No response from HL6528rd with AT+KUDPCFG

IoT Modules Legacy HL Series
1

Hi,

I have been developing a product for some time that uses the HL6528rd. I have gotten to the point where everything works most of the time.

main issue I am facing is the times when the module doesn’t respond to the commands that are sent.

KUDPCFG is the main culprit, sometimes I send the command and the board replies within 1 or 2 seconds as such:

AT+KUDPCFG=1,0
+KUDPCFG: 1

OK

but often it doesn’t respond at all, even when left for up to 30 seconds.

I have enabled the UDP sprecific URCs and also CME errors.

These unexpected delays make it difficult to handle errors and lead to code that runs slowly/unreliably.

Are there any known causes for the device not responding. Is there a way to detect that such an event has occured without waiting?

Thanks,

Huw

2

Hi Huw,

Please try to reduce the value of and in +KCNXIMER. And do the test again with the flowing commands:
AT+CGREG?
AT+KCNXTIMER?
AT+KURCCFG=“UDPC”,1,1
AT+KCNXCFG=1,“GPRS”,“APN”
AT+KCNXTIMER=1,15,1,16 //Try to reduce the value of and .
AT+KUDPCFG=1,0