File content as of revision 14:c00b7a943fb5:
/* Joystick
Example code of how to read a joystick
https://www.sparkfun.com/products/9032
Craig A. Evans
7 March 2015
*/
#include "mbed.h"
#include "N5110.h"
// change this to alter tolerance of joystick direction
#define DIRECTION_TOLERANCE 0.1
// connections for joystick
DigitalIn button(p17);
AnalogIn xPot(p15);
AnalogIn yPot(p16);
// LCD connections
//vcc, sce, rst, dc, mosi, clk, led
N5110 lcd(p7,p8,p9,p10,p11,p13,p26);
// LCD dimentions
int nx= 84; //screen is 84 pixels across
int ny= 48; // by 48 pixels downwards
int x = 0; // wall starts from the coordinates (0,0)
int y = 0;
int z = 30;
int i=24; // initial coordinates for player object
int j=42;
// timer to regularly read the joystick
Ticker pollJoystick;
// Serial for debug
Serial serial(USBTX,USBRX);
// create enumerated type (0,1,2,3 etc. for direction)
// could be extended for diagonals etc.
enum DirectionName {
UP,
DOWN,
LEFT,
upLeft,
downLeft,
RIGHT,
upRight,
downRight,
CENTRE,
UNKNOWN
};
// struct for Joystick
typedef struct JoyStick Joystick;
struct JoyStick {
float x; // current x value
float x0; // 'centred' x value
float y; // current y value
float y0; // 'centred' y value
int button; // button state (assume pull-down used, so 1 = pressed, 0 = unpressed)
DirectionName direction; // current direction
};
// create struct variable
Joystick joystick;
int printFlag = 0;
// timer function for moving walls
Ticker wallMovement;
Ticker wallMovement2;
Ticker wallMovement3;
int FLAG = 0; // initial value for flags that are used for wall movements
int FLAG2 = 0;
int FLAG3 = 0;
// timer function for menu scroll
Ticker menuMovement;
int menuFlag = 0; //initial value for flag that is used for menu scrolling
int c = 0; // initial value for position of option in menu
LocalFileSystem local("local"); // create local filesystem
// functions for TimeAndDate
void serialISR(); // ISR that is called when serial data is received
void setTime(); // function to set the UNIX time
int setTimeFlag = 0; // flag for ISR
char rxString[16]; // buffer to store received string
// Output to Power LED
PwmOut power(p24);
// Output to Buzzer
PwmOut buz(p21);
// initial case for brightness function
int bright = 0;
// initial cas for volume function
int vol = 0;
// initial value for u (used in songs)
int u = 0;
//frequency array for song
float frequency[]= {880,880,0,0,880,880,0,880,880,0,1047,1047,0,0,440,440,0,0,440,440,0,440,440,0,587,587,0,0,0,0,0};
float frequency2[]= {600,600,400,400,200,0};
// function prototypes
void calibrateJoystick();
void updateJoystick();
void clearCells();
void fallingWall();
void flagForWall();
void flagForWall2();
void flagForWall3();
void menu();
void playGame();
void TimeAndDate();
void writeDataToFile(int data);
void BandVMenu();
void brightness();
void volume();
void tone();
void deadTone();
int main()
{
// set_time(0); // enter unix time then delete from main function to set time
power = 1;
lcd.init();
calibrateJoystick(); // get centred values of joystick
pollJoystick.attach(&updateJoystick,1.0/15.0); // read joystick 10 times per second
wallMovement.attach(&flagForWall,0.2); // call function flagForWall to make flag=1, every 0.1 seconds
wallMovement2.attach(&flagForWall2,0.2); // call function flagForWall2 to make flag=1, every 0.1 seconds
wallMovement3.attach(&flagForWall3,0.2); // call function flagForWall3 to make flag=1, every 0.1 seconds
menu();
}
