El-POM1001 / Mbed 2 deprecated LAB07_Oppgave4

PWM fun:)

Dependencies:   mbed

Fork of LAB07_Oppgave4_Template by EN-SOC3001

main.cpp@1:9aeabcc7f4a7, 2015-10-15 (annotated)

Committer:
madmonkeyman82
Date:
Thu Oct 15 15:34:01 2015 +0000
Revision:
1:9aeabcc7f4a7
Parent:
0:ce0d1043321f 
First

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rlanghbv 0:ce0d1043321f 1 #include "mbed.h"
rlanghbv 0:ce0d1043321f 2
madmonkeyman82 1:9aeabcc7f4a7 3 //------------------------------------
madmonkeyman82 1:9aeabcc7f4a7 4 // Hyperterminal configuration
madmonkeyman82 1:9aeabcc7f4a7 5 // 9600 bauds, 8-bit data, no parity
madmonkeyman82 1:9aeabcc7f4a7 6 //------------------------------------
madmonkeyman82 1:9aeabcc7f4a7 7
madmonkeyman82 1:9aeabcc7f4a7 8 Serial pc(SERIAL_TX, SERIAL_RX);
madmonkeyman82 1:9aeabcc7f4a7 9
rlanghbv 0:ce0d1043321f 10 Timeout onTime;
rlanghbv 0:ce0d1043321f 11 Ticker periodTimer;
madmonkeyman82 1:9aeabcc7f4a7 12 Timeout timedown;
madmonkeyman82 1:9aeabcc7f4a7 13
rlanghbv 0:ce0d1043321f 14 DigitalOut led(PA_9);
madmonkeyman82 1:9aeabcc7f4a7 15 InterruptIn SW7(PB_3);
madmonkeyman82 1:9aeabcc7f4a7 16 InterruptIn SW6(PA_10);
rlanghbv 0:ce0d1043321f 17
rlanghbv 0:ce0d1043321f 18 float periodTime=0.020; // 20ms period time (50Hz)
madmonkeyman82 1:9aeabcc7f4a7 19 float dutyCycle=.50;
madmonkeyman82 1:9aeabcc7f4a7 20
madmonkeyman82 1:9aeabcc7f4a7 21 void timeouttick()
madmonkeyman82 1:9aeabcc7f4a7 22 {
madmonkeyman82 1:9aeabcc7f4a7 23 SW7.enable_irq();
madmonkeyman82 1:9aeabcc7f4a7 24 SW6.enable_irq();
madmonkeyman82 1:9aeabcc7f4a7 25 }
madmonkeyman82 1:9aeabcc7f4a7 26
madmonkeyman82 1:9aeabcc7f4a7 27 void interruptSW7(){
madmonkeyman82 1:9aeabcc7f4a7 28 SW7.disable_irq();
madmonkeyman82 1:9aeabcc7f4a7 29 timedown.attach(&timeouttick, 0.03); //debounce
madmonkeyman82 1:9aeabcc7f4a7 30 if(dutyCycle < 1.00f)
madmonkeyman82 1:9aeabcc7f4a7 31 {
madmonkeyman82 1:9aeabcc7f4a7 32 dutyCycle += 0.05f;
madmonkeyman82 1:9aeabcc7f4a7 33 }
madmonkeyman82 1:9aeabcc7f4a7 34 }
madmonkeyman82 1:9aeabcc7f4a7 35
madmonkeyman82 1:9aeabcc7f4a7 36 void interruptSW6(){
madmonkeyman82 1:9aeabcc7f4a7 37 SW6.disable_irq();
madmonkeyman82 1:9aeabcc7f4a7 38 timedown.attach(&timeouttick, 0.03); //debounce
madmonkeyman82 1:9aeabcc7f4a7 39 if(dutyCycle > 0.10f)
madmonkeyman82 1:9aeabcc7f4a7 40 {
madmonkeyman82 1:9aeabcc7f4a7 41 dutyCycle -= 0.05f;
madmonkeyman82 1:9aeabcc7f4a7 42 }
madmonkeyman82 1:9aeabcc7f4a7 43 }
rlanghbv 0:ce0d1043321f 44
rlanghbv 0:ce0d1043321f 45 void TurnLightOff()
rlanghbv 0:ce0d1043321f 46 { led=1;
rlanghbv 0:ce0d1043321f 47 }
rlanghbv 0:ce0d1043321f 48
rlanghbv 0:ce0d1043321f 49 void TurnLightOn()
rlanghbv 0:ce0d1043321f 50 { led=0;
rlanghbv 0:ce0d1043321f 51 onTime.attach(&TurnLightOff,(float)periodTime*dutyCycle);
rlanghbv 0:ce0d1043321f 52 }
rlanghbv 0:ce0d1043321f 53
rlanghbv 0:ce0d1043321f 54 int main()
rlanghbv 0:ce0d1043321f 55 {
madmonkeyman82 1:9aeabcc7f4a7 56 pc.printf("Velkommen\r\n");
madmonkeyman82 1:9aeabcc7f4a7 57 //attach interrup to faling edge
madmonkeyman82 1:9aeabcc7f4a7 58 SW7.fall(&interruptSW7);
madmonkeyman82 1:9aeabcc7f4a7 59 SW6.fall(&interruptSW6);
madmonkeyman82 1:9aeabcc7f4a7 60
rlanghbv 0:ce0d1043321f 61 periodTimer.attach(&TurnLightOn,periodTime);
madmonkeyman82 1:9aeabcc7f4a7 62
madmonkeyman82 1:9aeabcc7f4a7 63 float dutyCycleprv = 0.00f;
rlanghbv 0:ce0d1043321f 64
rlanghbv 0:ce0d1043321f 65 while(1) {
madmonkeyman82 1:9aeabcc7f4a7 66 if(dutyCycleprv != dutyCycle)
madmonkeyman82 1:9aeabcc7f4a7 67 {
madmonkeyman82 1:9aeabcc7f4a7 68 pc.printf("DutyCycle: %.0f%%\r\n", dutyCycle*100);
madmonkeyman82 1:9aeabcc7f4a7 69 dutyCycleprv =dutyCycle;
madmonkeyman82 1:9aeabcc7f4a7 70 }
rlanghbv 0:ce0d1043321f 71 }
rlanghbv 0:ce0d1043321f 72 }