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

final deep sleep refactor: retain RAM, call it shallow sleep mode

Browse Source
This commit is contained in:
Joey Castillo
2021-09-23 14:57:30 -04:00
parent fd5e8046d0
commit a23901f843
3 changed files with 80 additions and 63 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
watch-library/watch/watch_deepsleep.c
View File

@@ -89,6 +89,34 @@ void watch_register_extwake_callback(uint8_t pin, ext_irq_cb_t callback, bool le
_extwake_register_callback(&CALENDAR_0.device, extwake_callback);
}
void watch_disable_extwake_interrupt(uint8_t pin) {
hri_rtc_tampctrl_reg_t config = hri_rtc_get_TAMPCTRL_reg(RTC, 0xFFFFFFFF);
switch (pin) {
case A4:
a4_callback = NULL;
config &= ~(3 << RTC_TAMPCTRL_IN0ACT_Pos);
break;
case A2:
a2_callback = NULL;
config &= ~(3 << RTC_TAMPCTRL_IN1ACT_Pos);
break;
case BTN_ALARM:
btn_alarm_callback = NULL;
config &= ~(3 << RTC_TAMPCTRL_IN2ACT_Pos);
break;
default:
return;
}
if (hri_rtcmode0_get_CTRLA_ENABLE_bit(RTC)) {
hri_rtcmode0_clear_CTRLA_ENABLE_bit(RTC);
hri_rtcmode0_wait_for_sync(RTC, RTC_MODE0_SYNCBUSY_ENABLE);
}
hri_rtc_write_TAMPCTRL_reg(RTC, config);
hri_rtcmode0_set_CTRLA_ENABLE_bit(RTC);
}
void watch_store_backup_data(uint32_t data, uint8_t reg) {
if (reg < 8) {
RTC->MODE0.BKUP[reg].reg = data;
@@ -128,10 +156,7 @@ void _watch_disable_all_peripherals_except_slcd() {
MCLK->APBCMASK.reg &= ~MCLK_APBCMASK_SERCOM3;
}
void watch_enter_deep_sleep(char *message) {
// configure the ALARM interrupt (the callback doesn't matter)
watch_register_extwake_callback(BTN_ALARM, NULL, true);
void watch_enter_shallow_sleep(char *message) {
if (message != NULL) {
watch_display_string(" ", 0);
watch_display_string(message, 0);
@@ -152,16 +177,20 @@ void watch_enter_deep_sleep(char *message) {
// disable all pins
_watch_disable_all_pins_except_rtc();
// turn off RAM completely.
PM->STDBYCFG.bit.BBIASHS = 3;
// enter standby (4); we basically hang out here until an interrupt forces us to reset.
// enter standby (4); we basically hang out here until an interrupt wakes us.
sleep(4);
NVIC_SystemReset();
// and we awake! re-enable the brownout detector
SUPC->INTENSET.bit.BOD33DET = 1;
// call app_setup so the app can re-enable everything we disabled.
app_setup();
// and call app_wake_from_sleep (since main won't have a chance to do it)
app_wake_from_sleep();
}
void watch_enter_backup_mode() {
void watch_enter_deep_sleep() {
// this will not work on the current silicon revision, but I said in the documentation that we do it.
// so let's do it!
watch_register_extwake_callback(BTN_ALARM, NULL, true);