I'm trying to enter on the command mode on this board http://iteadstudio.com/store/images/produce/Platform/ArduinoCom/IteaduinoBT/iteaduinoBT_DS.pdf.
It is a bad-documented, no support Arduino BT clone. I would like to send some AT commands, but Its not working.
Just to make sure that i'm not doing something wrong, i would like to double check the jumpers configuration. As you can see in the Datasheet lnked above, we have two positions for the jumpers (in a 6 pins set, it confuses me already, because with 6 pins, we should have 3 combinations, and not 2 as described)
So from the picture attached which are the A,B and C(?!): red: A, yellow: B?
From the data sheet:
a jumper to set the connections of HC-05. When the jumper is set in B, the HC-05 communicates to FT232R, when the jumper is set to A, the HC-05 communicates to Atmega328P(board).
I was just able to enter in the command mode, setting the SWITCH to CMD, Jumpers at A (as cited in the accepted answer) and connected via USB, 38400. It means: the data sheet is wrong, it inverted the operations between jumpers A and B, right? AFAIK the communication HC-05 - FT232R is the serial communication that I used between my computer and the HC05 via cable and not bt, right?