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-- Bluno V1.6 - Bluetooth Serail link --

Unread postPosted:Wed Sep 24, 2014 9:45 am
by Zhursh
The arduino has no code in it so no interation between the bluetooth chip and the atmega should'nt be a problem
The problem I'm having is the bluetooth serial link between to the atmega chip.

What I have tested.
-By using a external FTDI cable plugged into the TX/RX pins (Pin 1/2 on the header) I can monitor the line.

Senerio 1
- Usb plugged in, serial monttor open.
This works fine and the mobile can link and sends information accross to the atmega and this is see on the FTDI cable and the USB serial monitor.

Senerio 2
- Usb plugged in, serial monitor disconnected after power cycle.
This produces no joy, the phone links to the bluetooth but no serial is outputed on the FTDI cable.

Senerio 3
- Usb plugged in, serial monitor connected, then disconnected.
This works, output on the FTDI cable.

Basicaly I would like the system to run without having to connect the USB cable each time the system is turned on.
The FTDI cable is in the system for debug purposes only and will also be removed in the final solution.


Can anyone replicate this issue?
Any suggestions what I could do to make the system work without the USB cable?

Re: -- Bluno V1.6 - Bluetooth Serail link --

Unread postPosted:Thu Sep 25, 2014 3:22 am
by Grey.CC
[quote]Senerio 2
- Usb plugged in, serial monitor disconnected after power cycle.
This produces no joy, the phone links to the bluetooth but no serial is outputed on the FTDI cable.

Senerio 3
- Usb plugged in, serial monitor connected, then disconnected.
This works, output on the FTDI cable.[/quote]

Hello Zhursh,

I guess it is BLE data issue.
Could you try the Command "AT+USBDEBUG=ON"? It is off in default setting.
Or try again with an external power without USB cable plugged in

Re: -- Bluno V1.6 - Bluetooth Serail link --

Unread postPosted:Fri Sep 26, 2014 1:27 am
by Zhursh
Thanks Grey,

I have the project set up with a SM5100b and DFR0105 power board. I will try the debug command and get back.