Initial commit

2026-03-02 21:24:12 +08:00
commit 4c93905128
98 changed files with 54745 additions and 0 deletions
--- a/Src/uart.c
+++ b/Src/uart.c
@@ -0,0 +1,109 @@
+#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 uart_init(void) {
+    /* 使能 GPIOA 和 USART 时钟 */
+    rcu_periph_clock_enable(UART_GPIO_RCU);
+    rcu_periph_clock_enable(UART_RCU);
+
+    /* 配置 PA2 为 USART_TX，PA3 为 USART_RX */
+    gpio_af_set(UART_GPIO_PORT, GPIO_AF_1, UART_TX_PIN | UART_RX_PIN);
+
+    gpio_mode_set(UART_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, UART_TX_PIN | UART_RX_PIN);
+    gpio_output_options_set(UART_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, UART_TX_PIN | UART_RX_PIN);
+
+    /* 配置波特率、数据位、停止位等 */
+    usart_deinit(UART_PHY);
+    usart_word_length_set(UART_PHY, USART_WL_8BIT);
+    usart_stop_bit_set(UART_PHY, USART_STB_1BIT);
+    usart_parity_config(UART_PHY, USART_PM_NONE);
+    usart_baudrate_set(UART_PHY, UART_BAUDRATE);
+    usart_receive_config(UART_PHY, USART_RECEIVE_ENABLE);
+    usart_transmit_config(UART_PHY, USART_TRANSMIT_ENABLE);
+
+    usart_enable(UART_PHY);
+
+    nvic_irq_enable(UART_IRQ, 0);
+    usart_interrupt_enable(UART_PHY, USART_INT_RBNE);
+}
+
+void uart_rx_irq_pause(void) {
+    usart_interrupt_disable(UART_PHY, USART_INT_RBNE);
+}
+
+void uart_rx_irq_resume(void) {
+    usart_interrupt_enable(UART_PHY, USART_INT_RBNE);
+}
+
+/******************************************************************************/
+/* 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
+    }
+}
+
+/* 临时调试串口初始化 (PA9/PA10 USART0) */
+void debug_usart_init(void)
+{
+    /* 使能 GPIOA 和 USART0 时钟 */
+    rcu_periph_clock_enable(RCU_GPIOA);
+    rcu_periph_clock_enable(RCU_USART0);
+
+    /* 配置 PA9(TX) 和 PA10(RX) 复用功能 */
+    gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_9 | GPIO_PIN_10);
+
+    /* 配置 GPIO 模式 */
+    gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_9 | GPIO_PIN_10);
+    gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_9 | GPIO_PIN_10);
+
+    /* USART0 配置 */
+    usart_deinit(USART0);
+    usart_baudrate_set(USART0, 115200U);
+    usart_word_length_set(USART0, USART_WL_8BIT);
+    usart_stop_bit_set(USART0, USART_STB_1BIT);
+    usart_parity_config(USART0, USART_PM_NONE);
+    usart_hardware_flow_rts_config(USART0, USART_RTS_DISABLE);
+    usart_hardware_flow_cts_config(USART0, USART_CTS_DISABLE);
+    usart_receive_config(USART0, USART_RECEIVE_ENABLE);
+    usart_transmit_config(USART0, USART_TRANSMIT_ENABLE);
+
+    /* 打开接收中断，作为辅助命令输入口 */
+    usart_interrupt_enable(USART0, USART_INT_RBNE);
+
+    usart_enable(USART0);
+
+    /* NVIC 使能串口0中断，优先级可略低于主口 */
+    nvic_irq_enable(USART0_IRQn, 1);
+}