427 lines
14 KiB
C
427 lines
14 KiB
C
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/*
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******************************************************************************
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* @file driver_gpio.c
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* @author FreqChip Firmware Team
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* @version V1.0.0
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* @date 2021
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* @brief GPIO module driver.
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* This file provides firmware functions to manage the
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* General Purpose Input/Output (GPIO) peripheral
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2021 FreqChip.
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* All rights reserved.
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******************************************************************************
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*/
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#include "fr30xx.h"
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/************************************************************************************
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* @fn gpio_init
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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_Init
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*
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* @param fe_GPIO: to select the GPIO peripheral.
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* GPIO_Init: pointer to a GPIO_InitTypeDef structure that contains the
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* configuration information for the specified GPIO peripheral.
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*/
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__RAM_CODE void gpio_init(GPIO_TypeDef *GPIOx, GPIO_InitTypeDef *GPIO_Init)
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{
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uint32_t lu32_Position = 0;
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uint32_t lu32_Current_Pin;
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volatile uint32_t *GPIO_Pull_EN;
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volatile uint32_t *GPIO_Pull_Select;
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volatile uint32_t *GPIO_FuncMuxL;
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volatile uint32_t *GPIO_FuncMuxH;
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/* Select the group register */
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if (GPIOx == GPIOA)
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{
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GPIO_Pull_EN = &(SYSTEM->PortA_PullEN);
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GPIO_Pull_Select = &(SYSTEM->PortA_PullSelect);
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GPIO_FuncMuxL = &(SYSTEM->PortA_L_FuncMux);
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GPIO_FuncMuxH = &(SYSTEM->PortA_H_FuncMux);
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}
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else if (GPIOx == GPIOB)
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{
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GPIO_Pull_EN = &(SYSTEM->PortB_PullEN);
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GPIO_Pull_Select = &(SYSTEM->PortB_PullSelect);
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GPIO_FuncMuxL = &(SYSTEM->PortB_L_FuncMux);
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GPIO_FuncMuxH = &(SYSTEM->PortB_H_FuncMux);
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}
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else if (GPIOx == GPIOC)
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{
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GPIO_Pull_EN = &(SYSTEM->PortC_PullEN);
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GPIO_Pull_Select = &(SYSTEM->PortC_PullSelect);
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GPIO_FuncMuxL = &(SYSTEM->PortC_L_FuncMux);
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GPIO_FuncMuxH = &(SYSTEM->PortC_H_FuncMux);
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}
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else if (GPIOx == GPIOD)
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{
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GPIO_Pull_EN = &(SYSTEM->PortD_PullEN);
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GPIO_Pull_Select = &(SYSTEM->PortD_PullSelect);
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GPIO_FuncMuxL = &(SYSTEM->PortD_L_FuncMux);
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GPIO_FuncMuxH = &(SYSTEM->PortD_H_FuncMux);
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}
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/* Configure Select pins */
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while ((GPIO_Init->Pin) >> lu32_Position != 0)
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{
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/* Get current pin position */
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lu32_Current_Pin = (GPIO_Init->Pin) & (1uL << lu32_Position);
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if (lu32_Current_Pin)
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{
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switch (GPIO_Init->Mode)
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{
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case GPIO_MODE_INPUT:
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{
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GPIOx->GPIO_OutputEN |= lu32_Current_Pin;
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GPIOx->EXTI_EN &= ~lu32_Current_Pin;
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GPIOx->EXTI_INT_EN &= ~lu32_Current_Pin;
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}break;
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case GPIO_MODE_INPUT_HRS:
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{
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GPIOx->GPIO_OutputEN |= lu32_Current_Pin;
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GPIOx->EXTI_EN &= ~lu32_Current_Pin;
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GPIOx->EXTI_INT_EN &= ~lu32_Current_Pin;
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/* High Resistance Mode does not pull up or down */
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GPIO_Init->Pull = GPIO_NOPULL;
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}break;
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case GPIO_MODE_OUTPUT_PP:
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{
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GPIOx->GPIO_OutputEN &= ~lu32_Current_Pin;
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GPIOx->EXTI_EN &= ~lu32_Current_Pin;
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GPIOx->EXTI_INT_EN &= ~lu32_Current_Pin;
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}break;
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case GPIO_MODE_AF_PP:
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{
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/* Port 0 ~ 7 */
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if (lu32_Position < 8)
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{
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*GPIO_FuncMuxL = (*GPIO_FuncMuxL & ~(0xF << (lu32_Position * 4))) | (GPIO_Init->Alternate << (lu32_Position * 4));
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}
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/* Port 8 ~ 15 */
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else
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{
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*GPIO_FuncMuxH = (*GPIO_FuncMuxH & ~(0xF << ((lu32_Position - 8) * 4))) | (GPIO_Init->Alternate << ((lu32_Position - 8) * 4));
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}
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}break;
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case GPIO_MODE_EXTI_IT_RISING:
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case GPIO_MODE_EXTI_IT_FALLING:
