Docs say that the response to AT+QFUPL is:
+QFUPL: <upload_size>,<checksum>
I’m uploading successfully, but can’t figure out how the module is calculating the checksum.
For example, if I upload my 1187 byte cert, the module reports:
+QFUPL: 1187,2d19
but I can’t figure out how it’s calculating 2d19.
I read this post:
https://forums.quectel.com/t/bg96-checksum-for-file-after-uploaded-c-code/5297
but neither algorithm produces the 2d19
checksum that’s reported with the +QFUPL:
Could you provide some insight? Maybe the crc-calc code snippet from the module itself?
Thanks,
-Dave