567 lines
19 KiB
C
567 lines
19 KiB
C
/********************************** (C) COPYRIGHT *******************************
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* File Name : ch32v30x_gpio.c
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* Author : WCH
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* Version : V1.0.0
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* Date : 2021/06/06
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* Description : This file provides all the GPIO firmware functions.
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* SPDX-License-Identifier: Apache-2.0
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*******************************************************************************/
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#include "ch32v30x_gpio.h"
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#include "ch32v30x_rcc.h"
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/* MASK */
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#define ECR_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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* @fn GPIO_DeInit
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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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*
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* @param GPIOx - where x can be (A..G) to select the GPIO peripheral.
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*
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* @return none
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*/
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void GPIO_DeInit(GPIO_TypeDef *GPIOx)
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{
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if(GPIOx == GPIOA)
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{
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOA, ENABLE);
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOA, DISABLE);
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}
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else if(GPIOx == GPIOB)
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{
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOB, ENABLE);
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOB, DISABLE);
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}
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else if(GPIOx == GPIOC)
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{
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOC, ENABLE);
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOC, DISABLE);
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}
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else if(GPIOx == GPIOD)
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{
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOD, ENABLE);
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOD, DISABLE);
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}
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else if(GPIOx == GPIOE)
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{
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOE, ENABLE);
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOE, DISABLE);
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}
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}
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/*********************************************************************
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* @fn GPIO_AFIODeInit
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*
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* @brief Deinitializes the Alternate Functions (remap, event control
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* and EXTI configuration) registers to their default reset values.
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*
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* @return none
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*/
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void GPIO_AFIODeInit(void)
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{
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_AFIO, ENABLE);
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RCC_APB2PeriphResetCmd(RCC_APB2Periph_AFIO, DISABLE);
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}
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/*********************************************************************
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* @fn GPIO_Init
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*
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* @brief GPIOx - where x can be (A..G) to select the GPIO peripheral.
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*
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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 peripheral.
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*
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* @return 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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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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currentmode |= (uint32_t)GPIO_InitStruct->GPIO_Speed;
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}
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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->CFGLR;
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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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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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pinmask = ((uint32_t)0x0F) << pos;
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tmpreg &= ~pinmask;
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tmpreg |= (currentmode << pos);
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if(GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD)
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{
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GPIOx->BCR = (((uint32_t)0x01) << pinpos);
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}
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else
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{
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if(GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU)
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{
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GPIOx->BSHR = (((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->CFGLR = tmpreg;
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}
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if(GPIO_InitStruct->GPIO_Pin > 0x00FF)
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{
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tmpreg = GPIOx->CFGHR;
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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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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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pinmask = ((uint32_t)0x0F) << pos;
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tmpreg &= ~pinmask;
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tmpreg |= (currentmode << pos);
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if(GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD)
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{
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GPIOx->BCR = (((uint32_t)0x01) << (pinpos + 0x08));
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}
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if(GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU)
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{
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GPIOx->BSHR = (((uint32_t)0x01) << (pinpos + 0x08));
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}
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}
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}
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GPIOx->CFGHR = tmpreg;
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}
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}
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/*********************************************************************
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* @fn GPIO_StructInit
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*
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* @brief Fills each GPIO_InitStruct member with its default
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*
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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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*
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* @return none
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*/
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void GPIO_StructInit(GPIO_InitTypeDef *GPIO_InitStruct)
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{
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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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* @fn GPIO_ReadInputDataBit
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*
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* @brief GPIOx - where x can be (A..G) to select the GPIO peripheral.
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*
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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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*
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* @return 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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if((GPIOx->INDR & 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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* @fn GPIO_ReadInputData
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*
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* @brief Reads the specified GPIO input data port.
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*
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* @param GPIOx - where x can be (A..G) to select the GPIO peripheral.
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*
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* @return The output port pin value.
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*/
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uint16_t GPIO_ReadInputData(GPIO_TypeDef *GPIOx)
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{
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return ((uint16_t)GPIOx->INDR);
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}
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/*********************************************************************
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* @fn GPIO_ReadOutputDataBit
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*
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* @brief Reads the specified output data port bit.
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*
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* @param GPIOx - where x can be (A..G) to select the GPIO peripheral.
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* 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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*
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* @return none
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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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if((GPIOx->OUTDR & 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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* @fn GPIO_ReadOutputData
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*
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* @brief Reads the specified GPIO output data port.
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*
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* @param GPIOx - where x can be (A..G) to select the GPIO peripheral.
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*
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* @return GPIO output port pin value.
