proyectotecnicas / Mbed 2 deprecated PWM

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Dependencies:   TextLCD mbed

Fork of TutoElectro_PWM by Alejandro M

main.cpp@0:647746eea42d, 2015-01-04 (annotated)

Committer:
Twistx77
Date:
Sun Jan 04 22:12:46 2015 +0000
Revision:
0:647746eea42d
Child:
1:778a662bafcf
Simple PWM tutorial using FRDM-KL25Z made by Twistx77 from TutoElectro

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Twistx77 0:647746eea42d 1 #include "mbed.h"
Twistx77 0:647746eea42d 2
Twistx77 0:647746eea42d 3 PwmOut pwm1(PTB0);
Twistx77 0:647746eea42d 4 PwmOut pwmLED(LED_RED);
Twistx77 0:647746eea42d 5 Serial pc(USBTX,USBRX);
Twistx77 0:647746eea42d 6
Twistx77 0:647746eea42d 7 uint16_t periodPWM1 = 1;
Twistx77 0:647746eea42d 8 uint16_t periodPWMLED =1;
Twistx77 0:647746eea42d 9 float dutyPWM1 = 0;
Twistx77 0:647746eea42d 10 float dutyPWMLED = 0;
Twistx77 0:647746eea42d 11
Twistx77 0:647746eea42d 12 void rxInterrupt()
Twistx77 0:647746eea42d 13 {
Twistx77 0:647746eea42d 14
Twistx77 0:647746eea42d 15 switch(pc.getc()) {
Twistx77 0:647746eea42d 16
Twistx77 0:647746eea42d 17 case 'a':
Twistx77 0:647746eea42d 18
Twistx77 0:647746eea42d 19 periodPWM1++;
Twistx77 0:647746eea42d 20 periodPWMLED++;
Twistx77 0:647746eea42d 21
Twistx77 0:647746eea42d 22 pwm1.period_ms(periodPWM1);
Twistx77 0:647746eea42d 23 pwmLED.period_ms(periodPWMLED);
Twistx77 0:647746eea42d 24
Twistx77 0:647746eea42d 25
Twistx77 0:647746eea42d 26
Twistx77 0:647746eea42d 27 break;
Twistx77 0:647746eea42d 28
Twistx77 0:647746eea42d 29 case 's':
Twistx77 0:647746eea42d 30
Twistx77 0:647746eea42d 31 if (periodPWM1>1) {
Twistx77 0:647746eea42d 32 periodPWM1--;
Twistx77 0:647746eea42d 33 periodPWMLED--;
Twistx77 0:647746eea42d 34 }
Twistx77 0:647746eea42d 35
Twistx77 0:647746eea42d 36 pwm1.period_ms(periodPWM1);
Twistx77 0:647746eea42d 37 pwmLED.period_ms(periodPWMLED);
Twistx77 0:647746eea42d 38
Twistx77 0:647746eea42d 39 break;
Twistx77 0:647746eea42d 40
Twistx77 0:647746eea42d 41 case 'f':
Twistx77 0:647746eea42d 42
Twistx77 0:647746eea42d 43 if (dutyPWM1<1) {
Twistx77 0:647746eea42d 44 dutyPWM1 = dutyPWM1 + 0.05 ;
Twistx77 0:647746eea42d 45 dutyPWMLED = dutyPWMLED + 0.05;
Twistx77 0:647746eea42d 46 }
Twistx77 0:647746eea42d 47
Twistx77 0:647746eea42d 48 pwm1.write(dutyPWM1);
Twistx77 0:647746eea42d 49 pwmLED.write(dutyPWMLED);
Twistx77 0:647746eea42d 50
Twistx77 0:647746eea42d 51 break;
Twistx77 0:647746eea42d 52
Twistx77 0:647746eea42d 53
Twistx77 0:647746eea42d 54 case 'g':
Twistx77 0:647746eea42d 55
Twistx77 0:647746eea42d 56 if (dutyPWM1>0) {
Twistx77 0:647746eea42d 57 dutyPWM1 = dutyPWM1 - 0.05 ;
Twistx77 0:647746eea42d 58 dutyPWMLED = dutyPWMLED - 0.05;
Twistx77 0:647746eea42d 59 }
Twistx77 0:647746eea42d 60
Twistx77 0:647746eea42d 61 pwm1.write(dutyPWM1);
Twistx77 0:647746eea42d 62 pwmLED.write(dutyPWMLED);
Twistx77 0:647746eea42d 63
Twistx77 0:647746eea42d 64 break;
Twistx77 0:647746eea42d 65
Twistx77 0:647746eea42d 66 default: break;
Twistx77 0:647746eea42d 67 }
Twistx77 0:647746eea42d 68
Twistx77 0:647746eea42d 69 pc.printf("Period (ms): %i, Duty: %.2f \r\n", periodPWM1,dutyPWM1);
Twistx77 0:647746eea42d 70
Twistx77 0:647746eea42d 71 }
Twistx77 0:647746eea42d 72
Twistx77 0:647746eea42d 73 int main()
Twistx77 0:647746eea42d 74 {
Twistx77 0:647746eea42d 75
Twistx77 0:647746eea42d 76 pc.baud(115200);
Twistx77 0:647746eea42d 77 pc.attach(&rxInterrupt);
Twistx77 0:647746eea42d 78
Twistx77 0:647746eea42d 79 while(1);
Twistx77 0:647746eea42d 80 }