// read default positions of the joystick to calibrate later readings
void calibrateJoystick()
{
button.mode(PullDown);
// must not move during calibration
joystick.x0 = xPot; // initial positions in the range 0.0 to 1.0 (0.5 if centred exactly)
joystick.y0 = yPot;
}
void updateJoystick()
{
// read current joystick values relative to calibrated values (in range -0.5 to 0.5, 0.0 is centred)
joystick.x = xPot - joystick.x0;
joystick.y = yPot - joystick.y0;
// read button state
joystick.button = button;
// calculate direction depending on x,y values
// tolerance allows a little lee-way in case joystick not exactly in the stated direction
if ( fabs(joystick.y) < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
joystick.direction = CENTRE;
} else if ( joystick.y > DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
joystick.direction = UP;
} else if ( joystick.y < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
joystick.direction = DOWN;
} else if ( joystick.x > DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
joystick.direction = RIGHT;
} else if ( joystick.x < DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
joystick.direction = LEFT;
} else if ( joystick.y > DIRECTION_TOLERANCE && joystick.x > DIRECTION_TOLERANCE) {
joystick.direction = upRight;
} else if ( joystick.y < DIRECTION_TOLERANCE && joystick.x > DIRECTION_TOLERANCE) {
joystick.direction = downRight;
} else if ( joystick.y > DIRECTION_TOLERANCE && joystick.x < DIRECTION_TOLERANCE) {
joystick.direction = upLeft;
} else if ( joystick.y < DIRECTION_TOLERANCE && joystick.x < DIRECTION_TOLERANCE) {
joystick.direction = downLeft;
}
// set flag for printing
printFlag = 1;
}
void clearCells() // turns all cells on the display off
{
// loop through cells, and clear
for (int i = 0; i < nx ; i++) {
for (int j = 0; j < ny ; j++) {
lcd.clearPixel(i,j);
}
}
lcd.refresh(); // must refresh to write buffer display
}
void flagForWall() // flag function for wmoving wall to call later
{
FLAG=1;
}
void flagForWall2() // flag function for wmoving wall to call later
{
FLAG2=1;
}
void flagForWall3() // flag function for moving wall to call later
{
FLAG3=1;
}
void menu ()
{
int m = 0;
//serial.attach(&serialISR); // attach serial ISR
char buffer[14]; // buffer used to store time string
char buffer2[14]; // buffer used to store time string
while(1) {
clearCells();
time_t seconds = time(NULL); // get current time
// format time into a string (time and date)
strftime(buffer, 14 , "%H:%M", localtime(&seconds));
strftime(buffer2, 14, "%d/%m", localtime(&seconds));
lcd.printString(buffer,26,4); // show time on lcd screen
if ((joystick.direction == RIGHT)||(joystick.direction == upRight)||(joystick.direction == downRight)) {
m++;
}
if ((joystick.direction == LEFT)||(joystick.direction == upLeft)||(joystick.direction == downLeft)) {
m--;
}
if(m > 2) {
m = 0;
}
if(m < 0) {
m = 2;
}
switch (m) {
case 0 :
lcd.printString("< Play Game >",0,2);
wait(0.3);
while(1) {
if(button == 1) {
clearCells();
playGame();
break;
} else {
break;
}
}
break;
case 1 :
lcd.printString("< Settings >",0,2);
wait(0.3);
while(1) {
if(button == 1) {
clearCells();
BandVMenu();
break;
} else {
break;
}
}
break;
case 2 :
lcd.printString("< HighScores >",0,2);
wait(0.3);
while(1) {
if(button == 1) {
clearCells();
lcd.printString("scoring",0,2); //enter function to commence here
wait(3.0);
break;
} else {
break;
}
}
break;
}
}
}
void playGame()
{