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case GPIO_MODE_EXTI_IT_HIGH_LEVEL:
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case GPIO_MODE_EXTI_IT_LOW_LEVEL:
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{
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GPIOx->EXTI_TYPE = (GPIOx->EXTI_TYPE & ~(0x3 << (lu32_Position * 2))) | ((GPIO_Init->Mode & 0x3) << (lu32_Position * 2));
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GPIOx->GPIO_OutputEN |= lu32_Current_Pin;
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GPIOx->EXTI_EN |= lu32_Current_Pin;
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GPIOx->EXTI_INT_EN &= ~lu32_Current_Pin;
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}break;
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default: break;
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}
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/* GPIO Function */
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if (GPIO_Init->Mode & GPIO_MODE_IO_MASK)
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{
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/* Port 0 ~ 7 */
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if (lu32_Position < 8)
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{
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*GPIO_FuncMuxL = *GPIO_FuncMuxL & ~(0xF << (lu32_Position * 4));
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}
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/* Port 8 ~ 15 */
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else
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{
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*GPIO_FuncMuxH = *GPIO_FuncMuxH & ~(0xF << ((lu32_Position - 8) * 4));
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}
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}
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/* Set Pull UP/DOWN or NO Pull */
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if (GPIO_Init->Pull == GPIO_NOPULL)
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{
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*GPIO_Pull_EN &= ~lu32_Current_Pin;
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}
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else if (GPIO_Init->Pull == GPIO_PULLUP)
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{
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*GPIO_Pull_EN |= lu32_Current_Pin;
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*GPIO_Pull_Select |= lu32_Current_Pin;
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}
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else if (GPIO_Init->Pull == GPIO_PULLDOWN)
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{
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*GPIO_Pull_EN |= lu32_Current_Pin;
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*GPIO_Pull_Select &= ~lu32_Current_Pin;
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}
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}
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lu32_Position++;
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}
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}
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/************************************************************************************
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* @fn gpio_set_portpull
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*
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* @brief set port pull
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*
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* @param GPIOx: where x can be (GPIOA ~ GPIOB) to select the GPIO peripheral.
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* @param fu16_Pin: to select the Pin (1bit ~ 1Pin). @ref GPIO_pins
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* @param fe_Pull: pull up/pull down/no pull @ref enum_Pull_t
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* @return pin status.
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*/
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void gpio_set_portpull(GPIO_TypeDef *GPIOx, uint16_t fu16_Pin, enum_Pull_t fe_Pull)
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{
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uint32_t lu32_Position = 0;
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uint32_t lu32_Current_Pin;
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volatile uint32_t *GPIO_Pull_EN;
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volatile uint32_t *GPIO_Pull_Select;
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/* Select the group register */
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if (GPIOx == GPIOA)
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{
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GPIO_Pull_EN = &(SYSTEM->PortA_PullEN);
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GPIO_Pull_Select = &(SYSTEM->PortA_PullSelect);
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}
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else if (GPIOx == GPIOB)
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{
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GPIO_Pull_EN = &(SYSTEM->PortB_PullEN);
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GPIO_Pull_Select = &(SYSTEM->PortB_PullSelect);
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}
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else if (GPIOx == GPIOC)
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{
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GPIO_Pull_EN = &(SYSTEM->PortC_PullEN);
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GPIO_Pull_Select = &(SYSTEM->PortC_PullSelect);
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}
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else if (GPIOx == GPIOD)
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{
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GPIO_Pull_EN = &(SYSTEM->PortD_PullEN);
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GPIO_Pull_Select = &(SYSTEM->PortD_PullSelect);
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}
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/* Configure Select pins */
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while (fu16_Pin >> lu32_Position != 0)
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{
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/* Get current pin position */
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lu32_Current_Pin = fu16_Pin & (1uL << lu32_Position);
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if (lu32_Current_Pin)
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{
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/* Set Pull UP or DOWN or NO */
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if (fe_Pull == GPIO_NOPULL)
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{
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*GPIO_Pull_EN &= ~lu32_Current_Pin;
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}
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else if (fe_Pull == GPIO_PULLUP)
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{
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*GPIO_Pull_EN |= lu32_Current_Pin;
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*GPIO_Pull_Select |= lu32_Current_Pin;
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}
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else if (fe_Pull == GPIO_PULLDOWN)
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{
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*GPIO_Pull_EN |= lu32_Current_Pin;
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*GPIO_Pull_Select &= ~lu32_Current_Pin;
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}
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}
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lu32_Position++;
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}
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}
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/************************************************************************************
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* @fn gpio_write_group
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*
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* @brief write gpio status, The unit is group.
