Michael Swan / Mbed 2 deprecated LaserTag

Mbed based laser tag system using IR LEDs and receivers

Dependencies:   mbed fwdcrc16library PinDetect TextLCD

This project was the result of an embedded systems design course held in 2013.

main.cpp@2:15134f79b400, 2013-03-18 (annotated)

Committer:
Mike951
Date:
Mon Mar 18 06:19:15 2013 +0000
Revision:
2:15134f79b400
Parent:
1:24f46931d010
Child:
3:752f5f63f783
Basic hit and firing functionality implemented. Still needs full statistic display and firing to be coded.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Mike951 0:69e5ee3b618d 1 #include "mbed.h"
Mike951 0:69e5ee3b618d 2 #include "TextLCD.h"
Mike951 0:69e5ee3b618d 3 #include "PinDetect.h"
Mike951 0:69e5ee3b618d 4 #include "crc16.h"
Mike951 0:69e5ee3b618d 5
Mike951 0:69e5ee3b618d 6
Mike951 1:24f46931d010 7 PinDetect sw2(P0_11); //switch2 debounced input
Mike951 1:24f46931d010 8 PinDetect sw3(P0_10); //switch3 debounced input
Mike951 0:69e5ee3b618d 9 TextLCD lcd(P1_15, P1_16, P1_19, P1_20, P1_21, P1_22); // rs, e, d4-d7 led pins:4,6,11-14
Mike951 0:69e5ee3b618d 10 DigitalOut LB(P1_31); //lcd backlight
Mike951 0:69e5ee3b618d 11 DigitalOut LP(P1_29); //lcd power
Mike951 0:69e5ee3b618d 12 DigitalOut led1(P0_22); //on-board led ds1
Mike951 0:69e5ee3b618d 13 DigitalOut led2(P0_23); //on-board led ds2
Mike951 2:15134f79b400 14 Serial IR(P1_27,P1_26); //IR transmitter and receiver output and input control P1_27 controls IR diode, P1_26 controls IR reciever
Mike951 0:69e5ee3b618d 15 PwmOut Square_Gen(P1_25); //square wave generator for IR led
Mike951 1:24f46931d010 16 Timeout stats; //used for displaying text for limited periods of time
Mike951 2:15134f79b400 17 Timeout shot_time; //used to ensure shots take place in a brief period of time
Mike951 2:15134f79b400 18 Timeout flash; //used to flash leds and backlight when shooting or tagging
Mike951 2:15134f79b400 19 Timer timer; //used as seconds for reset timer
Mike951 1:24f46931d010 20 Ticker clock_tick; //used with timer for minutes of reset timer
Mike951 1:24f46931d010 21 unsigned mins = 0; //global variable for minutes in game, since ticker interrupt cannot attach functions that have parameters
Mike951 1:24f46931d010 22 bool btn2 = false; //global variable for sw2, since the PinDetect interrupt cannot attach functions that have parameters
Mike951 1:24f46931d010 23 bool btn3 = false; //global variable for sw3, since the PinDetect interrupt cannot attach functions that have parameters
Mike951 2:15134f79b400 24 bool done = false; //global variable for timeout, since TimeOut interrupt cannot attach functions that have parameters
Mike951 2:15134f79b400 25 bool taggable = false; //global variable for whether serial received input will be used or not
Mike951 2:15134f79b400 26 char id_rx[15]; //global variable for received ID. Required to use serial interrupt correctly
Mike951 2:15134f79b400 27 unsigned id_pos = 0; //global variable for recieved ID array location. Also required for serial interrupt.
