ESP8266 gateway with I2C port expander
-
Hello everyone,
I have a gateway with the ESP8266 according the MySensors example. I was bothered that I don't have enough IO pins to connect the standard leds and the inclusion mode button. Therefore I used a PCF8574 I2C bus IO expander, so I have 8 additional pins available to connect leds or buttons. Instead of the MY_DEFAULT_XXX_LED_PIN defines I used the MY_INDICATION_HANDLER option and connected it to the PCF8574 I2C bus IO expander.
Unfortunately this does not work for the pins of the inclusion mode. Therefore I added the option MY_INCLUSION_INDICATION_HANDLER for a custom handler in the MySensorsLibrary. For this I made the pull request #1483.
To demonstrate the usage I provided an Example Project . I added it as an extension to MySensorsArduinoExamples and it is located in the dev_maxwa_InclusionExample branch under the MyWemosGatewayWire example folder.
I would be happy if the example is interesting and useful.
Hello! It looks like you're interested in this conversation, but you don't have an account yet.
Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.
With your input, this post could be even better 💗
Register Login