I have a 9Xtend OEM module speaking to a microcontroller (through same to my terminal). I can send +++ and get back an OK, but when I send commands such as AT%V (or any other AT command) I get no answer. I’m sending power/gnd, Send/Receive data, and have tied Shutdown high thru 10K.
Any hints what I should do to at least make the thing respond to setup commands?
Are you following some of the examples outlined in the product manual?
I’m not sure. Can you suggest a page number and position on the page for such an example?
Yes, I followed that one.
+++ => OK
ATDT => (silence)
AT%V => (silence)
etc.
Could I have it in some wrong mode?
You’re sure about your end-of-line?
I have a micro sending AT commands and receiving responses just fine, including AT%V. My end-of-line is specified as ‘\r’ in my code. Are you sure you’re using that character, and not ’
’ newline?
One update: I tried
(0xA) vs. \r (0xD), only the \r works as end-of-line