Herman Van twillert asked 3 years ago
Hello
On my ESP8266 board I would like to (or rather, I have to) map the I2C pins to other pins like e.g.GPIO3 and GPIO1. These pins are by default RXD0 and TXD0.
I would like to use the wire.begin instruction. Is this possibe or does it interfer with other functions?
Sara Santos Staff answered 3 years ago
Hi.
I would not use those pins as I2C because those pins are used to put the ESP8266 in boot mode so that you’re able to upload new code and then, access the Serial Monitor.
I think you’ll have problems if using those pins as I2C.
I recommend taking a look at the ESP8266 pinout here: https://randomnerdtutorials.com/esp8266-pinout-reference-gpios/
Regards,
Sara
Herman Van twillert answered 3 years ago
nu other recommandation? As I can not use the D1 D2 pins unfortunately
Sara Santos Staff answered 3 years ago
What ESP8266 board model are you using? GPIO 13 (D7) and GPIO 12(D6) seem a good option.
Herman Van twillert answered 3 years ago
ahhh GPIO13 is free but GPIO12 is not, so one short.
Could one of the SDDxx pins do??