FD_ISSET

tcpclient_select_sample.c 经常收不到信息

发布于 2021-05-07 10:40:26 浏览：866 订阅该版

AT 模块已经收到数据，当时上层软件收不到数据。也不是一点都收不到，有时候能收到数据：
```
[D/at.skt.bc28] device socket(1) recv 5 bytes  
>> "3132330D0A"
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 2B 53 4B 54 52 45 43 56  3A 20 31 2C 35 2C 22 33  31 33 32 33 33 30 44 30  41 22 0D 0A                +SKTRECV: 1,5,"3132330D0A"..
[D/at.skt.bc28] device socket(1) recv 5 bytes  
>> "3132330D0A"
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 2B 53 4B 54 52 45 43 56  3A 20 31 2C 35 2C 22 33  31 33 32 33 33 30 44 30  41 22 0D 0A                +SKTRECV: 1,5,"3132330D0A"..
[D/at.skt.bc28] device socket(1) recv 5 bytes  
>> "3132330D0A"
[D/at.skt.bc28] bc28 device socket(1) wait connect result timeout.
[D/AT] sendline: 0000-0020: 41 54 2B 43 47 41 54 54  3F                                                                           AT+CGATT?
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 2B 43 47 41 54 54 3A 20  31 0D 0A                                                                     +CGATT: 1..
[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: 2B 53 4B 54 52 45 43 56  3A 20 31 2C 35 2C 22 33  31 33 32 33 33 30 44 30  41 22 0D 0A                +SKTRECV: 1,5,"3132330D0A"..
[D/at.skt.bc28] device socket(1) recv 5 bytes  
>> "3132330D0A"

Received data = ##0

[D/AT] sendline: 0000-0020: 41 54 2B 53 4B 54 53 45  4E 44 3D 31 2C 33 34 2C  35 34 36 38 36 39 37 33  32 30 36 39 37 33 32 30    AT+SKTSEND=1,34,5468697320697320
[D/AT] sendline: 0020-0040: 35 34 34 33 35 30 32 30  34 33 36 43 36 39 36 35  36 45 37 34 32 30 36 36  37 32 36 46 36 44 32 30    54435020436C69656E742066726F6D20
[D/AT] sendline: 0040-0060: 35 32 35 34 32 44 35 34  36 38 37 32 36 35 36 31  36 34 32 45                                         52542D5468726561642E
[D/AT] recvline: 0000-0020: 0D 0A                                                                                                 ..
[D/AT] recvline: 0000-0020: 4F 4B 0D 0A                                                                                           OK..
```