[esp8266]micropython相关资料和教学

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[esp8266]micropython相关资料和教学

在命令行安装esptool

1. pip3 install esptool

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esp8266 micropython固件官方下载页

1. http://micropython.org/download/esp8266/

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命令行下查看usb ttl设备的

1. ls /dev/tty.*

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输出:

1. crw-rw-rw-  1 root  wheel   18,   4 Jul 20 22:24 /dev/tty.Bluetooth-Incoming-Port
   
2. crw-rw-rw-  1 root  wheel   18,  12 Jul 21 20:27 /dev/tty.usbserial-1420
   
3. crw-rw-rw-  1 root  wheel   18,  10 Jul 21 20:27 /dev/tty.wchusbserial1420

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我这个是ch34xx,所以选/dev/tty.wchusbserial1420

esptool在mac的路径如下,因为如果你安装完esptool后直接按网上的教程刷固件会提示没有esptool

1. /Users/user/Library/Arduino15/packages/esp8266/hardware/esp8266/2.7.2/tools/esptool/esptool.py
   
2. /Users/user/PycharmProjects/app/venv/bin/esptool.py
   
3. /Users/user/PycharmProjects/app/venv/lib/python3.8/site-packages/esptool.py

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哪里你可以用

1. /Users/user/PycharmProjects/app/venv/bin/esptool.py --port /dev/tty.wchusbserial1420 erase_flash

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这样来对esp设备刷固件或者直接用这个命令解决找不到程序的问题.

1. export PATH=$PATH:/Users/user/PycharmProjects/app/venv/bin/

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这是mac的命令,按自己的情况修改自己的路径.

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擦除ESP8266 flash的命令:

1. esptool.py --port /dev/ttyUSB0 erase_flash

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输出:

1. esptool.py v2.8
   
2. Serial port /dev/tty.wchusbserial1420
   
3. Connecting....
   
4. Detecting chip type... ESP8266
   
5. Chip is ESP8266EX
   
6. Features: WiFi
   
7. Crystal is 26MHz
   
8. MAC: e0:b5:d1:45:56:3e
   
9. Uploading stub...
   
10. Running stub...
    
11. Stub running...
    
12. Erasing flash (this may take a while)...
    
13. Chip erase completed successfully in 13.6s
    
14. Hard resetting via RTS pin...
    

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刷入固件命令:

1. esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=detect 0 esp8266-20170108-v1.8.7.bin

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输出:

1. esptool.py v2.8
   
2. Serial port /dev/tty.wchusbserial1420
   
3. Connecting....
   
4. Detecting chip type... ESP8266
   
5. Chip is ESP8266EX
   
6. Features: WiFi
   
7. Crystal is 26MHz
   
8. MAC: e0:b5:d1:45:56:3e
   
9. Uploading stub...
   
10. Running stub...
    
11. Stub running...
    
12. Changing baud rate to 460800
    
13. Changed.
    
14. Configuring flash size...
    
15. Auto-detected Flash size: 4MB
    
16. Flash params set to 0x0040
    
17. Compressed 619828 bytes to 404070...
    
18. Wrote 619828 bytes (404070 compressed) at 0x00000000 in 9.7 seconds (effective 513.8 kbit/s)...
    
19. Hash of data verified.
    
20. 
    
21. Leaving...
    
22. Hard resetting via RTS pin...
    

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活力数据

编写micropython,大部分跟python一样写法. 发地么要用什么软件连上开始编写呢?可以用macos的命令行里面的一个软件. minicom.

安装minicom,在命令行用指令:

1. brew install minicom

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设置minicom

1. minicom -s

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如果设置bitrate,usb device.
bitrate一般默认是115200

然后就可以用minicom连上去开始编写了.

活力数据

nodemcu esp8266 LED on off
我测试的跟这个图所标的不一样.
GPIO2  ---> 4
GPIO16 ---> 0