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by tfpratt
Tue Apr 22, 2014 12:43 am
Forum: HATs and other add-ons
Topic: Connecting to Gertduino via serial
Replies: 20
Views: 14418

Re: Connecting to Gertduino via serial

Aha! That was it! I'm ashamed to say that I wasn't actually trying to talk to the 48, but had put the jumpers in the wrong positions for the 328. I corrected the jumpers and can see the serial output now. Thanks again Gert. Now to try and hook up an input device!

-Todd
by tfpratt
Thu Apr 17, 2014 10:32 pm
Forum: HATs and other add-ons
Topic: Connecting to Gertduino via serial
Replies: 20
Views: 14418

Re: Connecting to Gertduino via serial

You're only sending your text once. You might want to move the Serial.println into the loop. Thanks for the help. I've updated the sketch to read: void setup(){ Serial.begin(9600); } void loop() { Serial.println("Is there anybody out there?"); } Unfortunately I still do not see a result in the mini...
by tfpratt
Thu Apr 17, 2014 10:25 pm
Forum: HATs and other add-ons
Topic: Connecting to Gertduino via serial
Replies: 20
Views: 14418

Re: Connecting to Gertduino via serial

Have you connected up the serial ports between the Pi and the 328 chip? See the Gertduino manual section which is available here: http://www.element14.com/community/community/raspberry-pi/raspberry-pi-accessories/gertduino Page five top right picture: Pi to Atmega-328 Hi Gert, Sorry for the slow re...
by tfpratt
Sat Apr 12, 2014 12:29 pm
Forum: HATs and other add-ons
Topic: Connecting to Gertduino via serial
Replies: 20
Views: 14418

Re: Connecting to Gertduino via serial

don't forget the pi holds the gertduino reset low until you run gerts reset_off script or remove the reset jumper. I googled the reset_off script without avail. I tried removing the programming jumpers, but got an error in the sketch above, which was fixed when I put them back on. Can you point me ...
by tfpratt
Thu Apr 10, 2014 1:38 am
Forum: HATs and other add-ons
Topic: Connecting to Gertduino via serial
Replies: 20
Views: 14418

Re: Connecting to Gertduino via serial

Hi folks, complete n00b here. I am having a similar problem seeing the serial communications from the gertduino. Like the OP, I have edited the 2 text files in question, I have the gertduino jumpers in place (also the programming jumpers), I've installed minicom. On the Arduino IDE, I've triple chec...
by tfpratt
Thu Apr 10, 2014 12:45 am
Forum: HATs and other add-ons
Topic: verification error, first mismatch at byte 0x0000
Replies: 3
Views: 4370

Re: verification error, first mismatch at byte 0x0000

Gert,

Thanks for the help. Not sure how I missed it in the FAQ, but slowing down avrdude seemed to do the trick. Now if I can just figure out how serial communications work so I can see my output in minicom... off to another forum I suppose.

Todd
by tfpratt
Tue Apr 08, 2014 1:59 am
Forum: HATs and other add-ons
Topic: verification error, first mismatch at byte 0x0000
Replies: 3
Views: 4370

verification error, first mismatch at byte 0x0000

Hello all, I'm pretty new to this, but I seem to be running into a common problem. Using the Arduino IDE on a Gertduino, running a simple sketch (Blink), I get the following, but not always: avrdude: verification error, first mismatch at byte 0x0000 0x0c != 0x00 avrdude: verification error; content ...

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