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549 lines
16 KiB
C
549 lines
16 KiB
C
/**
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******************************************************************************
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* @file HAL_gpio.c
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* @author IC Applications Department
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* @version V0.8
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* @date 2019_08_02
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* @brief This file provides all the GPIO firmware functions.
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******************************************************************************
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* @copy
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*
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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* TIME. AS A RESULT, HOLOCENE SHALL NOT BE HELD LIABLE FOR ANY
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* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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*
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* <h2><center>© COPYRIGHT 2016 HOLOCENE</center></h2>
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "HAL_gpio.h"
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#include "HAL_rcc.h"
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/** @addtogroup StdPeriph_Driver
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* @{
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*/
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/** @defgroup GPIO
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* @brief GPIO driver modules
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* @{
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*/
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/** @defgroup GPIO_Private_TypesDefinitions
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup GPIO_Private_Defines
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* @{
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*/
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/* ------------ RCC registers bit address in the alias region ----------------*/
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#define AFIO_OFFSET (AFIO_BASE - PERIPH_BASE)
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/* --- EVENTCR Register -----*/
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/* Alias word address of EVOE bit */
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#define EVCR_OFFSET (AFIO_OFFSET + 0x00)
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#define EVOE_BitNumber ((uint8_t)0x07)
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#define EVCR_EVOE_BB (PERIPH_BB_BASE + (EVCR_OFFSET * 32) + (EVOE_BitNumber * 4))
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#define EVCR_PORTPINCONFIG_MASK ((uint16_t)0xFF80)
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#define LSB_MASK ((uint16_t)0xFFFF)
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#define DBGAFR_POSITION_MASK ((uint32_t)0x000F0000)
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#define DBGAFR_SWJCFG_MASK ((uint32_t)0xF0FFFFFF)
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#define DBGAFR_LOCATION_MASK ((uint32_t)0x00200000)
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#define DBGAFR_NUMBITS_MASK ((uint32_t)0x00100000)
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/**
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* @}
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*/
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/** @defgroup GPIO_Private_Macros
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup GPIO_Private_Variables
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup GPIO_Private_FunctionPrototypes
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup GPIO_Private_Functions
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* @{
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*/
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/**
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* @brief Deinitializes the GPIOx peripheral registers to their default
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* reset values.
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* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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* @retval : None
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*/
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void GPIO_DeInit(GPIO_TypeDef* GPIOx)
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{
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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switch (*(uint32_t*)&GPIOx)
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{
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case GPIOA_BASE:
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, DISABLE);
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break;
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case GPIOB_BASE:
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, DISABLE);
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break;
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case GPIOC_BASE:
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, DISABLE);
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break;
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case GPIOD_BASE:
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD, ENABLE);
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD, DISABLE);
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break;
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default:
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break;
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}
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}
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/**
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* @brief Initializes the GPIOx peripheral according to the specified
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* parameters in the GPIO_InitStruct.
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* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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* @param GPIO_InitStruct: pointer to a GPIO_InitTypeDef structure that
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* contains the configuration information for the specified GPIO
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* peripheral.
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* @retval : None
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*/
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void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct)
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{
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uint32_t currentmode = 0x00, currentpin = 0x00, pinpos = 0x00, pos = 0x00;
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uint32_t tmpreg = 0x00, pinmask = 0x00;
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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assert_param(IS_GPIO_MODE(GPIO_InitStruct->GPIO_Mode));
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assert_param(IS_GPIO_PIN(GPIO_InitStruct->GPIO_Pin));
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/*---------------------------- GPIO Mode Configuration -----------------------*/
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currentmode = ((uint32_t)GPIO_InitStruct->GPIO_Mode) & ((uint32_t)0x0F);
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if ((((uint32_t)GPIO_InitStruct->GPIO_Mode) & ((uint32_t)0x10)) != 0x00)
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{
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/* Check the parameters */
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assert_param(IS_GPIO_SPEED(GPIO_InitStruct->GPIO_Speed));
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/* Output mode */
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currentmode |= (uint32_t)GPIO_InitStruct->GPIO_Speed;
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}
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/*---------------------------- GPIO CRL Configuration ------------------------*/
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/* Configure the eight low port pins */
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if (((uint32_t)GPIO_InitStruct->GPIO_Pin & ((uint32_t)0x00FF)) != 0x00)
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{
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tmpreg = GPIOx->CRL;
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for (pinpos = 0x00; pinpos < 0x08; pinpos++)
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{
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pos = ((uint32_t)0x01) << pinpos;
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/* Get the port pins position */
