Posted on December 06, 2011 at 08:46Hello,
I finally get the USB stack to work on my custom hardware.
Last thing I need to fix is that once everything is started I rely only upon interrupts (as the USB stack), so my main method looks like :
int main(void)
{
init();
while(1)
__WFI();
}
But with the USB stack active, it works only if I change the __WFI() intrinsic by __nop().
That means the MCU doesn't automatically enters sleep mode between interrupts, and my power consumption increased a lot (by 20/30mA), I cannot really afford that on the LDO.
Do anyone have a clue about why the USB stack doesn't work with WFI ?
Thomas.
[EDIT] Do you think using SLEEPONEXIT would change something ?
