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products:sbc:edge-2l:applications:gpio:adc
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Table of Contents
Edge-2L ADC
Introduction
This documentation will introduce the usage of ADC on the Edge-2L IO board.
For Edge-2L, in order to use the ADC function, you need to attach the Edge-2L IO board.
Hardware Information
The ADC on the Edge-2L IO board is a 12-bit successive approximation register (SAR) A/D Converter.
| Pin | Voltage | Device Node |
|---|---|---|
| 9 | 0~1.8V | /sys/bus/iio/devices/iio:device0/in_voltage4_raw |
Get Raw ADC Value
$ cat /sys/bus/iio/devices/iio:device0/in_voltage4_raw
4082
Convert the raw ADC value to Voltage:
Voltage = (value / 4096) * 1.8V
Last modified: 2025/11/25 04:31 by gray