2025-02-26 09:59:15 +00:00
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### 测试
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串口中断发送通过测试
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spi_flash读写通过测试
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对智能模块通信串口，阻塞发送数据通过测试。
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### 问题
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2025-03-04 10:04:30 +00:00
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#### 串口中断
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2025-02-26 09:59:15 +00:00
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25/02/24
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在freerots环境下，中断不生效
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2025-03-04 10:04:30 +00:00
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解决
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2025-02-26 09:59:15 +00:00
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> 25/02/25
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>
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> 需要启动freerots任务
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>
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> 同时中断部分
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> ```c
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> void UART5_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
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> ```
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>
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> 变为
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>
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> ```c
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> void UART5_IRQHandler(void) __attribute__((interrupt()));
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> ```
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>
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> 其他中断同上，由硬件压栈变为软件压栈
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2025-03-04 10:04:30 +00:00
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#### 串口发送的数据不正确
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25/02/28
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解决
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将数据通过队列发送，需要将buff的位置移动到起始位置+结构体长度
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```c
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uint8_t *Buff = (uint8_t *)pvPortMalloc(200);
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if (Buff == NULL) {
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log_error("Memory allocation failed\n");
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return;
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}
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queueUartSendInfo *sendBuff = (queueUartSendInfo *)Buff;
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sendBuff->length = sizeof("hello world\n");
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sendBuff->data = Buff + sizeof(queueUartSendInfo);
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strlcpy((char *)sendBuff->data, "hello world\n", sizeof("hello world\n"));
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// for (int i = 0; i < sizeof("hello world\n"); i++) {
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// sendBuff->data[i] = data[i];
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// }
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// *sendBuff->data = *data;
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// *sendBuff->data = 'H';
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log_info("dataLen:%d\n", sendBuff->length);
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log_info("data:%s\n", sendBuff->data);
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xQueueSend(upward_uart_Queue, &Buff, 10);
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vTaskDelay(1000);
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```
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#### 中断中不能分配和释放内存
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解决
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中断中添加信号量，通知任务来释放。
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## 接收解析
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#### su806传来的数据
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见网关单片机通信协议
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#### 传感器传来的数据
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2025-03-05 08:27:39 +00:00
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## 串口接法流程
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串口中断接收数据，接收到的数据放入缓冲buff中；当前为总线空闲状态时，接收到数据后立即总线为繁忙状态，并关闭软件定时器
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串口发送数据前检查总线空闲状态和上次发送是否完成，总线空闲和上次发送完成，才能发送下次数据
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中断发送数据，每发送一次数据则进入中断塞入下次发送的数据，当数据最后一个字节塞入完成后，设置二值信号量
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二值信号量在任务中设置为队列集，有数据后设置发送完成，释放发送数据使用的buff
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串口进入空闲中断后，使能软件定时器，定时到达后，设置总线空闲
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## 串口接收传感器数据
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2025-03-04 10:04:30 +00:00
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