[minima] Re: Testing the digital board
- From: <jerry@xxxxxxxxxxxxxxxx>
- To: minima@xxxxxxxxxxxxx
- Date: Wed, 05 Feb 2014 22:18:08 -0700
Mac, the Minima has a serial interface built into the radio design, it
is built on a seperate PCB. I have a USB breakout board, what i'm
lacking is the connection cable. Jerry
K5LRU
Harwood, Texas
> -------- Original Message --------
> Subject: [minima] Re: Testing the digital board
> From: "Mac A. Cody" <maccody@xxxxxxx>
> Date: Wed, February 05, 2014 10:49 pm
> To: minima@xxxxxxxxxxxxx
>
>
> Jerry,
>
> I hope I'm not making a bold assumption, but I hope you are
> not making a cable that connects straight from a PC USB port
> to the serial port of the Arduino controller board. That
> will not work. The protocols are totally different. If you
> want to talk straight to the serial interface on the ATMEGA328,
> you need to have a USB to TTL serial adapter, like the one I've
> linked below:
> http://osepp.com/products/breakout-board/osepp-ftdi-breakout-board/
> Boards like the Arduino Uno have one of these chips built in
> already. The Minima controller board does not. I apologize if
> I am making an ignorant assumption about what you are doing, but
> it is based on what you wrote.
>
> Mac AE5PH
>
>
> On 02/05/2014 10:17 PM, jerry@xxxxxxxxxxxxxxxx wrote:
> > Thanks for the reply Steve. I built the serial board too, but I don't
> > have a usb to serial cable, so right now I'm butchering an old usb cable
> > and tearing out a serial connector from an old chassis to make the
> > cable. It's definately running something, it's just too fast or too weak
> > to see. Jerry
> >
> > K5LRU
> > Harwood, Texas
> >
> >> -------- Original Message --------
> >> Subject: [minima] Re: Testing the digital board
> >> From: "Steve VK2SJA" <vk2sja@xxxxxxxxxxx>
> >> Date: Wed, February 05, 2014 9:44 pm
> >> To: minima@xxxxxxxxxxxxx
> >>
> >>
> >> Hi Jerry,
> >>
> >> I'll try and help as best I can. Difficult as you guys are way ahead of me
> >> in construction terms. Meaning I can't test my own advice. So anyone
> >> better positioned to answer questions please jump in and I'll go QRT.
> >> Mark?
> >>
> >> So with the understanding that I'm not an Arduino guru, here's what I'd
> >> try.
> >>
> >> First - real basics regarding Arduino programs called sketches. Program
> >> execution starts with the setup() function. All instructions here are
> >> executed once. Then program flow will automagically shifts to the loop()
> >> function. The instructions inside here loop forever (executed over and
> >> over again).
> >>
> >> Suggestion. Look for this in the radiono.ino program sketch:-
> >>
> >> void setup() {
> >> lcd.begin(16, 2);
> >> printBuff[0] = 0;
> >> printLine1("Raduino v0.02 ");
> >>
> >> Wire.begin();
> >>
> >> We can see that pretty much the very first thing this program does is
> >> print "Raduino v0.02" on the LCD screen.
> >>
> >> Suggestion to debug. Add these three code lines:-
> >>
> >> printLine1("Raduino v0.02 ");
> >>
> >> //Stuff below added
> >>
> >> Serial.begin(9600); // set up Serial library at 9600 bps
> >> Serial.println("Hello world!"); // prints hello with ending line break
> >> // back on your PC IDE serial console
> >>
> >> delay(10000); // waits 10 seconds so we can see the LCD sign-on message
> >> // just in case something else in program clears
> >> // down the screen so fast we don't see the message
> >> //Stuff above added
> >>
> >> Wire.begin();
> >>
> >> Stuff after the // are comments only. You can leave them out.
> >>
> >> This should do two things. Confirm that the program is indeed running by
> >> sending a message to the serial IDE console. And also leave the sign-on
> >> message on the LCD long enough for us to see. Even if it is cleared off
> >> the screen by later code.
> >>
> >> If you see the sign-on message we go to the next step. If you can't see a
> >> sign-on message we need to find out why.
> >>
> >> Remember to remove these additional lines or "comment them out" after
> >> debugging.
> >>
> >> The three project files in Github are:-
> >>
> >> adiono board_ugly.txt <<-- Just a text file documenting which
> >> processor pins are used for what functions. Not part of the program
> >> (sketch) just documentation.
> >>
> >> radiono.ino <<-- The actual Sketch or program.
> >>
> >> radiono.pdf <<-- PDF document showing circuit diagram of the processor
> >> portion or the radio. Not part of the program.
> >>
> >> Careful. I "think" there was some list discussion about a minor error in
> >> one of these document files just recently. Don't know if Farhan has
> >> corrected it or not.
> >>
> >> Hope this helps.
> >>
> >> PS. After typing all this I re-read your message and realize that you
> >> programmed the chip in a Uno board and then moved it to the radio. So you
> >> may not have built the serial interface onto the radio control board. If
> >> that's the case then obviously the two code lines above the print "Hello
> >> World" to the serial port arn't going to do much for you. ;-)
> >>
> >>
> >>> I finished building the Digital board except for soldering in the si570.
> >>> I would like to test the radiono code and make sure I made the right
> >>> comments in the file so I don't fry the si570. I fired up the board and
> >> all the voltages are good: 4.92 out of the 7805 and 3.24 out of the
> >> LM1117, but I would like to run the code and check the 570's voltage. I
> >> uploaded the radiono sketch to the chip using a Arduino Uno board, and put
> >> the chip in my Digital board, and powered it up. All that happens is the
> >> LCD backlight lights, but no characters. The contrast pot works. The
> >> circuit draws 24ma but no display. Do I need to do something else. There
> >> is another code file on github, what is that for? Jerry
> >>> K5LRU
> >>> Harwood, Texas
> >
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