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currentpin = (GPIO_InitStruct->GPIO_Pin) & pos;
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if (currentpin == pos)
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{
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pos = pinpos << 2;
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/* Clear the corresponding low control register bits */
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pinmask = ((uint32_t)0x0F) << pos;
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tmpreg &= ~pinmask;
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/* Write the mode configuration in the corresponding bits */
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tmpreg |= (currentmode << pos);
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/* Reset the corresponding ODR bit */
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if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD)
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{
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GPIOx->BRR = (((uint32_t)0x01) << pinpos);
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}
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else
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{
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/* Set the corresponding ODR bit */
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if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU)
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{
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GPIOx->BSRR = (((uint32_t)0x01) << pinpos);
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}
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}
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}
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}
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GPIOx->CRL = tmpreg;
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}
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/*---------------------------- GPIO CRH Configuration ------------------------*/
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/* Configure the eight high port pins */
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if (GPIO_InitStruct->GPIO_Pin > 0x00FF)
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{
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tmpreg = GPIOx->CRH;
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for (pinpos = 0x00; pinpos < 0x08; pinpos++)
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{
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pos = (((uint32_t)0x01) << (pinpos + 0x08));
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/* Get the port pins position */
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currentpin = ((GPIO_InitStruct->GPIO_Pin) & pos);
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if (currentpin == pos)
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{
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pos = pinpos << 2;
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/* Clear the corresponding high control register bits */
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pinmask = ((uint32_t)0x0F) << pos;
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tmpreg &= ~pinmask;
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/* Write the mode configuration in the corresponding bits */
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tmpreg |= (currentmode << pos);
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/* Reset the corresponding ODR bit */
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if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD)
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{
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GPIOx->BRR = (((uint32_t)0x01) << (pinpos + 0x08));
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}
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/* Set the corresponding ODR bit */
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if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU)
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{
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GPIOx->BSRR = (((uint32_t)0x01) << (pinpos + 0x08));
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}
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}
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}
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GPIOx->CRH = tmpreg;
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}
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/*---------------------------- GPIOE_CRH_EXT Configuration ------------------------*/
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if(GPIO_InitStruct->GPIO_Pin>>16) //说明是GPIOE的16~23位
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{
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GPIO_InitStruct->GPIO_Pin = GPIO_InitStruct->GPIO_Pin>>16;
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tmpreg = GPIOE->CRH_EXT;
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for (pinpos = 0x00; pinpos < 0x08; pinpos++)
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{
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pos = ((uint32_t)0x01) << pinpos;
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/* Get the port pins position */
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currentpin = (GPIO_InitStruct->GPIO_Pin) & pos;
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if (currentpin == pos)
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{
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pos = pinpos << 2;
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/* Clear the corresponding low control register bits */
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pinmask = ((uint32_t)0x0F) << pos;
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tmpreg &= ~pinmask;
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/* Write the mode configuration in the corresponding bits */
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tmpreg |= (currentmode << pos);
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/* Reset the corresponding ODR bit */
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if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD)
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{
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GPIOx->BRR = (((uint32_t)0x01) << pinpos);
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}
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else
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{
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/* Set the corresponding ODR bit */
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if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU)
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{
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GPIOx->BSRR = (((uint32_t)0x01) << pinpos);
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}
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}
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}
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}
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GPIOE->CRH_EXT = tmpreg;
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}
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}
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/**
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* @brief Fills each GPIO_InitStruct member with its default value.
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* @param GPIO_InitStruct : pointer to a GPIO_InitTypeDef structure
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* which will be initialized.
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* @retval : None
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*/
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void GPIO_StructInit(GPIO_InitTypeDef* GPIO_InitStruct)
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{
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/* Reset GPIO init structure parameters values */
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GPIO_InitStruct->GPIO_Pin = GPIO_Pin_All;
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GPIO_InitStruct->GPIO_Speed = GPIO_Speed_2MHz;
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GPIO_InitStruct->GPIO_Mode = GPIO_Mode_IN_FLOATING;
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}
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/**
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* @brief Reads the specified input port pin.
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* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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* @param GPIO_Pin: specifies the port bit to read.
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* This parameter can be GPIO_Pin_x where x can be (0..15).
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* @retval : The input port pin value.
