EC200U not receiving QIURC in buffer access mode and UDP Service

IoT Modules LTE Standard Module
1

Hi Team,

I am working with EC200U in UDP Service mode. I am noticing that I do not get the URC notification for data received on that socket. I can confirm that the data is indeed there in the buffer but did not receive any URC.

If I switch to Direct Push mode ( AT+QISWTMD=3,1) i get get the notification but not in the buffer access mode (0). Is there any know bug related to this?

My firmware version is
ATI
Quectel
EC200U
Revision: EC200UCNAAR03A03M08

2

Ignore this. There was an earlier recv which wasn’t processed.

Please note that if the buffer is not empty, and the module receives data again, it will not report a new
URC until all the received data has been read via AT+QIRD from buffer.

3

Hi
Yes，This is normal logic in the current version. If the module receives data again while there’s still data in the cache, it won’t report a new URC. It won’t report a new URC until all data in the cache has been read.

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