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*/
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uint16_t GPIO_ReadOutputData(GPIO_TypeDef *GPIOx)
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{
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return ((uint16_t)GPIOx->OUTDR);
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}
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/*********************************************************************
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* @fn GPIO_SetBits
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*
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* @brief Sets the selected data port bits.
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*
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* @param GPIOx - where x can be (A..G) to select the GPIO peripheral.
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* GPIO_Pin - specifies the port bits to be written.
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* This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
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*
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* @return none
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*/
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void GPIO_SetBits(GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin)
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{
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GPIOx->BSHR = GPIO_Pin;
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}
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/*********************************************************************
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* @fn GPIO_ResetBits
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*
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* @brief Clears the selected data port bits.
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*
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* @param GPIOx - where x can be (A..G) to select the GPIO peripheral.
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* GPIO_Pin - specifies the port bits to be written.
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* This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
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*
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* @return none
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*/
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void GPIO_ResetBits(GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin)
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{
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GPIOx->BCR = GPIO_Pin;
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}
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/*********************************************************************
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* @fn GPIO_WriteBit
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*
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* @brief Sets or clears the selected data port bit.
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*
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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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* BitVal - specifies the value to be written to the selected bit.
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* Bit_SetL - to clear the port pin.
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* Bit_SetH - to set the port pin.
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*
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* @return 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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if(BitVal != Bit_RESET)
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{
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GPIOx->BSHR = GPIO_Pin;
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}
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else
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{
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GPIOx->BCR = GPIO_Pin;
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}
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}
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/*********************************************************************
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* @fn GPIO_Write
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*
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* @brief Writes data to the specified GPIO data port.
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*
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* @param GPIOx - where x can be (A..G) to select the GPIO peripheral.
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* PortVal - specifies the value to be written to the port output data register.
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*
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* @return 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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GPIOx->OUTDR = PortVal;
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}
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/*********************************************************************
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* @fn GPIO_PinLockConfig
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*
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* @brief Locks GPIO Pins configuration registers.
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*
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* @param GPIOx - where x can be (A..G) to select the GPIO peripheral.
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* GPIO_Pin - specifies the port bit to be written.
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* This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
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*
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* @return 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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tmp |= GPIO_Pin;
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GPIOx->LCKR = tmp;
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GPIOx->LCKR = GPIO_Pin;
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GPIOx->LCKR = tmp;
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tmp = GPIOx->LCKR;
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tmp = GPIOx->LCKR;
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}
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/*********************************************************************
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* @fn GPIO_EventOutputConfig
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*
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* @brief Selects the GPIO pin used as Event output.
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*
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* @param GPIO_PortSource - selects the GPIO port to be used as source
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* for Event output.
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* This parameter can be GPIO_PortSourceGPIOx where x can be (A..E).
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* GPIO_PinSource - specifies the pin for the Event output.
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* This parameter can be GPIO_PinSourcex where x can be (0..15).
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*
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* @return none
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*/
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void GPIO_EventOutputConfig(uint8_t GPIO_PortSource, uint8_t GPIO_PinSource)
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{
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uint32_t tmpreg = 0x00;
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tmpreg = AFIO->ECR;
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tmpreg &= ECR_PORTPINCONFIG_MASK;
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tmpreg |= (uint32_t)GPIO_PortSource << 0x04;
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tmpreg |= GPIO_PinSource;
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AFIO->ECR = tmpreg;
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}
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/*********************************************************************
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* @fn GPIO_EventOutputCmd
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*
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* @brief Enables or disables the Event Output.
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*
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* @param NewState - ENABLE or DISABLE.
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*
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* @return none
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*/
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void GPIO_EventOutputCmd(FunctionalState NewState)
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{
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if(NewState)
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{
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AFIO->ECR |= (1 << 7);
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}
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else
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{
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AFIO->ECR &= ~(1 << 7);
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}
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}
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/*********************************************************************
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* @fn GPIO_PinRemapConfig
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*
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* @brief Changes the mapping of the specified pin.
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*
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* @param GPIO_Remap - selects the pin to remap.
