Al Williams / Mbed 2 deprecated Nucleo_Encoder_RGB

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Dependencies:   mRotaryEncoder mbed

main.cpp@0:3e6a4dfbcb88, 2016-12-29 (annotated)

Committer:
wd5gnr
Date:
Thu Dec 29 06:01:32 2016 +0000
Revision:
0:3e6a4dfbcb88
Child:
1:126964580159
Initial comming

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wd5gnr 0:3e6a4dfbcb88 1 #include "mbed.h"
wd5gnr 0:3e6a4dfbcb88 2 #include "mRotaryEncoder.h"
wd5gnr 0:3e6a4dfbcb88 3
wd5gnr 0:3e6a4dfbcb88 4 // Simple demo for Hackaday
wd5gnr 0:3e6a4dfbcb88 5 // Al Williams
wd5gnr 0:3e6a4dfbcb88 6
wd5gnr 0:3e6a4dfbcb88 7 // This require two Keyes modules (or equivalent)
wd5gnr 0:3e6a4dfbcb88 8 // A KY-040 rotary encoder is connected to D7, D8 and the switch to D2
wd5gnr 0:3e6a4dfbcb88 9 // D8 connects to CLK and D7 connects to DT
wd5gnr 0:3e6a4dfbcb88 10 // if the rotation is backwards switch the wiring or swap the definitions in
wd5gnr 0:3e6a4dfbcb88 11 // software
wd5gnr 0:3e6a4dfbcb88 12
wd5gnr 0:3e6a4dfbcb88 13 // There is also a KY-016 RGB LED with integrated resistors
wd5gnr 0:3e6a4dfbcb88 14 // This board plugs in with the ground pin next to D13
wd5gnr 0:3e6a4dfbcb88 15 // then the other pins naturally hit D13, D12, and D11
wd5gnr 0:3e6a4dfbcb88 16
wd5gnr 0:3e6a4dfbcb88 17 PwmOut blueled(D13);
wd5gnr 0:3e6a4dfbcb88 18 PwmOut greenled(D12);
wd5gnr 0:3e6a4dfbcb88 19 PwmOut redled(D11);
wd5gnr 0:3e6a4dfbcb88 20
wd5gnr 0:3e6a4dfbcb88 21 // RGB values for LEDS
wd5gnr 0:3e6a4dfbcb88 22 PwmOut *leds[]={&redled, &greenled, &blueled};
wd5gnr 0:3e6a4dfbcb88 23 float rgb[]={0.0, 0,0, 0.0};
wd5gnr 0:3e6a4dfbcb88 24 int sel=0; // which component are we changing?
wd5gnr 0:3e6a4dfbcb88 25
wd5gnr 0:3e6a4dfbcb88 26 DigitalIn mybutton(USER_BUTTON); // not used here
wd5gnr 0:3e6a4dfbcb88 27
wd5gnr 0:3e6a4dfbcb88 28 // Here's the encoder object
wd5gnr 0:3e6a4dfbcb88 29 mRotaryEncoder enc(D7,D8, D2,PullNone);
wd5gnr 0:3e6a4dfbcb88 30
wd5gnr 0:3e6a4dfbcb88 31
wd5gnr 0:3e6a4dfbcb88 32 // Helper function to set the PWM values
wd5gnr 0:3e6a4dfbcb88 33 void setleds()
wd5gnr 0:3e6a4dfbcb88 34 {
wd5gnr 0:3e6a4dfbcb88 35 for (int i=0;i<sizeof(leds)/sizeof(leds[0]);i++) leds[i]->write(rgb[i]);
wd5gnr 0:3e6a4dfbcb88 36 }
wd5gnr 0:3e6a4dfbcb88 37
wd5gnr 0:3e6a4dfbcb88 38
wd5gnr 0:3e6a4dfbcb88 39 // Library calls here when you go clockwise
wd5gnr 0:3e6a4dfbcb88 40 void cw()
wd5gnr 0:3e6a4dfbcb88 41 {
wd5gnr 0:3e6a4dfbcb88 42 // modify the selected RGB component
wd5gnr 0:3e6a4dfbcb88 43 rgb[sel]+=0.1;
wd5gnr 0:3e6a4dfbcb88 44 if (rgb[sel]>1.0) rgb[sel]=1.0;
wd5gnr 0:3e6a4dfbcb88 45 setleds();
wd5gnr 0:3e6a4dfbcb88 46 }
wd5gnr 0:3e6a4dfbcb88 47
wd5gnr 0:3e6a4dfbcb88 48 // Library calls here when you go anticlockwise
wd5gnr 0:3e6a4dfbcb88 49 void ccw()
wd5gnr 0:3e6a4dfbcb88 50 {
wd5gnr 0:3e6a4dfbcb88 51 // modify the selected RGB component
wd5gnr 0:3e6a4dfbcb88 52 rgb[sel]-=0.1;
wd5gnr 0:3e6a4dfbcb88 53 if (rgb[sel]<0.0) rgb[sel]=0.0;
wd5gnr 0:3e6a4dfbcb88 54 setleds();
wd5gnr 0:3e6a4dfbcb88 55 }
wd5gnr 0:3e6a4dfbcb88 56
wd5gnr 0:3e6a4dfbcb88 57 // Library calls here when you push in on the encoder shaft
wd5gnr 0:3e6a4dfbcb88 58 void btn()
wd5gnr 0:3e6a4dfbcb88 59 {
wd5gnr 0:3e6a4dfbcb88 60 // change selected component (0, 1, 2)
wd5gnr 0:3e6a4dfbcb88 61 if (++sel>2) sel=0;
wd5gnr 0:3e6a4dfbcb88 62 }
wd5gnr 0:3e6a4dfbcb88 63
wd5gnr 0:3e6a4dfbcb88 64 int main() {
wd5gnr 0:3e6a4dfbcb88 65 // Set up encoder callbacks
wd5gnr 0:3e6a4dfbcb88 66 enc.attachROTCW(cw);
wd5gnr 0:3e6a4dfbcb88 67 enc.attachROTCCW(ccw);
wd5gnr 0:3e6a4dfbcb88 68 enc.attachSW(btn);
wd5gnr 0:3e6a4dfbcb88 69 while (true); // nothing else to do but wait
wd5gnr 0:3e6a4dfbcb88 70 }