RTT+stm32 使用 freemodbus 的tcp模式报错

发布于 2022-12-21 09:17:15 浏览：863 订阅该版

- 使用了官方提供的freemodbus测试代码。
- 使用最新的rt-thread源码

请问下面的问题，怎么排查解决啊？
我尝试了修改官方例程，增大了栈的大小，但是依旧报错
```c
msh />mb_slave_samlpe TCP
[E/tcpserv] thread create failed
[E/tcpserv] tcp server start failed
[E/tcpserv] error!
psr: 0x41000000
r00: 0x00000000
r01: 0x08027879
r02: 0x0000382c
r03: 0xffffffff
r04: 0x000001f6
r05: 0x00000000
r06: 0xdeadbeef
r07: 0xdeadbeef
r08: 0xdeadbeef
r09: 0xdeadbeef
r10: 0xdeadbeef
r11: 0xdeadbeef
r12: 0x0801d039
 lr: 0x08028c7d
 pc: 0x08028c7c
hard fault on thread: md_s_pol

thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
md_s_pol  10  running 0x00000044 0x00000400    52%   0x0000000a OK
tshell    20  ready   0x000000dc 0x00001000    08%   0x00000008 OK
tcpip     10  suspend 0x000000c4 0x00000400    71%   0x00000011 OK
etx       12  suspend 0x00000090 0x00000400    36%   0x0000000e OK
erx       12  suspend 0x00000090 0x00000400    40%   0x00000005 OK
sys work  23  suspend 0x0000005c 0x00000800    21%   0x0000000a OK
tidle0    31  ready   0x00000044 0x00000100    39%   0x00000016 OK
main      10  suspend 0x00000080 0x00000800    31%   0x00000009 OK
bus fault:
SCB_CFSR_BFSR:0x04 IMPRECISERR

```