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* GPIO_Remap_SPI1 - SPI1 Alternate Function mapping
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* GPIO_Remap_I2C1 - I2C1 Alternate Function mapping
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* GPIO_Remap_USART1 - USART1 Alternate Function mapping
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* GPIO_Remap_USART2 - USART2 Alternate Function mapping
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* GPIO_PartialRemap_USART3 - USART3 Partial Alternate Function mapping
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* GPIO_FullRemap_USART3 - USART3 Full Alternate Function mapping
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* GPIO_PartialRemap_TIM1 - TIM1 Partial Alternate Function mapping
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* GPIO_FullRemap_TIM1 - TIM1 Full Alternate Function mapping
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* GPIO_PartialRemap1_TIM2 - TIM2 Partial1 Alternate Function mapping
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* GPIO_PartialRemap2_TIM2 - TIM2 Partial2 Alternate Function mapping
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* GPIO_FullRemap_TIM2 - TIM2 Full Alternate Function mapping
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* GPIO_PartialRemap_TIM3 - TIM3 Partial Alternate Function mapping
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* GPIO_FullRemap_TIM3 - TIM3 Full Alternate Function mapping
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* GPIO_Remap_TIM4 - TIM4 Alternate Function mapping
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* GPIO_Remap1_CAN1 - CAN1 Alternate Function mapping
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* GPIO_Remap2_CAN1 - CAN1 Alternate Function mapping
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* GPIO_Remap_PD01 - PD01 Alternate Function mapping
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* GPIO_Remap_ADC1_ETRGINJ - ADC1 External Trigger Injected Conversion remapping
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* GPIO_Remap_ADC1_ETRGREG - ADC1 External Trigger Regular Conversion remapping
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* GPIO_Remap_ADC2_ETRGINJ - ADC2 External Trigger Injected Conversion remapping
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* GPIO_Remap_ADC2_ETRGREG - ADC2 External Trigger Regular Conversion remapping
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* GPIO_Remap_ETH - Ethernet remapping
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* GPIO_Remap_CAN2 - CAN2 remapping
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* GPIO_Remap_MII_RMII_SEL - MII or RMII selection
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* GPIO_Remap_SWJ_NoJTRST - Full SWJ Enabled (JTAG-DP + SW-DP) but without JTRST
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* GPIO_Remap_SWJ_JTAGDisable - JTAG-DP Disabled and SW-DP Enabled
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* GPIO_Remap_SWJ_Disable - Full SWJ Disabled (JTAG-DP + SW-DP)
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* GPIO_Remap_TIM2ITR1_PTP_SOF - Ethernet PTP output or USB OTG SOF (Start of Frame) connected
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* to TIM2 Internal Trigger 1 for calibration
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* GPIO_Remap_TIM2ITR1_PTP_SOF - Ethernet PTP output or USB OTG SOF (Start of Frame)
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* GPIO_Remap_TIM8 - TIM8 Alternate Function mapping
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* GPIO_PartialRemap_TIM9 - TIM9 Partial Alternate Function mapping
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* GPIO_FullRemap_TIM9 - TIM9 Full Alternate Function mapping
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* GPIO_PartialRemap_TIM10 - TIM10 Partial Alternate Function mapping
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* GPIO_FullRemap_TIM10 - TIM10 Full Alternate Function mapping
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* GPIO_Remap_FSMC_NADV - FSMC_NADV Alternate Function mapping
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* GPIO_PartialRemap_USART4 - USART4 Partial Alternate Function mapping
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* GPIO_FullRemap_USART4 - USART4 Full Alternate Function mapping
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* GPIO_PartialRemap_USART5 - USART5 Partial Alternate Function mapping
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* GPIO_FullRemap_USART5 - USART5 Full Alternate Function mapping
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* GPIO_PartialRemap_USART6 - USART6 Partial Alternate Function mapping
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* GPIO_FullRemap_USART6 - USART6 Full Alternate Function mapping
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* GPIO_PartialRemap_USART7 - USART7 Partial Alternate Function mapping
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* GPIO_FullRemap_USART7 - USART7 Full Alternate Function mapping
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* GPIO_PartialRemap_USART8 - USART8 Partial Alternate Function mapping
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* GPIO_FullRemap_USART8 - USART8 Full Alternate Function mapping
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* GPIO_Remap_USART1_HighBit - USART1 Alternate Function mapping high bit
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* NewState - ENABLE or DISABLE.
