User Tools
Sidebar
products:sbc:edge2:applications:gpio:adc
This is an old revision of the document!
Table of Contents
Edge2 ADC
Introduction
The previous part of this page introduces ADC related information.The second part guides you to obtain ADC conversion values.
For Edge2, in order to use the ADC function, you need to attach the IO extension board.
ADC Information
The ADC is an 12-bit Successive Approximation Register (SAR) A/D Converter.
| ADC | PIN | GPIO Name | |
|---|---|---|---|
| Edge2 | ADC_CH2 | 9 | SARADC_IN4 |
ADC conversion
Use the following command to view the device node and read the ADC conversion value.
$ cd && ls /sys/bus/iio/devices/iio:device0 buffer in_voltage2_raw in_voltage6_raw of_node trigger dev in_voltage3_raw in_voltage7_raw power uevent in_voltage0_raw in_voltage4_raw in_voltage_scale scan_elements in_voltage1_raw in_voltage5_raw name subsystem $ cat /sys/bus/iio/devices/iio:device0/in_voltage4_raw 1
Last modified: 2022/12/06 03:49 by nick