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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
main.cpp@3:a7f02754bc99, 2017-11-07 (annotated)
- Committer:
- slicht
- Date:
- Tue Nov 07 12:09:39 2017 +0000
- Revision:
- 3:a7f02754bc99
- Parent:
- 2:552e6feb8709
- Child:
- 5:62b2d643b132
Comments added.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
slicht | 2:552e6feb8709 | 1 | // A solution to OCE360 Homework #4. |
slicht | 2:552e6feb8709 | 2 | // Objective: Use object oriented programming to create a system that displays |
slicht | 2:552e6feb8709 | 3 | // multiple balls bouncing around the LCD screen. |
slicht | 3:a7f02754bc99 | 4 | // Stephen Licht, 11/7/2017 |
slicht | 1:6b99ffa62cc8 | 5 | |
slicht | 0:8d3812068c6c | 6 | #include "mbed.h" |
slicht | 2:552e6feb8709 | 7 | #include "MMA8452Q.h" //acceleromater library |
slicht | 2:552e6feb8709 | 8 | #include "uLCD_4DGL.h" //LCD library |
slicht | 2:552e6feb8709 | 9 | #include "bouncing_ball.h" //new ball phyics library |
slicht | 1:6b99ffa62cc8 | 10 | |
slicht | 2:552e6feb8709 | 11 | #define UPDATE_TIME_S 0.02 |
slicht | 2:552e6feb8709 | 12 | #define START_X_1 10 |
slicht | 2:552e6feb8709 | 13 | #define START_Y_1 10 |
slicht | 2:552e6feb8709 | 14 | #define START_X_2 20 |
slicht | 2:552e6feb8709 | 15 | #define START_Y_2 20 |
slicht | 2:552e6feb8709 | 16 | #define RADIUS_1 6 |
slicht | 2:552e6feb8709 | 17 | #define RADIUS_2 3 |
slicht | 0:8d3812068c6c | 18 | |
slicht | 2:552e6feb8709 | 19 | #define DEBUG_MODE 0 |
slicht | 2:552e6feb8709 | 20 | |
slicht | 2:552e6feb8709 | 21 | //Function prototype for color selection function: |
slicht | 2:552e6feb8709 | 22 | int get_LCD_color(int color_integer); |
slicht | 1:6b99ffa62cc8 | 23 | |
slicht | 1:6b99ffa62cc8 | 24 | // Graphic LCD - TX, RX, and RES pins |
slicht | 2:552e6feb8709 | 25 | uLCD_4DGL uLCD(p9,p10,p11); //initialize a driver object for an LCD connected on pins 9-11 |
slicht | 1:6b99ffa62cc8 | 26 | |
slicht | 1:6b99ffa62cc8 | 27 | // Accelerometer - SDA, SCL, and I2C address |
slicht | 2:552e6feb8709 | 28 | MMA8452Q accel(p28, p27, 0x1D); //initialize a driver object for an accelerometer connected on pins 27-28. |
slicht | 1:6b99ffa62cc8 | 29 | |
slicht | 2:552e6feb8709 | 30 | physics_ball ball1; //initialize two balls for bouncing |
slicht | 2:552e6feb8709 | 31 | physics_ball ball2; //the default states from the library will be used initially |
slicht | 0:8d3812068c6c | 32 | |
slicht | 2:552e6feb8709 | 33 | int main() |
slicht | 2:552e6feb8709 | 34 | { |
slicht | 1:6b99ffa62cc8 | 35 | // Initialize uLCD |
slicht | 1:6b99ffa62cc8 | 36 | uLCD.baudrate(115200); |
slicht | 1:6b99ffa62cc8 | 37 | uLCD.background_color(BLACK); |
slicht | 1:6b99ffa62cc8 | 38 | uLCD.cls(); |
slicht | 1:6b99ffa62cc8 | 39 | |
slicht | 1:6b99ffa62cc8 | 40 | // Initialize accelerometer |
slicht | 1:6b99ffa62cc8 | 41 | accel.init(); |
slicht | 1:6b99ffa62cc8 | 42 | |
slicht | 2:552e6feb8709 | 43 | //Initialize balls: |
slicht | 2:552e6feb8709 | 44 | ball1.set_state(START_X_1,START_Y_1,0,0); //speeds are set to zero |
slicht | 2:552e6feb8709 | 45 | ball1.set_state(START_X_2,START_Y_2,0,0); |
slicht | 2:552e6feb8709 | 46 | |
slicht | 2:552e6feb8709 | 47 | //Set ball radius and color: |
