| /* |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Copyright 2022-2023 NXP |
| */ |
| |
| #include <zephyr/dt-bindings/adc/mcux-lpadc.h> |
| |
| / { |
| zephyr,user { |
| io-channels = <&adc0 0 &adc0 1 &adc0 2>; |
| }; |
| }; |
| |
| &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,resolution = <13>; |
| 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,resolution = <16>; |
| 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 |
| */ |
| channel@2 { |
| reg = <2>; |
| zephyr,gain = "ADC_GAIN_1"; |
| zephyr,reference = "ADC_REF_EXTERNAL0"; |
| zephyr,vref-mv = <3300>; |
| zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>; |
| zephyr,resolution = <12>; |
| zephyr,input-positive = <MCUX_LPADC_CH4B>; |
| }; |
| }; |
