Diff: main.cpp

Revision:

0:3e6a4dfbcb88

Child:

1:126964580159

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Dec 29 06:01:32 2016 +0000
@@ -0,0 +1,70 @@
+#include "mbed.h"
+#include "mRotaryEncoder.h"
+
+// Simple demo for Hackaday
+// Al Williams
+
+// This require two Keyes modules (or equivalent)
+// A KY-040 rotary encoder is connected to D7, D8 and the switch to D2
+// D8 connects to CLK and D7 connects to DT
+// if the rotation is backwards switch the wiring or swap the definitions in 
+// software
+
+// There is also a KY-016 RGB LED with integrated resistors
+// This board plugs in with the ground pin next to D13
+// then the other pins naturally hit D13, D12, and D11
+
+PwmOut blueled(D13);
+PwmOut greenled(D12);
+PwmOut redled(D11);
+
+// RGB values for  LEDS
+PwmOut *leds[]={&redled, &greenled, &blueled};
+float rgb[]={0.0, 0,0, 0.0};
+int sel=0;  // which component are we changing?
+
+DigitalIn mybutton(USER_BUTTON);  // not used here
+
+// Here's the encoder object
+mRotaryEncoder enc(D7,D8, D2,PullNone);
+
+
+// Helper function to set the PWM values
+void setleds()
+{
+    for (int i=0;i<sizeof(leds)/sizeof(leds[0]);i++) leds[i]->write(rgb[i]);
+}
+
+
+// Library calls here when you go clockwise
+void cw()
+{
+// modify the selected RGB component    
+   rgb[sel]+=0.1;
+   if (rgb[sel]>1.0) rgb[sel]=1.0;
+   setleds();
+}
+
+// Library calls here when you go anticlockwise
+void ccw()
+{
+// modify the selected RGB component    
+   rgb[sel]-=0.1;
+   if (rgb[sel]<0.0) rgb[sel]=0.0;
+   setleds();
+}
+
+// Library calls here when you push in on the encoder shaft
+void btn()
+{
+    // change selected component (0, 1, 2)
+    if (++sel>2) sel=0;
+}
+
+int main() {
+// Set up encoder callbacks
+    enc.attachROTCW(cw);
+    enc.attachROTCCW(ccw);
+    enc.attachSW(btn);
+    while (true);   // nothing else to do but wait
+}
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