ROM2/main_basic.c

   1 /*
   2  * main_basic.c - a simplified main procedure that relies upon a ersver to do
   3  * anything smart. Just be a dumb interface to a display, keypad, coin mech
   4  * and snacks.
   5  */
   6
   7 #define VERSION_STRING "R 20040622"
   8
   9 #include "display_basic.h"
  10 #include "keypad.h"
  11 #include "chime.h"
  12 #include "coinmech.h"
  13 #include "motors.h"
  14 #include "sci.h"
  15 #include "vend.h"
  16 #include "xmodem.h"
  17 #include "sha1.h"
  18
  19 u8 last_standalone;
  20 u8 last_switch_input;
  21 u8 last_misc_input;
  22 u16 last_coin_value;
  23 bool last_door_open;
  24 char display_buf[11];
  25 /* cur_motor[0] is 0 for nothing, or 1..10, or 0xff to say redraw.
  26  * cur_motor[1] is 0..9 and only meaningful is cur_motor[0] != 0. */
  27 u8 cur_motor[2];
  28
  29 bool check_standalone() {
  30         if (is_standalone()) {
  31                 send_string("011 In standalone mode. Function disabled." CRLF);
  32                 return 1;
  33         }
  34         return 0;
  35 }
  36
  37 void unknown_command() {
  38         send_string("012 Unknown command. Type HELP for help." CRLF);
  39 }
  40
  41 void motor_reply(u8 code) {
  42         /* returns a message of the form MXYY - X is return code, YY is motor */
  43         switch (code) {
  44                 case MOTOR_SUCCESS:
  45                         send_string("100 Vend successful." CRLF);
  46                         break;
  47                 case MOTOR_NOSLOT:
  48                         send_string("151 No motor there." CRLF);
  49                         break;
  50                 case MOTOR_CURRENT_FAIL:
  51                         send_string("152 Over current." CRLF);
  52                         break;
  53                 case MOTOR_HOME_FAIL:
  54                         send_string("153 Home sensors failing." CRLF);
  55                         break;
  56                 default:
  57                         send_string("159 Unknown motor error." CRLF);
  58         }
  59 }
  60
  61 void dispense_something() {
  62         /* process a message VXX in sci_rx_buf where XX is motor number */
  63         u8 slot;
  64
  65         if (check_standalone()) return;
  66
  67         if (my_strncmp("ALL", (char*)sci_rx_buf+1, 3)) {
  68                 char motor[3];
  69                 motor[2] = '\0';
  70                 send_string("102 Vend all motors starting." CRLF);
  71                 for (motor[0] = '0'; motor[0] <= '9'; motor[0]++) {
  72                         for (motor[1] = '0'; motor[1] <= '9'; motor[1]++) {
  73                                 send_string("101 Vending ");
  74                                 send_string(motor);
  75                                 send_string(CRLF);
  76                                 motor_reply(dispense_motor(motor[0]*10+motor[1]));
  77                         }
  78                 }
  79                 send_string("102 Vend all motors complete." CRLF);
  80                 return;
  81         }
  82
  83         if ((sci_rx_buf[1] < '0') || (sci_rx_buf[1] > '9') ||
  84                 (sci_rx_buf[2] < '0') || (sci_rx_buf[2] > '9')) {
  85                 sci_rx_buf[1] = sci_rx_buf[2] = '0';
  86                 motor_reply(MOTOR_NOSLOT);
  87                 return;
  88         }
  89
  90         slot = (sci_rx_buf[1] - '0') * 10;
  91         slot += sci_rx_buf[2] - '0';
  92
  93         motor_reply(dispense_motor(slot));
  94 }
  95
  96 void write_to_display() {
  97         /* process a message in the form DXXXXXXXXXX to send to display */
  98         u8 i;
  99         char buf[11];
 100
 101         if (check_standalone()) return;
 102
 103         for (i = 0; i < 10; i++)
 104                 if (sci_rx_buf[i+1])
 105                         buf[i] = sci_rx_buf[i+1];
 106                 else
 107                         break;
 108
 109         for (; i < 10; i++) /* pad the rest out with spaces */
 110                 buf[i] = ' ';
 111         buf[i] = '\0';
 112
 113         set_msg(buf);
 114         send_string("300 Written." CRLF);
 115 }
 116
 117 void send_balance() {
 118         sci_tx_buf[0] = 'C';
 119         sci_tx_buf[1] = have_change?'0':'1';
 120         sci_tx_buf[2] = (coin_value/10000)%10;
 121         sci_tx_buf[3] = (coin_value/1000)%10;
 122         sci_tx_buf[4] = (coin_value/100)%10;
 123         sci_tx_buf[5] = (coin_value/10)%10;
