mbed Starter Kit / mbed Starter Kit Demo Programs

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rgb_buttons/main.cpp@0:6a73d3dc037e, 2014-07-28 (annotated)

Committer:
ShawnHymel
Date:
Mon Jul 28 20:29:28 2014 +0000
Revision:
0:6a73d3dc037e
Added main.cpp files from each of the demo programs. Libraries are not included.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ShawnHymel 0:6a73d3dc037e 1 #include "mbed.h"
ShawnHymel 0:6a73d3dc037e 2
ShawnHymel 0:6a73d3dc037e 3 // Define buttons
ShawnHymel 0:6a73d3dc037e 4 InterruptIn button_red(p5);
ShawnHymel 0:6a73d3dc037e 5 InterruptIn button_green(p6);
ShawnHymel 0:6a73d3dc037e 6 InterruptIn button_blue(p7);
ShawnHymel 0:6a73d3dc037e 7
ShawnHymel 0:6a73d3dc037e 8 // Define LED colors
ShawnHymel 0:6a73d3dc037e 9 PwmOut led_red(p21);
ShawnHymel 0:6a73d3dc037e 10 PwmOut led_green(p22);
ShawnHymel 0:6a73d3dc037e 11 PwmOut led_blue(p23);
ShawnHymel 0:6a73d3dc037e 12
ShawnHymel 0:6a73d3dc037e 13 // Interrupt Service Routine to increment the red color
ShawnHymel 0:6a73d3dc037e 14 void inc_red() {
ShawnHymel 0:6a73d3dc037e 15
ShawnHymel 0:6a73d3dc037e 16 float pwm;
ShawnHymel 0:6a73d3dc037e 17
ShawnHymel 0:6a73d3dc037e 18 // Read in current PWM value and increment it
ShawnHymel 0:6a73d3dc037e 19 pwm = led_red.read();
ShawnHymel 0:6a73d3dc037e 20 pwm += 0.1f;
ShawnHymel 0:6a73d3dc037e 21 if (pwm > 1.0f) {
ShawnHymel 0:6a73d3dc037e 22 pwm = 0.0f;
ShawnHymel 0:6a73d3dc037e 23 }
ShawnHymel 0:6a73d3dc037e 24 led_red.write(pwm);
ShawnHymel 0:6a73d3dc037e 25 }
ShawnHymel 0:6a73d3dc037e 26
ShawnHymel 0:6a73d3dc037e 27 // Interrupt Service Routine to increment the green color
ShawnHymel 0:6a73d3dc037e 28 void inc_green() {
ShawnHymel 0:6a73d3dc037e 29
ShawnHymel 0:6a73d3dc037e 30 float pwm;
ShawnHymel 0:6a73d3dc037e 31
ShawnHymel 0:6a73d3dc037e 32 // Read in current PWM value and increment it
ShawnHymel 0:6a73d3dc037e 33 pwm = led_green.read();
ShawnHymel 0:6a73d3dc037e 34 pwm += 0.1f;
ShawnHymel 0:6a73d3dc037e 35 if (pwm > 1.0f) {
ShawnHymel 0:6a73d3dc037e 36 pwm = 0.0f;
ShawnHymel 0:6a73d3dc037e 37 }
ShawnHymel 0:6a73d3dc037e 38 led_green.write(pwm);
ShawnHymel 0:6a73d3dc037e 39 }
ShawnHymel 0:6a73d3dc037e 40
ShawnHymel 0:6a73d3dc037e 41 // Interrupt Service Routine to increment the blue color
ShawnHymel 0:6a73d3dc037e 42 void inc_blue() {
ShawnHymel 0:6a73d3dc037e 43
ShawnHymel 0:6a73d3dc037e 44 float pwm;
ShawnHymel 0:6a73d3dc037e 45
ShawnHymel 0:6a73d3dc037e 46 // Read in current PWM value and increment it
ShawnHymel 0:6a73d3dc037e 47 pwm = led_blue.read();
ShawnHymel 0:6a73d3dc037e 48 pwm += 0.1f;
ShawnHymel 0:6a73d3dc037e 49 if (pwm > 1.0f) {
ShawnHymel 0:6a73d3dc037e 50 pwm = 0.0f;
ShawnHymel 0:6a73d3dc037e 51 }
ShawnHymel 0:6a73d3dc037e 52 led_blue.write(pwm);
ShawnHymel 0:6a73d3dc037e 53 }
ShawnHymel 0:6a73d3dc037e 54
ShawnHymel 0:6a73d3dc037e 55 // Main loop
ShawnHymel 0:6a73d3dc037e 56 int main() {
ShawnHymel 0:6a73d3dc037e 57
ShawnHymel 0:6a73d3dc037e 58 // Initialize all LED colors as off
ShawnHymel 0:6a73d3dc037e 59 led_red.write(0.0f);
ShawnHymel 0:6a73d3dc037e 60 led_green.write(0.0f);
ShawnHymel 0:6a73d3dc037e 61 led_blue.write(0.0f);
ShawnHymel 0:6a73d3dc037e 62
ShawnHymel 0:6a73d3dc037e 63 // Define three interrupts - one for each color
ShawnHymel 0:6a73d3dc037e 64 button_red.fall(&inc_red);
ShawnHymel 0:6a73d3dc037e 65 button_green.fall(&inc_green);
ShawnHymel 0:6a73d3dc037e 66 button_blue.fall(&inc_blue);
ShawnHymel 0:6a73d3dc037e 67
ShawnHymel 0:6a73d3dc037e 68 // Do nothing! We wait for an interrupt to happen
ShawnHymel 0:6a73d3dc037e 69 while(1) {
ShawnHymel 0:6a73d3dc037e 70 }
ShawnHymel 0:6a73d3dc037e 71 }