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*
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* @param GPIOx: where x can be (GPIOA ~ GPIOD) to select the GPIO peripheral.
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* @param fu16_GroupStatus: Group Status.(1bit ~ 1Pin)
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*/
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void gpio_write_group(GPIO_TypeDef *GPIOx, uint16_t fu16_GroupStatus)
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{
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GPIOx->GPIO_OUT_DATA = fu16_GroupStatus;
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}
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/************************************************************************************
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* @fn gpio_write_pin
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*
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* @brief write gpio status, The unit is pin.
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*
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* @param GPIOx: where x can be (GPIOA ~ GPIOD) to select the GPIO peripheral.
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* @param fu16_Pin: to select the Pin (1bit ~ 1Pin). @ref GPIO_pins
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* @param fe_PinStatus: pin Status. @ref enum_PinStatus_t
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*/
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void gpio_write_pin(GPIO_TypeDef *GPIOx, uint16_t fu16_Pin, enum_PinStatus_t fe_PinStatus)
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{
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if (fe_PinStatus)
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{
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GPIOx->GPIO_BIT_SET = fu16_Pin;
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}
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else
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{
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GPIOx->GPIO_BIT_CLEAR = fu16_Pin;
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}
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}
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/************************************************************************************
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* @fn gpio_read_group
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*
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* @brief read gpio status, The unit is group.
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*
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* @param GPIOx: where x can be (GPIOA ~ GPIOD) to select the GPIO peripheral.
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* @return group status.(1bit ~ 1Pin)
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*/
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uint16_t gpio_read_group(GPIO_TypeDef *GPIOx)
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{
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return GPIOx->GPIO_IN_DATA;
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}
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/************************************************************************************
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* @fn gpio_read_pin
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*
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* @brief read gpio status, The unit is pin.
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*
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* @param GPIOx: where x can be (GPIOA ~ GPIOD) to select the GPIO peripheral.
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* @param fu16_Pin: to select the Pin (1bit ~ 1Pin). @ref GPIO_pins
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* @return pin status.
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*/
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enum_PinStatus_t gpio_read_pin(GPIO_TypeDef *GPIOx, uint16_t fu16_Pin)
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{
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enum_PinStatus_t le_PinStatus;
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le_PinStatus = (GPIOx->GPIO_IN_DATA & fu16_Pin) ? GPIO_PIN_SET : GPIO_PIN_CLEAR;
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return le_PinStatus;
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}
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/************************************************************************************
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* @fn gpio_drive_current_config
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*
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* @brief gpio drive current config.
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*
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* @param GPIOx: where x can be (GPIOA ~ GPIOD) to select the GPIO peripheral.
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* @param fu16_Pin: to select the Pin (1bit ~ 1Pin). @ref GPIO_pins
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* @param fe_GPIO_Drive: Drive Current. @ref enum_GPIO_Drive_Current_t
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*/
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void gpio_drive_current_config(GPIO_TypeDef *GPIOx, uint16_t fu16_Pin, enum_GPIO_Drive_Current_t fe_GPIO_Drive)
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{
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uint32_t lu32_Position = 0;
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uint32_t lu32_Current_Pin;
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/* Configure Select pins */
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while (fu16_Pin >> lu32_Position != 0)
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{
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/* Get current pin position */
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lu32_Current_Pin = fu16_Pin & (1uL << lu32_Position);
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if (lu32_Current_Pin)
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{
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if (GPIOx == GPIOA)
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SYSTEM->PortA_DriveCfg = (SYSTEM->PortA_DriveCfg & ~(0x3 << (lu32_Position * 2))) | (fe_GPIO_Drive << (lu32_Position * 2));
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else if (GPIOx == GPIOB)
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SYSTEM->PortB_DriveCfg = (SYSTEM->PortB_DriveCfg & ~(0x3 << (lu32_Position * 2))) | (fe_GPIO_Drive << (lu32_Position * 2));
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else if (GPIOx == GPIOC)
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SYSTEM->PortC_DriveCfg = (SYSTEM->PortC_DriveCfg & ~(0x3 << (lu32_Position * 2))) | (fe_GPIO_Drive << (lu32_Position * 2));
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else if (GPIOx == GPIOD)
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SYSTEM->PortD_DriveCfg = (SYSTEM->PortD_DriveCfg & ~(0x3 << (lu32_Position * 2))) | (fe_GPIO_Drive << (lu32_Position * 2));
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}
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lu32_Position++;
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}
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}
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/************************************************************************************
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* @fn exti_interrupt_enable
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*
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* @brief exti line interrupt enable.
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*
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* @param GPIOx: where x can be (GPIOA ~ GPIOD) to select the GPIO peripheral.