Mike951 0:69e5ee3b618d 28
Mike951 1:24f46931d010 29 void minutes()
Mike951 1:24f46931d010 30 {
Mike951 1:24f46931d010 31 mins ++;
Mike951 1:24f46931d010 32 timer.reset();
Mike951 1:24f46931d010 33 }
Mike951 1:24f46931d010 34
Mike951 2:15134f79b400 35 void shot_check()
Mike951 2:15134f79b400 36 {
Mike951 2:15134f79b400 37 id_pos = 0; //resets current id
Mike951 2:15134f79b400 38 //sets 15th byte of array to NULL
Mike951 2:15134f79b400 39 id_rx[14] = NULL; //if this byte is changed from NULL, it will signify that the player has been successfully tagged
Mike951 2:15134f79b400 40 LB = 0; //ensure backlight is back off if it was turned on earlier
Mike951 2:15134f79b400 41 }
Mike951 2:15134f79b400 42
Mike951 2:15134f79b400 43 /* Flashing interrupt
Mike951 2:15134f79b400 44 Intended to be used with a timeout object to flash lights when shot or shooting
Mike951 2:15134f79b400 45 */
Mike951 2:15134f79b400 46 void flasher()
Mike951 2:15134f79b400 47 {
Mike951 2:15134f79b400 48 LB = 0;
Mike951 2:15134f79b400 49 led1 = !led1;
Mike951 2:15134f79b400 50 led2 = !led2;
Mike951 2:15134f79b400 51 }
Mike951 2:15134f79b400 52
Mike951 0:69e5ee3b618d 53 void callback()
Mike951 0:69e5ee3b618d 54 {
Mike951 2:15134f79b400 55 // Note: you need to actually read from the serial buffer to clear the RX interrupt
Mike951 2:15134f79b400 56 if (!taggable)
Mike951 2:15134f79b400 57 {
Mike951 2:15134f79b400 58 IR.getc(); //ensures no extra buffering left over when player is not taggable
Mike951 2:15134f79b400 59 return;
Mike951 2:15134f79b400 60 }
Mike951 2:15134f79b400 61
Mike951 2:15134f79b400 62 id_rx[id_pos] = IR.getc(); //place received character into array
Mike951 2:15134f79b400 63 if (id_pos == 0) //starts a timer for the time in which receiver must receive a full id
Mike951 0:69e5ee3b618d 64 {
Mike951 2:15134f79b400 65 shot_time.attach(&shot_check, 0.5);
Mike951 0:69e5ee3b618d 66 }
Mike951 2:15134f79b400 67 else if(id_pos >= 14)
Mike951 0:69e5ee3b618d 68 {
Mike951 2:15134f79b400 69 id_pos = 0; //ensures no array overflows
Mike951 2:15134f79b400 70 shot_time.detach(); //ensures no further action upon array until next time tagged
Mike951 0:69e5ee3b618d 71 }
Mike951 2:15134f79b400 72 led1 = !led1; //flashes lights when IR is received
Mike951 2:15134f79b400 73 led2 = !led1;
Mike951 2:15134f79b400 74 LB = !LB; //flashes LCD backlight when IR received
Mike951 2:15134f79b400 75 id_pos ++; //increment to next array position for id
Mike951 2:15134f79b400 76 return;
Mike951 0:69e5ee3b618d 77 }
Mike951 0:69e5ee3b618d 78
Mike951 1:24f46931d010 79 void btn2Pressed()
Mike951 0:69e5ee3b618d 80 {
Mike951 0:69e5ee3b618d 81 led1 = !led1;
Mike951 1:24f46931d010 82 btn2 = true;
Mike951 0:69e5ee3b618d 83 }
Mike951 0:69e5ee3b618d 84
Mike951 1:24f46931d010 85 void btn3Pressed()
Mike951 0:69e5ee3b618d 86 {
Mike951 0:69e5ee3b618d 87 led2 = !led2;
Mike951 1:24f46931d010 88 btn3 = true;
Mike951 0:69e5ee3b618d 89
Mike951 0:69e5ee3b618d 90 }
Mike951 0:69e5ee3b618d 91
Mike951 1:24f46931d010 92 void finish_disp ()
Mike951 0:69e5ee3b618d 93 {
Mike951 0:69e5ee3b618d 94 done = true;
Mike951 0:69e5ee3b618d 95 return;
Mike951 0:69e5ee3b618d 96 }
Mike951 0:69e5ee3b618d 97
Mike951 1:24f46931d010 98 /*Error Routine.
