PWM example by @Drahoslav7c

examples/pwm/pwm.go

@@ -0,0 +1,40 @@
+/*
+
+A PWM example by @Drahoslav7, using the go-rpio library 
+
+Toggles a LED on physical pin 19 (mcu pin 10)
+Connect a LED with resistor from pin 19 to ground.
+
+*/
+
+package main
+
+import (
+        "os"
+        "time"
+        "github.com/stianeikeland/go-rpio"
+)
+
+func main() {
+        err := rpio.Open()
+        if err != nil {
+                os.Exit(1)
+        }
+        defer rpio.Close()
+
+        pin := rpio.Pin(19)
+        pin.Mode(rpio.Pwm)
+        pin.Freq(60000)
+        pin.DutyCycle(0, 32)
+
+        for i := 0; i < 5; i++ {
+                for i := uint32(0); i < 32; i++ { // increasing brightness
+                        pin.DutyCycle(i, 32)
+                        time.Sleep(time.Second/32)
+                }
+                for i := uint32(32); i != 0; i-- { // decreasing brightness
+                        pin.DutyCycle(i, 32)
+                        time.Sleep(time.Second/32)
+                }
+        }
+}