PWM fun:)
Dependencies: mbed
Fork of LAB07_Oppgave4_Template by
Revision 1:9aeabcc7f4a7, committed 2015-10-15
- Comitter:
- madmonkeyman82
- Date:
- Thu Oct 15 15:34:01 2015 +0000
- Parent:
- 0:ce0d1043321f
- Commit message:
- First
Changed in this revision
main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Wed Oct 14 19:06:20 2015 +0000 +++ b/main.cpp Thu Oct 15 15:34:01 2015 +0000 @@ -1,11 +1,46 @@ #include "mbed.h" +//------------------------------------ +// Hyperterminal configuration +// 9600 bauds, 8-bit data, no parity +//------------------------------------ + +Serial pc(SERIAL_TX, SERIAL_RX); + Timeout onTime; Ticker periodTimer; +Timeout timedown; + DigitalOut led(PA_9); +InterruptIn SW7(PB_3); +InterruptIn SW6(PA_10); float periodTime=0.020; // 20ms period time (50Hz) -float dutyCycle=.05; +float dutyCycle=.50; + +void timeouttick() +{ + SW7.enable_irq(); + SW6.enable_irq(); +} + +void interruptSW7(){ + SW7.disable_irq(); + timedown.attach(&timeouttick, 0.03); //debounce + if(dutyCycle < 1.00f) + { + dutyCycle += 0.05f; + } +} + +void interruptSW6(){ + SW6.disable_irq(); + timedown.attach(&timeouttick, 0.03); //debounce + if(dutyCycle > 0.10f) + { + dutyCycle -= 0.05f; + } +} void TurnLightOff() { led=1; @@ -18,9 +53,20 @@ int main() { + pc.printf("Velkommen\r\n"); + //attach interrup to faling edge + SW7.fall(&interruptSW7); + SW6.fall(&interruptSW6); + periodTimer.attach(&TurnLightOn,periodTime); + + float dutyCycleprv = 0.00f; while(1) { - wait(1); + if(dutyCycleprv != dutyCycle) + { + pc.printf("DutyCycle: %.0f%%\r\n", dutyCycle*100); + dutyCycleprv =dutyCycle; + } } }