hulk/gd32e230_bootloader
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Follow the reference to port the bootloader

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yelvlab
2025-09-28 01:14:06 +08:00
parent 422c27846f
commit bd541d585e
23 changed files with 712 additions and 1638 deletions
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92
Src/uart.c
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@@ -7,8 +7,6 @@
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);
@@ -36,72 +34,38 @@ void rs485_init(void) {
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);
nvic_irq_enable(RS485_IRQ, 0);
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
}
uint32_t rs485_send_byte(uint8_t data) {
// 等待发送缓冲区空
while (RESET == usart_flag_get(RS485_PHY, USART_FLAG_TBE));
// 发送数据
usart_data_transmit(RS485_PHY, data);
// 等待发送完成
while (RESET == usart_flag_get(RS485_PHY, USART_FLAG_TC));
return 0; // 成功
}
uint32_t rs485_send_str(uint8_t* str, uint16_t len) {
// 发送数据 - 最优化版本，避免索引变量
uint8_t* end = str + len;
while (str < end) {
// 等待发送缓冲区空
while (RESET == usart_flag_get(RS485_PHY, USART_FLAG_TBE));
usart_data_transmit(RS485_PHY, *str++);
}
// 等待最后一个字节发送完成（重要！）
while (RESET == usart_flag_get(RS485_PHY, USART_FLAG_TC));
return 0; // 成功
}