int i=24; // initial coordinates for player object
int j=42;
int x = 0; // wall starts from the coordinates (0,0)
int y = 0;
int z = 30;
int score = 0;
int a = 0;
int b = 47;
int d = 30;
int f = 0;
int g = 0;
int h = 24;
int q = 83;
int w = 0;
int e = 24;
lcd.printString("GO!",35,2);
wait(1);
while(1) {
tone();
lcd.drawRect(i,j,2,2,0);
clearCells();
lcd.drawLine(x,y,z,y,1); // draws a line at the top of the screen to symbolise a wall
lcd.drawLine(z+10,y,83,y,1); // there is a gap in the wall which is 10 pixels wide and the objective of the game is to pass through it
if(FLAG==1) {
FLAG=0;
y++; // everytime the flag changes to one it is reset and the wall moves down by one pixel
}
if(y > 47) { // when the wall reaches the bottom a new wall is generated at the top and with another 10 pixel gap in a different place
y = 0;
z = rand()%74;
score++;
}
if(( score > 1)&&(score < 5)) {
lcd.drawLine(a,b,d,b,1); // draws a line at the top of the screen to symbolise a wall
lcd.drawLine(d+10,b,83,b,1); // there is a gap in the wall which is 10 pixels wide and the objective of the game is to pass through it
if(FLAG3==1) {
FLAG3=0;
b--; // everytime the flag changes to one it is reset and the wall moves down by one pixel
}
}
if(b < 0) { // when the wall reaches the bottom a new wall is generated at the top and with another 10 pixel gap in a different place
b = 47;
d = rand()%74;
}
if(( score > 5)&&(score < 9)) {
lcd.drawLine(f,g,f,h,1);
lcd.drawLine(f,h+10,f,47,1);
if(FLAG2==1) {
FLAG2=0;
f++; // everytime the flag changes to one it is reset and the wall moves down by one pixel
}
}
if( f > 83) { // when the wall reaches the bottom a new wall is generated at the top and with another 10 pixel gap in a different place
f = 0;
h = rand()%38;
}
if(( score > 10)&&(score < 15)) {
lcd.drawLine(q,w,q,e,1); // draws a line at the top of the screen to symbolise a wall
lcd.drawLine(q,e+10,q,47,1); // there is a gap in the wall which is 10 pixels wide and the objective of the game is to pass through it
if(FLAG3==1) {
FLAG3=0;
q--; // everytime the flag changes to one it is reset and the wall moves down by one pixel
}
}
if(q < 0) { // when the wall reaches the bottom a new wall is generated at the top and with another 10 pixel gap in a different place
q = 83;
e = rand()%38;
}
if( score > 15) {
lcd.drawLine(q,w,q,e,1); // draws a line at the top of the screen to symbolise a wall
lcd.drawLine(q,e+10,q,47,1); // there is a gap in the wall which is 10 pixels wide and the objective of the game is to pass through it
if(FLAG3==1) {
FLAG3=0;
q--; // everytime the flag changes to one it is reset and the wall moves down by one pixel
}
}
if( score > 20) {
lcd.drawLine(a,b,d,b,1); // draws a line at the top of the screen to symbolise a wall
lcd.drawLine(d+10,b,83,b,1); // there is a gap in the wall which is 10 pixels wide and the objective of the game is to pass through it
if(FLAG2==1) {
FLAG2=0;
b--; // everytime the flag changes to one it is reset and the wall moves down by one pixel
}
}
if( j > 45) { // rules to prevent player object going off the screen
j = 45;
}
if( i > 81) {
i = 81;
}
if( j < 0) {
j = 0;
}
if( i < 0) {
i = 0;
}
if (printFlag) { // if flag set, clear flag and implicate joystick functions
printFlag = 0;
// check joystick direction
if (joystick.direction == UP) {
j--;
}
if (joystick.direction == DOWN) {
j++;
}
if (joystick.direction == LEFT) {
i++;
}
if (joystick.direction == RIGHT) {
i--;
}
