Re: Uploading the Software

Posted by homerisback on Jul 14, 2017; 9:29pm
URL: http://bluesaab-forum.90.s1.nabble.com/Uploading-the-Software-tp235p1131.html

@NeilR : you're right ! I mixed up steps as it's been a long time I didn't deal with a v3.2... my apologizes.
With the described connections, I uploaded the RN52_PRG sketch (not ArduinoISP) available from Karlis github on the Uno board. Then I was able to set up RN52 via serial monitor.

Actually, after unsuccessful attempts with FTDI or USBasp programmer, I made a 328 breadboard myself that is kind of a shield for Uno board. Foolproof and very handy to hook on Arduino Uno. On one side it connects into power from Uno (5V, 3v3 and GND) and on the other side it connects into 10-11-12-13 pins (Reset, Sck, MISO & MOSI). A switch to choose voltage, a 16mhz oscillator, a 328 socket and 10 usbasp layout ext pins make it multipurpose. With ArduinoISP sketch uploaded in the Uno, I'm able to burn bootloader and program any 28-DIP 328. Today, I keep using it to burn bootloader to SMD Atmega328 on latest BlueSAABs (v5.1-5.3) with a little homemade foolproof harness connected to the USBasp pins of my breadboard.

Regarding your latest tests, as Seth said before, I would double check every polarized component on board : diodes, capacitor(s), chips and shortcuts of course. Did you use enough flux to solder ? When I began in SMD soldering, I was to shy with it and my job wasn't clean enough ; it really is useful !