Hello !
I have a problem with my bluetooth module.
I can set it a name, a pin code (by AT cmds), but I'm currently receiveing nothing from it...
Example: sending AT, receiving nothing...
I'm using this sketch: HC-05 FC-114 and HC-06 FC-114. Part 2 – Basic AT commands | Martyn Currey
Someone have an idea ?
Regards
Your problem is not clearly explained. Have you succeeded in sending any AT commands? It is not really necessary to display confirmation from bluetooth. I never do.
You don't say which type of Bluetooth you are using. Note particularly that FC-114 does not identify the bluetooth module, it is merely the breakout board on which the bluetooth sits, and that may be where your problem lies. If you are unsure, I believe the most bulletproof way of checking is to seek it with a phone. HC-05 usually identifies itself as HC-05 but, more importantly, an HC-06 always identifies itself as LINVOR.
As far as I am aware, no version of HC-05 has the same procedure, or baud rate for AT mode, as an HC-06 and the latter therefore means that the same code will not work for both. I realise that the title of the link implies one size fits all but the differences are probably pointed out somewhere.
Hello and thanks for your reply.
Nick_Pyner:
Have you succeeded in sending any AT commands? It is not really necessary to display confirmation from bluetooth. I never do.
Yes I did. I can send AT+NAMEMyName, the bluetooth module take the name "MyName". So AT commands works.
I'm using a HC-06 module. (Link: http://www.ebay.fr/itm/5116-Module-Bluetooth-HC-06-pour-Arduino-Emetteur-Recepteur-RF-4-Pin/191816827678?hash=item2ca92c831e:g:wcEAAOSwdGFYnYtv ).
The main problem is that the bluetooth module don't send anything, but can received...
That is very weird...
Solved this: I'm on Mega, and...
Refer to this: https://www.arduino.cc/en/Reference/SoftwareSerial
"Not all pins on the Mega and Mega 2560 support change interrupts, so only the following can be used for RX: 10, 11, 12, 13, 14, 15, 50, 51, 52, 53, A8 (62), A9 (63), A10 (64), A11 (65), A12 (66), A13 (67), A14 (68), A15 (69)."
OK, you don't have a real problem with AT. You have successfully sent the command and, as I said, you don't really need the feedback.
It sounds like you might have used software serial on a hardware port. You might ask if you have good reason for using software serial on a Mega anyway, I bet you don't.
You might find the following background notes useful
http://homepages.ihug.com.au/~npyner/Arduino/GUIDE_2BT.pdf
http://homepages.ihug.com.au/~npyner/Arduino/BT_2_WAY.ino