Dear All,
I have tried DOTA through hyperterminal, it works fine.
I want to incorporate in code. But it gives error for command “AT+DWLSTART=1” in code. I can’t use adl_cmdcreate() for giving command AT+DWLSTART=1.
Has anybody tried DOTA through code?
If you’re doing it in code, use the API calls - don’t try to emulate the AT Command!
To be honest, I found the Application Download sample to be grossly overcomplicated, and its XMODEM protocol implementation has several serious flaws. 
You could study it to get the idea of how to do DOTA, but you might find it easier to start from scratch for your own application…