Am 15.05.2012 02:35, schrieb tomdean:
I have several ET-Base ATmega 128 boards that behave strangely on
power cycle or reset.
On random trials, the device will not restart. Frequently, this
alternates Ok, fail, Ok, fail...
I know that Problem. this happens, wehn you don't programm the AVR's SS
pin as an output before initing the SPI-Interface. If SS is programmed
as input while SPI is on, it will automatically send the SPI-Interface
to slave mode when a high to low transition occurs. You must set SS as
output before configuring the SPI!
Best Regards,
Peter
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