Jacob Dahleen
Various applications using the LCD. Cycle through the applications by pressing down on the joystick
Dependencies: C12832 MMA7660 mbed
Diff: main.cpp
- Revision:
- 0:b8fc40cb537b
- Child:
- 1:ff7ee2c32cd1
diff -r 000000000000 -r b8fc40cb537b main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Feb 21 22:12:31 2014 +0000
@@ -0,0 +1,303 @@
+#include "mbed.h"
+#include "C12832.h"
+#include "MMA7660.h"
+
+BusIn joy(p15,p12,p13,p16);
+DigitalIn fire(p14);
+C12832 lcd(p5, p7, p6, p8, p11);
+AnalogIn pot1(p19);
+AnalogIn pot2(p20);
+DigitalIn joyUp(p15);
+DigitalIn joyDown(p12);
+DigitalIn joyLeft(p13);
+DigitalIn joyRight(p16);
+MMA7660 MMA(p28, p27); //I2C Accelerometer
+Serial pc(USBTX, USBRX); // tx, rx
+
+BusOut leds(LED1,LED2,LED3,LED4);
+int appIndex = 0;
+const int NUM_APPS = 4;
+bool appSwitch = true;
+enum SnakeDirection{RIGHT,LEFT,UP,DOWN};
+const int SCREEN_WIDTH = 128;
+const int SCREEN_HEIGHT = 32;
+struct Point {int x; int y;};
+/*
+Index App
+0 Etch a sketch
+1 Flat Level
+2 Snake
+3 ?
+*/
+
+int main()
+{
+ //potentiometer variables
+ float etchX = 0;
+ float etchY = 0;
+ //accelerometer variables
+ int x=0,y=0;
+ //snake variables
+ const int SNAKE_MAX = 256;
+ Point snake[SNAKE_MAX];
+ int snakeHead = 4;//the front filled square in the snake
+ int snakeTail = 0;
+ SnakeDirection snakeGo = RIGHT;
+ bool gameOver = false;
+ int points = 0;
+ Point goalLoc;
+
+ lcd.cls();
+ lcd.printf("hello world");
+
+ while(1) {
+ if (fire) {
+ appIndex = (appIndex+1)%NUM_APPS;
+ leds=0xf;
+ appSwitch = true;
+ }
+ else {
+ leds=joy;
+ }
+
+ switch(appIndex) {
+ case 0: {
+ if(appSwitch){
+ lcd.cls();
+ lcd.locate(0,0);
+ lcd.printf("Etch-a-Sketch");
+ wait(2);
+ lcd.cls();
+ lcd.locate(0,0);
+ appSwitch=false;
+ }
+ //read potentiometers in scaled volatge
+ etchY = 32-pot1.read()*32;
+ etchX = 128-pot2.read()*128;
+ lcd.pixel((int)etchX, (int)etchY, 1);
+ lcd.copy_to_lcd();
+ x = MMA.x();
+ y = MMA.y();
+ if(x > .9 || x < -.9 || y > .9 || y < -.9){
+ lcd.cls();
+ }
+ break;}
+ case 1: {
+ if(appSwitch){
+ lcd.cls();
+ lcd.locate(0,0);
+ lcd.printf("Flat Level");
+ wait(2);
+ lcd.cls();
+ lcd.locate(0,0);
+ appSwitch=false;
+ }
+ //read X,Y +/-Gs and scale for #display pixels
+ x = (x + MMA.x() * 32.0)/2.0;
+ y = (y -(MMA.y() * 16.0))/2.0;
+ lcd.fillcircle(x+63, y+15, 3, 1); //draw bubble
+ lcd.line(0, 11, 127, 11, 1);
+ lcd.line(0, 20, 127, 20, 1);
+ lcd.line(59, 0, 59, 31, 1);
+ lcd.line(68, 0, 68, 31, 1);
+ //lcd.circle(63, 15, 8, 1);
+ wait(.2); //time delay
+ lcd.fillcircle(x+63, y+15, 3, 0); //erase bubble
+ break;}
+ case 2: {//snake
+ if(appSwitch || gameOver){
+ lcd.cls();
+ lcd.locate(0,0);
+ lcd.printf("Snake");
+
+ //setup new snake
+ snakeTail = 0;
+ snakeHead = 4;
+ snakeGo = RIGHT;
+ snake[0].x = 0;
