at client esp32 总是进hard fault？已解决，原理不明

发布于 2021-03-03 11:17:45 浏览：1071 订阅该版

cortex-m23 , gcc, AT CLIENT, ESP32，仿真运行， WIFI连接成功，然后进入 HARD FAULT,每次都是如此（直接加组件，没加应用代码）。

打印信息如下：
```
 \ | /
- RT -     Thread Operating System
 / | \     4.0.3 build Mar  3 2021
 2006 - 2020 Copyright by rt-thread team
[I/I2C] I2C bus [i2c0] registered
[I/I2C] I2C bus [i2c1] registered
[D/drv.pwm] pwm0 init success
[D/drv.pwm] pwm0 register success
[I/sal.skt] Socket Abstraction Layer initialize success.
[I/drv.Uart] [uart0] init ctrl cfg
[I/at.clnt] AT client(V1.3.1) on device uart0 initialize success.
[D/AT] recvline: 0000-0020: 0D 41 54 0D 0A                                                                                        .AT..
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 4F 4B 0D 0A                                                                                           OK..
[D/AT] sendline: 0000-0020: 41 54 2B 52 53 54                                                                                     AT+RST
[D/AT] recvline: 0000-0020: 41 54 2B 52 53 54 0D 0A                                                                               AT+RST..
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 4F 4B 0D 0A                                                                                           OK..
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 72 65 61 64 79 0D 0A                                                                                  ready..
[D/AT] sendline: 0000-0020: 41 54 45 30                                                                                           ATE0
[D/AT] recvline: 0000-0020: 41 54 45 30 0D 0A                                                                                     ATE0..
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 4F 4B 0D 0A                                                                                           OK..
[D/AT] sendline: 0000-0020: 41 54 2B 43 57 4D 4F 44  45 3D 31                                                                     AT+CWMODE=1
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 4F 4B 0D 0A                                                                                           OK..
[D/AT] sendline: 0000-0020: 41 54 2B 47 4D 52                                                                                     AT+GMR
[D/AT] recvline: 0000-0020: 41 54 20 76 65 72 73 69  6F 6E 3A 31 2E 31 2E 33  2E 30 28 35 61 34 30 35  37 36 20 2D 20 4E 6F 76    AT version:1.1.3.0(5a40576 - Nov
[D/AT] recvline: 0020-0040: 20 32 38 20 32 30 31 38  20 31 32 3A 35 30 3A 35  35 29 0D 0A                                          28 2018 12:50:55)..
[D/AT] recvline: 0000-0020: 53 44 4B 20 76 65 72 73  69 6F 6E 3A 76 33 2E 30  2E 37 0D 0A                                         SDK version:v3.0.7..
[D/AT] recvline: 0000-0020: 63 6F 6D 70 69 6C 65 20  74 69 6D 65 3A 44 65 63  20 32 31 20 32 30 31 38  20 30 39 3A 30 34 3A 35    compile time:Dec 21 2018 09:04:5
[D/AT] recvline: 0020-0040: 36 0D 0A                                                                                              6..
[D/AT] recvline: 0000-0020: 42 69 6E 20 76 65 72 73  69 6F 6E 3A 31 2E 31 2E  33 28 57 52 4F 4F 4D 2D  33 32 29 0D 0A             Bin version:1.1.3(WROOM-32)..
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 4F 4B 0D 0A                                                                                           OK..
[D/AT] recvline: 0000-0020: 57 49 46 49 20 43 4F 4E  4E 45 43 54 45 44 0D 0A                                                      WIFI CONNECTED..
[I/at.dev.esp32] esp32 device wifi is connected.
[D/AT] sendline: 0000-0020: 41 54 2B 43 49 50 4D 55  58 3D 31                                                                     AT+CIPMUX=1
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 4F 4B 0D 0A                                                                                           OK..
[D/AT] sendline: 0000-0020: 41 54 2B 43 57 4A 41 50  3D 22 34 30 32 2D 34 30  33 77 69 66 69 22 2C 22  31 31 32 32 33 33 34 34    AT+CWJAP="wifi","11223344
[D/AT] sendline: 0020-0040: 61 61 22                                                                                              55"
