![](/media/cache/profiles/ibmfp2.jpg.50x50_q85.jpg)
Executive decision maker for the mbed NXP1768 Application board. Ask a question, and press the center joystick button. Uses a pushbutton, PWM speaker, mbed LEDs, RGB LED, LCD, and the C rand function.
Dependencies: C12832_lcd LCD_fonts PinDetect mbed
main.cpp
- Committer:
- 4180_1
- Date:
- 2015-02-03
- Revision:
- 0:af96f6744422
File content as of revision 0:af96f6744422:
//Executive Decision Maker for Mbed Application Board #include "mbed.h" #include "Speaker.h" #include "PinDetect.h" #include "C12832_lcd.h" #include "Arial_9.h" //font for LCD #include <math.h> //needed for rand() DigitalOut myLed1(LED1); //Builtin LEDs DigitalOut myLed2(LED2); DigitalOut myLed3(LED3); DigitalOut myLed4(LED4); PinDetect pb1(p14); //Debounce pushbutton and use interrupts Speaker mySpeaker(p26); //PWM speaker to play notes Timer t; //use a hardware timer PwmOut r (p23); //RGB LED pins PwmOut g (p24); PwmOut b (p25); C12832_LCD lcd; //On board LCD display volatile int pbStatus = 0; //pb hit flag void pb1_hit_callback (void) //pb interrupt routine - a callback after debounce { pbStatus = 1; } void funcD( int i) //display a binary number on mbed's 4 LEDs { myLed1 = i &0x01; myLed2 = (i>>1) & 0x01; myLed3 = (i>>2) & 0x01; myLed4 = (i>>3) & 0x01; } int main() { unsigned int number=0; //setup debounced pushbutton using interrupts pb1.mode(PullDown); wait(.01); pb1.attach_asserted(&pb1_hit_callback); pb1.setSampleFrequency(); //setup LCD prompt lcd.cls(); lcd.set_font((unsigned char*) Arial_9); lcd.printf(" Ask a Question, \n\r then push Joystick"); //RGB LED init b = 1.0; //blue 1.0=off //use a timer to generate seed for rand (different number to start each time) t.start(); //start timer while(pbStatus == 0) {}; //timer counts until pb hit srand(t.read_ms()); //read ms from timer while(1) { if(pbStatus == 1) { //pb hit? pbStatus = 0; //reset pb hit flag lcd.cls(); lcd.locate(38,10); //loop though several random numbers on LEDs and make beeps on Speaker for(int i=0; i<24; ++i) { number = (rand() % 16); mySpeaker.PlayNote(200.0 * (number + 1), 0.1, 1.0); funcD(number); } // Update RGB led: Red, Yellow, or Green based on number // Update LCD: No, Maybe, or Yes b = 1.0; if (number < 5) { r = 0.8; g = 1.0; lcd.printf(" NO"); } else { r = 0.8; g = 0.8; if (number <=10) lcd.printf(" MAYBE"); if (number > 10) { r = 1.0; lcd.printf(" YES"); } } } wait(.05); } }