+ snake[0].y = 14;
+ snake[1].x = 2;
+ snake[1].y = 14;
+ snake[2].x = 4;
+ snake[2].y = 14;
+ snake[3].x = 6;
+ snake[3].y = 14;
+ snake[4].x = 8;
+ snake[4].y = 14;
+ gameOver = false;
+ points = 0;
+ float seed = pot1.read()*pot2.read()*100000;
+ srand((int)seed);
+ goalLoc.x = (rand()%64)*2;
+ goalLoc.y = (rand()%16)*2;
+
+ wait(2);
+ lcd.cls();
+ lcd.locate(0,0);
+ appSwitch=false;
+
+ //draw initial snake
+ for(int i = 0; i<=snakeHead; i++){
+ lcd.fillrect(snake[i].x, snake[i].y, snake[i].x+1, snake[i].y+1, 1);
+ }
+ //draw initial goal location
+ lcd.fillrect(goalLoc.x, goalLoc.y, goalLoc.x+1, goalLoc.y+1, 1);
+ lcd.copy_to_lcd();
+
+ //wait for user to see snake before moving
+ wait(1);
+ }
+
+ //read joystick to get new direction
+ if(joyUp && DOWN != snakeGo)
+ {snakeGo = UP;}
+ if(joyDown && UP != snakeGo)
+ {snakeGo = DOWN;}
+ if(joyLeft && RIGHT != snakeGo)
+ {snakeGo = LEFT;}
+ if(joyRight && LEFT != snakeGo)
+ {snakeGo = RIGHT;}
+
+ //move snake
+ switch(snakeGo){
+ case RIGHT:
+ //clear tail
+ lcd.fillrect(snake[snakeTail].x, snake[snakeTail].y, snake[snakeTail].x+1, snake[snakeTail].y+1, 0);
+ snakeTail = (snakeTail+1)%SNAKE_MAX;
+ //draw new front
+ snake[snakeHead+1].x = snake[snakeHead].x + 2;
+ snake[snakeHead+1].y = snake[snakeHead].y;
+ snakeHead = (snakeHead+1)%SNAKE_MAX;
+ lcd.fillrect(snake[snakeHead].x, snake[snakeHead].y, snake[snakeHead].x+1, snake[snakeHead].y+1, 1);
+ //copy to lcd
+ lcd.copy_to_lcd();
+ //check if we went off the screen
+ if(snake[snakeHead].x >= SCREEN_WIDTH){
+ gameOver = true;
+ pc.printf("Off screen to right\n");
+ }
+ break;
+ case LEFT:
+ //clear tail
+ lcd.fillrect(snake[snakeTail].x, snake[snakeTail].y, snake[snakeTail].x+1, snake[snakeTail].y+1, 0);
+ snakeTail = (snakeTail+1)%SNAKE_MAX;
+ //draw new front
+ snake[snakeHead+1].x = snake[snakeHead].x - 2;
+ snake[snakeHead+1].y = snake[snakeHead].y;
+ snakeHead = (snakeHead+1)%SNAKE_MAX;
+ lcd.fillrect(snake[snakeHead].x, snake[snakeHead].y, snake[snakeHead].x+1, snake[snakeHead].y+1, 1);
+ //copy to lcd
+ lcd.copy_to_lcd();
+ //check if we went off the screen
+ if(snake[snakeHead].x < 0){
+ gameOver = true;
+ pc.printf("Off screen to left\n");
+ }
+ break;
+ case UP:
+ //clear tail
+ lcd.fillrect(snake[snakeTail].x, snake[snakeTail].y, snake[snakeTail].x+1, snake[snakeTail].y+1, 0);
+ snakeTail = (snakeTail+1)%SNAKE_MAX;
+ //draw new front
+ snake[snakeHead+1].x = snake[snakeHead].x;
+ snake[snakeHead+1].y = snake[snakeHead].y - 2;
+ snakeHead = (snakeHead+1)%SNAKE_MAX;
+ lcd.fillrect(snake[snakeHead].x, snake[snakeHead].y, snake[snakeHead].x+1, snake[snakeHead].y+1, 1);
+ //copy to lcd
+ lcd.copy_to_lcd();
+ //check if we went off the screen
+ if(snake[snakeHead].y < 0){
+ gameOver = true;
+ pc.printf("Off screen top\n");
+ }
+ //wait?
