RT-Thread-RTT5.2.0串口接收中断死机的问题RT-Thread问答社区

5 RTT5.2.0串口接收中断死机的问题

发布于 2025-05-08 14:19:48 浏览：54 订阅该版

RTThread: 5.2.0
BSP: STM32F103RC
单片机: GD32F303RCT6

问题代码:
```C
int main(void)
{
    // TjcRuntime_reset(&tjc_runtime);
    while (1) {
        // rt_kprintf("running...\n");
        rt_thread_mdelay(1000);
    }
}

static void rx_call(char *buff, u32 size) {
    TjcRuntime_pushReceiveData(&tjc_runtime, buff, size);
}

void Ui_startup(void) {
    serial = rt_device_find("uart4");
    struct serial_configure conf = RT_SERIAL_CONFIG_DEFAULT;
    conf.baud_rate = 921600;
    rt_device_control(serial, RT_DEVICE_CTRL_CONFIG, &conf);
    rt_device_open(serial, RT_DEVICE_FLAG_DMA_TX | RT_DEVICE_FLAG_DMA_RX);
    // rt_device_open(serial, RT_DEVICE_OFLAG_RDWR);
    // rt_device_open(serial, RT_DEVICE_FLAG_DMA_TX | RT_DEVICE_FLAG_INT_RX);
    // rt_device_set_rx_indicate(serial, rx_call);
    // TjcRuntime_init(&tjc_runtime, serial);
}

INIT_COMPONENT_EXPORT(Ui_startup);
```

错误输出:
```Shell
[D/drv.usart] uart4 dma config start
[D/drv.usart] uart4 dma RX instance: 40020430
[D/drv.usart] uart4 dma config done
[D/drv.usart] uart4 dma config start
[D/drv.usart] uart4 dma TX instance: 40020458
[D/drv.usart] uart4 dma config done
[I/FAL] The FAL block device (fs) created successfully
[I/tjc_rt] register id=0
msh />thread   pri  status      sp     stack size max used left tick   error  tcb addr
-------- ---  ------- ---------- ----------  ------  ---------- ------- ----------
tshell    20  suspend 0x000000c8 0x00001000    08%   0x00000009 EINTRPT 0x20004b00
tidle0    31  running 0x00000058 0x00000100    67%   0x0000001d OK      0x20002110
main      10  suspend 0x000000d0 0x00000800    50%   0x0000000f EINTRPT 0x20002ba8

Firmware name: rtthread, hardware version: 1.0, software version: 1.0
Fault on interrupt or bare metal(no OS) environment
===== Thread stack information =====
  addr: 20000e78    data: deadbeef
  addr: 20000e7c    data: deadbeef
  addr: 20000e80    data: 00000000
  addr: 20000e84    data: 00000000
  addr: 20000e88    data: 00000000
  addr: 20000e8c    data: 00000000
  addr: 20000e90    data: 00000000
  addr: 20000e94    data: fffffffd
  addr: 20000e98    data: b9337822
  addr: 20000e9c    data: 01000044
  addr: 20000ea0    data: 20000ec0
  addr: 20000ea4    data: 10000000
  addr: 20000ea8    data: f0000000
  addr: 20000eac    data: 20002bbc
  addr: 20000eb0    data: 00000008
  addr: 20000eb4    data: 0801d687
  addr: 20000eb8    data: 080001f8
  addr: 20000ebc    data: 01000000
====================================
=================== Registers information ====================
  R0 : fffffff1  R1 : fffffff1  R2 : deadbeef  R3 : deadbeef
  R12: deadbeef  LR : 20002248  PC : deadbeef  PSR: deadbeef
==============================================================
Memory management fault is caused by instruction access violation
Show more call stack info by run: addr2line -e rtthread.elf -a -f deadbeef 0801d686 
Current system tick: 3861
```

`RT_DEVICE_FLAG_DMA_RX` 和 `RT_DEVICE_FLAG_INT_RX` 问题一样, 如果不使用中断就不会出现这个问题, 开始中断如果没有数据接收不会报错, 有数据就会报错, 而且并没有进入接收回调, 问题出现在很低级的位置

我重新把代码移植到4.1.1, 没有出现这个问题吗, 可以正常运行