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I am setting up a page on NodeMCU running as a web server and I want to be able to turn on and off a light based on the url being clicked.

I want to know how I can get the status so that I can set the URL based on the pin status as well as pass the GPIO pin status in the JSON from the NodeMCU web server.

The code is here.

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Ciasto piekarz
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1 Answers1

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Independent of the setting of port direction (input or output), pin can be read through the digitalRead():

int pin_light = 3;
int status = digitalRead(pin_light);
caligari
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  • The OP said he has a NodeMCU board. Those runs Lua code. Your example seems to be C-code and would not work on a NodeMCU unless you "reflash" it to standard Arduino C-code. Reading a pin on NodeMCU should be gpio.read(PIN) – Daniele Testa Sep 15 '18 at 06:27
  • The OP said he has a NodeMCU board. Those runs Lua code. Your example seems to be C-code and would not work on a NodeMCU unless you "reflash" it to standard Arduino C-code. Reading a pin on NodeMCU should be gpio.read(PIN) – Daniele Testa Sep 15 '18 at 06:28
  • You are rigth, but question refers an example with code and C and it is tagged with C :blink: – caligari Sep 16 '18 at 11:01