Mike951 1:24f46931d010 99 Displays "ERROR" on LCD screen and flashes leds
Mike951 1:24f46931d010 100 when called for an indefinite period of time
Mike951 1:24f46931d010 101 */
Mike951 1:24f46931d010 102 void error_custom ()
Mike951 1:24f46931d010 103 {
Mike951 1:24f46931d010 104 lcd.cls();
Mike951 1:24f46931d010 105 lcd.printf("ERROR");
Mike951 1:24f46931d010 106 led1 = 0;
Mike951 1:24f46931d010 107 led2 = 1;
Mike951 1:24f46931d010 108 while(1)
Mike951 1:24f46931d010 109 {
Mike951 1:24f46931d010 110 led1 = !led1;
Mike951 1:24f46931d010 111 led2 = !led2;
Mike951 1:24f46931d010 112 wait(0.5);
Mike951 1:24f46931d010 113 }
Mike951 1:24f46931d010 114 }
Mike951 1:24f46931d010 115 /*Alphanumeric selector
Mike951 1:24f46931d010 116 Used with char_sel function in order to select a number 0-9 or letters A-Z through user input.
Mike951 1:24f46931d010 117 Returns a char.
Mike951 1:24f46931d010 118 */
Mike951 1:24f46931d010 119 char alpha_num_sel (bool number)
Mike951 1:24f46931d010 120 {
Mike951 1:24f46931d010 121 char n0 = '0';
Mike951 1:24f46931d010 122 char n_tmp = '0';
Mike951 1:24f46931d010 123 unsigned incr = 0; //used to increment characters between 0-9 or A-Z
Mike951 1:24f46931d010 124 unsigned mod;
Mike951 1:24f46931d010 125 if (number)
Mike951 1:24f46931d010 126 {
Mike951 1:24f46931d010 127 lcd.cls();
Mike951 1:24f46931d010 128 lcd.printf("Pick\nNumber:%c",n_tmp);
Mike951 1:24f46931d010 129 n0 = '0';
Mike951 1:24f46931d010 130 n_tmp = n0;
Mike951 2:15134f79b400 131 mod = 11; //modulus for character range
Mike951 1:24f46931d010 132 }
Mike951 1:24f46931d010 133 else
Mike951 1:24f46931d010 134 {
Mike951 1:24f46931d010 135 lcd.cls();
Mike951 1:24f46931d010 136 n0 = 'A';
Mike951 1:24f46931d010 137 n_tmp = n0;
Mike951 1:24f46931d010 138 lcd.printf("Pick\nLetter:%c",n_tmp);
Mike951 1:24f46931d010 139 mod = 26;
Mike951 1:24f46931d010 140 }
Mike951 1:24f46931d010 141 while(1)
Mike951 1:24f46931d010 142 {
Mike951 1:24f46931d010 143 while(!btn2 && !btn3) //waits until button input received
Mike951 1:24f46931d010 144 {
Mike951 1:24f46931d010 145 wait(0.05);
Mike951 1:24f46931d010 146 }
Mike951 1:24f46931d010 147 if(btn3)
Mike951 1:24f46931d010 148 {
Mike951 1:24f46931d010 149 btn3 = false;
Mike951 1:24f46931d010 150 btn2 = false; //if both butons pressed, it just selects the current character
Mike951 1:24f46931d010 151 return (n_tmp);
Mike951 1:24f46931d010 152 }
Mike951 1:24f46931d010 153 else if(btn2)
Mike951 1:24f46931d010 154 {
Mike951 1:24f46931d010 155 btn2 = false;
Mike951 1:24f46931d010 156 incr ++;
Mike951 2:15134f79b400 157 incr = incr % mod; //ensures that numbers stay within the 0-9/A-Z range
Mike951 2:15134f79b400 158 n_tmp = n0 + incr; //increment current character selected
Mike951 2:15134f79b400 159 if (incr == 10 && number) //feature addition to allow for space entry
