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WIP: refactor RTC to use clock mode directly

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This commit is contained in:
Joey Castillo
2021-09-27 17:42:27 -04:00
parent 751ed9c7a4
commit a65dcf1ec8
8 changed files with 228 additions and 122 deletions
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40
watch-library/watch/watch_deepsleep.c
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@@ -29,24 +29,9 @@
#warning This board revision does not support external wake on BTN_ALARM, so watch_register_extwake_callback will not work with it. Use watch_register_interrupt_callback instead.
#endif
static void extwake_callback(uint8_t reason);
ext_irq_cb_t btn_alarm_callback;
ext_irq_cb_t a2_callback;
ext_irq_cb_t a4_callback;
static void extwake_callback(uint8_t reason) {
if (reason & RTC_TAMPID_TAMPID2) {
if (btn_alarm_callback != NULL) btn_alarm_callback();
} else if (reason & RTC_TAMPID_TAMPID1) {
if (a2_callback != NULL) a2_callback();
} else if (reason & RTC_TAMPID_TAMPID0) {
if (a4_callback != NULL) a4_callback();
}
}
void watch_register_extwake_callback(uint8_t pin, ext_irq_cb_t callback, bool level) {
uint32_t pinmux;
hri_rtc_tampctrl_reg_t config = hri_rtc_get_TAMPCTRL_reg(RTC, 0xFFFFFFFF);
hri_rtc_tampctrl_reg_t config = RTC->MODE2.TAMPCTRL.reg;
switch (pin) {
case A4:
@@ -84,16 +69,17 @@ void watch_register_extwake_callback(uint8_t pin, ext_irq_cb_t callback, bool le
gpio_set_pin_function(pin, pinmux);
// disable the RTC
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);
}
// update the configuration
hri_rtc_write_TAMPCTRL_reg(RTC, config);
// re-enable the RTC
hri_rtcmode0_set_CTRLA_ENABLE_bit(RTC);
RTC->MODE2.CTRLA.bit.ENABLE = 0;
while (RTC->MODE2.SYNCBUSY.bit.ENABLE);
_extwake_register_callback(&CALENDAR_0.device, extwake_callback);
// update the configuration
RTC->MODE2.TAMPCTRL.reg = config;
// re-enable the RTC
RTC->MODE2.CTRLA.bit.ENABLE = 1;
NVIC_ClearPendingIRQ(RTC_IRQn);
NVIC_EnableIRQ(RTC_IRQn);
RTC->MODE2.INTENSET.reg = RTC_MODE2_INTENSET_TAMPER;
}
void watch_disable_extwake_interrupt(uint8_t pin) {
@@ -176,7 +162,7 @@ void watch_enter_shallow_sleep(char *message) {
_watch_disable_all_peripherals_except_slcd();
// disable tick interrupt
watch_register_tick_callback(NULL);
watch_disable_tick_callback();
// disable brownout detector interrupt, which could inadvertently wake us up.
SUPC->INTENCLR.bit.BOD33DET = 1;
@@ -202,7 +188,7 @@ void watch_enter_deep_sleep() {
// so let's do it!
watch_register_extwake_callback(BTN_ALARM, NULL, true);
watch_register_tick_callback(NULL);
watch_disable_tick_callback();
_watch_disable_all_peripherals_except_slcd();
slcd_sync_deinit(&SEGMENT_LCD_0);
hri_mclk_clear_APBCMASK_SLCD_bit(SLCD);