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*/
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uint8_t GPIO_ReadInputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
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{
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uint8_t bitstatus = 0x00;
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
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if ((GPIOx->IDR & GPIO_Pin) != (uint32_t)Bit_RESET)
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{
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bitstatus = (uint8_t)Bit_SET;
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}
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else
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{
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bitstatus = (uint8_t)Bit_RESET;
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}
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return bitstatus;
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}
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/**
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* @brief Reads the specified GPIO input data port.
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* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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* @retval : GPIO input data port value.
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*/
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uint16_t GPIO_ReadInputData(GPIO_TypeDef* GPIOx)
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{
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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return ((uint16_t)GPIOx->IDR);
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}
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/**
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* @brief Reads the specified output data port bit.
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* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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* @param GPIO_Pin: specifies the port bit to read.
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* This parameter can be GPIO_Pin_x where x can be (0..15).
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* @retval : The output port pin value.
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*/
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uint8_t GPIO_ReadOutputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
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{
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uint8_t bitstatus = 0x00;
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
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if ((GPIOx->ODR & GPIO_Pin) != (uint32_t)Bit_RESET)
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{
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bitstatus = (uint8_t)Bit_SET;
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}
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else
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{
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bitstatus = (uint8_t)Bit_RESET;
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}
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return bitstatus;
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}
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/**
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* @brief Reads the specified GPIO output data port.
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* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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* @retval : GPIO output data port value.
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*/
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uint16_t GPIO_ReadOutputData(GPIO_TypeDef* GPIOx)
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{
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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return ((uint16_t)GPIOx->ODR);
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}
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/**
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* @brief Sets the selected data port bits.
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* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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* @param GPIO_Pin: specifies the port bits to be written.
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* This parameter can be any combination of GPIO_Pin_x where
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* x can be (0..15).
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* @retval : None
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*/
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void GPIO_SetBits(GPIO_TypeDef* GPIOx, uint32_t GPIO_Pin)
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{
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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assert_param(IS_GPIO_PIN(GPIO_Pin));
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if(GPIO_Pin>GPIO_Pin_15)GPIOE->BSRR_EXT=GPIO_Pin>>16;
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else
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GPIOx->BSRR = GPIO_Pin;
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}
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/**
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* @brief Clears the selected data port bits.
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* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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* @param GPIO_Pin: specifies the port bits to be written.
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* This parameter can be any combination of GPIO_Pin_x where
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* x can be (0..15).
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* @retval : None
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*/
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void GPIO_ResetBits(GPIO_TypeDef* GPIOx, uint32_t GPIO_Pin)
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{
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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assert_param(IS_GPIO_PIN(GPIO_Pin));
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GPIOx->BRR = GPIO_Pin;
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}
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/**
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* @brief Sets or clears the selected data port bit.
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* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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* @param GPIO_Pin: specifies the port bit to be written.
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* This parameter can be one of GPIO_Pin_x where x can be (0..15).
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* @param BitVal: specifies the value to be written to the selected bit.
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* This parameter can be one of the BitAction enum values:
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* @arg Bit_RESET: to clear the port pin
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* @arg Bit_SET: to set the port pin
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* @retval : None
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*/
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void GPIO_WriteBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, BitAction BitVal)
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{
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
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assert_param(IS_GPIO_BIT_ACTION(BitVal));
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if (BitVal != Bit_RESET)
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{
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GPIOx->BSRR = GPIO_Pin;
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}
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else
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{
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GPIOx->BRR = GPIO_Pin;
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}
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}
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/**
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* @brief Writes data to the specified GPIO data port.
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* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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* @param PortVal: specifies the value to be written to the port output
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* data register.
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* @retval : None
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*/
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void GPIO_Write(GPIO_TypeDef* GPIOx, uint16_t PortVal)
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{
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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GPIOx->ODR = PortVal;
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}
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/**
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* @brief Locks GPIO Pins configuration registers.
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* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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* @param GPIO_Pin: specifies the port bit to be written.
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* This parameter can be any combination of GPIO_Pin_x where
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* x can be (0..15).
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* @retval : None
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*/
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void GPIO_PinLockConfig(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
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{
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uint32_t tmp = 0x00010000;
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/* Check the parameters */
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assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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assert_param(IS_GPIO_PIN(GPIO_Pin));
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tmp |= GPIO_Pin;
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/* Set LCKK bit */
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GPIOx->LCKR = tmp;
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/* Reset LCKK bit */
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GPIOx->LCKR = GPIO_Pin;
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/* Set LCKK bit */
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GPIOx->LCKR = tmp;
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/* Read LCKK bit*/
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tmp = GPIOx->LCKR;
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/* Read LCKK bit*/
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tmp = GPIOx->LCKR;
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}
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/**
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* @brief Writes data to the specified GPIO data port.
