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samples: drivers: adc: add support for RT595

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Add support for RT595 evk to adc driver sample. RT595 uses external
reference voltage, which is set to 1.8V on this board.

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
This commit is contained in:
Daniel DeGrasse 2022-12-09 11:03:21 -06:00 • committed by Carles Cufí
commit 64ff9aa4d2
1 changed files with 43 additions and 0 deletions
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samples/drivers/adc/boards/mimxrt595_evk_cm33.overlay Normal file
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/*
* SPDX-License-Identifier: Apache-2.0
*
* Copyright (c) 2020 Linaro Limited
*/
#include <zephyr/dt-bindings/adc/adc.h>
/ {
zephyr,user {
/* adjust channel number according to pinmux in board.dts */
io-channels = <&lpadc0 0>, <&lpadc0 2>;
};
};
&lpadc0 {
#address-cells = <1>;
#size-cells = <0>;
/*
* To use this sample:
* - Connect LPADC0 CH0 signal to voltage between 0~1.8V (J30 pin 1)
* - Connect LPADC0 CH2 signal to voltage between 0~1.8V (J30 pin 3)
*/
channel@0 {
reg = <0>;
zephyr,gain = "ADC_GAIN_1";
zephyr,reference = "ADC_REF_EXTERNAL0";
zephyr,vref-mv = <1800>;
zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
zephyr,resolution = <12>;
};
channel@2 {
reg = <2>;
zephyr,gain = "ADC_GAIN_1";
zephyr,reference = "ADC_REF_EXTERNAL0";
zephyr,vref-mv = <1800>;
zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
zephyr,resolution = <12>;
};
};