boards: arm: mimxrt1040_evk: enable ADC support (77f8848f) · Commits · Wenxi XU / zephyr

boards/arm/mimxrt1040_evk/doc/index.rst

+6 −0

Changes for boards/arm/mimxrt1040_evk/doc/index.rst: 6 added lines, 0 removed lines.
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		@@ -93,6 +93,8 @@ already supported, which can also be re-used on this mimxrt1040_evk board:
		+-----------+------------+-------------------------------------+
		\| PWM \| on-chip \| pwm \|
		+-----------+------------+-------------------------------------+
		\| ADC \| on-chip \| adc \|
		+-----------+------------+-------------------------------------+

		The default configuration can be found in the defconfig file:

		@@ -118,6 +120,10 @@ The MIMXRT1040 SoC has five pairs of pinmux/gpio controllers.
		+---------------+-----------------+---------------------------+
		\| GPIO_AD_B0_10 \| FLEXPWM1 PWM3A \| PWM Output \|
		+---------------+-----------------+---------------------------+
		\| GPIO_AD_B0_14 \| ADC0 IN3 \| ADC0 Input \|
		+---------------+-----------------+---------------------------+
		\| GPIO_AD_B0_15 \| ADC0 IN4 \| ADC0 Input \|
		+---------------+-----------------+---------------------------+

		System Clock
		============

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Changes for boards/arm/mimxrt1040_evk/mimxrt1040_evk-pinctrl.dtsi: 11 added lines, 0 removed lines.
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		@@ -9,6 +9,17 @@
		#include <nxp/nxp_imx/rt/mimxrt1042xjm5b-pinctrl.dtsi>

		&pinctrl {
		/* Route ADC1 IN3 and IN4 to J33 pins 1 and 2 */
		pinmux_adc1: pinmux_adc1 {
		group0 {
		pinmux = <&iomuxc_gpio_ad_b0_14_adc1_in3>,
		<&iomuxc_gpio_ad_b0_15_adc1_in4>;
		drive-strength = "r0-6";
		slew-rate = "slow";
		nxp,speed = "100-mhz";
		};
		};

		/* Route PWM1 A3 to J16, pin 6 on arduino header */
		pinmux_flexpwm1_pwm3: pinmux_flexpwm1_pwm3 {
		group0 {

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Changes for boards/arm/mimxrt1040_evk/mimxrt1040_evk.dts: 6 added lines, 0 removed lines.
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		@@ -110,6 +110,12 @@
		pinctrl-names = "default";
		};

		&adc1 {
		status = "okay";
		pinctrl-0 = <&pinmux_adc1>;
		pinctrl-names = "default";
		};

		/* GPT and Systick are enabled. If power management is enabled, the GPT
		* timer will be used instead of systick, as allows the core clock to
		* be gated.

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0 → 100644

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Changes for samples/drivers/adc/boards/mimxrt1040_evk.overlay: 37 added lines, 0 removed lines.
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		/*
		* SPDX-License-Identifier: Apache-2.0
		*
		* Copyright 2023 NXP
		*/

		/ {
		zephyr,user {
		/* adjust channel number according to pinmux in board.dts */
		io-channels = <&adc1 3>, <&adc1 4>;
		};
		};

		&adc1 {
		#address-cells = <1>;
		#size-cells = <0>;

		/*
		* To use this sample connect
		* J33.1 (ADC1 CH3) and J33.2 (ADC1 CH4) to voltages between 0 and 3.3V
		*/
		channel@3 {
		reg = <3>;
		zephyr,gain = "ADC_GAIN_1";
		zephyr,reference = "ADC_REF_INTERNAL";
		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
		zephyr,resolution = <12>;
		};

		channel@4 {
		reg = <4>;
		zephyr,gain = "ADC_GAIN_1";
		zephyr,reference = "ADC_REF_INTERNAL";
		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
		zephyr,resolution = <12>;
		};
		};