hulk/gd32e230_bootloader
1
0
Fork 0
generated from hulk/gd32e23x_template_cmake_vscode
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Initial commit

Browse Source
This commit is contained in:
hulk
2025-09-27 11:10:53 +08:00
commit 422c27846f
97 changed files with 53898 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

107
Src/uart.c Normal file
View File

@@ -0,0 +1,107 @@
#include "uart.h"
#include "gd32e23x_usart.h"
#include "gd32e23x_rcu.h"
#include "gd32e23x_gpio.h"
#include "board_config.h"
#include "uart_ring_buffer.h"
void rs485_init(void) {
#ifndef RS485_MAX13487
/* 使能 GPIOA 和 USART0 时钟 */
rcu_periph_clock_enable(RS485_GPIO_RCU);
rcu_periph_clock_enable(RS485_RCU);
/* 配置 PA2 为 USART0_TX，PA3 为 USART0_RX */
gpio_af_set(RS485_GPIO_PORT, GPIO_AF_1, RS485_TX_PIN | RS485_RX_PIN | RS485_EN_PIN);
gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, RS485_TX_PIN | RS485_RX_PIN);
gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, RS485_TX_PIN | RS485_RX_PIN);
gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, RS485_EN_PIN);
gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, RS485_EN_PIN);
/* 配置波特率、数据位、停止位等 */
usart_deinit(RS485_PHY);
usart_word_length_set(RS485_PHY, USART_WL_8BIT);
usart_stop_bit_set(RS485_PHY, USART_STB_1BIT);
usart_parity_config(RS485_PHY, USART_PM_NONE);
usart_baudrate_set(RS485_PHY, RS485_BAUDRATE);
usart_receive_config(RS485_PHY, USART_RECEIVE_ENABLE);
usart_transmit_config(RS485_PHY, USART_TRANSMIT_ENABLE);
usart_driver_assertime_config(RS485_PHY, 0x01);
usart_driver_deassertime_config(RS485_PHY, 0x10);
usart_rs485_driver_enable(RS485_PHY);
usart_enable(RS485_PHY);
nvic_irq_enable(RS485_IRQ, 0);
usart_interrupt_enable(RS485_PHY, USART_INT_RBNE);
// usart_interrupt_enable(RS485_PHY, USART_INT_IDLE);
#else
rcu_periph_clock_enable(RS485_GPIO_RCU);
rcu_periph_clock_enable(RS485_RCU);
gpio_af_set(RS485_GPIO_PORT, GPIO_AF_1, GPIO_PIN_2 | GPIO_PIN_3);
/* configure USART Tx&Rx as alternate function push-pull */
gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, RS485_TX_PIN | RS485_RX_PIN);
gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_10MHZ, RS485_TX_PIN | RS485_RX_PIN);
/* configure RS485 EN Pin */
gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, RS485_EN_PIN);
gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, RS485_EN_PIN);
gpio_bit_write(RS485_GPIO_PORT, RS485_EN_PIN, SET);
/* USART configure */
usart_deinit(RS485_PHY);
usart_baudrate_set(RS485_PHY, RS485_BAUDRATE);
usart_receive_config(RS485_PHY, USART_RECEIVE_ENABLE);
usart_transmit_config(RS485_PHY, USART_TRANSMIT_ENABLE);
usart_enable(RS485_PHY);
nvic_irq_enable(USART0_IRQn, 0);
usart_interrupt_enable(RS485_PHY, USART_INT_RBNE);
usart_interrupt_enable(RS485_PHY, USART_INT_IDLE);
#endif // RS485_MAX13487
}
/******************************************************************************/
/* 具体的中断处理函数实现 */
/******************************************************************************/
void usart0_irq_handler(void) {
// 处理USART0的接收中断
if(usart_interrupt_flag_get(USART0, USART_INT_FLAG_RBNE)) {
uint8_t data = usart_data_receive(USART0);
// 使用原有的环形缓冲区处理逻辑
(void)uart_ring_buffer_put(data); // 缓冲满时丢弃，返回值可用于统计
}
// 处理USART0的空闲中断
if(usart_interrupt_flag_get(USART0, USART_INT_FLAG_IDLE)) {
usart_interrupt_flag_clear(USART0, USART_INT_FLAG_IDLE);
// 在这里添加空闲中断处理逻辑
}
}
void usart1_irq_handler(void) {
// 处理USART1的接收中断
if(usart_interrupt_flag_get(USART1, USART_INT_FLAG_RBNE)) {
uint8_t data = usart_data_receive(USART1);
// 使用原有的环形缓冲区处理逻辑
(void)uart_ring_buffer_put(data); // 缓冲满时丢弃，返回值可用于统计
}
// 处理USART1的空闲中断
if(usart_interrupt_flag_get(USART1, USART_INT_FLAG_IDLE)) {
usart_interrupt_flag_clear(USART1, USART_INT_FLAG_IDLE);
// 在这里添加空闲中断处理逻辑
}
}