10 rt-thread 切换问题

发布于 2020-12-16 17:15:42 浏览：1112 订阅该版

下面是任务调度的log：
```
start scheduler: max priority 0x20
startup a thread:tidle0 with priority:31
thread resume:  tidle0
insert thread[tidle0], the priority: 31
startup a thread:led with priority:1
thread resume:  led
insert thread[led], the priority: 1
remove thread[led], the priority: 1
log: rt_led_running
thread suspend:  led
remove thread[led], the priority: 1
remove thread[tidle0], the priority: 31
[0]switch to priority#31 thread:tidle0(sp:0x20008020), from thread:led(sp: 0x20008220)
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
log: rt_idle_running
insert thread[led], the priority: 1
insert thread[tidle0], the priority: 31
remove thread[led], the priority: 1
[1]switch to priority#1 thread:led(sp:0x200081d8), from thread:tidle0(sp: 0x20008020)
switch in interrupt
```
到了 swich in interrupt 后出错，程序跳入到数据异常中断中去。 任务在第一次从led 切换到空闲任务的时候没有问题，到是任务从空闲切换到led的时候程序跳入数据异常中断错误中去，看log 任务切换的时候两个任务的sp没有问题感觉内存上应该没有问题，任务在switch in interrupt切换的时候死机，原因大概是在哪一块的