 124         sci_tx_buf[6] = coin_value%10;
 125         sci_tx_buf[8] = 0;
 126         send_buffer(1);
 127 }
 128
 129 void give_change() {
 130         u16 cost;
 131
 132         if ((sci_rx_buf[1] < '0') || (sci_rx_buf[1] > '9') ||
 133                 (sci_rx_buf[2] < '0') || (sci_rx_buf[2] > '9') ||
 134                 (sci_rx_buf[3] < '0') || (sci_rx_buf[3] > '9') ||
 135                 (sci_rx_buf[4] < '0') || (sci_rx_buf[4] > '9') ||
 136                 (sci_rx_buf[5] < '0') || (sci_rx_buf[5] > '9')) {
 137                 send_nack();
 138         }
 139         cost = sci_rx_buf[1] - '0';
 140         cost *= 10; cost = sci_rx_buf[2] - '0';
 141         cost *= 10; cost = sci_rx_buf[3] - '0';
 142         cost *= 10; cost = sci_rx_buf[4] - '0';
 143         cost *= 10; cost = sci_rx_buf[5] - '0';
 144
 145         coin_cost(cost);
 146         send_ack();
 147 }
 148
 149 void send_keypress(u8 key) {
 150         /* send a packet of the form KX with X being the key, or R for reset */
 151         if (is_standalone()) return;
 152
 153         sci_tx_buf[0] = '2';
 154         if (key == KEY_RESET) {
 155                 sci_tx_buf[1] = '1';
 156                 sci_tx_buf[2] = '1';
 157         } else {
 158                 sci_tx_buf[1] = '0';
 159                 sci_tx_buf[2] = (key%10)+'0';
 160         }
 161         sci_tx_buf[3] = '\0';
 162         send_buffer(0);
 163         send_string(" key." CRLF);
 164 }
 165
 166 void send_door_msg(bool open) {
 167         if (is_standalone()) return;
 168         sci_tx_buf[0] = '4';
 169         sci_tx_buf[1] = '0';
 170         sci_tx_buf[2] = open?'1':'0';
 171         send_buffer(0);
 172         if (open)
 173                 send_string(" door open." CRLF);
 174         else
 175                 send_string(" door closed." CRLF);
 176 }
 177
 178 u8 hexchar2u8(char b) {
 179         if (b >= '0' && b <= '9') return b-'0';
 180         if (b >= 'a' && b <= 'f') return b-'a'+0x0a;
 181         if (b >= 'A' && b <= 'F') return b-'A'+0x0a;
 182         return 0;
 183 }
 184
 185 char nibble2hexchar(u8 b) {
 186         if (b <= 9) return b+'0';
 187         if (b >= 10 && b <= 15) return b+'A'-10;
 188         return 'X';
 189 }
 190
 191 u8 hex2u8(char msb, char lsb) {
 192         return (hexchar2u8(msb) << 4) + hexchar2u8(lsb);
 193 }
 194
 195 static char hexconv_buf[3];
 196 char* u82hex(u8 a) {
 197         hexconv_buf[0] = nibble2hexchar((a&0xf0) >> 4);
 198         hexconv_buf[1] = nibble2hexchar(a&0x0f);
 199         hexconv_buf[2] = '\0';
 200         return hexconv_buf;
 201 }
 202
 203 void do_chime() {
 204         if (check_standalone()) return;
 205         if (sci_rx_buf[1] == '\0')
 206                 chime_start();
 207         else if (sci_rx_buf[2] != '\0' && sci_rx_buf[3] == '\0')
 208                 chime_for(hex2u8(sci_rx_buf[1], sci_rx_buf[2]));
 209         else {
 210                 send_string("510 Unknown chime duration." CRLF);
 211                 return;
 212         }
 213         send_string("500 Chimed." CRLF);
 214 }
 215
 216 void print_switches(u8 prompted) {
 217         if (prompted)
 218                 send_string("600 ");
 219         else
 220                 send_string("610 ");
 221         send_string(u82hex(misc_input));
 222         send_string(" ");
 223         send_string(u82hex(switch_input));
 224         send_string(CRLF);
 225 }
 226
 227 void ping_pong() {
 228         /* make sure it's really a ping */
 229         if (!my_strncmp("ING", (char*)sci_rx_buf+1, 3)) {
 230                 unknown_command();
 231                 return;
 232         }
 233         /* respond with ack & pong */
 234         send_string("000 PONG!" CRLF);
 235 }
 236
 237 void send_prompt() {
 238         send_string(is_standalone()?"$ ":"# ");
 239 }
 240
 241 void about() {
 242         if (!my_strncmp("BOUT", (char*)sci_rx_buf+1, 4)) {
 243                 unknown_command();
 244                 return;
 245         }
 246         send_string(
 247                 "-----------------------------------------------------------------" CRLF
 248                 "    ROM2 (C) 2004 Bernard Blackham <[email protected]>" CRLF
 249                 "-----------------------------------------------------------------" CRLF
 250                 "                                        Revision " VERSION_STRING CRLF
 251                 "" CRLF
 252                 "   This snack machine was brought to you by " CRLF
