Jake Bonney / Mbed 2 deprecated Assignment6

assignment 6 360- part 1 is complete-freeze balls on lcd screen with a hardware interrupt/button

Dependencies:   4DGL-uLCD-SE MMA8452Q_withfreefall bouncing_ball mbed

Fork of Assignment6 by Jake Bonney

main.cpp@5:62b2d643b132, 2017-12-07 (annotated)

Committer:
jakebonney10
Date:
Thu Dec 07 14:51:51 2017 +0000
Revision:
5:62b2d643b132
Parent:
3:a7f02754bc99 
Freezes balls on lcd screen with a button (p17)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
slicht 0:8d3812068c6c 1 #include "mbed.h"
slicht 2:552e6feb8709 2 #include "MMA8452Q.h" //acceleromater library
slicht 2:552e6feb8709 3 #include "uLCD_4DGL.h" //LCD library
slicht 2:552e6feb8709 4 #include "bouncing_ball.h" //new ball phyics library
slicht 1:6b99ffa62cc8 5
slicht 2:552e6feb8709 6 #define UPDATE_TIME_S 0.02
slicht 2:552e6feb8709 7 #define START_X_1 10
slicht 2:552e6feb8709 8 #define START_Y_1 10
slicht 2:552e6feb8709 9 #define START_X_2 20
slicht 2:552e6feb8709 10 #define START_Y_2 20
slicht 2:552e6feb8709 11 #define RADIUS_1 6
slicht 2:552e6feb8709 12 #define RADIUS_2 3
slicht 0:8d3812068c6c 13
slicht 2:552e6feb8709 14 #define DEBUG_MODE 0
slicht 2:552e6feb8709 15
slicht 2:552e6feb8709 16 //Function prototype for color selection function:
slicht 2:552e6feb8709 17 int get_LCD_color(int color_integer);
slicht 1:6b99ffa62cc8 18
slicht 1:6b99ffa62cc8 19 // Graphic LCD - TX, RX, and RES pins
slicht 2:552e6feb8709 20 uLCD_4DGL uLCD(p9,p10,p11); //initialize a driver object for an LCD connected on pins 9-11
slicht 1:6b99ffa62cc8 21
slicht 1:6b99ffa62cc8 22 // Accelerometer - SDA, SCL, and I2C address
slicht 2:552e6feb8709 23 MMA8452Q accel(p28, p27, 0x1D); //initialize a driver object for an accelerometer connected on pins 27-28.
slicht 1:6b99ffa62cc8 24
slicht 2:552e6feb8709 25 physics_ball ball1; //initialize two balls for bouncing
slicht 2:552e6feb8709 26 physics_ball ball2; //the default states from the library will be used initially
slicht 0:8d3812068c6c 27
jakebonney10 5:62b2d643b132 28 // External Interrupts
jakebonney10 5:62b2d643b132 29 InterruptIn button(p18);
jakebonney10 5:62b2d643b132 30 InterruptIn freefall_acc(p17);
jakebonney10 5:62b2d643b132 31 Timer debounce;
jakebonney10 5:62b2d643b132 32
jakebonney10 5:62b2d643b132 33
jakebonney10 5:62b2d643b132 34 // Response to the hardware interrupt(button being pressed), set speed of balls = 0
jakebonney10 5:62b2d643b132 35 void Freeze_button(){
jakebonney10 5:62b2d643b132 36 ball1.set_state(ball1.posx, ball1.posy,0,0);
jakebonney10 5:62b2d643b132 37 ball2.set_state(ball2.posx, ball2.posy,0,0);
jakebonney10 5:62b2d643b132 38 wait(2);
jakebonney10 5:62b2d643b132 39 debounce.reset();
jakebonney10 5:62b2d643b132 40 }
jakebonney10 5:62b2d643b132 41 //void Freeze_ff(){
jakebonney10 5:62b2d643b132 42 //if
jakebonney10 5:62b2d643b132 43
slicht 2:552e6feb8709 44 int main()
slicht 2:552e6feb8709 45 {
jakebonney10 5:62b2d643b132 46 button.mode(PullUp); // use internal resistors in button in order to keep output reading "high", then when button switched it will fall
jakebonney10 5:62b2d643b132 47 button.fall(&Freeze_button); //freeze accelerometer for 2 sec when button is pressed
jakebonney10 5:62b2d643b132 48
slicht 1:6b99ffa62cc8 49 // Initialize uLCD
slicht 1:6b99ffa62cc8 50 uLCD.baudrate(115200);
slicht 1:6b99ffa62cc8 51 uLCD.background_color(BLACK);
