Arduino interruption (on pin change) - Arduino Stack Exchange
Feb 20, 2015 · Our function will then call digitalRead() from libcore. digitalRead() will look into some tables in order to map the Arduino port number to the hardware I/O port it has to read …
How to toggle a pin (LED) simply - Arduino Stack Exchange
May 24, 2022 · When you google for "Arduino toggle pin" you will get good results. When doing it the Arduino way it would be: digitalWrite(pinToToggle, !digitalRead(pinToToggle));
digital - digitalRead keeps giving 1 - Arduino Stack Exchange
I am new to arduino programming and I have bought arduino UNO a few days ago. I am trying to read the value of pin 4 using digitalRead with pinMode INPUT_PULLUP but it keeps giving me …
digitalRead() function of Arduino doesn't read Input value sent by ...
Mar 6, 2021 · digitalRead () function of Arduino doesn't read Input value sent by sensor after detecting the object Ask Question Asked 4 years, 10 months ago Modified 4 years, 10 months …
At what frequency/rate does the digitalRead function read an input?
Jan 23, 2017 · Ack -- digitalRead(buttonPin) gives a 1 or 0, while PORTB & _BV(buttonPin) could give you 0,1,2,4,8,16,32,64,128 depending on the state of the pin and which pin on the port …
Multiple if statement conditions - Arduino Stack Exchange
Jul 16, 2015 · uint8_t value = digitalRead(x) | (digitalRead(y) << 1) | (digitalRead(z) << 2); x is the least significant bit, and z is the most significant. So value will now be a value between 0 and 7 …
Read status of digital pin 11, when it is set as OUTPUT
Mar 31, 2023 · I have set pin 11 as output. pinMode (11, OUTPUT); However, I want to be able to read its state (if it is HIGH or LOW), however since it is set as OUTPUT, I am not able to use …
Using analog in to read a push button - Arduino Stack Exchange
Feb 12, 2017 · Is it possible to read the value of the switch in the analog in pins on the board?? As other answers say, you can use digitalRead on most Analogue pins. But to answer the …
arduino uno - if/else on digitalRead not executing on 'else' portion ...
if/else on digitalRead not executing on 'else' portion Ask Question Asked 6 years, 10 months ago Modified 6 years, 10 months ago
arduino uno - read state from button to check if clicked - Arduino ...
Apr 10, 2020 · As you are a beginner, you seem to have some misconceptions: Reading button state with digitalRead(): You thought something is wrong, because you thought that …