8000 rp2/machine_adc: Only initialise the ADC periph if not already running. by dpgeorge · Pull Request #6834 · micropython/micropython · GitHub
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rp2/machine_adc: Only initialise the ADC periph if not already running. #6834

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Merged
merged 1 commit into from
Feb 4, 2021
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rp2/machine_adc: Only initialise the ADC periph if not already running. #6834

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5 changes: 4 additions & 1 deletion ports/rp2/machine_adc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -78,7 +78,10 @@ STATIC mp_obj_t machine_adc_make_new(const mp_obj_type_t *type, size_t n_args, s
}
}

adc_init();
// Initialise the ADC peripheral if it's not already running.
if (!(adc_hw->cs & ADC_CS_EN_BITS)) {
adc_init();
}

if (ADC_IS_VALID_GPIO(channel)) {
// Configure the GPIO pin in ADC mode.
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0