This is the project content:

• Programmer flashed with DAPLink and some hardware examples
• In the computer it is used pyOCD

The steps of the project are:

• Learn how to flash the board with DAPLink DONE
• Learn how to debug it with DAPLink DONE
• Flash Zephyr project into the board with blink LED DONE
• Flash and run arduino on Zephyr DONE
• Make I2S work on Zephyr
• Make I2S work on Zephyr arduino

Flashing using DAPLink

I bought a DAPLink long time ago and I wanted to try. And it works!

The steps I did was:

• Install pyocd
• Make sure that the permissions are right for the usb device
• Be able to discover it with pyocd --list
• Make the connections for tck, tms, gnd and 3v3 into the jtag connector. 3v3 into jtag_pwr.
• Then run the next command

pyocd flash -t mimxrt1060 /home/lilo-ubuntu/Documents/MCUXpresso_25.6.136/workspace/evkbmimxrt1060_iled_blinky/Debug/evkbmimxrt1060_iled_blinky.axf -u 202108120001

Building and running zephyr blink example

I followed the guide on the official documentation. And add the next commands:

west build -p always -b mimxrt1060_evk/mimxrt1062/qspi samples/basic/blinky
west flash --runner pyocd

Running zephy blinky from other folder

Then I did the next:

mkdir -p ~/zephyr_apps
cp -r ~/zephyrproject/zephyr/samples/basic/blinky ~/zephyr_apps/my_blinky
cd zephyr_apps/my_blinky/
export ZEPHYR_BASE=~/zephyrproject/zephyr
west build -b mimxrt1060_evk/mimxrt1062/qspi
west flash --runner pyocd

Running zephyr Arduino core

I have done an example that works. I placed it in my folder. But basically is follow the documentation, and use the definitions from zephyrproject/zephyr/boards/nxp/mimxrt1060_evk/mimxrt1060_evk.dtsi

My overlay looks like:

#include <zephyr/dt-bindings/gpio/gpio.h>
#include <zephyr/dt-bindings/adc/adc.h>

/ {
	zephyr,user {
		digital-pin-gpios = <&arduino_header 6 0>,	/* Digital 0 */
				    <&arduino_header 7 0>,
				    <&arduino_header 8 0>,
				    <&arduino_header 9 0>,
				    <&arduino_header 10 0>,	/* Digital 4 - use default mapping */
				    <&arduino_header 11 0>,
				    <&arduino_header 12 0>,
				    <&arduino_header 13 0>,
				    <&arduino_header 14 0>,
				    <&arduino_header 15 0>,
				    <&arduino_header 16 0>,	/* Digital 10 */
				    <&arduino_header 17 0>,
				    <&arduino_header 18 0>,
				    <&gpio1 8 GPIO_ACTIVE_HIGH>,	/* Digital 13 - Built-in LED (GPIO1.8) */
				    <&arduino_header 0 0>,	/* Analog A0 */
				    <&arduino_header 1 0>,	/* Analog A1 */
				    <&arduino_header 2 0>,	/* Analog A2 */
				    <&arduino_header 3 0>,	/* Analog A3 */
				    <&arduino_header 4 0>,	/* Analog A4 */
				    <&arduino_header 5 0>;	/* Analog A5 */

		pwm-pin-gpios =     <&arduino_header 9 0>,
				    <&arduino_header 11 0>,
				    <&arduino_header 12 0>,
				    <&arduino_header 15 0>,
				    <&arduino_header 16 0>,
				    <&arduino_header 17 0>;

		adc-pin-gpios =	    <&arduino_header 0 0>,
				    <&arduino_header 1 0>,
				    <&arduino_header 2 0>,
				    <&arduino_header 3 0>,
				    <&arduino_header 4 0>,
				    <&arduino_header 5 0>;

		io-channels =	    <&adc1 0>,
				    <&adc1 1>,
				    <&adc1 2>,
				    <&adc1 3>,
				    <&adc1 4>,
				    <&adc1 5>;
	};
};

/* Enable ADC for analog pins */
&adc1 {
	status = "okay";
	pinctrl-0 = <&pinmux_adc1>;
	pinctrl-names = "default";
	
	#address-cells = <1>;
	#size-cells = <0>;

	channel@0 {
		reg = <0>;
		zephyr,gain = "ADC_GAIN_1";
		zephyr,reference = "ADC_REF_INTERNAL";
		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
		zephyr,resolution = <12>;
		zephyr,input-positive = <0>;
	};

	channel@1 {
		reg = <1>;
		zephyr,gain = "ADC_GAIN_1";
		zephyr,reference = "ADC_REF_INTERNAL";
		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
		zephyr,resolution = <12>;
		zephyr,input-positive = <1>;
	};

	channel@2 {
		reg = <2>;
		zephyr,gain = "ADC_GAIN_1";
		zephyr,reference = "ADC_REF_INTERNAL";
		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
		zephyr,resolution = <12>;
		zephyr,input-positive = <2>;
	};

	channel@3 {
		reg = <3>;
		zephyr,gain = "ADC_GAIN_1";
		zephyr,reference = "ADC_REF_INTERNAL";
		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
		zephyr,resolution = <12>;
		zephyr,input-positive = <3>;
	};

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

	channel@5 {
		reg = <5>;
		zephyr,gain = "ADC_GAIN_1";
		zephyr,reference = "ADC_REF_INTERNAL";
		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
		zephyr,resolution = <12>;
		zephyr,input-positive = <5>;
	};

cmake_minimum_required(VERSION 3.20)

# Add this line to tell Zephyr where the Arduino module is
list(APPEND ZEPHYR_EXTRA_MODULES $ENV{HOME}/zephyrproject/modules/lib/arduino-core-zephyr)

# Add the device tree overlay for Arduino support
set(DTC_OVERLAY_FILE "mimxrt1060_evk_arduino.overlay")

find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
project(arduino_blinky)

target_sources(app PRIVATE arduino_sketch.cpp)