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samples: drivers/adc: Support adc example for NXP frdm_mcxn236

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Support adc example for NXP frdm_mcxn236

Signed-off-by: Neil Chen <cheng.chen_1@nxp.com>
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Neil Chen 2024-10-12 14:00:27 +08:00 committed by Henrik Brix Andersen
parent 0ffe2f0006
commit 2c6f993098
1 changed files with 50 additions and 0 deletions
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samples/drivers/adc/adc_dt/boards/frdm_mcxn236.overlay Normal file
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/*
* Copyright 2024 NXP
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/dt-bindings/adc/adc.h>
#include <zephyr/dt-bindings/adc/mcux-lpadc.h>
/ {
zephyr,user {
/* adjust channel number according to pinmux in board.dts */
io-channels = <&lpadc0 0>, <&lpadc0 1>;
};
};
&lpadc0 {
#address-cells = <1>;
#size-cells = <0>;
/*
* To use this sample:
* LPADC0 CH1A and CH1B are set up in differential mode (B-A)
* - Connect LPADC0 CH1A signal to voltage between 0~1.8V (J4 pin 4)
* - Connect LPADC0 CH1B signal to voltage between 0~1.8V (J8 pin 11)
* LPADC0 CH2A is set up in single ended mode
* - Connect LPADC0 CH2A signal to voltage between 0~1.8V (J8 pin 12)
*/
channel@0 {
reg = <0>;
zephyr,gain = "ADC_GAIN_1";
zephyr,reference = "ADC_REF_EXTERNAL1";
zephyr,vref-mv = <1800>;
zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
zephyr,resolution = <13>;
zephyr,input-positive = <MCUX_LPADC_CH1B>;
zephyr,input-negative = <MCUX_LPADC_CH1A>;
};
channel@1 {
reg = <1>;
zephyr,gain = "ADC_GAIN_1";
zephyr,reference = "ADC_REF_EXTERNAL1";
zephyr,vref-mv = <1800>;
zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
zephyr,resolution = <12>;
zephyr,input-positive = <MCUX_LPADC_CH2A>;
};
};