Hi!
I'm trying to program a blank ATMEG64A with a cheap USBASP. The chip is on a board, with a crystal connected.
I know that the USBASP is working as i have 2 of them, and i've used each other for update the firmware (using "usbasp.atmega8.2011-05-28.hex" file, that i think is the correct one to use)
I'm using both AVRDUDESS 6.3 and ExtremeBurner.
When i try to do a device read or simply a "DETECT" of the device, it always fail.
I've attached the logic analyzer for try to understand what's going on.
On VCC and AVCC i have 4.5v.
The reset signal goes to 0 correctly.
The programmer start the clock at 500hz
Then the programmer send correctly via the MOSI pin to the pin 2/PE0 of the ATMEGA64A the AC 53 00 00 command
After this, i must read something on the MISO pin (pin 3 of the package), but the ATMEGA doesn't output nothing.
Attached there is a screen of the LA.
CH0 0 reset, CH1 CLK, CH2 MOSI, CH3 MISO
What's going on??
Thanks!