Mike951 2:15134f79b400 160 {
Mike951 2:15134f79b400 161 n_tmp = ' ';
Mike951 2:15134f79b400 162 }
Mike951 1:24f46931d010 163 lcd.cls();
Mike951 1:24f46931d010 164 if(number)
Mike951 1:24f46931d010 165 {
Mike951 1:24f46931d010 166 lcd.printf("Pick\nNumber:%c",n_tmp); //displays current number
Mike951 1:24f46931d010 167 }
Mike951 1:24f46931d010 168 else
Mike951 1:24f46931d010 169 {
Mike951 1:24f46931d010 170 lcd.printf("Pick\nLetter:%c",n_tmp); //displays current letter
Mike951 1:24f46931d010 171 }
Mike951 1:24f46931d010 172 }
Mike951 1:24f46931d010 173 else
Mike951 1:24f46931d010 174 {
Mike951 1:24f46931d010 175 error_custom();
Mike951 1:24f46931d010 176 }
Mike951 1:24f46931d010 177
Mike951 1:24f46931d010 178 }
Mike951 1:24f46931d010 179 }
Mike951 1:24f46931d010 180 /*Character Selection
Mike951 1:24f46931d010 181 Used with setup() function in order to pick a character A-Z and number 0-9
Mike951 1:24f46931d010 182 for use as part of user id and/or team. Passed a 0 if selecting team letter (A-Z),
Mike951 1:24f46931d010 183 otherwise will select player id letter
Mike951 1:24f46931d010 184 */
Mike951 1:24f46931d010 185 char char_sel (bool player)
Mike951 1:24f46931d010 186 {
Mike951 1:24f46931d010 187 if (player)
Mike951 1:24f46931d010 188 {
Mike951 1:24f46931d010 189 lcd.cls();
Mike951 1:24f46931d010 190 lcd.printf("A-Z? or\n0-9?");
Mike951 1:24f46931d010 191 while(!btn2 && !btn3) //waits until button input received
Mike951 1:24f46931d010 192 {
Mike951 1:24f46931d010 193 wait(0.05);
Mike951 1:24f46931d010 194 }
Mike951 1:24f46931d010 195 if(btn2) //if select button pressed, goes through numerical selection
Mike951 1:24f46931d010 196 {
Mike951 1:24f46931d010 197 btn2 = false;
Mike951 1:24f46931d010 198 btn3 = false; //if both buttons pressed at the same time, it just does numerical selection
Mike951 1:24f46931d010 199
Mike951 1:24f46931d010 200 return(alpha_num_sel(1));
Mike951 1:24f46931d010 201 }
Mike951 1:24f46931d010 202 else if(btn3)
Mike951 1:24f46931d010 203 {
Mike951 1:24f46931d010 204 btn3 = false; //pressing the option button in this case is the same as selecting a team
Mike951 1:24f46931d010 205 }
Mike951 1:24f46931d010 206 else
Mike951 1:24f46931d010 207 {
Mike951 1:24f46931d010 208 error_custom(); //if you somehow make it here without pressing buttons, it will throw an error
Mike951 1:24f46931d010 209 }
Mike951 1:24f46931d010 210 }
Mike951 1:24f46931d010 211 return(alpha_num_sel(0)); //returns capital alpha character for id or team by calling selection function
Mike951 1:24f46931d010 212 }
Mike951 1:24f46931d010 213
Mike951 1:24f46931d010 214
Mike951 1:24f46931d010 215 /*Setup Routine.
Mike951 1:24f46931d010 216 Sets the user id for use in-game.
Mike951 1:24f46931d010 217 Function must be passed an array of characters of size 15
Mike951 1:24f46931d010 218 in order to work correctly.
