Question about Atmel chip - Raspberry Pi Forums

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hi

i've assembled gertboard shipped without 3 buffer chips ability test pretty limited.

i've uploaded example blink program avr , connected logic probe pin being used , can confirm it's cycling expected, if disconnect ribbon cable between pi , gertboard avr doesn't restart.

seems tied jumper leads gpio pins spi programming header avr. if remove them disconnect/reconncect ribbon cable avr starts expected, while jumper wires in place avr won't start when powered up

result of buffer chips not being installed, i've done wrong, or normal operation?

thanks

i have question atmega chip on board.

can use same sketch created arduino uno , upload gertboard atmega chip?

not using delay() commands should not effect operation. also, default timer speeds on ~12mhz @ 3v3 version of chip?


raspberrypi



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