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Assignment 5 for OCE360, timers, tickers, and interrupts.
Dependencies: 4DGL-uLCD-SE MMA8452Q SDFileSystem bouncing_ball mbed
Fork of OCE360_4 by
main.cpp
- Committer:
- rsean10
- Date:
- 2017-11-14
- Revision:
- 8:2617100c441d
- Parent:
- 7:614b40b85579
- Child:
- 9:7a577d790538
File content as of revision 8:2617100c441d:
// A solution to OCE360 Homework #4. // Objective: Use object oriented programming to create a system that displays // multiple balls bouncing around the LCD screen. // Stephen Licht, 11/7/2017 #include "mbed.h" #include "MMA8452Q.h" //acceleromater library #include "uLCD_4DGL.h" //LCD library #include "bouncing_ball.h" //new ball phyics library #include "SDFileSystem.h" #define UPDATE_TIME_S 0.02 #define START_X_1 10 #define START_Y_1 10 #define START_X_2 20 #define START_Y_2 20 #define RADIUS_1 6 #define RADIUS_2 3 #define DEBUG_MODE 0 #define LCD_UPDATE .091 //11 Hz #define DRAW_UPDATE 0.075 //Initialize Serial communication Serial pc(USBTX, USBRX); // SD card (SPI pins) SDFileSystem sd(p5, p6, p7, p8, "sd"); //Led Initialization DigitalOut led1(LED1); //update leds DigitalOut led2(LED2); DigitalOut led3(LED3); //Toggle Initialization InterruptIn button(p13); //Interrupt on the button on pin 13 Timer debounce; //defines debounce timer for proper switching int recorder = 0; void toggle(){ if(debounce.read_ms()>175){ led3=!led3; recorder = !recorder; debounce.reset(); //restart timer after toggle occurs } } //Position recorder Timer logtime; //Function prototype for color selection function: int get_LCD_color(int color_integer); // Graphic LCD - TX, RX, and RES pins uLCD_4DGL uLCD(p9,p10,p11); //initialize a driver object for an LCD connected on pins 9-11 // Accelerometer - SDA, SCL, and I2C address MMA8452Q accel(p28, p27, 0x1D); //initialize a driver object for an accelerometer connected on pins 27-28. physics_ball ball1; //initialize two balls for bouncing physics_ball ball2; //the default states from the library will be used initially //Ticker for update Ticker update1; //ball 1 ticker for update position Ticker update2; //ball 2 ticker for update position void ball1up(){ ball1.update(UPDATE_TIME_S,accel); //updates position led1 = !led1; //changes led state every update } void ball2up(){ ball2.update(UPDATE_TIME_S,accel); //updates position led2 = !led2; //changes led state every update } //Ticker for display Ticker displayup; //ticker for displaying ball on lcd void display(){ // Draw circles in the x and y positions stored by the ball objects: uLCD.filled_circle(ball1.posx, ball1.posy, ball1.radius, get_LCD_color(ball1.color)); uLCD.filled_circle(ball2.posx, ball2.posy, ball2.radius, get_LCD_color(ball2.color)); // Wait before erasing old circles: wait(UPDATE_TIME_S); // In seconds // Erase old circles by writing over there locations using the screen color: uLCD.filled_circle(ball1.posx, ball1.posy, ball1.radius, BLACK); uLCD.filled_circle(ball2.posx, ball2.posy, ball2.radius, BLACK); } int main(){ /* logger1.attach(&pos_log1, LCD_UPDATE); logger2.attach(&pos_log2, LCD_UPDATE); */ // Initialize uLCD uLCD.baudrate(115200); uLCD.background_color(BLACK); uLCD.cls(); // Initialize accelerometer accel.init(); //Initialize balls: ball1.set_state(START_X_1,START_Y_1,0,0); //speeds are set to zero ball1.set_state(START_X_2,START_Y_2,0,0); //Set ball radius and color: ball1.set_param(RADIUS_1,0); //color is unimportant ball2.set_param(RADIUS_2,1); //just making sure the colors are different update1.attach(&ball1up,UPDATE_TIME_S); //ticker force position update ball 1 update2.attach(&ball2up,UPDATE_TIME_S); //ticker force position update ball 2 displayup.attach(&display,LCD_UPDATE); //ticker force lcd update debounce.start(); //starts debounce timer button.rise(&toggle); //toggles on button press while (1) { //execute 'forever' if (DEBUG_MODE) { //If compiled with DEBUG_MODE flag raised, print values to screen. uLCD.locate(0,4); uLCD.printf("X: %d.1\nY: %.1d",ball1.posx,ball1.posy); uLCD.locate(0,6); uLCD.printf("VX: %f.1\nVY: %.1f",ball1.speedx,ball1.speedy); uLCD.locate(0,10); uLCD.printf("AX: %f.1\nAY: %.1f\nAZ: %0.1f",accel.readX(),accel.readY(),accel.readZ()); } } } //Interpret LCD colors. int get_LCD_color(int color_integer) { switch (color_integer) { case 0: return(RED); case 1: return(BLUE); case 2: return(GREEN); default: return(WHITE); } }