);
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LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOC);
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}
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else if (GPIOx == GPIOD)
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{
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LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOD);
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LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOD);
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}
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#if defined(GPIOE)
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else if (GPIOx == GPIOE)
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{
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LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOE);
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LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOE);
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}
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#endif
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#if defined(GPIOF)
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else if (GPIOx == GPIOF)
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{
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LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOF);
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LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOF);
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}
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#endif
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#if defined(GPIOG)
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else if (GPIOx == GPIOG)
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{
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LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_GPIOG);
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LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_GPIOG);
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}
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#endif
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else
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{
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status = ERROR;
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}
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return (status);
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}
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/**
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* @brief Initialize GPIO registers according to the specified parameters in GPIO_InitStruct.
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* @param GPIOx GPIO Port
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* @param GPIO_InitStruct: pointer to a @ref LL_GPIO_InitTypeDef structure
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* that contains the configuration information for the specified GPIO peripheral.
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* @retval An ErrorStatus enumeration value:
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* - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content
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* - ERROR: Not applicable
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*/
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ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct)
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{
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uint32_t pinmask;
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uint32_t pinpos;
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uint32_t currentpin;
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
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assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin));
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/* ------------------------- Configure the port pins ---------------- */
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/* Initialize pinpos on first pin set */
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pinmask = ((GPIO_InitStruct->Pin) << GPIO_PIN_MASK_POS) >> GPIO_PIN_NB;
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pinpos = POSITION_VAL(pinmask);
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/* Configure the port pins */
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while ((pinmask >> pinpos) != 0u)
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{
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/* skip if bit is not set */
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if ((pinmask & (1u << pinpos)) != 0u)
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{
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/* Get current io position */
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if (pinpos < GPIO_PIN_MASK_POS)
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{
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currentpin = (0x00000101uL << pinpos);
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}
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else
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{
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currentpin = ((0x00010001u << (pinpos - GPIO_PIN_MASK_POS)) | 0x04000000u);
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}
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/* Check Pin Mode and Pin Pull parameters */
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assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode));
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assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull));
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/* Pull-up Pull-down resistor configuration*/
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LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull);
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/* Pin Mode configuration */
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LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode);
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if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE))
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{
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/* Check speed and Output mode parameters */
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assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed));
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assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType));
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/* Speed mode configuration */
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LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed);
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/* Output mode configuration*/
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LL_GPIO_SetPinOutputType(GPIOx, currentpin, GPIO_InitStruct->OutputType);
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}
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}
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pinpos++;
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}
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return (SUCCESS);
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}
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/**
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* @brief Set each @ref LL_GPIO_InitTypeDef field to default value.
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* @param GPIO_InitStruct: pointer to a @ref LL_GPIO_InitTypeDef structure
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* whose fields will be set to default values.
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* @retval None
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*/
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void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct)
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{
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/* Reset GPIO init structure parameters values */
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GPIO_InitStruct->Pin = LL_GPIO_PIN_ALL;
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GPIO_InitStruct->Mode = LL_GPIO_MODE_FLOATING;
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GPIO_InitStruct->Speed = LL_GPIO_SPEED_FREQ_LOW;
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GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
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GPIO_InitStruct->Pull = LL_GPIO_PULL_DOWN;
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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#endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) */
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/**
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* @}
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*/
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#endif /* USE_FULL_LL_DRIVER */
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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