if (joystick.direction == upRight) {
j--;
i--;
}
if (joystick.direction == downRight) {
j++;
i--;
}
if (joystick.direction == upLeft) {
j--;
i++;
}
if (joystick.direction == downLeft) {
j++;
i++;
}
if (joystick.direction == CENTRE) {
i=i;
j=j;
}
if (lcd.getPixel(i,j-1)) {
writeDataToFile(score); // write current value to disk
clearCells();
int m = 1;
lcd.printString("game over",1,2);
deadTone();
clearCells();
lcd.printString("Play again?",0,0);
lcd.printString("Yes No",0,3);
while(1) {
clearCells();
if ((joystick.direction == RIGHT)||(joystick.direction == upRight)||(joystick.direction == downRight)) {
m--;
}
if ((joystick.direction == LEFT)||(joystick.direction == upLeft)||(joystick.direction == downLeft)) {
m++;
}
if(m > 2) {
m = 2;
}
if(m < 0) {
m = 0;
}
switch (m) {
case 0 :
lcd.printString("YES",0,3);
while(1) {
if(button == 1) {
clearCells();
playGame();
break;
} else {
break;
}
}
break;
case 1 :
lcd.printString("Play again?",0,0);
lcd.printString("Yes No",0,3);
break;
case 2 :
lcd.printString("NO",70,3);
while(1) {
if(button == 1) {
clearCells();
lcd.printString("Leaving Game",0,2); //enter function to commence here
wait(1.0);
menu();
break;
} else {
break;
}
}
break;
}
}
}
if (lcd.getPixel(i+1,j-1)) {
writeDataToFile(score); // write current value to disk
clearCells();
int m = 1;
lcd.printString("game over",1,2);
deadTone();
clearCells();
lcd.printString("Play again?",0,0);
lcd.printString("Yes No",0,3);
while(1) {
clearCells();
if ((joystick.direction == RIGHT)||(joystick.direction == upRight)||(joystick.direction == downRight)) {
m--;
}
if ((joystick.direction == LEFT)||(joystick.direction == upLeft)||(joystick.direction == downLeft)) {
m++;
}
if(m > 2) {
m = 2;
}
if(m < 0) {
m = 0;
}
switch (m) {
case 0 :
lcd.printString("YES",0,3);
while(1) {
if(button == 1) {
clearCells();
playGame();
break;
} else {
break;
}
}
break;
case 1 :
lcd.printString("Play again?",0,0);
lcd.printString("Yes No",0,3);
break;
case 2 :
lcd.printString("NO",70,3);
while(1) {
if(button == 1) {
clearCells();
lcd.printString("Leaving Game",0,2); //enter function to commence here
wait(1.0);
menu();
break;
} else {
break;
}
}
break;
}
}
}
if (lcd.getPixel(i+2,j-1)) {
writeDataToFile(score); // write current value to disk
clearCells();
int m = 1;
lcd.printString("game over",1,2);
deadTone();
clearCells();
lcd.printString("Play again?",0,0);
lcd.printString("Yes No",0,3);
while(1) {
clearCells();
if ((joystick.direction == RIGHT)||(joystick.direction == upRight)||(joystick.direction == downRight)) {
m--;
}
if ((joystick.direction == LEFT)||(joystick.direction == upLeft)||(joystick.direction == downLeft)) {
m++;
}
if(m > 2) {
m = 2;
}
if(m < 0) {
m = 0;
}
switch (m) {
case 0 :
lcd.printString("YES",0,3);
while(1) {
if(button == 1) {
clearCells();
playGame();
break;
} else {
break;
}
}
break;
case 1 :
lcd.printString("Play again?",0,0);
lcd.printString("Yes No",0,3);
break;
case 2 :
lcd.printString("NO",70,3);
while(1) {
if(button == 1) {
clearCells();
lcd.printString("Leaving Game",0,2); //enter function to commence here
wait(1.0);
menu();
break;
} else {
break;
}
}
break;
}
}
}
if (lcd.getPixel(i,j)) {
writeDataToFile(score); // write current value to disk
clearCells();
int m = 1;
lcd.printString("game over",1,2);
deadTone();
clearCells();
lcd.printString("Play again?",0,0);
lcd.printString("Yes No",0,3);
while(1) {
clearCells();
if ((joystick.direction == RIGHT)||(joystick.direction == upRight)||(joystick.direction == downRight)) {
