This example shows the MAC address on boards with WiFiNINA support

showmac.go

package main

import (
	"machine"
	"strconv"
	"time"

	"tinygo.org/x/drivers/wifinina"
)

var (
	spi = machine.NINA_SPI
	adaptor *wifinina.Device
)

func setup() {
	spi.Configure(machine.SPIConfig{
		Frequency: 8 * 1e6,
		SDO:       machine.NINA_SDO,
		SDI:       machine.NINA_SDI,
		SCK:       machine.NINA_SCK,
	})

	adaptor = wifinina.New(spi,
		machine.NINA_CS,
		machine.NINA_ACK,
		machine.NINA_GPIO0,
		machine.NINA_RESETN)
	adaptor.Configure()
}

func main() {
	setup()
	waitSerial()

	for {
		println("----------------------------------------")
		printMac()
		time.Sleep(10 * time.Second)
	}
}

func printMac() {
	print("MAC: ")
	mac, err := adaptor.GetMACAddress()
	if err != nil {
		println("Unknown (", err.Error(), ")")
	}
	println(mac.String())
}

// Wait for user to open serial console
func waitSerial() {
	for !machine.Serial.DTR() {
		time.Sleep(100 * time.Millisecond)
	}
}