运行过程中突然死机，无法继续运行

发布于 2022-06-08 12:55:14 浏览：594 订阅该版

使用ulog运行过程中死机，打印提示如下：
```
psr: 0x40000000
r00: 0x0003e494
r01: 0x00000000
r02: 0x00000000
r03: 0x00000000
r04: 0x2001f878
r05: 0x20012b18
r06: 0x2000d604
r07: 0x00000000
r08: 0x00000000
r09: 0x0000003e
r10: 0x00000000
r11: 0x0000003e
r12: 0x0000002d
 lr: 0x00004c8f
 pc: 0x00000000
hard fault on thread: ulog_async

thread          pri  status      sp     stack size max used left tick  error
--------------- ---  ------- ---------- ----------  ------  ---------- ---
ulog_async       30  running 0x0000035c 0x00000800    66%   0x00000008 000
trans task        6  suspend 0x000004a0 0x00001800    47%   0x00000002 000
events task       7  suspend 0x0000008c 0x00001800    24%   0x00000004 000
measure task      8  suspend 0x0000008c 0x00001800    42%   0x00000005 000
rs485 task        6  suspend 0x00000f00 0x00003000    41%   0x0000000a 000
hplc task         6  suspend 0x0000009c 0x00003000    41%   0x0000000a 000
tshell           20  suspend 0x00000124 0x00001000    38%   0x00000004 000
syswatch          0  suspend 0x00000078 0x00000200    91%   0x0000000f 000
tidle0           31  ready   0x00000054 0x00000100    39%   0x00000002 000
timer             4  suspend 0x00000068 0x00000200    20%   0x00000009 000
main             10  suspend 0x00000080 0x00000800    55%   0x00000005 000
usage fault:
SCB_CFSR_UFSR:0x02 INVSTATE 
```