WIU and UART Serial transmission

Posted on May 17, 2011 at 09:39

Does anyone know if it is possible to use a UART receive interrupt to wake up the processor from sleep mode? Or should I just try to tie the UART transmission wire to some external interrupt pin elsewhere on the processor?

Thanks.

Posted on May 17, 2011 at 09:39

Hi SJackson,

It's not possible to use UART receive interrupt to wake up the processor from sleep mode.

In fact, sleep mode can be triggered by RTC Alarm, external interrupt via wake-up unit (WIU) or externel reset.

with best regards,

mirou