[D/AT] recvline: 0000-0020: 57 49 46 49 20 44 49 53  43 4F 4E 4E 45 43 54 0D  0A                                                  WIFI DISCONNECT..
[I/at.dev.esp32] esp32 device wifi is disconnect.
[D/AT] recvline: 0000-0020: 57 49 46 49 20 43 4F 4E  4E 45 43 54 45 44 0D 0A                                                      WIFI CONNECTED..
[I/at.dev.esp32] esp32 device wifi is connected.
[D/AT] recvline: 0000-0020: 57 49 46 49 20 47 4F 54  20 49 50 0D 0A                                                               WIFI GOT IP..
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 4F 4B 0D 0A                                                                                           OK..
[I/at.dev.esp32] esp32 device network initialize successfully.
msh >[D/AT] sendline: 0000-0020: 41 54 2B 43 49 46 53 52                                                                               AT+CIFSR
[D/AT] recvline: 0000-0020: 2B 43 49 46 53 52 3A 53  54 41 49 50 2C 22 31 39  32 2E 31 36 38 2E 31 2E  31 30 31 22 0D 0A          +CIFSR:STAIP,"192.168.1.101"..
[D/AT] recvline: 0000-0020: 2B 43 49 46 53 52 3A 53  54 41 4D 41 43 2C 22 66  63 3A 66 35 3A 63 34 3A  33 39 3A 35 64 3A 37 34    +CIFSR:STAMAC,"fc:f5:c4:39:5d:74
[D/AT] recvline: 0020-0040: 22 0D 0A                                                                                              "..
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 4F 4B 0D 0A                                                                                           OK..
[D/AT] sendline: 0000-0020: 41 54 2B 43 49 50 53 54  41 3F                                                                        AT+CIPSTA?
[D/AT] recvline: 0000-0020: 2B 43 49 50 53 54 41 3A  69 70 3A 22 31 39 32 2E  31 36 38 2E 31 2E 31 30  31 22 0D 0A                +CIPSTA:ip:"192.168.1.101"..
[D/AT] recvline: 0000-0020: 2B 43 49 50 53 54 41 3A  67 61 74 65 77 61 79 3A  22 31 39 32 2E 31 36 38  2E 31 2E 31 22 0D 0A       +CIPSTA:gateway:"192.168.1.1"..
[D/AT] recvline: 0000-0020: 2B 43 49 50 53 54 41 3A  6E 65 74 6D 61 73 6B 3A  22 32 35 35 2E 32 35 35  2E 32 35 35 2E 30 22 0D    +CIPSTA:netmask:"255.255.255.0".
[D/AT] recvline: 0020-0040: 0A                                                                                                    .
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 4F 4B 0D 0A                                                                                           OK..
[D/AT] sendline: 0000-0020: 41 54 2B 43 49 50 44 4E  53 3F                                                                        AT+CIPDNS?
[D/AT] recvline: 0000-0020: 2B 43 49 50 44 4E 53 3A  31 39 32 2E 31 36 38 2E  31 30 2E 32 30 30 0D 0A                             +CIPDNS:192.168.10.200..
[D/AT] recvline: 0000-0020: 2B 43 49 50 44 4E 53 3A  32 30 32 2E 39 36 2E 31  32 38 2E 38 36 0D 0A                                +CIPDNS:202.96.128.86..
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 4F 4B 0D 0A                                                                                           OK..
[D/AT] sendline: 0000-0020: 41 54 2B 43 57 44 48 43  50 3F                                                                        AT+CWDHCP?
[D/AT] recvline: 0000-0020: 2B 43 57 44 48 43 50 3A  37 0D 0A                                                                     +CWDHCP:7..
[D/AT] recvline: 0000-0020: 4F 4B 0D 0A                                                                                           OK..
psr: 0x41000000
 pc: 0x000158ba
 lr: 0x00014acf
r12: 0x0ccccccc
r03: 0x20003053
r02: 0x20003040
r01: 0x20002d00
r00: 0x00000007
hard fault on thread: sys_work
thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
tshell    20  suspend 0x000000a0 0x00001000    03%   0x0000000a 000
at_clnt    9  suspend 0x00000090 0x00000600    17%   0x00000001 000
sys_work  23  running 0x000001bc 0x00000c00    40%   0x00000006 000
tidle0    31  ready   0x00000048 0x00000100    34%   0x00000017 000
main      10  suspend 0x00000098 0x00000800    30%   0x00000005 000
```

通过对比`at_device_esp32.c`和`at_device_esp8266.c`
修改
```c
rt_uint8_t dhcp_stat = 0;  
``` 
为    
```c
rt_uint32_t dhcp_stat = 0;
```
问题就解决了，但是不知道为什么这样就好了。