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| author | Alexsander Akers <me@a2.io> | 2022-01-27 11:12:01 -0500 |
|---|---|---|
| committer | Alexsander Akers <me@a2.io> | 2022-01-27 11:12:01 -0500 |
| commit | a0f8e9c8bc458b0a34b34864703fd97d9835fd86 (patch) | |
| tree | 0ad14a8ba36dd5440b43852a71d099c8a8a3f63e /watch-library/hardware/watch/watch_buzzer.c | |
| parent | 14e4562b7a44ab6882180b69145665d4920769ac (diff) | |
| download | Sensor-Watch-a0f8e9c8bc458b0a34b34864703fd97d9835fd86.tar.gz Sensor-Watch-a0f8e9c8bc458b0a34b34864703fd97d9835fd86.tar.bz2 Sensor-Watch-a0f8e9c8bc458b0a34b34864703fd97d9835fd86.zip | |
Implement buzzer methods with AudioContext API
Diffstat (limited to 'watch-library/hardware/watch/watch_buzzer.c')
| -rw-r--r-- | watch-library/hardware/watch/watch_buzzer.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/watch-library/hardware/watch/watch_buzzer.c b/watch-library/hardware/watch/watch_buzzer.c index a275b00d..c06242ff 100644 --- a/watch-library/hardware/watch/watch_buzzer.c +++ b/watch-library/hardware/watch/watch_buzzer.c @@ -47,10 +47,6 @@ inline void watch_set_buzzer_off(void) { gpio_set_pin_function(BUZZER, GPIO_PIN_FUNCTION_OFF); } -// note: the buzzer uses a 1 MHz clock. these values were determined by dividing 1,000,000 by the target frequency. -// i.e. for a 440 Hz tone (A4 on the piano), 1MHz/440Hz = 2273 -const uint16_t NotePeriods[108] = {18182,17161,16197,15288,14430,13620,12857,12134,11453,10811,10204,9631,9091,8581,8099,7645,7216,6811,6428,6068,5727,5405,5102,4816,4545,4290,4050,3822,3608,3405,3214,3034,2863,2703,2551,2408,2273,2145,2025,1911,1804,1703,1607,1517,1432,1351,1276,1204,1136,1073,1012,956,902,851,804,758,716,676,638,602,568,536,506,478,451,426,402,379,358,338,319,301,284,268,253,239,225,213,201,190,179,169,159,150,142,134,127}; - void watch_buzzer_play_note(BuzzerNote note, uint16_t duration_ms) { if (note == BUZZER_NOTE_REST) { watch_set_buzzer_off(); |