Mike951 1:24f46931d010 219 */
Mike951 1:24f46931d010 220 void setup (char* ID_array)
Mike951 1:24f46931d010 221 {
Mike951 1:24f46931d010 222 unsigned size = 1;
Mike951 1:24f46931d010 223
Mike951 1:24f46931d010 224 lcd.cls();
Mike951 1:24f46931d010 225 lcd.printf("ID Size?\n%u",size);
Mike951 1:24f46931d010 226 while(1)
Mike951 1:24f46931d010 227 {
Mike951 1:24f46931d010 228 while(!btn2 && !btn3) //waits until button input received
Mike951 1:24f46931d010 229 {
Mike951 1:24f46931d010 230 wait(0.05); //ensures buttons cannot be pressed extremely fast
Mike951 1:24f46931d010 231 }
Mike951 1:24f46931d010 232 if(btn2 && btn3) //routine to set size of player id in bytes
Mike951 1:24f46931d010 233 {
Mike951 1:24f46931d010 234 btn2 = false; //handling for simultaneous button pressing
Mike951 1:24f46931d010 235 btn3 = false;
Mike951 1:24f46931d010 236 size++;
Mike951 1:24f46931d010 237 if (size > 12)
Mike951 1:24f46931d010 238 {
Mike951 1:24f46931d010 239 size = 1; //ensures size cannot be greater than 12 or less than 1
Mike951 1:24f46931d010 240 }
Mike951 1:24f46931d010 241 break; //sets size to whatever current size is +1 and moves on
Mike951 1:24f46931d010 242 }
Mike951 1:24f46931d010 243 else if(btn2) //increases size or loops back to 1, displays current size
Mike951 1:24f46931d010 244 {
Mike951 1:24f46931d010 245 btn2 = false;
Mike951 1:24f46931d010 246 size++;
Mike951 1:24f46931d010 247 if (size > 12)
Mike951 1:24f46931d010 248 {
Mike951 1:24f46931d010 249 size = 1; //ensures size cannot be greater than 12 or less than 1
Mike951 1:24f46931d010 250 }
Mike951 1:24f46931d010 251 lcd.cls();
Mike951 1:24f46931d010 252 lcd.printf("ID Size?\n%u",size); //displays current size
Mike951 1:24f46931d010 253 }
Mike951 1:24f46931d010 254 else if(btn3)
Mike951 1:24f46931d010 255 {
Mike951 1:24f46931d010 256 btn3 = false; //selects current size
Mike951 1:24f46931d010 257 break;
Mike951 1:24f46931d010 258 }
Mike951 1:24f46931d010 259 else
Mike951 1:24f46931d010 260 {
Mike951 1:24f46931d010 261 error_custom(); //error called if unexpected output
Mike951 1:24f46931d010 262 }
Mike951 1:24f46931d010 263 }
Mike951 1:24f46931d010 264
Mike951 1:24f46931d010 265 for (unsigned j = 0; j < size; j ++) //sets player id
Mike951 1:24f46931d010 266 {
Mike951 1:24f46931d010 267 ID_array[j] = char_sel(1);
Mike951 1:24f46931d010 268 }
Mike951 1:24f46931d010 269 for (unsigned j = size; j < 12; j ++)
Mike951 1:24f46931d010 270 {
Mike951 1:24f46931d010 271 ID_array[j] = ' '; //fill unused characters with spaces
Mike951 1:24f46931d010 272 }
Mike951 1:24f46931d010 273 lcd.cls();
Mike951 1:24f46931d010 274 lcd.printf("On team?\n Y or N");
Mike951 1:24f46931d010 275 while(!btn2 && !btn3) //waits until button input received
Mike951 1:24f46931d010 276 {
Mike951 1:24f46931d010 277 wait(0.05); //ensures buttons cannot be pressed extremely fast
Mike951 1:24f46931d010 278 }
Mike951 1:24f46931d010 279 if(btn3)
Mike951 1:24f46931d010 280 {
Mike951 1:24f46931d010 281 btn3 = false;
Mike951 1:24f46931d010 282 btn2 = false; //you're on a team if you press both buttons
Mike951 1:24f46931d010 283 ID_array[12] = char_sel(0); //sets team letter
Mike951 1:24f46931d010 284 }
Mike951 1:24f46931d010 285 else if (btn2)
Mike951 1:24f46931d010 286 {
Mike951 1:24f46931d010 287 btn2 = false;
Mike951 1:24f46931d010 288 ID_array[12] = '0'; //sets team to 'zero', indicating no team
Mike951 1:24f46931d010 289 }