slicht 1:6b99ffa62cc8 52 uLCD.cls();
slicht 1:6b99ffa62cc8 53
slicht 1:6b99ffa62cc8 54 // Initialize accelerometer
slicht 1:6b99ffa62cc8 55 accel.init();
slicht 1:6b99ffa62cc8 56
slicht 2:552e6feb8709 57 //Initialize balls:
slicht 2:552e6feb8709 58 ball1.set_state(START_X_1,START_Y_1,0,0); //speeds are set to zero
slicht 2:552e6feb8709 59 ball1.set_state(START_X_2,START_Y_2,0,0);
slicht 2:552e6feb8709 60
slicht 2:552e6feb8709 61 //Set ball radius and color:
slicht 2:552e6feb8709 62 ball1.set_param(RADIUS_1,0); //color is unimportant
slicht 2:552e6feb8709 63 ball2.set_param(RADIUS_2,1); //just making sure the colors are different
slicht 2:552e6feb8709 64
slicht 2:552e6feb8709 65 /* Make the balls "fall" in direction of accelerometer by forcing the ball objects
slicht 2:552e6feb8709 66 to update themselves at regular intervals, and te drawing the locations reported
slicht 2:552e6feb8709 67 by the ball objects on the LCD screen: */
slicht 2:552e6feb8709 68 while (1) { //execute 'forever'
slicht 3:a7f02754bc99 69 // Draw circles in the x and y positions stored by the ball objects:
slicht 2:552e6feb8709 70 uLCD.filled_circle(ball1.posx, ball1.posy, ball1.radius, get_LCD_color(ball1.color));
slicht 2:552e6feb8709 71 uLCD.filled_circle(ball2.posx, ball2.posy, ball2.radius, get_LCD_color(ball2.color));
slicht 2:552e6feb8709 72
slicht 2:552e6feb8709 73 // Wait before erasing old circles:
slicht 2:552e6feb8709 74 wait(UPDATE_TIME_S); // In seconds
slicht 2:552e6feb8709 75
slicht 2:552e6feb8709 76 // Erase old circles by writing over there locations using the screen color:
slicht 2:552e6feb8709 77 uLCD.filled_circle(ball1.posx, ball1.posy, ball1.radius, BLACK);
slicht 2:552e6feb8709 78 uLCD.filled_circle(ball2.posx, ball2.posy, ball2.radius, BLACK);
slicht 1:6b99ffa62cc8 79
slicht 2:552e6feb8709 80 // Force the objects 'ball1' and 'ball2' to update their stored positions
slicht 2:552e6feb8709 81 // and velocities:
slicht 2:552e6feb8709 82 ball1.update(UPDATE_TIME_S,accel);
slicht 2:552e6feb8709 83 ball2.update(UPDATE_TIME_S,accel);
slicht 2:552e6feb8709 84
slicht 2:552e6feb8709 85 if (DEBUG_MODE) {
slicht 3:a7f02754bc99 86 //If compiled with DEBUG_MODE flag raised, print values to screen.
slicht 2:552e6feb8709 87 uLCD.locate(0,4);
slicht 2:552e6feb8709 88 uLCD.printf("X: %d.1\nY: %.1d",ball1.posx,ball1.posy);
slicht 2:552e6feb8709 89
slicht 2:552e6feb8709 90 uLCD.locate(0,6);
slicht 2:552e6feb8709 91 uLCD.printf("VX: %f.1\nVY: %.1f",ball1.speedx,ball1.speedy);
slicht 1:6b99ffa62cc8 92
slicht 2:552e6feb8709 93 uLCD.locate(0,10);
slicht 2:552e6feb8709 94 uLCD.printf("AX: %f.1\nAY: %.1f\nAZ: %0.1f",accel.readX(),accel.readY(),accel.readZ());
slicht 2:552e6feb8709 95 }
slicht 2:552e6feb8709 96 }
slicht 2:552e6feb8709 97 }
slicht 1:6b99ffa62cc8 98
slicht 3:a7f02754bc99 99 //Interpret LCD colors.
slicht 2:552e6feb8709 100 int get_LCD_color(int color_integer)
slicht 2:552e6feb8709 101 {
slicht 2:552e6feb8709 102 switch (color_integer) {
slicht 2:552e6feb8709 103 case 0:
slicht 2:552e6feb8709 104 return(RED);
slicht 2:552e6feb8709 105 case 1:
slicht 2:552e6feb8709 106 return(BLUE);
slicht 2:552e6feb8709 107 case 2:
slicht 2:552e6feb8709 108 return(GREEN);
slicht 2:552e6feb8709 109 default:
slicht 2:552e6feb8709 110 return(WHITE);
slicht 0:8d3812068c6c 111 }
slicht 1:6b99ffa62cc8 112 }