ESP8266 Community Forum

HI guys,
I have an application for ESP8266 where I use two ways to change the state of GPIO - HTTP and MQTT. Because I'd like to know the status for better visualization I currently use global variable but it's very annoying that I need to make sure it's always updated where I change the state of the GPIO.
Do you think it's safe to read the state of this GPIO with function GPIO_INPUT_GET(PIN_GPIO) even though the pin is set to output? (in Arduino I know it's safe btw)
It would make life way more easy.

Thanks,
K.

No one with any idea? Please...

yes

Yes, you can read the state of an output in. The syntax depends on what you're programming in.

If you're using the NodeMCU firmware, check the wiki at https://github.com/nodemcu/nodemcu-firmware/wiki/nodemcu_api_en

If you're using AT commands you need the firmware that has GPIO support. I used it briefly, but moved on to the NodeMCU firmware with the LUA interpreter, and then to the Espressif SDK where you write your own firmware in C.