Mike951 1:24f46931d010 290 else
Mike951 1:24f46931d010 291 {
Mike951 1:24f46931d010 292 error_custom(); //throws an error if you somehow get here)
Mike951 1:24f46931d010 293 }
Mike951 1:24f46931d010 294 lcd.cls();
Mike951 1:24f46931d010 295 lcd.printf("Your ID\n is:");
Mike951 1:24f46931d010 296 wait(1.5);
Mike951 1:24f46931d010 297 lcd.cls();
Mike951 1:24f46931d010 298 for(unsigned j = 0; j <= 12; j++) //prints out player id and team
Mike951 1:24f46931d010 299 {
Mike951 1:24f46931d010 300 lcd.printf("%c",ID_array[j]);
Mike951 1:24f46931d010 301 if (j == 7)
Mike951 1:24f46931d010 302 {
Mike951 1:24f46931d010 303 lcd.printf("\n"); //puts in a new line if id is longer than eight characters
Mike951 1:24f46931d010 304 }
Mike951 1:24f46931d010 305 }
Mike951 1:24f46931d010 306 crc16_attach(ID_array,13); //attaches crc bits to last two bits of 15 character array
Mike951 1:24f46931d010 307 wait(5);
Mike951 1:24f46931d010 308 return;
Mike951 1:24f46931d010 309 }
Mike951 1:24f46931d010 310
Mike951 2:15134f79b400 311 /*ID Checking Routine
Mike951 2:15134f79b400 312 Checks received IDs to see if it is a valid shot
Mike951 2:15134f79b400 313 player_array is the 15 character id array of the player that constains a 16-bit crc in the last two bytes
Mike951 2:15134f79b400 314 Returns a boolean true if shot is valid, otherwise false
Mike951 2:15134f79b400 315 */
Mike951 2:15134f79b400 316 bool check_id(char* player_array)
Mike951 2:15134f79b400 317 {
Mike951 2:15134f79b400 318 if (id_rx[12] == player_array[12] && id_rx[12] >= 'A' || id_rx[13] == player_array[13] && id_rx[14] == player_array[14])
Mike951 2:15134f79b400 319 {
Mike951 2:15134f79b400 320 return false; //if ids are on the same team or are the same person, they cannot be hit by each other/themselves
Mike951 2:15134f79b400 321 }
Mike951 2:15134f79b400 322
Mike951 2:15134f79b400 323 return (crc16_match(id_rx, 13)); //compares the crc tag in received id to a calculated one. Returns false if different.
Mike951 2:15134f79b400 324 }
Mike951 2:15134f79b400 325
Mike951 2:15134f79b400 326 void respawn()
Mike951 2:15134f79b400 327 {
Mike951 2:15134f79b400 328 lcd.cls();
Mike951 2:15134f79b400 329 lcd.printf("Hit by:");
Mike951 2:15134f79b400 330 wait(1.5);
Mike951 2:15134f79b400 331 lcd.cls();
Mike951 2:15134f79b400 332 for(unsigned j = 0; j <= 12; j++) //prints out id and team of person who tagged player
Mike951 2:15134f79b400 333 {
Mike951 2:15134f79b400 334 lcd.printf("%c",id_rx[j]);
Mike951 2:15134f79b400 335 if (j == 7)
Mike951 2:15134f79b400 336 {
Mike951 2:15134f79b400 337 lcd.printf("\n"); //puts in a new line if id is longer than eight characters
Mike951 2:15134f79b400 338 }
Mike951 2:15134f79b400 339 }
Mike951 2:15134f79b400 340 wait(3.5);
Mike951 2:15134f79b400 341 }
Mike951 2:15134f79b400 342
Mike951 2:15134f79b400 343 void fire(char* player_id)
Mike951 2:15134f79b400 344 {
Mike951 2:15134f79b400 345 wait(0.05);
Mike951 2:15134f79b400 346 }
Mike951 2:15134f79b400 347
Mike951 0:69e5ee3b618d 348 int main()
Mike951 0:69e5ee3b618d 349 {
Mike951 2:15134f79b400 350 id_rx[14] = NULL;
Mike951 0:69e5ee3b618d 351 IR.attach(&callback); //attaches interrupt for serial buffer
Mike951 0:69e5ee3b618d 352 IR.baud(1200); //sets baud rate of serial output and input
Mike951 0:69e5ee3b618d 353 Square_Gen.period_us(26); //produces a 38kHz square wave to ensure proper IR communication...