m--;
}
if ((joystick.direction == LEFT)||(joystick.direction == upLeft)||(joystick.direction == downLeft)) {
m++;
}
if(m > 2) {
m = 2;
}
if(m < 0) {
m = 0;
}
switch (m) {
case 0 :
lcd.printString("YES",0,3);
while(1) {
if(button == 1) {
clearCells();
playGame();
break;
} else {
break;
}
}
break;
case 1 :
lcd.printString("Play again?",0,0);
lcd.printString("Yes No",0,3);
break;
case 2 :
lcd.printString("NO",70,3);
while(1) {
if(button == 1) {
clearCells();
lcd.printString("Leaving Game",0,2); //enter function to commence here
wait(1.0);
menu();
break;
} else {
break;
}
}
break;
}
}
}
if (lcd.getPixel(i+1,j)) {
writeDataToFile(score); // write current value to disk
clearCells();
int m = 1;
lcd.printString("game over",1,2);
deadTone();
clearCells();
lcd.printString("Play again?",0,0);
lcd.printString("Yes No",0,3);
while(1) {
clearCells();
if ((joystick.direction == RIGHT)||(joystick.direction == upRight)||(joystick.direction == downRight)) {
m--;
}
if ((joystick.direction == LEFT)||(joystick.direction == upLeft)||(joystick.direction == downLeft)) {
m++;
}
if(m > 2) {
m = 2;
}
if(m < 0) {
m = 0;
}
switch (m) {
case 0 :
lcd.printString("YES",0,3);
while(1) {
if(button == 1) {
clearCells();
playGame();
break;
} else {
break;
}
}
break;
case 1 :
lcd.printString("Play again?",0,0);
lcd.printString("Yes No",0,3);
break;
case 2 :
lcd.printString("NO",70,3);
while(1) {
if(button == 1) {
clearCells();
lcd.printString("Leaving Game",0,2); //enter function to commence here
wait(1.0);
menu();
break;
} else {
break;
}
}
break;
}
}
}
if (lcd.getPixel(i+2,j)) {
writeDataToFile(score); // write current value to disk
clearCells();
int m = 1;
lcd.printString("game over",1,2);
deadTone();
clearCells();
lcd.printString("Play again?",0,0);
lcd.printString("Yes No",0,3);
while(1) {
clearCells();
if ((joystick.direction == RIGHT)||(joystick.direction == upRight)||(joystick.direction == downRight)) {
m--;
}
if ((joystick.direction == LEFT)||(joystick.direction == upLeft)||(joystick.direction == downLeft)) {
m++;
}
if(m > 2) {
m = 2;
}
if(m < 0) {
m = 0;
}
switch (m) {
case 0 :
lcd.printString("YES",0,3);
while(1) {
if(button == 1) {
clearCells();
playGame();
break;
} else {
break;
}
}
break;
case 1 :
lcd.printString("Play again?",0,0);
lcd.printString("Yes No",0,3);
break;
case 2 :
lcd.printString("NO",70,3);
while(1) {
if(button == 1) {
clearCells();
lcd.printString("Leaving Game",0,2); //enter function to commence here
wait(1.0);
menu();
break;
} else {
break;
}
}
break;
}
}
}
}
}
}
// Brightness and volume menu function
void BandVMenu()
{
int t = 0;
while(1) {
wait(0.2);
clearCells();
if ((joystick.direction == RIGHT)||(joystick.direction == upRight)||(joystick.direction == downRight)) {
t++;
}
if ((joystick.direction == LEFT)||(joystick.direction == upLeft)||(joystick.direction == downLeft)) {
t--;
}
if(t > 1) {
t = 0;
}
if(t < 0) {
t = 1;
}
if(joystick.direction == DOWN) {
clearCells();
lcd.printString("Returning",18,2);
lcd.printString("to Menu",24,3);
wait(0.5);
menu();
}
switch (t) {
case 0 :
lcd.printString("< Brightness >",0,2);
while(1) {
if(button == 1) {
brightness();
break;
} else {
break;
}
}
break;
case 1 :
lcd.printString("< Volume >",0,2);
while(1) {
if(button == 1) {
volume();
break;
} else {
break;
}
}
break;
}
}
}
void brightness()
{
while(1) {
wait(0.2);
clearCells();
if ((joystick.direction == RIGHT)||(joystick.direction == upRight)||(joystick.direction == downRight)) {
