微處理器 - Espressif ESP8266MOD (NodeMCU ESP8266) - Arduino - LED

參考資訊：
https://arduino.github.io/arduino-cli/0.31/installation/
https://sites.google.com/site/arduinochutiyan/home/nodemcu/arduino-%E7%92%B0%E5%A2%83%E5%BB%BA%E7%BD%AE-%E5%AE%89%E8%A3%9Desp8266%E9%96%8B%E7%99%BC%E6%9D%BF

步驟如下：
1. 連接板子到PC
2. 執行如下命令

$ cd
$ arduino-cli sketch new blink
$ vim blink/blink.ino

#define LED 16

void setup() {
    pinMode(LED, OUTPUT);
}
 
void loop() {
    digitalWrite(LED, HIGH);
    delay(1000);
    digitalWrite(LED, LOW);
    delay(1000);
}

$ arduino-cli compile --fqbn esp8266:esp8266:nodemcuv2 blink
$ arduino-cli board list
    Port         Protocol Type              Board Name FQBN Core
    /dev/ttyUSB0 serial   Serial Port (USB) Unknown

$ arduino-cli upload --port /dev/ttyUSB0 --fqbn esp8266:esp8266:nodemcuv2 blink
    esptool.py v3.0
    Serial port /dev/ttyUSB0
    Connecting....
    Chip is ESP8266EX
    Features: WiFi
    Crystal is 26MHz
    MAC: 2c:3a:e8:10:dc:82
    Uploading stub...
    Running stub...
    Stub running...
    Configuring flash size...
    Auto-detected Flash size: 4MB
    Compressed 265616 bytes to 195725...
    Writing at 0x00000000... (8 %)
    Writing at 0x00004000... (16 %)
    Writing at 0x00008000... (25 %)
    Writing at 0x0000c000... (33 %)
    Writing at 0x00010000... (41 %)
    Writing at 0x00014000... (50 %)
    Writing at 0x00018000... (58 %)
    Writing at 0x0001c000... (66 %)
    Writing at 0x00020000... (75 %)
    Writing at 0x00024000... (83 %)
    Writing at 0x00028000... (91 %)
    Writing at 0x0002c000... (100 %)
    Wrote 265616 bytes (195725 compressed) at 0x00000000 in 17.2 seconds (effective 123.7 kbit/s)...
    Hash of data verified.

    Leaving...
    Hard resetting via RTS pin...

    New upload port: /dev/ttyUSB0 (serial)

完成