 253                 "    Bernard Blackham" CRLF
 254                 "    Mark Tearle" CRLF
 255                 "    Harry McNally" CRLF
 256                 "    Michal Gornisiewicz" CRLF
 257                 "    and others." CRLF
 258                 "" CRLF
 259                 " Another UCC project in action.         http://www.ucc.asn.au/" CRLF
 260         );
 261 }
 262
 263 void set_echo() {
 264         if (my_strncmp("CHO ON", (char*)sci_rx_buf+1, 6))
 265                 sci_echo = 1;
 266         else if (my_strncmp("CHO OFF", (char*)sci_rx_buf+1, 7))
 267                 sci_echo = 0;
 268         else
 269                 unknown_command();
 270 }
 271
 272 void moo() {
 273         if (!my_strncmp("OO", (char*)sci_rx_buf+1, 2)) {
 274                 unknown_command();
 275                 return;
 276         }
 277         send_string(
 278 "       ____________" CRLF
 279 "       |__________|" CRLF
 280 "      /           /\\" CRLF
 281 "     /  U C C    /  \\" CRLF
 282 "    /___________/___/|" CRLF
 283 "    |          |     |" CRLF
 284 "    |  ==\\ /== |     |" CRLF
 285 "    |   O   O  | \\ \\ |" CRLF
 286 "    |     <    |  \\ \\|" CRLF
 287 "   /|          |   \\ \\" CRLF
 288 "  / |  \\_____/ |   / /" CRLF
 289 " / /|          |  / /|" CRLF
 290 "/||\\|          | /||\\/" CRLF
 291 "    -------------|   " CRLF
 292 "        | |    | | " CRLF
 293 "       <__/    \\__>" CRLF
 294 "" CRLF
 295 "  ... Where's the cheese?" CRLF
 296         );
 297 }
 298
 299 void help() {
 300         send_string(
 301                 "Valid commands are:" CRLF
 302                 " ABOUT         ROM information" CRLF
 303                 " PING          pongs" CRLF
 304                 " ECHO {ON|OFF} turn echo on or off" CRLF
 305                 " Vnn           vend an item" CRLF
 306                 " VALL          vend all items" CRLF
 307                 " DXXXXXXXXXX   show a message on the display" CRLF
 308                 " B[nn]         beep for a duration nn (optional)" CRLF
 309                 " S[...]        query all internal switch states" CRLF
 310                 " H[...]        this help screen" CRLF
 311                 " GETROM        download the ROM source code using xmodem" CRLF
 312                 "Comments start with a #" CRLF
 313         );
 314 }
 315
 316 extern const char _rom_src_data[];
 317 extern const u16 _rom_src_len;
 318 void getrom() {
 319         if (!my_strncmp("ETROM", (char*)sci_rx_buf+1, 5)) {
 320                 unknown_command();
 321                 return;
 322         }
 323         char s[4];
 324         send_string("Writing to serial port (maybe). Size is 0x");
 325         send_string(u82hex(_rom_src_len >> 8));
 326         send_string(u82hex(_rom_src_len & 0xff));
 327         send_string(" with signature ");
 328         s[0] = _rom_src_data[0];
 329         s[1] = _rom_src_data[1];
 330         s[2] = _rom_src_data[2];
 331         s[3] = '\0';
 332         send_string(s);
 333         send_string(CRLF " Type YES to download rom.tar.bz2 via XMODEM: ");
 334         msg_clr();
 335         while (!sci_have_packet); /* spin */
 336         if (!my_strncmp("YES", (char*)sci_rx_buf, 3)) return;
 337
 338         sci_init();
 339         sci_doing_xmodem = 1;
 340         if (!xmodem_init_xfer()) {
 341                 sci_doing_xmodem = 0;
 342                 send_string("XMODEM init failed. Nobody's listening :(" CRLF);
 343                 return;
 344         }
 345         char *p = (char*)_rom_src_data;
 346         char *end = (char*)_rom_src_data+_rom_src_len;
 347         bool aborted = 0;
 348         while (1) {
 349                 if (!xmodem_send_packet((char*)p, 128)) {
 350                         aborted = 1;
 351                         break;
 352                 }
 353                 p += 128;
 354                 if (p + 128 > end) {
 355                         /* send partial packet */
 356                         if (!xmodem_send_packet((char*)p, end-p)) aborted = 1;
 357                         break;
 358                 }
 359         }
 360
 361         xmodem_finish_xfer();
 362         sci_doing_xmodem = 0;
 363         if (aborted)
 364                 send_string(CRLF "Transfer aborted." CRLF);
 365         else
 366                 send_string(CRLF "Transfer complete." CRLF);
 367 }
 368
 369 void quit() {
 370         if (my_strncmp("UIT", (char*)sci_rx_buf+1, 3))
