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Topic: ATMEGA644 Serial1 can't work (Read 1 time) previous topic - next topic

Nick Gammon

Did we? But you decided not to follow my advice about the code tags did you?


we got same result no matter serial1  pin (RXD1,TXD1) were empty

Well, now, there's a surprise.

or connected to RS232 driver.

So, it must be a programming issue? Not hardly.


it should not be programming issue, The same codes run well on ATMEGA2560.  There should be a bug with arduino  ATMEGA644 SDK


If you have a real atmega644, and not a 644a or 644p, then I think that in fact it only has one UART!

Tom Carpenter

Yup, only the larger AtMega1284 from that series has two UARTs.

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