ESP8266 Community Forum

- Wed Sep 09, 2015 9:19 pm #28760 Guys, take the benefits of the Adafruit_MCP23017 library instead of doing complex native I2C code ...

- Thu Sep 10, 2015 3:18 am #28770

Guys, take the benefits of the Adafruit_MCP23017 library instead of doing complex native I2C code ...

I have used that library as you had suggested and DO agree that it is an easier way to go but I don't see any way to turn on multiple LED's at one time. Maybe I'll go back and have another look.

- Thu Sep 10, 2015 8:48 am #28788

but I don't see any way to turn on multiple LED's at one time.

Code: Select allvoid Adafruit_MCP23017::writeGPIOAB(uint16_t ba) {


- Fri Sep 11, 2015 2:20 pm #28870

but I don't see any way to turn on multiple LED's at one time.

Code: Select allvoid Adafruit_MCP23017::writeGPIOAB(uint16_t ba) {


Ok I did see that somewhere in the AdaFruit library but have no clue what it means. I was also searching the AdaFruit site for information on that and how to use it, nothing concrete that I could figure out. I'll just keep looking.

Thanks