return code -11 when sending PDU bigger than 20 bytes

[hayyanali-cmd]

Hello, when using the IEEE802.15.4 OQPSK PHY block to send zigbee frames or any type of PDUs, if these PDUs size smal like less than 20 bytes, everything is ok, but when sending larger than 20 bytes, the error: return code -11 appears. this happened either by sending frames coming from the MAC block, or PDU generator or message strobe. are there any configs i should care about related to buffer sizes or something similar to handle this issue. Please note that the error happens after sending one PDU only (if it is big), but not appears when it is small.

But when message is smaller:

regards
Hayyan

[bastibl]

Please don't modify the PHY flowgraph. It is meant to used as a hier block. Please do a git reset and rebuild the PHY. Then, feed the PDUs as shown in your screenshot into the app_in block of the MAC block. This works for me for blobs over 100 byte.

[hayyanali-cmd]

Thanks for your kind fast response, actually I already used the block without modification and when failed I went to the PHY block and got the same.
However I removed all the git repository and cloned again, built from scratch, and here is an example:
First I used bytes less than 15 bytes:

and here is the result: USRP works well but after like few PDUs, the error appears.

But when setting the PDU size more than 20 bytes, the error appear directly.

Tanks in advance
Regards
Hayyan

[bastibl]

I tried this with PDUs up to 110 byte and it works without issues. I use GNU Radio 3.10.12.0. Not sure if this might be a bug in another GNU Radio version. You can track this down by disabling more and more blocks in the flowgraph and terminate the stream early using a NullSink. Adding blocks back, you can figure out where things fail.