Mike951 0:69e5ee3b618d 354 Square_Gen.pulsewidth_us(13); //...this signal is sent to one of the IR diode terminals through a transistor
Mike951 0:69e5ee3b618d 355 LB = 1; //turn on lcd backlight
Mike951 0:69e5ee3b618d 356 LP = 1; //turn on lcd power
Mike951 0:69e5ee3b618d 357 sw2.mode(PullUp); //set buttons to a default high voltage for logic low
Mike951 0:69e5ee3b618d 358 sw3.mode(PullUp);
Mike951 0:69e5ee3b618d 359 sw2.setSampleFrequency(); //set buttons to default sample frequency for debouncing
Mike951 0:69e5ee3b618d 360 sw3.setSampleFrequency();
Mike951 0:69e5ee3b618d 361 sw2.setAssertValue(0); //set buttons to be logic high when voltage is low.
Mike951 0:69e5ee3b618d 362 sw3.setAssertValue(0);
Mike951 1:24f46931d010 363 sw2.attach_asserted( &btn2Pressed ); //attach button interrupts
Mike951 1:24f46931d010 364 sw3.attach_asserted( &btn3Pressed );
Mike951 1:24f46931d010 365 clock_tick.attach(&minutes, 60); //ticker interrupts every 60 seconds to add 1 minute and reset timer
Mike951 1:24f46931d010 366 timer.reset(); //ensure timer starts at 0
Mike951 1:24f46931d010 367 timer.start(); //start reset timer
Mike951 2:15134f79b400 368 unsigned secs; //Used to display number of seconds since reset
Mike951 0:69e5ee3b618d 369
Mike951 0:69e5ee3b618d 370 led1 = 1;
Mike951 1:24f46931d010 371 char id[15]; //id array, capable of storing user ids up to 12 bytes with 1 byte for team and 2 bytes for CRC.
Mike951 2:15134f79b400 372 unsigned tag_count = 0; //number of times player has been tagged in a game
Mike951 2:15134f79b400 373 unsigned shots = 0; //number of shots fired in a game.
Mike951 1:24f46931d010 374 lcd.cls(); //ensure lcd starts with clear screen
Mike951 1:24f46931d010 375 lcd.printf("Choose \nYour ID.");
Mike951 1:24f46931d010 376 while(btn2 == false && btn3 == false)
Mike951 1:24f46931d010 377 {
Mike951 2:15134f79b400 378 wait(0.2); //wait to start setup until either button is pressed
Mike951 1:24f46931d010 379 }
Mike951 1:24f46931d010 380 btn2 = false; //reset button values
Mike951 1:24f46931d010 381 btn3 = false;
Mike951 1:24f46931d010 382 setup(id); //setup player id and team, passing function the id array
Mike951 2:15134f79b400 383 lcd.cls();
Mike951 2:15134f79b400 384 lcd.printf("Starting\nin 3 sec");
Mike951 2:15134f79b400 385 wait(3);
Mike951 2:15134f79b400 386 taggable = true;
Mike951 2:15134f79b400 387 LB = 0; //turn off lcd screen and backlight to save power during game
Mike951 2:15134f79b400 388 //LP = 0;
Mike951 0:69e5ee3b618d 389 while(1)
Mike951 0:69e5ee3b618d 390 {
Mike951 2:15134f79b400 391 if(id_rx[14])
Mike951 2:15134f79b400 392 {
Mike951 2:15134f79b400 393 taggable = false; //don't allow new tags while the current one is checked
Mike951 2:15134f79b400 394 flash.attach(&flasher,0.5);
Mike951 2:15134f79b400 395 LB = 1; //turn on backlight and leds
Mike951 2:15134f79b400 396 led1 = 1;
Mike951 2:15134f79b400 397 led2 = 1;
Mike951 2:15134f79b400 398 if (check_id(id))
Mike951 2:15134f79b400 399 {
Mike951 2:15134f79b400 400 flash.detach(); //if tag is valid, no need to flash
Mike951 2:15134f79b400 401 tag_count ++;
