SAADC + TIMER (SAADCT) driver

The SAADCT driver provides timer-triggered SAADC sampling on Nordic nRF devices. An external TIMER instance triggers the SAADC sample task through GPPI at a configured rate. Measurement results are delivered as series of interleaved channel samples stored in memory slabs. For an example of how to use the driver, see the SAADC + TIMER (SAADCT) sample.

Configuration

Enable the driver with the CONFIG_SAADCT Kconfig option.

To use the driver, define an SAADCT instance in the devicetree and point its timer-instance property to the TIMER that triggers SAADC sampling:

&timer20 {
        prescaler = <1>;
        status = "okay";
};

&adc {
        compatible = "nordic,nrf-saadct";
        status = "okay";
        timer-instance = <&timer20>;
};

API documentation

Header file: include/drivers/saadct.h

Source file: drivers/saadct/saadct_nrfx.c

SAADC + TIMER (SAADCT)