Juan Carlos Suárez Barón / Mbed 2 deprecated PWM_EXAMPLE

Keyboard and pwm led brightness

Dependencies:   mbed

main.cpp@0:ae5e8aa73f3a, 2016-06-30 (annotated)

Committer:
juanitoinig84
Date:
Thu Jun 30 23:28:52 2016 +0000
Revision:
0:ae5e8aa73f3a
PWM brightness with keyboard input

Who changed what in which revision?

UserRevisionLine numberNew contents of line
juanitoinig84 0:ae5e8aa73f3a 1 #include "mbed.h"
juanitoinig84 0:ae5e8aa73f3a 2
juanitoinig84 0:ae5e8aa73f3a 3 PwmOut pwm1(PTC11);
juanitoinig84 0:ae5e8aa73f3a 4 PwmOut pwmLED(LED_RED);
juanitoinig84 0:ae5e8aa73f3a 5 //AnalogOut dac(DAC0_OUT);
juanitoinig84 0:ae5e8aa73f3a 6 Serial pc(USBTX,USBRX);
juanitoinig84 0:ae5e8aa73f3a 7
juanitoinig84 0:ae5e8aa73f3a 8
juanitoinig84 0:ae5e8aa73f3a 9 uint16_t periodPWM1 = 1;
juanitoinig84 0:ae5e8aa73f3a 10 uint16_t periodPWMLED =1;
juanitoinig84 0:ae5e8aa73f3a 11 float dutyPWM1 = 0;
juanitoinig84 0:ae5e8aa73f3a 12 float dutyPWMLED = 0;
juanitoinig84 0:ae5e8aa73f3a 13
juanitoinig84 0:ae5e8aa73f3a 14 void rxInterrupt()
juanitoinig84 0:ae5e8aa73f3a 15 {
juanitoinig84 0:ae5e8aa73f3a 16 switch(pc.getc()) {
juanitoinig84 0:ae5e8aa73f3a 17
juanitoinig84 0:ae5e8aa73f3a 18 case 'a':
juanitoinig84 0:ae5e8aa73f3a 19
juanitoinig84 0:ae5e8aa73f3a 20 periodPWM1++;
juanitoinig84 0:ae5e8aa73f3a 21 periodPWMLED++;
juanitoinig84 0:ae5e8aa73f3a 22
juanitoinig84 0:ae5e8aa73f3a 23 pwm1.period_ms(periodPWM1);
juanitoinig84 0:ae5e8aa73f3a 24 pwmLED.period_ms(periodPWMLED);
juanitoinig84 0:ae5e8aa73f3a 25
juanitoinig84 0:ae5e8aa73f3a 26 break;
juanitoinig84 0:ae5e8aa73f3a 27
juanitoinig84 0:ae5e8aa73f3a 28 case 's':
juanitoinig84 0:ae5e8aa73f3a 29
juanitoinig84 0:ae5e8aa73f3a 30 if (periodPWM1>1) {
juanitoinig84 0:ae5e8aa73f3a 31 periodPWM1--;
juanitoinig84 0:ae5e8aa73f3a 32 periodPWMLED--;
juanitoinig84 0:ae5e8aa73f3a 33 }
juanitoinig84 0:ae5e8aa73f3a 34 pwm1.period_ms(periodPWM1);
juanitoinig84 0:ae5e8aa73f3a 35 pwmLED.period_ms(periodPWMLED);
juanitoinig84 0:ae5e8aa73f3a 36
juanitoinig84 0:ae5e8aa73f3a 37 break;
juanitoinig84 0:ae5e8aa73f3a 38
juanitoinig84 0:ae5e8aa73f3a 39 case 'f':
juanitoinig84 0:ae5e8aa73f3a 40
juanitoinig84 0:ae5e8aa73f3a 41 if (dutyPWM1<1) {
juanitoinig84 0:ae5e8aa73f3a 42 dutyPWM1 = dutyPWM1 + 0.05 ;
juanitoinig84 0:ae5e8aa73f3a 43 dutyPWMLED = dutyPWMLED + 0.05;
juanitoinig84 0:ae5e8aa73f3a 44 }
juanitoinig84 0:ae5e8aa73f3a 45
juanitoinig84 0:ae5e8aa73f3a 46 pwm1.write(dutyPWM1);
juanitoinig84 0:ae5e8aa73f3a 47 pwmLED.write(dutyPWMLED);
juanitoinig84 0:ae5e8aa73f3a 48
juanitoinig84 0:ae5e8aa73f3a 49 break;
juanitoinig84 0:ae5e8aa73f3a 50
juanitoinig84 0:ae5e8aa73f3a 51
juanitoinig84 0:ae5e8aa73f3a 52 case 'g':
juanitoinig84 0:ae5e8aa73f3a 53 if (dutyPWM1>0) {
juanitoinig84 0:ae5e8aa73f3a 54 dutyPWM1 = dutyPWM1 - 0.05 ;
juanitoinig84 0:ae5e8aa73f3a 55 dutyPWMLED = dutyPWMLED - 0.05;
juanitoinig84 0:ae5e8aa73f3a 56 }
juanitoinig84 0:ae5e8aa73f3a 57 pwm1.write(dutyPWM1);
juanitoinig84 0:ae5e8aa73f3a 58 pwmLED.write(dutyPWMLED);
juanitoinig84 0:ae5e8aa73f3a 59
juanitoinig84 0:ae5e8aa73f3a 60 break;
juanitoinig84 0:ae5e8aa73f3a 61
juanitoinig84 0:ae5e8aa73f3a 62 default: break;
juanitoinig84 0:ae5e8aa73f3a 63 }
juanitoinig84 0:ae5e8aa73f3a 64
juanitoinig84 0:ae5e8aa73f3a 65 pc.printf("Period (ms): %i, Duty: %.2f \r\n", periodPWM1,dutyPWM1);
juanitoinig84 0:ae5e8aa73f3a 66
juanitoinig84 0:ae5e8aa73f3a 67 }
juanitoinig84 0:ae5e8aa73f3a 68
juanitoinig84 0:ae5e8aa73f3a 69 int main()
juanitoinig84 0:ae5e8aa73f3a 70 {
juanitoinig84 0:ae5e8aa73f3a 71 // pc.baud(115200);
juanitoinig84 0:ae5e8aa73f3a 72 pc.attach(&rxInterrupt);
juanitoinig84 0:ae5e8aa73f3a 73 while(1);
juanitoinig84 0:ae5e8aa73f3a 74 }