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* @param fu16_EXTI_Line: to select the EXTI line.(1bit ~ 1Pin)
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*/
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void exti_interrupt_enable(GPIO_TypeDef *GPIOx, uint16_t fu16_EXTI_Line)
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{
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GPIOx->EXTI_INT_EN |= fu16_EXTI_Line;
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}
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/************************************************************************************
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* @fn exti_interrupt_disable
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*
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* @brief exti line interrupt disable.
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*
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* @param GPIOx: where x can be (GPIOA ~ GPIOD) to select the GPIO peripheral.
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* @param fu16_EXTI_Line: to select the EXTI line (1bit ~ 1Pin). @ref EXTI_line_index
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*/
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void exti_interrupt_disable(GPIO_TypeDef *GPIOx, uint16_t fu16_EXTI_Line)
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{
|
||
|
|
GPIOx->EXTI_INT_EN &= ~fu16_EXTI_Line;
|
||
|
|
}
|
||
|
|
|
||
|
|
/************************************************************************************
|
||
|
|
* @fn exti_get_LineStatus
|
||
|
|
*
|
||
|
|
* @brief get exti line interrupt status.
|
||
|
|
*
|
||
|
|
* @param GPIOx: where x can be (GPIOA ~ GPIOD) to select the GPIO peripheral.
|
||
|
|
* @param fu8_EXTI_Line: to select the EXTI line (1bit ~ 1Pin). @ref EXTI_line_index
|
||
|
|
* @return true: interrupt activate
|
||
|
|
* false: interrupt inactivate
|
||
|
|
*/
|
||
|
|
bool exti_get_LineStatus(GPIO_TypeDef *GPIOx, uint16_t fu16_EXTI_Line)
|
||
|
|
{
|
||
|
|
bool lb_EXTIStatus;
|
||
|
|
|
||
|
|
lb_EXTIStatus = (GPIOx->EXTI_INT_STATUS & fu16_EXTI_Line) ? true : false;
|
||
|
|
|
||
|
|
return lb_EXTIStatus;
|
||
|
|
}
|
||
|
|
|
||
|
|
/************************************************************************************
|
||
|
|
* @fn exti_clear_LineStatus
|
||
|
|
*
|
||
|
|
* @brief clear exti line interrupt status.
|
||
|
|
*
|
||
|
|
* @param GPIOx: where x can be (GPIOA ~ GPIOD) to select the GPIO peripheral.
|
||
|
|
* @param fu8_EXTI_Line: to select the EXTI line (1bit ~ 1Pin). @ref EXTI_line_index
|
||
|
|
*/
|
||
|
|
void exti_clear_LineStatus(GPIO_TypeDef *GPIOx, uint16_t fu16_EXTI_Line)
|
||
|
|
{
|
||
|
|
GPIOx->EXTI_INT_STATUS |= fu16_EXTI_Line;
|
||
|
|
}
|
||
|
|
|
||
|
|
/************************************************************************************
|
||
|
|
* @fn exti_set_FilterCNT
|
||
|
|
*
|
||
|
|
* @brief set exti line filer.
|
||
|
|
*
|
||
|
|
* @param GPIOx: where x can be (GPIOA ~ GPIOD) to select the GPIO peripheral.
|
||
|
|
* @param fu16_EXTI_Line: to select the EXTI line (1bit ~ 1Pin). @ref EXTI_line_index
|
||
|
|
* @param fu8_DIV: filter clock divider. (can be a 4-bit value)
|
||
|
|
* @param fu16_CNT: filter count. (can be a 12-bit value)
|
||
|
|
*/
|
||
|
|
void exti_set_Filter(GPIO_TypeDef *GPIOx, uint16_t fu16_EXTI_Line, uint8_t fu8_DIV, uint16_t fu16_CNT)
|
||
|
|
{
|
||
|
|
uint32_t lu32_Position = 0;
|
||
|
|
uint32_t lu32_Current_Pin;
|
||
|
|
|
||
|
|
/* Init write value */
|
||
|
|
uint32_t lu32_WriteValue = fu8_DIV << 12 | fu16_CNT;
|
||
|
|
|
||
|
|
/* Configure Select pins */
|
||
|
|
while (fu16_EXTI_Line >> lu32_Position != 0)
|
||
|
|
{
|
||
|
|
/* Get current pin position */
|
||
|
|
lu32_Current_Pin = fu16_EXTI_Line & (1uL << lu32_Position);
|
||
|
|
|
||
|
|
if (lu32_Current_Pin)
|
||
|
|
{
|
||
|
|
GPIOx->EXTI_CNT[lu32_Position] = lu32_WriteValue;
|
||
|
|
}
|
||
|
|
|
||
|
|
lu32_Position++;
|
||
|
|
}
|
||
|
|
}
|