bright--;
}
if ((joystick.direction == LEFT)||(joystick.direction == upLeft)||(joystick.direction == downLeft)) {
bright++;
}
if(bright > 3) {
bright = 3;
}
if(bright < -3) {
bright = -3;
}
switch (bright) {
case 0 :
lcd.printString(" Brightness ",0,2);
lcd.printString(" ||||||",0,4);
lcd.setBrightness(0.6);
while(1) {
if(button == 1) {
BandVMenu();
break;
} else {
break;
}
}
break;
case 1 :
lcd.printString(" Brightness ",0,2);
lcd.printString(" ||||||||",0,4);
lcd.setBrightness(0.8);
while(1) {
if(button == 1) {
BandVMenu();
break;
} else {
break;
}
}
break;
case 2 :
lcd.printString(" Brightness ",0,2);
lcd.printString(" ||||||||||",0,4);
lcd.setBrightness(0.9);
while(1) {
if(button == 1) {
BandVMenu();
break;
} else {
break;
}
}
break;
case 3 :
lcd.printString(" Brightness ",0,2);
lcd.printString(" ||||||||||||",0,4);
lcd.setBrightness(1);
while(1) {
if(button == 1) {
BandVMenu();
break;
} else {
break;
}
}
break;
case -1 :
lcd.printString(" Brightness ",0,2);
lcd.printString(" ||||",0,4);
lcd.setBrightness(0.4);
while(1) {
if(button == 1) {
BandVMenu();
break;
} else {
break;
}
}
break;
case -2 :
lcd.printString(" Brightness ",0,2);
lcd.printString(" ||",0,4);
lcd.setBrightness(0.2);
while(1) {
if(button == 1) {
BandVMenu();
break;
} else {
break;
}
}
break;
case -3 :
lcd.printString(" Brightness ",0,2);
lcd.setBrightness(0);
while(1) {
if(button == 1) {
BandVMenu();
break;
} else {
break;
}
}
break;
}
}
}
void volume()
{
while(1) {
wait(0.2);
clearCells();
if ((joystick.direction == RIGHT)||(joystick.direction == upRight)||(joystick.direction == downRight)) {
vol--;
}
if ((joystick.direction == LEFT)||(joystick.direction == upLeft)||(joystick.direction == downLeft)) {
vol++;
}
if(vol > 3) {
vol = 3;
}
if(vol < -3) {
vol = -3;
}
switch (vol) {
case 0 :
lcd.printString(" Volume ",0,2);
lcd.printString(" ||||||",0,4);
while(1) {
if(button == 1) {
BandVMenu();
break;
} else {
break;
}
}
break;
case 1 :
lcd.printString(" Volume ",0,2);
lcd.printString(" ||||||||",0,4);
while(1) {
if(button == 1) {
BandVMenu();
break;
} else {
break;
}
}
break;
case 2 :
lcd.printString(" Volume ",0,2);
lcd.printString(" ||||||||||",0,4);
while(1) {
if(button == 1) {
BandVMenu();
break;
} else {
break;
}
}
break;
case 3 :
lcd.printString(" Volume ",0,2);
lcd.printString(" ||||||||||||",0,4);
while(1) {
if(button == 1) {
BandVMenu();
break;
} else {
break;
}
}
break;
case -1 :
lcd.printString(" Volume ",0,2);
lcd.printString(" ||||",0,4);
while(1) {
if(button == 1) {
BandVMenu();
break;
} else {
break;
}
}
break;
case -2 :
lcd.printString(" Volume ",0,2);
lcd.printString(" ||",0,4);
while(1) {
if(button == 1) {
BandVMenu();
break;
} else {
break;
}
}
break;
case -3 :
lcd.printString(" Volume ",0,2);
lcd.printString(" MUTE",0,4);
while(1) {
if(button == 1) {
BandVMenu();
break;
} else {
break;
}
}
break;
}
}
}
void writeDataToFile(int data)
{
FILE *fp = fopen("/local/score.txt", "a"); // open 'score.txt' for appending
// if the file doesn't exist it is created, if it exists, data is appended to the end
fprintf(fp,"%i\n",data); // print string to file
fclose(fp); // close file
}
void tone()
{
if(FLAG3==1) {
FLAG3 = 0;
buz.period(1/(frequency[u])); // set PWM period
buz=0.7;
u++;
}
if( u > 30) {
u = 0;
}
}
void deadTone()
{
int l = 0;
while(1) {
if(FLAG3==1) {
FLAG3 = 0;
buz.period(1/(frequency2[l])); // set PWM period
buz=0.7;
l++;
}
if( l > 6) {
break;
}
}
}