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* @param GPIOx: where x can be (A, B, C, D ) to select the GPIO peripheral.
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* @param GPIO_PinSource: specifies the pin for the Alternate function.
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* This parameter can be GPIO_PinSourcex where x can be (0..15) for GPIOA, GPIOB, GPIOD
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* and (0..12) for GPIOC .
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* @param GPIO_AF: selects the pin to used as Alternate function.
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* This parameter can be one of the following value:
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* @arg GPIO_AF_0: SPI1, MC0, TIM17_BKIN, SWDIO,SWCLK,
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UART1
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* @arg GPIO_AF_1: UART1, TIM3_CH1, TIM3_CH2, TIM3_CH3,
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TIM3_CH4, I2C1
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* @arg GPIO_AF_2: TIM2_CH1_ETR, TIM2_CH2, TIM2_CH3,
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TIM2_CH3, TIM2_CH4, TIM1_BKIN,
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TIM1_CH1N, TIM1_CH1, TIM1_CH2,
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TIM1_CH3, TIM1_CH4, TIM1_ETR,
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TIM1_CH2N, TIM1_CH3N, TIM2_CH2,
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TIM1 6_BKIN, TIM16_CH1N, TIM17_CH1N,
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TIM1 6_CH1, TIM17_CH1
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* @arg GPIO_AF_4: TIM14_CH1, I2C1
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* @note The pin should already been configured in Alternate Function mode(AF)
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* using GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AF
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* @note Refer to the Alternate function mapping table in the device datasheet
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* for the detailed mapping of the system and peripherals'alternate
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* function I/O pins.
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* @retval None
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*/
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void GPIO_PinAFConfig(GPIO_TypeDef* GPIOx, uint32_t GPIO_Pin, uint8_t GPIO_AF)
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{
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uint32_t temp;
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unsigned char i;
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/* Check the parameters */
|
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assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
|
||
assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource));
|
||
assert_param(IS_GPIO_AF(GPIO_AF));
|
||
|
||
if(GPIO_Pin>>16) //说明是GPIOE的16~23位
|
||
{
|
||
temp = GPIO_Pin>>16;
|
||
for(i=0;i<8;i++)
|
||
{
|
||
if(temp&0x01)
|
||
{
|
||
GPIOE->AFRH_EXT &= ~((uint32_t)0xF << ((uint32_t)(i<<2))); //AF配置占半字节，要x4,即<<2
|
||
GPIOE->AFRH_EXT |= ((uint32_t)GPIO_AF << ((uint32_t)(i<<2)));
|
||
}
|
||
temp = temp>>1;
|
||
}
|
||
}
|
||
if(GPIO_Pin&0XFF00) //说明是GPIOE的8~15位
|
||
{
|
||
temp = GPIO_Pin>>8;
|
||
for(i=0;i<8;i++)
|
||
{
|
||
if(temp&0x01)
|
||
{
|
||
GPIOx->AFRH &= ~((uint32_t)0xF << ((uint32_t)(i<<2))); //AF配置占半字节，要x4,即<<2
|
||
GPIOx->AFRH |= ((uint32_t)GPIO_AF << ((uint32_t)(i<<2)));
|
||
}
|
||
temp = temp>>1;
|
||
}
|
||
}
|
||
if(GPIO_Pin&0XFF) //说明是GPIOE的0~7位
|
||
{
|
||
for(i=0;i<8;i++)
|
||
{
|
||
if(temp&0x01)
|
||
{
|
||
GPIOx->AFRL &= ~((uint32_t)0xF << ((uint32_t)(i<<2))); //AF配置占半字节，要x4,即<<2
|
||
GPIOx->AFRL |= ((uint32_t)GPIO_AF << ((uint32_t)(i<<2)));
|
||
}
|
||
temp = temp>>1;
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @}
|
||
*/
|
||
|
||
/**
|
||
* @}
|
||
*/
|
||
|
||
/**
|
||
* @}
|
||
*/
|
||
|
||
/*-------------------------(C) COPYRIGHT 2016 HOLOCENE ----------------------*/
|