diff options
Diffstat (limited to 'movement/movement.c')
| -rw-r--r-- | movement/movement.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/movement/movement.c b/movement/movement.c index aa95f2f1..42b73526 100644 --- a/movement/movement.c +++ b/movement/movement.c @@ -152,14 +152,19 @@ static void _movement_handle_scheduled_tasks(void) { } void movement_request_tick_frequency(uint8_t freq) { - if (freq == 128) return; // Movement uses the 128 Hz tick internally + // Movement uses the 128 Hz tick internally + if (freq == 128) return; + + // Movement requires at least a 1 Hz tick. + // If we are asked for an invalid frequency, default back to 1 Hz. + if (freq == 0 || __builtin_popcount(freq) != 1) freq = 1; // disable all callbacks except the 128 Hz one watch_rtc_disable_matching_periodic_callbacks(0xFE); movement_state.subsecond = 0; movement_state.tick_frequency = freq; - if (freq) watch_rtc_register_periodic_callback(cb_tick, freq); + watch_rtc_register_periodic_callback(cb_tick, freq); } void movement_illuminate_led(void) { |