小熊派stm32l431, msh一开始不能接收，最后又可以了

发布于 2022-02-07 02:12:46 浏览：946 订阅该版

[tocm]

继上次问题
[https://club.rt-thread.org/ask/question/434280.html](小熊派stm32l431, msh无法接收输入，可能的原因有哪些)

```
main Starting...
NB模组初始化完成
thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
tcp_test  20  init    0x00000044 0x00000400    06%   0x00000005 000
+NPING    20  init    0x00000044 0x00000400    06%   0x00000005 000
tshell    21  ready   0x00000064 0x00000400    14%   0x00000009 -02
tidle     31  ready   0x00000058 0x00000100    34%   0x00000009 000
timer      4  suspend 0x00000060 0x00000200    44%   0x00000003 000
main      10  ready   0x000000c0 0x00000400    41%   0x00000008 000
semaphor v   suspend thread
-------- --- --------------
at_rx2#  000 0
at_rx#   000 0
at_q2#   001 0
at_q#    001 0
shrx     000 0
heap     001 0
MCU-->>NB: AT+NUESTATS=CELL

success
buffer: NUESTATS:CELL,3686,71,1,-684,-108,-576,170
success
buffer: OK
buffer's content:
uestats's value:86,71,1,-684,-108,-576,170
3686,71,1,-684,-108,-576,170
thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
tcp_test  20  ready   0x00000044 0x00000400    06%   0x00000005 000
+NPING    20  init    0x00000044 0x00000400    06%   0x00000005 000
tshell    21  ready   0x00000064 0x00000400    14%   0x00000009 -02
tidle     31  ready   0x00000048 0x00000100    34%   0x0000001a 000
timer      4  suspend 0x00000060 0x00000200    44%   0x00000005 000
main      10  ready   0x00000140 0x00000400    41%   0x0000000c 000
semaphor v   suspend thread
-------- --- --------------
at_rx2#  001 0
at_rx#   052 0
at_q2#   001 0
at_q#    001 0
shrx     000 0
heap     001 0
MCU-->>NB: AT+NSOCR=STREAM,6,0,1

thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
tcp_test  20  suspend 0x000000b4 0x00000400    19%   0x00000002 000
+NPING    20  init    0x00000044 0x00000400    06%   0x00000005 000
tshell    21  ready   0x00000064 0x00000400    14%   0x00000009 -02
tidle     31  ready   0x00000048 0x00000100    34%   0x00000002 000
timer      4  suspend 0x00000060 0x00000200    44%   0x00000005 000
main      10  ready   0x00000070 0x00000400    41%   0x00000008 000
semaphor v   suspend thread
-------- --- --------------
at_rx2#  000 1:tcp_test
at_rx#   063 0
at_q2#   000 0
at_q#    001 0
shrx     000 0
heap     001 0
success
buffer: 2
success
buffer: OK
MCU-->>NB: AT+NSOCO=2,1.15.126.242,9527

success
buffer: OK
sock_1:2
MCU-->>NB: AT+NSOSD=2,5,48656C6C6F

success
buffer: 2,5
success
buffer: OK
success
buffer: +NSONMI:2,5
socket_in_mb:2, length_in_mb:5
MCU-->>NB: AT+NSORF=2,512

success
buffer: 2,1.15.126.242,9527,5,48454C4C4F,0
success
buffer: OK
msg:HELLO
ps
thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
+NPING    20  init    0x00000044 0x00000400    06%   0x00000005 000
tshell    21  ready   0x00000064 0x00000400    46%   0x00000008 000
tidle     31  ready   0x00000048 0x00000100    34%   0x00000019 000
timer      4  suspend 0x00000060 0x00000200    44%   0x00000005 000
main      10  suspend 0x00000070 0x00000400    41%   0x00000009 000
msh >
```

这次发现，在我的单片机驱动bc35的时候(占用lpuart1)，这个时候获取tshell(占用usart2)状态，是错误号-2。在我单片机闲置时，tshell的错误号为0，并且可以输入了！上面就是输入了ps打印了线程信息，真神奇！