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bring in RTC functionality

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This commit is contained in:
joeycastillo
2024-09-18 15:06:38 -04:00
parent 0585a1d0d8
commit 29d6ce42f1
5 changed files with 63 additions and 84 deletions
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74
watch-library/hardware/watch/watch_rtc.c
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@@ -22,56 +22,41 @@
* SOFTWARE.
*/
#include "watch_rtc.h"
#include <stddef.h>
ext_irq_cb_t tick_callbacks[8];
ext_irq_cb_t alarm_callback;
ext_irq_cb_t btn_alarm_callback;
ext_irq_cb_t a2_callback;
ext_irq_cb_t a4_callback;
#include "watch_rtc.h"
#include "watch_private.h"
watch_cb_t tick_callbacks[8];
watch_cb_t alarm_callback;
watch_cb_t btn_alarm_callback;
watch_cb_t a2_callback;
watch_cb_t a4_callback;
void watch_rtc_callback(uint16_t interrupt_status);
bool _watch_rtc_is_enabled(void) {
return RTC->MODE2.CTRLA.bit.ENABLE;
}
static void _sync_rtc(void) {
while (RTC->MODE2.SYNCBUSY.reg);
return rtc_is_enabled();
}
void _watch_rtc_init(void) {
MCLK->APBAMASK.reg |= MCLK_APBAMASK_RTC;
if (_watch_rtc_is_enabled()) return; // don't reset the RTC if it's already set up.
RTC->MODE2.CTRLA.bit.ENABLE = 0;
_sync_rtc();
RTC->MODE2.CTRLA.bit.SWRST = 1;
_sync_rtc();
RTC->MODE2.CTRLA.bit.MODE = RTC_MODE2_CTRLA_MODE_CLOCK_Val;
RTC->MODE2.CTRLA.bit.PRESCALER = RTC_MODE2_CTRLA_PRESCALER_DIV1024_Val;
RTC->MODE2.CTRLA.bit.CLOCKSYNC = 1;
RTC->MODE2.CTRLA.bit.ENABLE = 1;
_sync_rtc();
rtc_init();
#ifdef STATIC_FREQCORR
watch_rtc_freqcorr_write(STATIC_FREQCORR, 0);
#endif
rtc_enable();
rtc_configure_callback(watch_rtc_callback);
}
void watch_rtc_set_date_time(watch_date_time date_time) {
_sync_rtc(); // Double sync as without it at high Hz faces setting time is unrealiable (specifically, set_time_hackwatch)
RTC->MODE2.CLOCK.reg = date_time.reg;
_sync_rtc();
void watch_rtc_set_date_time(rtc_date_time date_time) {
rtc_set_date_time(date_time);
}
watch_date_time watch_rtc_get_date_time(void) {
watch_date_time retval;
_sync_rtc();
retval.reg = RTC->MODE2.CLOCK.reg;
return retval;
rtc_date_time watch_rtc_get_date_time(void) {
return rtc_get_date_time();
}
void watch_rtc_register_tick_callback(ext_irq_cb_t callback) {
void watch_rtc_register_tick_callback(watch_cb_t callback) {
watch_rtc_register_periodic_callback(callback, 1);
}
@@ -79,7 +64,7 @@ void watch_rtc_disable_tick_callback(void) {
watch_rtc_disable_periodic_callback(1);
}
void watch_rtc_register_periodic_callback(ext_irq_cb_t callback, uint8_t frequency) {
void watch_rtc_register_periodic_callback(watch_cb_t callback, uint8_t frequency) {
// we told them, it has to be a power of 2.
if (__builtin_popcount(frequency) != 1) return;
@@ -111,7 +96,7 @@ void watch_rtc_disable_all_periodic_callbacks(void) {
watch_rtc_disable_matching_periodic_callbacks(0xFF);
}
void watch_rtc_register_alarm_callback(ext_irq_cb_t callback, watch_date_time alarm_time, watch_rtc_alarm_match mask) {
void watch_rtc_register_alarm_callback(watch_cb_t callback, rtc_date_time alarm_time, rtc_alarm_match mask) {
RTC->MODE2.Mode2Alarm[0].ALARM.reg = alarm_time.reg;
RTC->MODE2.Mode2Alarm[0].MASK.reg = mask;
RTC->MODE2.INTENSET.reg = RTC_MODE2_INTENSET_ALARM0;
@@ -125,8 +110,7 @@ void watch_rtc_disable_alarm_callback(void) {
RTC->MODE2.INTENCLR.reg = RTC_MODE2_INTENCLR_ALARM0;
}
void RTC_Handler(void) {
uint16_t interrupt_status = RTC->MODE2.INTFLAG.reg;
void watch_rtc_callback(uint16_t interrupt_status) {
uint16_t interrupt_enabled = RTC->MODE2.INTENSET.reg;
if ((interrupt_status & interrupt_enabled) & RTC_MODE2_INTFLAG_PER_Msk) {
@@ -162,8 +146,7 @@ void RTC_Handler(void) {
}
}
void watch_rtc_enable(bool en)
{
void watch_rtc_enable(bool en) {
// Writing it twice - as it's quite dangerous operation.
// If write fails - we might hang with RTC off, which means no recovery possible
while (RTC->MODE2.SYNCBUSY.reg);
@@ -173,8 +156,7 @@ void watch_rtc_enable(bool en)
while (RTC->MODE2.SYNCBUSY.reg);
}
void watch_rtc_freqcorr_write(int16_t value, int16_t sign)
{
void watch_rtc_freqcorr_write(int16_t value, int16_t sign) {
RTC_FREQCORR_Type data;
data.bit.VALUE = value;