I was able to successfully load blinky.c on the ATMega on the gertboard and can program it just fine.
Now, how do I clear the program and stop the lights from blinking?
I tried rebooting the pi, but the program is still running. Tried moving pin 5 of programming header (J23) to ground to reset it, but that just restarts the program, thought it would clear it.
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Gert van Loo
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Re: ATMega Clearing
That is how computers work: when you remove the reset they start running a program**
You can clear the processor FLASH memory by but it will still run a program, the only difference will be
that it does not blink an LED so you don't see it running.
You can erase the flash by running the 'avrdude' program with the -e options (together with the other options)
I think the total command is:
avrdude -p m328 -c gpio -e
But as I said: the CPU will still be running after that,
you just have the illusion of it doing nothing.
**Provided all other conditions are met like power, X-tal present etc.
You can clear the processor FLASH memory by but it will still run a program, the only difference will be
that it does not blink an LED so you don't see it running.
You can erase the flash by running the 'avrdude' program with the -e options (together with the other options)
I think the total command is:
avrdude -p m328 -c gpio -e
But as I said: the CPU will still be running after that,
you just have the illusion of it doing nothing.
**Provided all other conditions are met like power, X-tal present etc.
Re: ATMega Clearing
Thanks Gert, that lead me in the right direction. This is what I had to do to get it to erase:
Code: Select all
avrdude -p m328p -c gpio -e