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Merge pull request #7865 from CanyonCasa/reset

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Reset stuck low detection
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Scott Shawcroft 2023-04-18 08:42:23 -07:00 committed by GitHub
commit ebfde5c3fa
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1 changed files with 3 additions and 1 deletions
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shared-module/onewireio/OneWire.c
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@ -59,8 +59,10 @@ bool common_hal_onewireio_onewire_reset(onewireio_onewire_obj_t *self) {
common_hal_mcu_delay_us(70);
bool value = common_hal_digitalio_digitalinout_get_value(&self->pin);
common_hal_mcu_delay_us(410);
// test if bus returned high (idle) and not stuck at low
bool idle = common_hal_digitalio_digitalinout_get_value(&self->pin);
common_hal_mcu_enable_interrupts();
return value;
return value || !idle;
}
bool common_hal_onewireio_onewire_read_bit(onewireio_onewire_obj_t *self) {