56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
#include "stm32f10x_it.h"
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#include "K210_USART.h" // 包含头文件以使用宏
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// 引用 main.c/K210_USART.c 中定义的全局变量
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extern volatile char g_k210_rx_buffer[];
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extern volatile uint16_t g_k210_rx_counter;
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extern volatile uint8_t g_k210_rx_flag;
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// 引用 Delay.c 中定义的全局时间变量
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extern volatile uint32_t g_time_ms;
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/**
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* @brief SysTick中断处理函数（1ms中断一次）
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* @note 用于维护系统时间戳和延时功能
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*/
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void SysTick_Handler(void)
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{
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g_time_ms++; // 每1ms递增一次
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}
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//... HardFault_Handler 等其他中断保持不变 ...
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// USART3中断（来自K210，根据连接图.md: K210使用USART3 PB10/PB11）
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void USART3_IRQHandler(void)
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{
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if (USART_GetITStatus(USART3, USART_IT_RXNE) == SET)
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{
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uint8_t received_char = USART_ReceiveData(USART3);
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// 收到换行符，认为一帧结束
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if (received_char == '\n')
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{
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if (g_k210_rx_counter > 0)
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{
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g_k210_rx_buffer[g_k210_rx_counter] = '\0';
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g_k210_rx_flag = 1; // 设置标志
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// 注意：此处不再重置 g_k210_rx_counter，由 K210_GetRxFlag() 负责
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}
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}
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// 忽略回车符
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else if (received_char != '\r')
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{
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if (g_k210_rx_counter < K210_RX_BUFFER_SIZE - 1)
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{
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g_k210_rx_buffer[g_k210_rx_counter++] = received_char;
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}
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else // 缓冲区满，强制结束
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{
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g_k210_rx_buffer[K210_RX_BUFFER_SIZE - 1] = '\0';
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g_k210_rx_flag = 1;
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}
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}
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USART_ClearITPendingBit(USART3, USART_IT_RXNE);
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}
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}
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