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*
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* @return none
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*/
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void GPIO_PinRemapConfig(uint32_t GPIO_Remap, FunctionalState NewState)
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{
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uint32_t tmp = 0x00, tmp1 = 0x00, tmpreg = 0x00, tmpmask = 0x00;
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if((GPIO_Remap & 0x80000000) == 0x80000000)
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{
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tmpreg = AFIO->PCFR2;
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}
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else
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{
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tmpreg = AFIO->PCFR1;
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}
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tmpmask = (GPIO_Remap & DBGAFR_POSITION_MASK) >> 0x10;
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tmp = GPIO_Remap & LSB_MASK;
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/* Clear bit */
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if((GPIO_Remap & 0x80000000) == 0x80000000)
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{ /* PCFR2 */
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if((GPIO_Remap & (DBGAFR_LOCATION_MASK | DBGAFR_NUMBITS_MASK)) == (DBGAFR_LOCATION_MASK | DBGAFR_NUMBITS_MASK)) /* [31:16] 2bit */
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{
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tmp1 = ((uint32_t)0x03) << (tmpmask + 0x10);
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tmpreg &= ~tmp1;
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}
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else if((GPIO_Remap & DBGAFR_NUMBITS_MASK) == DBGAFR_NUMBITS_MASK) /* [15:0] 2bit */
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{
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tmp1 = ((uint32_t)0x03) << tmpmask;
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tmpreg &= ~tmp1;
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}
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else /* [31:0] 1bit */
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{
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tmpreg &= ~(tmp << ((GPIO_Remap >> 0x15) * 0x10));
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|
}
|
|
}
|
|
else
|
|
{ /* PCFR1 */
|
|
if((GPIO_Remap & (DBGAFR_LOCATION_MASK | DBGAFR_NUMBITS_MASK)) == (DBGAFR_LOCATION_MASK | DBGAFR_NUMBITS_MASK)) /* [26:24] 3bit SWD_JTAG */
|
|
{
|
|
tmpreg &= DBGAFR_SWJCFG_MASK;
|
|
AFIO->PCFR1 &= DBGAFR_SWJCFG_MASK;
|
|
}
|
|
else if((GPIO_Remap & DBGAFR_NUMBITS_MASK) == DBGAFR_NUMBITS_MASK) /* [15:0] 2bit */
|
|
{
|
|
tmp1 = ((uint32_t)0x03) << tmpmask;
|
|
tmpreg &= ~tmp1;
|
|
tmpreg |= ~DBGAFR_SWJCFG_MASK;
|
|
}
|
|
else /* [31:0] 1bit */
|
|
{
|
|
tmpreg &= ~(tmp << ((GPIO_Remap >> 0x15) * 0x10));
|
|
tmpreg |= ~DBGAFR_SWJCFG_MASK;
|
|
}
|
|
}
|
|
|
|
/* Set bit */
|
|
if(NewState != DISABLE)
|
|
{
|
|
tmpreg |= (tmp << ((GPIO_Remap >> 0x15) * 0x10));
|
|
}
|
|
|
|
if((GPIO_Remap & 0x80000000) == 0x80000000)
|
|
{
|
|
AFIO->PCFR2 = tmpreg;
|
|
}
|
|
else
|
|
{
|
|
AFIO->PCFR1 = tmpreg;
|
|
}
|
|
}
|
|
|
|
/*********************************************************************
|
|
* @fn GPIO_EXTILineConfig
|
|
*
|
|
* @brief Selects the GPIO pin used as EXTI Line.
|
|
*
|
|
* @param GPIO_PortSource - selects the GPIO port to be used as source for EXTI lines.
|
|
* This parameter can be GPIO_PortSourceGPIOx where x can be (A..G).
|
|
* GPIO_PinSource - specifies the EXTI line to be configured.
|
|
* This parameter can be GPIO_PinSourcex where x can be (0..15).
|
|
*
|
|
* @return none
|
|
*/
|
|
void GPIO_EXTILineConfig(uint8_t GPIO_PortSource, uint8_t GPIO_PinSource)
|
|
{
|
|
uint32_t tmp = 0x00;
|
|
|
|
tmp = ((uint32_t)0x0F) << (0x04 * (GPIO_PinSource & (uint8_t)0x03));
|
|
AFIO->EXTICR[GPIO_PinSource >> 0x02] &= ~tmp;
|
|
AFIO->EXTICR[GPIO_PinSource >> 0x02] |= (((uint32_t)GPIO_PortSource) << (0x04 * (GPIO_PinSource & (uint8_t)0x03)));
|
|
}
|
|
|
|
/*********************************************************************
|
|
* @fn GPIO_ETH_MediaInterfaceConfig
|
|
*
|
|
* @brief Selects the Ethernet media interface.
|
|
*
|
|
* @param GPIO_ETH_MediaInterface - specifies the Media Interface mode.
|
|
* GPIO_ETH_MediaInterface_MII - MII mode
|
|
* GPIO_ETH_MediaInterface_RMII - RMII mode
|
|
*
|
|
* @return none
|
|
*/
|
|
void GPIO_ETH_MediaInterfaceConfig(uint32_t GPIO_ETH_MediaInterface)
|
|
{
|
|
if(GPIO_ETH_MediaInterface)
|
|
{
|
|
AFIO->PCFR1 |= (1 << 23);
|
|
}
|
|
else
|
|
{
|
|
AFIO->PCFR1 &= ~(1 << 23);
|
|
}
|
|
}
|