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tweak to API nomenclature: tick happens once a second, other interrupts are periodic

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This commit is contained in:
Joey Castillo
2021-09-28 19:18:42 -04:00
parent 9da9dfb7b2
commit 6334af0136
3 changed files with 28 additions and 25 deletions
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22
watch-library/watch/watch_rtc.c
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@@ -70,20 +70,20 @@ watch_date_time watch_rtc_get_date_time() {
return retval;
}
void watch_rtc_register_1Hz_callback(ext_irq_cb_t callback) {
watch_rtc_register_tick_callback(callback, 1);
void watch_rtc_register_tick_callback(ext_irq_cb_t callback) {
watch_rtc_register_periodic_callback(callback, 1);
}
void watch_rtc_disable_1Hz_callback() {
watch_rtc_disable_tick_callback(1);
void watch_rtc_disable_tick_callback() {
watch_rtc_disable_periodic_callback(1);
}
void watch_rtc_register_tick_callback(ext_irq_cb_t callback, uint8_t period) {
void watch_rtc_register_periodic_callback(ext_irq_cb_t callback, uint8_t frequency) {
// we told them, it has to be a power of 2.
if (__builtin_popcount(period) != 1) return;
if (__builtin_popcount(frequency) != 1) return;
// this left-justifies the period in a 32-bit integer.
uint32_t tmp = period << 24;
uint32_t tmp = frequency << 24;
// now we can count the leading zeroes to get the value we need.
// 0x01 (1 Hz) will have 7 leading zeros for PER7. 0xF0 (128 Hz) will have no leading zeroes for PER0.
uint8_t per_n = __builtin_clz(tmp);
@@ -96,13 +96,13 @@ void watch_rtc_register_tick_callback(ext_irq_cb_t callback, uint8_t period) {
RTC->MODE2.INTENSET.reg = 1 << per_n;
}
void watch_rtc_disable_tick_callback(uint8_t period) {
if (__builtin_popcount(period) != 1) return;
uint8_t per_n = __builtin_clz(period << 24);
void watch_rtc_disable_periodic_callback(uint8_t frequency) {
if (__builtin_popcount(frequency) != 1) return;
uint8_t per_n = __builtin_clz(frequency << 24);
RTC->MODE2.INTENCLR.reg = 1 << per_n;
}
void watch_rtc_disable_all_tick_callbacks() {
void watch_rtc_disable_all_periodic_callbacks() {
RTC->MODE2.INTENCLR.reg = 0xFF;
}