use analog pin as digital?

[jose1711@gmail.com]

hello,

is there any hope for analog pin (a0) on esp8266 to use as sda/scl pin and/or with irq?

thank you,

jose

[Roberthh]

No. You can use the analog pin as an slow digital input, in case you are low on ressources, including setting up a multi-position switch. Each reading takes about 100 µs. But you have to poll it, there is no interrupt associated.