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Q: How do I flash the program into the chip?

Posted: Tue Jul 28, 2015 1:06 pm
by ESP_Luna
Q: How do I flash the program into the chip?
  • 3.3V Power supply is needed and it’s generally required that the output current of external power supply be 500 mA and above.
  • Pull the chip-enable pin high.
  • Configure ESP8266 in UART Download Boot mode: MTDO->0, GPIO0->0, GPIO2->1.
  • Connect GND, U0RXD and U0TXD to PC via serial ports. Then use Flash Download Tool to download the firmware.
    Please note while downloading it:
    1.Choose CrystalFreq(26MHz/40MHz/24MHz) based on the model of crystal vibration that is actually used.
    2.Choose SPI mode(QIO/QOUT/DIO/DOUT) based on the flash that is actually used.
    3.Choose flash size based on that configured in the actual compilation process.
  • When the download is complete, switch ESP8266 to flash boot mode, namely, MTDO->0, GPIO0->1, GPIO2->1.
  • Check the log or make instructions via serial debugging tools.