This is the setup function where the serial port is initialised attachInterrupt(0, rpm, RISING);
and the interrupt is attached
the loop() method runs over and over again // as long as the Arduino has power
RISING: The current changes from off to on at 5 V.
To configure interrupts, use the following in void setup():
Here, 0 is for digital pin 2, 1 is for digital pin 3, function is the name of the function to call when the interrupt is triggered, and mode is one of the four modes that triggers the interrupt.
attachInterrup
This is the setup function where the serial port is initialised attachInterrupt(0, rpm, RISING);and the interrupt is attached the loop() method runs over and over again // as long as the Arduino has power RISING: The current changes from off to on at 5 V.To configure interrupts, use the following in void setup():Here, 0 is for digital pin 2, 1 is for digital pin 3, function is the name of the function to call when the interrupt is triggered, and mode is one of the four modes that triggers the interrupt. attachInterrup
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