DESK-RZ-L/Peripherals/ADC
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| 2025/12/16 | DESK-RZ-L-1.x.x release | ||
Contents
Peripheral ADC[edit | edit source]
Configuration[edit | edit source]
These peripheral(s) can only be used with the following ConfigID(s) (see the associated BOM):
| ConfigID | Note |
|---|---|
| 2002 | - |
| 2003 | - |
Device tree configuration[edit | edit source]
Below is an example of a device tree configuration used on a standard DAVE kit for the DSAB EVK.
From rzt2h-eb23-cb2002.dts:
...
&adc2 {
status = "okay";
};
...
Accessing the peripheral[edit | edit source]
In the ZERO SOM SoC there is a specific bank adc2 for ADCs. This bank has 14 channels, but only 2 are routed on the carrier board to analog potentiometers:
- Potentiometer A →
/sys/bus/platform/drivers/rzt2h-adc/80008000.adc2/iio\:device0/in_voltage4_raw - Potentiometer B →
/sys/bus/platform/drivers/rzt2h-adc/80008000.adc2/iio\:device0/in_voltage5_raw
Linux[edit | edit source]
... root@desk-t2h-usd-devel:~# cat /sys/bus/platform/drivers/rzt2h-adc/80008000.adc2/iio\:device0/in_voltage4_raw 20 root@desk-t2h-usd-devel:~# cat /sys/bus/platform/drivers/rzt2h-adc/80008000.adc2/iio\:device0/in_voltage5_raw 4073 ...
