diff options
| -rw-r--r-- | watch-library/hardware/watch/watch_private.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/watch-library/hardware/watch/watch_private.c b/watch-library/hardware/watch/watch_private.c index 4cae3ccb..20f4ee54 100644 --- a/watch-library/hardware/watch/watch_private.c +++ b/watch-library/hardware/watch/watch_private.c @@ -35,6 +35,10 @@ void _watch_init(void) { // Use switching regulator for lower power consumption. SUPC->VREG.bit.SEL = 1; + // work around a silicon erratum that causes the microcontroller to lock up on leaving standby: + // request that the voltage regulator run in standby, and also that it switch to PL0. + SUPC->VREG.bit.RUNSTDBY = 1; + SUPC->VREG.bit.STDBYPL0 = 1; while(!SUPC->STATUS.bit.VREGRDY); // wait for voltage regulator to become ready // check the battery voltage... |