Closed
Description
CircuitPython version
Adafruit CircuitPython 9.1.1 on 2024-07-22; Adafruit ItsyBitsy ESP32 with ESP32Code/REPL
import board
import analogbufio
import array
N = 1000
rate = 1000
buffer = array.array("H", [0x0000] * N)
adc = analogbufio.BufferedIn(board.A3, sample_rate=rate)
adc.readinto(buffer)
adc.deinit()
for i in range(N):
print(i, buffer[i])Behavior
>>> %Run -c $EDITOR_CONTENT
Traceback (most recent call last):
File "<stdin>", line 10, in <module>
espidf.IDFError: Invalid argument
>>>
Description
Tested multiple ADC inputs, none seem to work correctly, code taken almost verbatim from documentation
Aware that ADC2 is used for WiFi applications but this is ADC1, error reported unhelpful. ADC itself is working fine e.g.
import board
import analogio
adc = analogio.AnalogIn(board.A3)
print(adc.value)
gives a value proportional to Vin
Additional information
No response