slicht | 2:552e6feb8709 | 48 | ball1.set_param(RADIUS_1,0); //color is unimportant |
slicht | 2:552e6feb8709 | 49 | ball2.set_param(RADIUS_2,1); //just making sure the colors are different |
slicht | 2:552e6feb8709 | 50 | |
slicht | 2:552e6feb8709 | 51 | /* Make the balls "fall" in direction of accelerometer by forcing the ball objects |
slicht | 2:552e6feb8709 | 52 | to update themselves at regular intervals, and te drawing the locations reported |
slicht | 2:552e6feb8709 | 53 | by the ball objects on the LCD screen: */ |
slicht | 2:552e6feb8709 | 54 | while (1) { //execute 'forever' |
slicht | 3:a7f02754bc99 | 55 | // Draw circles in the x and y positions stored by the ball objects: |
slicht | 2:552e6feb8709 | 56 | uLCD.filled_circle(ball1.posx, ball1.posy, ball1.radius, get_LCD_color(ball1.color)); |
slicht | 2:552e6feb8709 | 57 | uLCD.filled_circle(ball2.posx, ball2.posy, ball2.radius, get_LCD_color(ball2.color)); |
slicht | 2:552e6feb8709 | 58 | |
slicht | 2:552e6feb8709 | 59 | // Wait before erasing old circles: |
slicht | 2:552e6feb8709 | 60 | wait(UPDATE_TIME_S); // In seconds |
slicht | 2:552e6feb8709 | 61 | |
slicht | 2:552e6feb8709 | 62 | // Erase old circles by writing over there locations using the screen color: |
slicht | 2:552e6feb8709 | 63 | uLCD.filled_circle(ball1.posx, ball1.posy, ball1.radius, BLACK); |
slicht | 2:552e6feb8709 | 64 | uLCD.filled_circle(ball2.posx, ball2.posy, ball2.radius, BLACK); |
slicht | 1:6b99ffa62cc8 | 65 | |
slicht | 2:552e6feb8709 | 66 | // Force the objects 'ball1' and 'ball2' to update their stored positions |
slicht | 2:552e6feb8709 | 67 | // and velocities: |
slicht | 2:552e6feb8709 | 68 | ball1.update(UPDATE_TIME_S,accel); |
slicht | 2:552e6feb8709 | 69 | ball2.update(UPDATE_TIME_S,accel); |
slicht | 2:552e6feb8709 | 70 | |
slicht | 2:552e6feb8709 | 71 | if (DEBUG_MODE) { |
slicht | 3:a7f02754bc99 | 72 | //If compiled with DEBUG_MODE flag raised, print values to screen. |
slicht | 2:552e6feb8709 | 73 | uLCD.locate(0,4); |
slicht | 2:552e6feb8709 | 74 | uLCD.printf("X: %d.1\nY: %.1d",ball1.posx,ball1.posy); |
slicht | 2:552e6feb8709 | 75 | |
slicht | 2:552e6feb8709 | 76 | uLCD.locate(0,6); |
slicht | 2:552e6feb8709 | 77 | uLCD.printf("VX: %f.1\nVY: %.1f",ball1.speedx,ball1.speedy); |
slicht | 1:6b99ffa62cc8 | 78 | |
slicht | 2:552e6feb8709 | 79 | uLCD.locate(0,10); |
slicht | 2:552e6feb8709 | 80 | uLCD.printf("AX: %f.1\nAY: %.1f\nAZ: %0.1f",accel.readX(),accel.readY(),accel.readZ()); |
slicht | 2:552e6feb8709 | 81 | } |
slicht | 2:552e6feb8709 | 82 | } |
slicht | 2:552e6feb8709 | 83 | } |
slicht | 1:6b99ffa62cc8 | 84 | |
slicht | 3:a7f02754bc99 | 85 | //Interpret LCD colors. |
slicht | 2:552e6feb8709 | 86 | int get_LCD_color(int color_integer) |
slicht | 2:552e6feb8709 | 87 | { |
slicht | 2:552e6feb8709 | 88 | switch (color_integer) { |
slicht | 2:552e6feb8709 | 89 | case 0: |
slicht | 2:552e6feb8709 | 90 | return(RED); |
slicht | 2:552e6feb8709 | 91 | case 1: |
slicht | 2:552e6feb8709 | 92 | return(BLUE); |
slicht | 2:552e6feb8709 | 93 | case 2: |
slicht | 2:552e6feb8709 | 94 | return(GREEN); |
slicht | 2:552e6feb8709 | 95 | default: |
slicht | 2:552e6feb8709 | 96 | return(WHITE); |
slicht | 0:8d3812068c6c | 97 | } |
slicht | 1:6b99ffa62cc8 | 98 | } |