 371                 send_string("013 You can't quit you doofus." CRLF);
 372         else
 373                 unknown_command();
 374 }
 375
 376 //SHA1_CTX ctx;
 377 //u8 sha1_digest[SHA1_SIGNATURE_SIZE];
 378
 379 int main() {
 380         u8 i;
 381         for (i = 0; i < 11; i++)
 382                 display_buf[i] = ' ';
 383         display_buf[10] = '\0';
 384
 385         changer_output = 0x7f;
 386         _io_ports[M6811_PORTA] = 0xc0; /* display on. talking to serial port */
 387         _io_ports[M6811_DDRA] = 0xfc;
 388         _io_ports[M6811_DDRD] = 0x3e;
 389         _io_ports[M6811_SPCR] = M6811_MSTR | M6811_SPR1;
 390         set_misc_output(0x00);
 391
 392         display_init();
 393         set_msg(" HELLO    ");
 394         delay(1000);
 395
 396         unlock(); /* enable interrupts */
 397
 398         set_msg("  CRUEL   ");
 399
 400         //comm_init();
 401         //coinmech_init();
 402         sci_init();
 403         keypad_init();
 404         last_coin_value = 0;
 405         last_door_open = 0;
 406
 407         delay(1000);
 408
 409         set_msg("   WORLD  ");
 410         delay(1000);
 411
 412         chime_start();
 413
 414         send_string("5N4X0RZ R US" CRLF);
 415
 416         last_standalone = is_standalone();
 417         if (last_standalone)
 418                 cur_motor[0] = 0xff;
 419         else
 420                 cur_motor[0] = 0;
 421         send_prompt();
 422
 423         last_switch_input = switch_input;
 424         last_misc_input = misc_input;
 425
 426         while(1) {
 427                 if (cur_motor[0] == 0xff) { /* signal to say redraw screen */
 428                         set_msg("*5N4X0RZ* ");
 429                         cur_motor[0] = 0;
 430                 }
 431
 432                 if (door_open() != last_door_open) {
 433                         last_door_open = door_open();
 434                         send_door_msg(last_door_open);
 435                         chime_start();
 436                         set_msg(last_door_open?"DOOR OPEN ":"DOOR CLOSE");
 437                 }
 438
 439                 if (last_standalone != is_standalone()) {
 440                         /* somebody flicked the standalone switch */
 441                         msg_clr();
 442                         send_string(CRLF);
 443                         send_prompt();
 444                         last_standalone = is_standalone();
 445                 }
 446
 447                 if (last_misc_input != misc_input) {
 448                         print_switches(0);
 449                         last_misc_input = misc_input;
 450                 }
 451
 452                 if (last_switch_input != switch_input) {
 453                         print_switches(0);
 454                         last_switch_input = switch_input;
 455                 }
 456
 457                 if (sci_have_packet) {
 458                         if (must_verify()) {
 459                                 //SHA1_Init(&ctx);
 460                                 //SHA1_Update(&ctx, sci_rx_buf, my_strlen(sci_rx_buf));
 461                                 //SHA1_Final(sha1_digest, &ctx);
 462                         }
 463                         switch (sci_rx_buf[0]) {
 464                                 case '\0':
 465                                 case '#':
 466                                         send_string(CRLF);
 467                                         break;
 468                                 case 'E':
 469                                         set_echo();
 470                                         break;
 471                                 case 'H':
 472                                         help();
 473                                         break;
 474                                 case 'V':
 475                                         dispense_something();
 476                                         break;
 477                                 case 'D':
 478                                         write_to_display();
 479                                         break;
 480                                 case 'B':
 481                                         do_chime();
 482                                         break;
 483                                 case 'P':
 484                                         ping_pong();
 485                                         break;
 486                                 case 'A':
