ESP8266产品ID

ESP.getChipId()

　　

https://github.com/espressif/arduino-esp32/blob/master/libraries/ESP32/examples/ChipID/GetChipID/GetChipID.ino

uint64_t chipid; void setup() { Serial.begin(115200); } void loop() { chipid=ESP.getEfuseMac();//The chip ID is essentially its MAC address(length: 6 bytes). Serial.printf('ESP32 Chip ID = %04X',(uint16_t)(chipid>>32));//print High 2 bytes Serial.printf('%08X ',(uint32_t)chipid);//print Low 4bytes. delay(3000); }