Hi
I am using a ARM GCC tool chain 4.7
My platform is a Cortex M3 based platform and we use a low power state
In this low power state
voltage of CM3 is reduced to 1.08 and all peripherals except RTC is put in self retaintion.
RTC and a GPIO pin are only 2 sources of wakeup.
When I compile the code with ARM GCC 4.7.4 and run low power case
wakeup does not occur
Any idea what has changed in the compiler chain.
When optimization level si set to Os it does not work
But when O0 optimization is used code works and low power wakeup occurs.