用 esptool.py 燒錄 MicroPython v1.8 韌體到 D1 mini 開發板

昨天在零件箱找到兩片我最早買的 D1 mini 開發板, 此板為 ESP8266EX SoC 搭載 4M Bytes, 我以前都使用 ESP8266Flasher.exe 這軟體來燒錄 MicroPython 映像檔, 參考 :

# WeMOS D1 Mini 開發板測試

前陣子曾用 esptool.py 燒錄過跟 NodeMCU 很像的 Wemos ESP8266 開發板, 但還沒用它來燒錄 D1 mini, 兩者差別是 Wemos ESP8266 有 Flash 按鈕, 燒錄前要按住, 燒錄開始後可放開, 參考 : 

# 用 esptool.py 燒錄 MicroPython 韌體 (ESP8266/ESP32)

D1 mini 沒有 Flash 按鈕 (板上只有一個 Reset 鈕), 用 esptool.py 查詢或燒錄前要用一條杜邦線將 D4 (GPIO0) 腳接地, 燒錄完再移除 :

將 D4 接地後開啟命令提示字元視窗, 切換到映像檔所在資料夾 : 

C:\Users\User>d:

D:\>cd esp8266

1. 查詢 D1 mini 的 Flash 大小 : 

D:\ESP8266>esptool.py --port COM8 flash_id     

esptool.py v2.6

Serial port COM8

Connecting....

Detecting chip type... ESP8266

Chip is ESP8266EX   

Features: WiFi

MAC: 60:01:94:23:b4:b6

Uploading stub...

Running stub...

Stub running...

Manufacturer: c8

Device: 4016

Detected flash size: 4MB

Hard resetting via RTS pin...

2. 抹除 Flash 記憶體內容 : 

D:\ESP8266>esptool.py --chip esp8266 --port COM8 erase_flash     

esptool.py v2.6

Serial port COM8

Connecting....

Chip is ESP8266EX

Features: WiFi

MAC: 60:01:94:23:b4:b6

Uploading stub...

Running stub...

Stub running...

Erasing flash (this may take a while)...

Chip erase completed successfully in 6.0s

Hard resetting via RTS pin...

3. 燒錄 MicroPython 韌體 (v1.18 版) : 

D:\ESP8266>esptool.py --port COM8 --baud 115200 write_flash --flash_size=detect -fm dio 0 esp8266-20220117-v1.18.bin

esptool.py v2.6

Serial port COM8

Connecting....

Detecting chip type... ESP8266

Chip is ESP8266EX

Features: WiFi

MAC: 60:01:94:23:b4:b6

Uploading stub...

Running stub...

Stub running...

Configuring flash size...

Auto-detected Flash size: 4MB

Flash params set to 0x0240

Compressed 635992 bytes to 418428...

Wrote 635992 bytes (418428 compressed) at 0x00000000 in 36.7 seconds (effective 138.5 kbit/s)...

Hash of data verified.

Leaving...

Hard resetting via RTS pin...

D:\ESP8266>

這樣就成功燒錄映像檔了, 拔除 D4 接腳的接地線, 用 Putty 連線 D1 mini 所在 COM 埠, 按 Reset 鈕或 Ctrl + B (可能要兩次) 即可看到 MicroPython REPL 介面了 : 

MicroPython v1.18 on 2022-01-17; ESP module with ESP8266

Type "help()" for more information.

>>> print('Hello World!')    

Hello World!

>>>