 487                                         about();
 488                                         break;
 489                                 case 'S':
 490                                         print_switches(1);
 491                                         break;
 492                                 case 'M':
 493                                         moo();
 494                                         break;
 495                                 case 'Q':
 496                                         quit();
 497                                         break;
 498                                 case 'G':
 499                                         getrom();
 500                                         break;
 501                                 default:
 502                                         // shurg
 503                                         unknown_command();
 504                                         break;
 505                         }
 506                         msg_clr();
 507                         send_prompt();
 508                 }
 509
 510                 keypad_read();
 511                 if (keypad_pressed()) {
 512                         if (is_standalone()) {
 513                                 if (last_key == KEY_RESET) {
 514                                         cur_motor[0] = 0xff;
 515                                 } else {
 516                                         if (cur_motor[0]) {
 517                                                 u8 motor_num;
 518                                                 cur_motor[1] = last_key%10;
 519                                                 display_buf[1] = cur_motor[1]+'0';
 520                                                 set_msg(display_buf);
 521
 522                                                 motor_num = cur_motor[0]%10;
 523                                                 motor_num *= 10;
 524                                                 motor_num += cur_motor[1];
 525                                                 switch (dispense_motor(motor_num)) {
 526                                                         case MOTOR_HOME_FAIL:
 527                                                                 set_msg(" HOME FAIL ");
 528                                                                 break;
 529                                                         case MOTOR_CURRENT_FAIL:
 530                                                                 set_msg(" OVER CRNT ");
 531                                                                 break;
 532                                                         case MOTOR_SUCCESS:
 533                                                                 set_msg("THANK  YOU");
 534                                                                 break;
 535                                                         case MOTOR_NOSLOT:
 536                                                                 set_msg(" NO MOTOR ");
 537                                                                 break;
 538                                                         default:
 539                                                                 set_msg("ERRRRRRRR?");
 540                                                                 break;
 541                                                 }
 542
 543                                                 display_buf[0] = ' ';
 544                                                 display_buf[1] = ' ';
 545                                                 cur_motor[0] = 0xff;
 546                                                 delay(500);
 547                                         } else {
 548                                                 cur_motor[0] = last_key;
 549                                                 display_buf[0] = (last_key%10)+'0';
 550                                                 set_msg(display_buf);
 551                                         }
 552                                 }
 553                         } else
 554                                 send_keypress(last_key);
 555                 }
 556
 557                 /*
 558                 if (coin_value != last_coin_value) {
 559                         send_balance();
 560                         last_coin_value = coin_value;
 561                 }
 562                 */
 563         }
 564 }