nordic,nrf-comp

Overview

Name:

nordic,nrf-comp

Vendor:

Nordic Semiconductor

Used in:

List of boards using this compatible

Driver:

drivers/comparator/comparator_nrf_comp.c

Description

Nordic nRF COMP (analog COMParator)

This comparator has varying configurations which require varying properties be set in the
devicetree. Enabling the comparator node requires setting the default configuration of the
comparator.

Examples

/*
 * The following example displays the minimum node layout:
 */
comp: comp@deadbeef {
        compatible = "nordic,nrf-comp";
        reg = <0xdeadbeef 0x1000>;
        interrupts = <0 NRF_DEFAULT_IRQ_PRIORITY>;
        status = "disabled";
};

---

/*
 * The following example displays enabling the comparator in
 * single-ended mode, selecting an internal reference:
 */
&comp {
        status = "okay";
        main-mode = "SE";
        psel = <NRF_COMP_AIN0>;
        refsel = "INT_1V2";
        sp-mode = "NORMAL";
        th-up = <36>;
        th-down = <30>;
        isource = "DISABLED";
};

---

/*
 * To select an external reference, select the "AREF"
 * reference and add the external reference:
 */
&comp {
        ...
        refsel = "AREF";
        extrefsel = <NRF_COMP_AIN1>;
        ...
};

---

/*
 * The following example displays enabling the comparator
 * in differential mode:
 */
&comp {
        status = "okay";
        main-mode = "DIFF";
        psel = <NRF_COMP_AIN0>;
        extrefsel = <NRF_COMP_AIN1>;
        sp-mode = "NORMAL";
        enable-hyst;
        isource = "DISABLED";
};

Properties

Node specific propertiesDeprecated node specific propertiesBase properties

Properties not inherited from the base binding file.

Name	Type	Details
main-mode	string	Legal values: SE, DIFF
psel	int
extrefsel	int
refsel	string	Legal values: INT_1V2, INT_1V8, INT_2V4, AVDDAO1V8, VDD, AREF
enable-hyst	boolean
sp-mode	string	Legal values: LOW, NORMAL, HIGH
th-up	int
th-down	int
isource	string	Legal values: DISABLED, 2UA5, 5UA, 10UA