First Last
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BMT-K9_if_then_else
if then else demo with potmeter
main.cpp
- Committer:
- vsluiter
- Date:
- 2013-09-24
- Revision:
- 0:e381f9305692
File content as of revision 0:e381f9305692:
#include "mbed.h" // redled is an object of class PwmOut. It uses the LED_RED pin // in human speech: redled is an output that can be controlled with PWM. LED_RED is the pin which is connected to the output PwmOut redled(LED_RED); //ditto... PwmOut greenled(LED_GREEN); PwmOut blueled(LED_BLUE); // pot is an object of class AnalogIn. It uses the PTB0 pin // in human speech: pot is an analog input. You can read the voltage on pin PTB0 AnalogIn pot(PTB0); //start 'main' function. Should be done once in every C(++) program int main() { float potvalue; //setup some stuff //period of PWM signal is 10kHz. Every 100 microsecond a new PWM period is started redled.period_ms(0.1); greenled.period_ms(0.1); blueled.period_ms(0.1); //while 1 is unequal to zero. For humans: loop forever while(1) { //limit loop time wait(0.01); //read potentiometer, store in potvalue potvalue = pot.read(); if(potvalue < 0.33) { redled = 1-potvalue; //subtract from 1 to get high value (almost off) at potmeter maximum greenled = 1; //off blueled = 1; //off } else // value greater or equal to 0.33 { if(potvalue < 0.66) { redled = 1-potvalue; greenled = 1-potvalue; blueled = 1; } else //value greater or equal to 0.66 { redled = 1-potvalue; greenled = 1-potvalue; blueled = 1-potvalue; } } } }