二个线程运行一会后，卡死在TK1线程，无法进行调度了

发布于 2023-02-15 09:45:01 浏览：614 订阅该版

系统有main线程和tk1线程,前面二个线程能正常切换，能进入tidle线程，切换几次后，就一直停留在tk1线程。
仿真查看问题，调用rt_thread_mdelay()后，会进行任务切换，但切换反回的还是tk1线程。
看到任务错误码是，error = -2。

```c
//------------------------------------------
// tk1
//------------------------------------------
static rt_uint8_t stack1[256];
struct rt_thread thread1;
void tk1(void *parameter)
{
	csi_pin_set_mux(PA07, PA07_OUTPUT); // PA07 output
	while (1)
	{
		nop;
		nop;		
		rt_thread_mdelay(10);
		csi_pin_toggle(PA07); // PA07 toggle
		
	}
}

/***************************************************/
// main
/**************************************************/
int main(void)
{
	csi_pin_set_mux(PA06, PA06_OUTPUT); // PA06 output
	csi_pin_set_mux(PA08, PA08_OUTPUT); // PA06 output
	csi_tick_attach_callback(tick_callback); //中断回调

rt_err_t result;
	result = rt_thread_init(&thread1,
							"tk1",
							tk1,
							RT_NULL,
							stack1,
							sizeof(stack1),
							1,
							20);
	if (result == RT_EOK)
		rt_thread_startup(&thread1);
		
	
	while (1)
	{
		nop;
		nop;
		rt_thread_mdelay(12);
		csi_pin_toggle(PA06); // PA06 toggle
	}
}
```

3 个回答

小狼 2023-02-15

这家伙很懒，什么也没写！

lchnu 2023-02-15

Witness, Understand, Skill

PICP_6266 2023-02-15

这家伙很懒，什么也没写！

PICP_6266 2023-02-15

这家伙很懒，什么也没写！

lchnu 2023-02-15

Witness, Understand, Skill

PICP_6266 2023-02-15

这家伙很懒，什么也没写！

lchnu 2023-02-15

Witness, Understand, Skill

lchnu 2023-02-16

Witness, Understand, Skill

我在STM32L431RCT6上面新建了nano 3.1.3的工程，用你的代码，将toggle改成log输出进行了简单测试，没发现有问题。可能你要深入查一下自己工程的移植代码了。

```c
#include <rtthread.h>

#define DBG_TAG "main"
#define DBG_LVL DBG_LOG
#include <rtdbg.h>

#define LED_PIN    45

static rt_uint8_t stack1[256];
struct rt_thread thread1;
void tk1(void *parameter)
{
    while (1)
    {
        rt_thread_mdelay(500);
        LOG_D("Hello");
    }
}

int main(void)
{
    int count = 1;
    rt_err_t result;
    result = rt_thread_init(&thread1,
                            "tk1",
                            tk1,
                            RT_NULL,
                            stack1,
                            sizeof(stack1),
                            1,
                            20);
    if (result == RT_EOK)
        rt_thread_startup(&thread1);

while (count++)
    {
        LOG_D("RT-Thread!");
        rt_thread_mdelay(1000);
    }

return RT_EOK;
}
```

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230216/4ed18efd30a4036cbc938fcfa121847c.png.webp)

PICP_6266 2023-02-16

这家伙很懒，什么也没写！

PICP_6266 2023-02-17

这家伙很懒，什么也没写！

lchnu，下面我试着加shell找问题。正常的时候，我也没看出有问题，当出问题时shell也无法使用。

```c
 \ | /
- RT -     Thread Operating System
 / | \     3.1.5 build Feb 17 2023
 2006 - 2020 Copyright by rt-thread team
msh >help
RT-Thread shell commands:
list_timer       - list timer in system
list_mailbox     - list mail box in system
list_sem         - list semaphore in system
list_thread      - list thread
version          - show RT-Thread version information
ps               - List threads in the system.
help             - RT-Thread shell help.

msh >
msh >ps
thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
tk1        1  suspend 0x00000068 0x00000100    40%   0x00000014 000
tshell     6  ready   0x00000188 0x00000200    86%   0x00000009 000
tidle      7  ready   0x00000044 0x00000080    75%   0x00000015 000
main       2  suspend 0x0000007c 0x00000100    73%   0x00000014 000
msh >
msh >list_timer
timer     periodic   timeout       flag
-------- ---------- ---------- -----------
tk1      0x0000000d 0x000075e7 activated
tshell   0x00000000 0x00000000 deactivated
tidle    0x00000000 0x00000000 deactivated
main     0x0000000c 0x000075fa activated
current tick:0x000075f3
msh >
msh >list_mailbox
mailbox  entry size suspend thread
-------- ----  ---- --------------
msh >
msh >list_sem
semaphor v   suspend thread
-------- --- --------------
shrx     000 0
shell_rx 001 0
msh >
msh >list_thread
thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
tk1        1  suspend 0x00000068 0x00000100    40%   0x00000014 000
tshell     6  ready   0x00000184 0x00000200    100%   0x00000007 000
tidle      7  ready   0x00000044 0x00000080    75%   0x00000006 000
main       2  suspend 0x0000007c 0x00000100    73%   0x00000014 000
msh >
msh >version

\ | /
- RT -     Thread Operating System
 / | \     3.1.5 build Feb 17 2023
 2006 - 2020 Copyright by rt-thread team
msh >
msh >
```