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add a new deep sleep mode alongside backup mode

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This commit is contained in:
Joey Castillo
2021-09-18 12:57:21 -04:00
parent d97e74058f
commit 5ff4a88374
7 changed files with 137 additions and 37 deletions
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9
watch-library/watch/watch_private.c
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@@ -28,6 +28,9 @@ void _watch_init() {
// disable the LED pin (it may have been enabled by the bootloader)
watch_disable_digital_output(RED);
// RAM should be back-biased in STANDBY
PM->STDBYCFG.bit.BBIASHS = 1;
// Use switching regulator for lower power consumption.
SUPC->VREG.bit.SEL = 1;
while(!SUPC->STATUS.bit.VREGRDY);
@@ -41,10 +44,9 @@ void _watch_init() {
SUPC->BOD33.bit.ACTCFG = 1; // Enable sampling mode when active
SUPC->BOD33.bit.RUNSTDBY = 1; // Enable sampling mode in standby
SUPC->BOD33.bit.STDBYCFG = 1; // Run in standby
SUPC->BOD33.bit.RUNBKUP = 1; // Also run in backup mode
SUPC->BOD33.bit.RUNBKUP = 0; // Don't run in backup mode
SUPC->BOD33.bit.PSEL = 0xB; // Check battery level every 4 seconds
SUPC->BOD33.bit.LEVEL = 31; // Detect brownout at 2.5V (1.445V + level * 34mV)
SUPC->BOD33.bit.BKUPLEVEL = 31; // Detect same level in backup mode
SUPC->BOD33.bit.ACTION = 0x2; // Generate an interrupt when BOD33 is triggered
SUPC->BOD33.bit.HYST = 0; // Disable hysteresis
while(!SUPC->STATUS.bit.B33SRDY);
@@ -57,9 +59,6 @@ void _watch_init() {
CALENDAR_0_init();
calendar_enable(&CALENDAR_0);
// Not sure if this belongs in every app -- is there a power impact?
delay_driver_init();
// set up state
btn_alarm_callback = NULL;
a2_callback = NULL;