+ break;
+ case DOWN:
+ //clear tail
+ lcd.fillrect(snake[snakeTail].x, snake[snakeTail].y, snake[snakeTail].x+1, snake[snakeTail].y+1, 0);
+ snakeTail = (snakeTail+1)%SNAKE_MAX;
+ //draw new front
+ snake[snakeHead+1].x = snake[snakeHead].x;
+ snake[snakeHead+1].y = snake[snakeHead].y + 2;
+ snakeHead = (snakeHead+1)%SNAKE_MAX;
+ lcd.fillrect(snake[snakeHead].x, snake[snakeHead].y, snake[snakeHead].x+1, snake[snakeHead].y+1, 1);
+ //copy to lcd
+ lcd.copy_to_lcd();
+ //check if we went off the screen
+ if(snake[snakeHead].y >= SCREEN_HEIGHT){
+ gameOver = true;
+ pc.printf("Off screen bottom\n");
+ }
+ //wait?
+ break;
+ }
+ //check if we scored a point
+ if(snake[snakeHead].x == goalLoc.x && snake[snakeHead].y == goalLoc.y){
+ points++;
+ //clear old goal and set new goal
+ lcd.fillrect(goalLoc.x, goalLoc.y, goalLoc.x+1, goalLoc.y+1, 0);
+ goalLoc.x = (rand()%64)*2;
+ goalLoc.y = (rand()%16)*2;
+ lcd.fillrect(goalLoc.x, goalLoc.y, goalLoc.x+1, goalLoc.y+1, 1);
+
+ //add on to the tail
+ int newTail = (snakeTail-1+SNAKE_MAX)%SNAKE_MAX;
+ snake[newTail].x = snake[snakeTail].x;
+ snake[newTail].y = snake[snakeTail].y;
+ snakeTail = newTail;
+
+ //copy everything to the lcd
+ lcd.copy_to_lcd();
+ if(points > SNAKE_MAX-5)
+ {
+ gameOver = true;
+ pc.printf("Game Winner!\n");
+ }
+ }
+ //check if we hit ourself
+ int testLimit = snakeHead;
+ if(snakeTail > snakeHead){
+ testLimit = snakeHead+SNAKE_MAX;
+ }
+ for(int i = snakeTail; i < testLimit; i++){
+ int iMod = i%SNAKE_MAX;
+ if(snake[snakeHead].x == snake[iMod].x && snake[snakeHead].y == snake[iMod].y){
+ gameOver = true;
+ pc.printf("Hit Self\n");
+ }
+ }
+
+ if(gameOver){
+ //lcd.cls();
+ lcd.locate(0,0);
+ lcd.printf("Game Over, Press Joystick to start over\nPoints Scored: %d",points);
+ pc.printf("Game Over\n");
+ while(!fire){
+ //infinite loop to wait for user to press joystick to restart
+ }
+ wait(.5);
+ }
+
+ break;}
+ case 3: {
+ if(appSwitch){
+ lcd.cls();
+ lcd.locate(0,0);
+ lcd.printf("Horizontal Level");
+ wait(2);
+ lcd.cls();
+ lcd.locate(0,0);
+ appSwitch=false;
+ }
+ break;}
+ default: {
+ lcd.cls();
+ lcd.locate(0,0);
+ lcd.printf("Error: appIndex out of range - appIndes=%d",appIndex);
+ break;}
+ }
+
+
+ wait(0.1);
+ }
+}
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