BC66 udp send fail

IoT Modules LPWA Module
1

I am trying to use BC66-DVK to transport messages with the remote server. Problem is that every time I try to send messafe by using “AT+QISEND(X)” response is “SEND FAIL” (See the log below).

*[2019-12-14_13:05:47:907]

[2019-12-14_13:05:47:907]F1: 0000 0000

[2019-12-14_13:05:47:907]V0: 0000 0000 [0001]

[2019-12-14_13:05:47:907]00: 0006 000C

[2019-12-14_13:05:47:907]01: 0000 0000

[2019-12-14_13:05:47:907]U0: 0000 0001 [0000]

[2019-12-14_13:05:47:907]T0: 0000 00B4

[2019-12-14_13:05:47:907]Leaving the BROM

[2019-12-14_13:05:48:187]

[2019-12-14_13:05:48:187]RDY

[2019-12-14_13:05:48:187]+CFUN: 1

[2019-12-14_13:05:49:214]

[2019-12-14_13:05:49:214]+CPIN: READY

[2019-12-14_13:05:54:867]at

[2019-12-14_13:05:54:873]OK

[2019-12-14_13:05:57:663]AT+CGEREP=1

[2019-12-14_13:05:57:671]OK

[2019-12-14_13:06:00:296]AT+CEREG=5

[2019-12-14_13:06:00:306]OK

[2019-12-14_13:06:04:284]AT+CGDCONT=1,“IP”,“5gtnouluiot”

[2019-12-14_13:06:04:292]OK

[2019-12-14_13:06:07:665]AT+CGDCONT?

[2019-12-14_13:06:07:673]+CGDCONT: 1,“IP”,“5gtnouluiot”,"",0,0,0,0,0

[2019-12-14_13:06:07:673]OK

[2019-12-14_13:06:11:639]at+cops?

[2019-12-14_13:06:11:643]+COPS: 0,2,“24427”,9

[2019-12-14_13:06:11:643]OK

[2019-12-14_13:06:14:382]at+cereg?

[2019-12-14_13:06:14:391]+CEREG: 5,1,“008C”,“00052CD4”,9,0,0,“11100000”,“11100000”

[2019-12-14_13:06:14:391]OK

[2019-12-14_13:06:19:375]AT+CGACT=1

[2019-12-14_13:06:19:387]+CGEV: ME PDN ACT 1

[2019-12-14_13:06:19:387]OK

[2019-12-14_13:06:23:310]AT+QIOPEN=1,0,“UDP”,“REMOTE_IP”,REMOTE_PORT,0,1

[2019-12-14_13:06:23:326]OK

[2019-12-14_13:06:23:335]

[2019-12-14_13:06:23:335]+QIOPEN: 0,0

[2019-12-14_13:06:27:847]AT+QISEND=0,10,1234567890

[2019-12-14_13:06:27:855]OK

[2019-12-14_13:06:27:862]

[2019-12-14_13:06:27:862]SEND FAIL

[2019-12-14_13:06:30:067]AT+QISEND=0,10,1234567890

[2019-12-14_13:06:30:078]OK

[2019-12-14_13:06:30:082]

[2019-12-14_13:06:30:082]SEND FAIL

[2019-12-14_13:06:32:016]AT+QISEND=0,10,1234567890

[2019-12-14_13:06:32:025]OK

[2019-12-14_13:06:32:033]

[2019-12-14_13:06:32:033]SEND FAIL

[2019-12-14_13:06:37:015]AT+QICLOSE=0

[2019-12-14_13:06:37:025]OK

[2019-12-14_13:06:37:030]

[2019-12-14_13:06:37:030]CLOSE OK*

Same remote server works just fine with couple of other devices I have (e.g. BC68 and BG96). Any ideas what might be the reason for this SEND FAIL response?

Br,
Niko

2

Hi Niko
image
The labeling parameters in Figure 1 above are “IP address” or “domain name”，not “REMOTE_IP”.
“REMOTE_IP” is your UDP server that can run?

“REMOTE_PORT” Port number of the remote UDP server. The range is 1-65535.

3

Hi,

Obviously I used IP address and port number of my remote server there. I just didn’t want to share those here so I modified “REMOTE_IP” and “REMOTE_PORT” for this log. Problem is not there since other devices using same IP/port number are working just fine. Any ideas how to debug this issue?

Br,
Niko

4

try after +QIOPEN get AT+QISTATE

5

Hi Niko
Is the server open?
ATI query provides firmware version.

6

Hi,

QISTATE response:
[2019-12-18_17:46:18:882]AT+QISTATE?

[2019-12-18_17:46:18:897]+QISTATE: 0,“UDP”,“GIVEN IP ADDRESS”,21185,1,2,1,1

[2019-12-18_17:46:18:897]OK

Server should be working just fine. Other devices are using it without any problems.
ATI response:
[2019-12-18_17:49:41:578]ATI

[2019-12-18_17:49:41:598]Quectel_Ltd
[2019-12-18_17:49:41:598]Quectel_BC66
[2019-12-18_17:49:41:598]Revision: BC66NBR01A07

[2019-12-18_17:49:41:598]OK

Any further ideas how to debug this issue?

Br,
Niko

7

Hi Niko
Usually, this problem wouldnt occur. Pls provide the Gneie log and i will help analyze it.
You can download the log tool and useguide from the following link.Thanks!
Genie