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WIP deep sleep mode

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This commit is contained in:
Joey Castillo
2021-08-03 18:00:07 -04:00
parent 8a06636833
commit fc31739eb6
9 changed files with 126 additions and 51 deletions
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30
watch-library/watch/watch.c
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@@ -271,8 +271,7 @@ static void tick_callback(struct calendar_dev *const dev) {
void watch_enable_tick_callback(ext_irq_cb_t callback) {
tick_user_callback = callback;
// TODO: rename this method to reflect that it now sets the PER7 interrupt.
_tamper_register_callback(&CALENDAR_0.device, &tick_callback);
_prescaler_register_callback(&CALENDAR_0.device, &tick_callback);
}
static bool ADC_0_ENABLED = false;
@@ -359,8 +358,27 @@ uint32_t watch_get_backup_data(uint8_t reg) {
return 0;
}
void watch_enter_deep_sleep(){
// Not yet implemented.
// TODO: enable tamper interrupt on ALARM pin.
// sleep(5);
static void extwake_callback(struct calendar_dev *const dev) {
// this will never get called since we are basically waking from reset
}
void watch_enter_deep_sleep() {
// enable and configure the external wake interrupt
_extwake_register_callback(&CALENDAR_0.device, &extwake_callback);
_tamper_enable_debounce_asynchronous(&CALENDAR_0.device);
// disable SLCD
slcd_sync_deinit(&SEGMENT_LCD_0);
hri_mclk_clear_APBCMASK_SLCD_bit(SLCD);
// TODO: disable other peripherals
// disable EIC interrupt on ALARM pin (if any) and enable RTC interrupt.
ext_irq_disable(BTN_ALARM);
gpio_set_pin_direction(BTN_ALARM, GPIO_DIRECTION_IN);
gpio_set_pin_pull_mode(BTN_ALARM, GPIO_PULL_DOWN);
gpio_set_pin_function(BTN_ALARM, PINMUX_PA02G_RTC_IN2);
// go into backup sleep mode
sleep(5);
}