Connect to WiFi given ssid and password
#include <ESP8266WiFi.h>
// Edit "secret" ssid and password below
const char* ssid = "secret";
const char* password = "secret";
void setup() {
  pinMode(2, OUTPUT);  // GPIO02 on ESP-12 module is linked to on-board LED
  Serial.begin(115200);
  delay(10);
  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  pinMode(LED_BUILTIN, OUTPUT);
}
void loop() {
  digitalWrite(2, HIGH);
  Serial.println(WiFi.localIP());
  delay(1000);
  digitalWrite(2, LOW);
  delay(1000);
}.PHONY: lint compile upload clean
lint:
	cpplint --extensions=ino --filter=-legal/copyright *.ino
compile:
	arduino-cli compile --fqbn esp8266com:esp8266:d1_mini ./
upload:
	arduino-cli upload -p /dev/cu.wchusbserial1410 --fqbn esp8266com:esp8266:d1_mini ./
clean:
	rm -f .*.bin
	rm -f .*.elf
flash: lint compile upload clean