feat: 全量同步 254 个常用的 Arduino 扩展库文件

arduino-libs/arduino-cli/libraries/Adafruit_MCP23017/README.md

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+This is a library for the MCP23017 I2c Port Expander
+ 
+These chips use I2C to communicate, 2 pins required to interface
+
+Adafruit invests time and resources providing this open source code, 
+please support Adafruit and open-source hardware by purchasing 
+products from Adafruit!
+
+Written by Limor Fried/Ladyada  for Adafruit Industries.  
+BSD license, check license.txt for more information
+All text above must be included in any redistribution
+
+To download. click the DOWNLOADS button in the top right corner, rename the uncompressed folder Adafruit_MCP23017. Check that the Adafruit_MCP23017 folder contains Adafruit_MCP23017.cpp and Adafruit_MCP23017.h
+
+Place the Adafruit_MCP23017 library folder your <arduinosketchfolder>/libraries/ folder. You may need to create the libraries subfolder if its your first library. Restart the IDE.
+
+Pin Addressing
+==============
+
+When using single pin operations such as _pinMode(pinId, dir)_ or _digitalRead(pinId)_  or _digitalWrite(pinId, val)_ then the pins are addressed using the ID's below. For example, for set the mode of _GPB0_ then use _pinMode(8, ...)_.
+
+Physial Pin #| Pin Name | Pin ID
+----|------|------------------------------
+21 | GPA0 | 0
+22 | GPA1 | 1
+23 | GPA2 | 2
+24 | GPA3 | 3
+25 | GPA4 | 4
+26 | GPA5 | 5
+27 | GPA6 | 6
+28 | GPA7 | 7
+1 | GPB0 |  8
+2 | GPB1 |  9
+3 | GPB2 | 10
+4 | GPB3 | 11
+5 | GPB4 | 12
+6 | GPB5 | 13
+7 | GPB6 | 14
+8 | GPB7 | 15