Mike951 2:15134f79b400 402 LP = 1; //turn LCD power and backlight on
Mike951 2:15134f79b400 403 LB = 1;
Mike951 2:15134f79b400 404 respawn(); //prints appropriate respawn info
Mike951 2:15134f79b400 405 LB = 0; //turn LCD backlight and power back off
Mike951 2:15134f79b400 406 LP = 0;
Mike951 2:15134f79b400 407 }
Mike951 2:15134f79b400 408 id_rx[14] = NULL; //ensure this if statement does not immediately reactivate
Mike951 2:15134f79b400 409 taggable = true;
Mike951 2:15134f79b400 410 }
Mike951 2:15134f79b400 411 if(btn3)
Mike951 2:15134f79b400 412 {
Mike951 2:15134f79b400 413 btn3 = false;
Mike951 2:15134f79b400 414 flash.detach(); //lights will not flash if you fire really fast
Mike951 2:15134f79b400 415 shots ++;
Mike951 2:15134f79b400 416 LB = 1;
Mike951 2:15134f79b400 417 led1 = 1;
Mike951 2:15134f79b400 418 led2 = 1;
Mike951 2:15134f79b400 419 flash.attach(flasher,0.5); //flashes backlight and leds when firing
Mike951 2:15134f79b400 420 fire(id); //fires player id using IR diode
Mike951 2:15134f79b400 421 }
Mike951 2:15134f79b400 422
Mike951 1:24f46931d010 423 secs = timer.read();
Mike951 0:69e5ee3b618d 424 lcd.cls();
Mike951 1:24f46931d010 425 lcd.printf("Mins:%u\nSecs:%u", mins,secs);
Mike951 1:24f46931d010 426 wait(1);
Mike951 0:69e5ee3b618d 427 //lcd.cls();
Mike951 0:69e5ee3b618d 428 //lcd.printf("43%c%c%c!",c[0],c[1],c[2]);
Mike951 0:69e5ee3b618d 429 //IR.printf("%c%c%c",id);
Mike951 1:24f46931d010 430
Mike951 1:24f46931d010 431
Mike951 1:24f46931d010 432 //crc16 matching test - works!
Mike951 1:24f46931d010 433 /*if (btn3 == true)
Mike951 0:69e5ee3b618d 434 {
Mike951 1:24f46931d010 435 btn3 = false;
Mike951 1:24f46931d010 436 lcd.cls();
Mike951 1:24f46931d010 437 if (crc16_match(id,2))
Mike951 1:24f46931d010 438 {
Mike951 1:24f46931d010 439 lcd.printf("true");
Mike951 1:24f46931d010 440 }
Mike951 1:24f46931d010 441 else
Mike951 1:24f46931d010 442 {
Mike951 1:24f46931d010 443 lcd.printf("false");
Mike951 1:24f46931d010 444 }
Mike951 1:24f46931d010 445 wait(5);
Mike951 1:24f46931d010 446 }*/
Mike951 1:24f46931d010 447
Mike951 1:24f46931d010 448 //statistics display test - works!
Mike951 1:24f46931d010 449 /*
Mike951 1:24f46931d010 450 if (btn2 == true)
Mike951 1:24f46931d010 451 {
Mike951 1:24f46931d010 452 btn2 = false;
Mike951 0:69e5ee3b618d 453 done = false;
Mike951 0:69e5ee3b618d 454 wait(0.05);
Mike951 0:69e5ee3b618d 455 stats.attach(&finish_disp, 5);
Mike951 1:24f46931d010 456 lcd.cls();
Mike951 1:24f46931d010 457 lcd.printf("ID:%c%c%c%c", id[0],id[1],id[2],id[3]);
Mike951 0:69e5ee3b618d 458 while(!done)
Mike951 0:69e5ee3b618d 459 {
Mike951 1:24f46931d010 460 if(btn2 == true)
Mike951 0:69e5ee3b618d 461 {
Mike951 1:24f46931d010 462 btn2 = false;
Mike951 0:69e5ee3b618d 463 stats.detach();
Mike951 0:69e5ee3b618d 464 lcd.cls();
Mike951 0:69e5ee3b618d 465 break;
Mike951 0:69e5ee3b618d 466 }
Mike951 1:24f46931d010 467 wait(0.2);
Mike951 0:69e5ee3b618d 468 }
Mike951 1:24f46931d010 469 }*/
Mike951 0:69e5ee3b618d 470
Mike951 0:69e5ee3b618d 471 //IR.printf("%c",id);
Mike951 0:69e5ee3b618d 472
Mike951 0:69e5ee3b618d 473
Mike951 0:69e5ee3b618d 474 }
Mike951 0:69e5ee3b618d 475 }