How does raspberry pie control LED through RPIO?
This article is about how raspberry pie controls LED through RPIO buttons. The editor thinks it is very practical, so I share it with you. I hope you can get something after reading this article. Let's take a look at it.
1. Wiring diagram
2. Code: led.js
Const rpio = require ("/ home/pi/.nvm/versions/node/v10.15.3/lib/node_modules/rpio/lib/rpio")
Var pin = 32
Var pin1=37
Rpio.open (pin, rpio.OUTPUT, rpio.LOW)
Rpio.open (pin1, rpio.INPUT, rpio.PULL_DOWN)
Function flash (pin) {
For (var I = 0; I < 3; iTunes +) {
Rpio.write (pin, rpio.HIGH)
Rpio.sleep (1)
Rpio.write (pin, rpio.LOW)
Rpio.msleep (500)
}
}
Flash (pin)
/ / rpio.close (pin)
/ / rpio.close (pin1)
/ / Test button is pressed
Function buttonPressed () {
While (1) {
If (rpio.read (pin1) = = rpio.HIGH) {/ / low level detected
Rpio.msleep (20); / / Button Shake
If (rpio.read (pin1) = = rpio.HIGH) {
/ / rpio.write (pin, rpio.HIGH); / / illuminate LED
Flash (pin)
}
} else {
/ / rpio.write (pin, rpio.LOW); / / Button is off
}
}
}
ButtonPressed ()
3. Run:
Node led.js
This is how raspberry pie controls LED through RPIO buttons. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.
