Hi. I want to wake up on uart receive.
I tied rx to INT0, which works fine in the sense of only waking up.
However, my received characters after wake up are crazy random characters (some framing error likely - but the uart error register says everything is fine).
Anyone know how to receive reliably out of sleep mode?
I'm trying to play with sleep modes POWER DOWN and STANDBY
With stand by I need to wait for crystal to stabilize though. I might be willing to even go to a baud rate of 7 if necessary.... At least to see if that works! Right now I do have 65ms startup time selected. But with standby mode, that's a 6 cycle wake up. I have 4mhz crystal. It SHOULD wake up and receive everything fine!
Any ideas? What am I missing here?