65 lines
1.7 KiB
Plaintext
65 lines
1.7 KiB
Plaintext
/*
|
|
* Copyright (c) 2024 Centro de Inovacao EDGE
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <zephyr/dt-bindings/adc/mcux-lpadc.h>
|
|
|
|
/ {
|
|
aliases {
|
|
adc0 = &adc0;
|
|
};
|
|
};
|
|
|
|
&adc0 {
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
|
|
/*
|
|
* To use this sample:
|
|
* - Connect VREFN_TARGET to GND, and VREFP_TARGET to 3v3
|
|
* (Resistors J8 and J9, should be populated by default)
|
|
* LPADC0 CH0A and CH0B are set up in differential mode
|
|
* - Connect LPADC0 CH0A signal to voltage between 0~3.3V (P19 pin 4)
|
|
* - Connect LPADC0 CH0B signal to voltage between 0~3.3V (P19 pin 2)
|
|
* LPADC0 CH4A is set up in single ended mode
|
|
* - Connect LPADC0 CH4A signal to voltage between 0~3.3V (P17 pin 19)
|
|
* LPADC0 CH4B is set up in single ended mode
|
|
* - Connect LPADC0 CH4B signal to voltage between 0~3.3V (P18 pin 1)
|
|
*/
|
|
|
|
/*
|
|
* Channel 0 is used for differential mode, with 13 bit resolution
|
|
* CH0A (plus side) is routed to P19 pin 4
|
|
* CH0B (minus side) is routed to P19 pin 2
|
|
*/
|
|
channel@0 {
|
|
reg = <0>;
|
|
zephyr,gain = "ADC_GAIN_1";
|
|
zephyr,reference = "ADC_REF_EXTERNAL0";
|
|
zephyr,vref-mv = <3300>;
|
|
zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
|
|
zephyr,input-positive = <MCUX_LPADC_CH0A>;
|
|
zephyr,input-negative = <MCUX_LPADC_CH0B>;
|
|
};
|
|
|
|
/*
|
|
* Channel 1 is used in single ended mode, with 16 bit resolution
|
|
* CH4A is routed to P17 pin 19
|
|
*/
|
|
channel@1 {
|
|
reg = <1>;
|
|
zephyr,gain = "ADC_GAIN_1";
|
|
zephyr,reference = "ADC_REF_EXTERNAL0";
|
|
zephyr,vref-mv = <3300>;
|
|
zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
|
|
zephyr,input-positive = <MCUX_LPADC_CH4A>;
|
|
};
|
|
|
|
/*
|
|
* Channel 2 is used in single ended mode, with 12 bit resolution
|
|
* CH4B is routed to P18 pin 1
|
|
*/
|
|
};
|