jim hamblen / Mbed 2 deprecated appbd_edmaker

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@0:af96f6744422, 2015-02-03 (annotated)

Committer:
4180_1
Date:
Tue Feb 03 19:42:36 2015 +0000
Revision:
0:af96f6744422
ver 1.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
4180_1 0:af96f6744422 1 //Executive Decision Maker for Mbed Application Board
4180_1 0:af96f6744422 2 #include "mbed.h"
4180_1 0:af96f6744422 3 #include "Speaker.h"
4180_1 0:af96f6744422 4 #include "PinDetect.h"
4180_1 0:af96f6744422 5 #include "C12832_lcd.h"
4180_1 0:af96f6744422 6 #include "Arial_9.h" //font for LCD
4180_1 0:af96f6744422 7 #include <math.h> //needed for rand()
4180_1 0:af96f6744422 8
4180_1 0:af96f6744422 9 DigitalOut myLed1(LED1); //Builtin LEDs
4180_1 0:af96f6744422 10 DigitalOut myLed2(LED2);
4180_1 0:af96f6744422 11 DigitalOut myLed3(LED3);
4180_1 0:af96f6744422 12 DigitalOut myLed4(LED4);
4180_1 0:af96f6744422 13
4180_1 0:af96f6744422 14 PinDetect pb1(p14); //Debounce pushbutton and use interrupts
4180_1 0:af96f6744422 15
4180_1 0:af96f6744422 16 Speaker mySpeaker(p26); //PWM speaker to play notes
4180_1 0:af96f6744422 17
4180_1 0:af96f6744422 18 Timer t; //use a hardware timer
4180_1 0:af96f6744422 19
4180_1 0:af96f6744422 20 PwmOut r (p23); //RGB LED pins
4180_1 0:af96f6744422 21 PwmOut g (p24);
4180_1 0:af96f6744422 22 PwmOut b (p25);
4180_1 0:af96f6744422 23
4180_1 0:af96f6744422 24 C12832_LCD lcd; //On board LCD display
4180_1 0:af96f6744422 25
4180_1 0:af96f6744422 26 volatile int pbStatus = 0; //pb hit flag
4180_1 0:af96f6744422 27
4180_1 0:af96f6744422 28 void pb1_hit_callback (void) //pb interrupt routine - a callback after debounce
4180_1 0:af96f6744422 29 {
4180_1 0:af96f6744422 30 pbStatus = 1;
4180_1 0:af96f6744422 31 }
4180_1 0:af96f6744422 32 void funcD( int i) //display a binary number on mbed's 4 LEDs
4180_1 0:af96f6744422 33 {
4180_1 0:af96f6744422 34 myLed1 = i &0x01;
4180_1 0:af96f6744422 35 myLed2 = (i>>1) & 0x01;
4180_1 0:af96f6744422 36 myLed3 = (i>>2) & 0x01;
4180_1 0:af96f6744422 37 myLed4 = (i>>3) & 0x01;
4180_1 0:af96f6744422 38 }
4180_1 0:af96f6744422 39 int main()
4180_1 0:af96f6744422 40 {
4180_1 0:af96f6744422 41 unsigned int number=0;
4180_1 0:af96f6744422 42 //setup debounced pushbutton using interrupts
4180_1 0:af96f6744422 43 pb1.mode(PullDown);
4180_1 0:af96f6744422 44 wait(.01);
4180_1 0:af96f6744422 45 pb1.attach_asserted(&pb1_hit_callback);
4180_1 0:af96f6744422 46 pb1.setSampleFrequency();
4180_1 0:af96f6744422 47 //setup LCD prompt
4180_1 0:af96f6744422 48 lcd.cls();
4180_1 0:af96f6744422 49 lcd.set_font((unsigned char*) Arial_9);
4180_1 0:af96f6744422 50 lcd.printf(" Ask a Question, \n\r then push Joystick");
4180_1 0:af96f6744422 51 //RGB LED init
4180_1 0:af96f6744422 52 b = 1.0; //blue 1.0=off
4180_1 0:af96f6744422 53 //use a timer to generate seed for rand (different number to start each time)
4180_1 0:af96f6744422 54 t.start(); //start timer
4180_1 0:af96f6744422 55 while(pbStatus == 0) {}; //timer counts until pb hit
4180_1 0:af96f6744422 56 srand(t.read_ms()); //read ms from timer
4180_1 0:af96f6744422 57 while(1) {
4180_1 0:af96f6744422 58 if(pbStatus == 1) { //pb hit?
4180_1 0:af96f6744422 59 pbStatus = 0; //reset pb hit flag
4180_1 0:af96f6744422 60 lcd.cls();
4180_1 0:af96f6744422 61 lcd.locate(38,10);
4180_1 0:af96f6744422 62 //loop though several random numbers on LEDs and make beeps on Speaker
4180_1 0:af96f6744422 63 for(int i=0; i<24; ++i) {
4180_1 0:af96f6744422 64 number = (rand() % 16);
4180_1 0:af96f6744422 65 mySpeaker.PlayNote(200.0 * (number + 1), 0.1, 1.0);
4180_1 0:af96f6744422 66 funcD(number);
4180_1 0:af96f6744422 67 }
4180_1 0:af96f6744422 68 // Update RGB led: Red, Yellow, or Green based on number
4180_1 0:af96f6744422 69 // Update LCD: No, Maybe, or Yes
4180_1 0:af96f6744422 70 b = 1.0;
4180_1 0:af96f6744422 71 if (number < 5) {
4180_1 0:af96f6744422 72 r = 0.8;
4180_1 0:af96f6744422 73 g = 1.0;
4180_1 0:af96f6744422 74 lcd.printf(" NO");
4180_1 0:af96f6744422 75 } else {
4180_1 0:af96f6744422 76 r = 0.8;
4180_1 0:af96f6744422 77 g = 0.8;
4180_1 0:af96f6744422 78 if (number <=10) lcd.printf(" MAYBE");
4180_1 0:af96f6744422 79 if (number > 10) {
4180_1 0:af96f6744422 80 r = 1.0;
4180_1 0:af96f6744422 81 lcd.printf(" YES");
4180_1 0:af96f6744422 82 }
4180_1 0:af96f6744422 83 }
4180_1 0:af96f6744422 84 }
4180_1 0:af96f6744422 85 wait(.05);
4180_1 0:af96f6744422 86 }
4180_1 0:af96f6744422 87 }