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Author Topic: AVR-CAN usb overcurrent  (Read 2759 times)


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AVR-CAN usb overcurrent
« on: June 27, 2013, 01:10:45 PM »
Recently I bought board AVR-CAN, which is equipted with AT90CAN128.

I have programmer USBAsp, when I tried to program it , my computer disconnected the programmer with error “Overcurrent on USB port..”. This happens also with connected of external source to the PCB.
I tried it also with STK500v2, but the same result.

The both programmers are working (tested on another PCB).

I wanted to know if you can suggest some way how to make it, or what type of programmer would do the work?

Thank you


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Re: AVR-CAN usb overcurrent
« Reply #1 on: June 27, 2013, 04:58:25 PM »
Hey Metodej,

Did you notice the connector in AVR-CAN is named JTAG (not ICSP/ISP)?

You have to use AVR debugger. The board was designed this way for easier debugging.

Now to tell you honestly there is a way to implement ICSP interface but that would require cutting an element from the board (which would void your warranty) and using 10 jumper wires. If you wish I can give you more details.

Best regards,
Technical support and documentation manager at Olimex


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Re: AVR-CAN usb overcurrent
« Reply #2 on: June 27, 2013, 05:42:56 PM »
Ah, sorry, I missed that information (no ISP programming).

I saw the post here on forum about how to make the ICSP work, but I rather prefer to keep the warranty (at least for first tests).

Thank you very much for help ;)