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Reset stuck low detection

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Debian 2023-04-15 17:05:12 -06:00
parent 15f1bcaa90
commit 8927e41180
1 changed files with 3 additions and 1 deletions
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4
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); common_hal_mcu_delay_us(70);
bool value = common_hal_digitalio_digitalinout_get_value(&self->pin); bool value = common_hal_digitalio_digitalinout_get_value(&self->pin);
common_hal_mcu_delay_us(410); common_hal_mcu_delay_us(410);
// test if bus returned high (idle) and not stck at low
bool idle = common_hal_digitalio_digitalinout_get_value(&self->pin);
common_hal_mcu_enable_interrupts(); common_hal_mcu_enable_interrupts();
return value; return value || !idle;
} }
bool common_hal_onewireio_onewire_read_bit(onewireio_onewire_obj_t *self) { bool common_hal_onewireio_onewire_read_bit(onewireio_onewire_obj_t *self) {