hueso/Sensor-Watch
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Activity

enable high-efficiency low power regulator

Browse Source
This commit is contained in:
Joey Castillo
2022-02-13 14:15:00 -05:00
parent 203850104d
commit b91f025542
3 changed files with 26 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
watch-library/hardware/watch/watch_deepsleep.c
View File

@@ -155,8 +155,10 @@ void watch_enter_sleep_mode(void) {
// disable tick interrupt
watch_rtc_disable_all_periodic_callbacks();
// disable brownout detector interrupt, which could inadvertently wake us up.
SUPC->INTENCLR.bit.BOD33DET = 1;
// set brownout detector to check voltage once an hour (64 minutes).
// in sleep, we're not worried about the LED causing a voltage drop and a brownout.
// changes to voltage will take place slowly over months, not quickly over seconds.
SUPC->BOD33.bit.PSEL = 0xF;
// disable all pins
_watch_disable_all_pins_except_rtc();
@@ -164,8 +166,8 @@ void watch_enter_sleep_mode(void) {
// enter standby (4); we basically hang out here until an interrupt wakes us.
sleep(4);
// and we awake! re-enable the brownout detector
SUPC->INTENSET.bit.BOD33DET = 1;
// and we awake! speed the brownout detector back up to 1 check per second.
SUPC->BOD33.bit.PSEL = 0x9;
// call app_setup so the app can re-enable everything we disabled.
app_setup();