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   1 /*
   2  * Copyright © 2012 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 #include <ao.h>
  19 #include <ao_pad.h>
  20 #include <ao_74hc165.h>
  21 #include <ao_radio_cmac.h>
  22
  23 static __xdata uint8_t ao_pad_ignite;
  24 static __xdata struct ao_pad_command    command;
  25 static __xdata struct ao_pad_query      query;
  26 static __pdata uint8_t  ao_pad_armed;
  27 static __pdata uint16_t ao_pad_arm_time;
  28 static __pdata uint8_t  ao_pad_box;
  29 static __xdata uint8_t  ao_pad_disabled;
  30 static __pdata uint16_t ao_pad_packet_time;
  31
  32 #ifndef AO_PAD_RSSI_MINIMUM
  33 #define AO_PAD_RSSI_MINIMUM     -90
  34 #endif
  35
  36 #define DEBUG   1
  37
  38 #if DEBUG
  39 static __pdata uint8_t  ao_pad_debug;
  40 #define PRINTD(...) (ao_pad_debug ? (printf(__VA_ARGS__), 0) : 0)
  41 #define FLUSHD()    (ao_pad_debug ? (flush(), 0) : 0)
  42 #else
  43 #define PRINTD(...)
  44 #define FLUSHD()
  45 #endif
  46
  47 static void
  48 ao_siren(uint8_t v)
  49 {
  50 #ifdef AO_SIREN
  51         ao_gpio_set(AO_SIREN_PORT, AO_SIREN_PIN, AO_SIREN, v);
  52 #else
  53         ao_beep(v ? AO_BEEP_MID : 0);
  54 #endif
  55 }
  56
  57 static void
  58 ao_strobe(uint8_t v)
  59 {
  60 #ifdef AO_STROBE
  61         ao_gpio_set(AO_STROBE_PORT, AO_STROBE_PIN, AO_STROBE, v);
  62 #endif
  63 }
  64
  65 static void
  66 ao_pad_run(void)
  67 {
  68         uint8_t pins;
  69
  70         for (;;) {
  71                 while (!ao_pad_ignite)
  72                         ao_sleep(&ao_pad_ignite);
  73                 /*
  74                  * Actually set the pad bits
  75                  */
  76                 pins = 0;
  77 #if AO_PAD_NUM > 0
  78                 if (ao_pad_ignite & (1 << 0))
  79                         pins |= (1 << AO_PAD_PIN_0);
  80 #endif
  81 #if AO_PAD_NUM > 1
  82                 if (ao_pad_ignite & (1 << 1))
  83                         pins |= (1 << AO_PAD_PIN_1);
  84 #endif
  85 #if AO_PAD_NUM > 2
  86                 if (ao_pad_ignite & (1 << 2))
  87                         pins |= (1 << AO_PAD_PIN_2);
  88 #endif
  89 #if AO_PAD_NUM > 3
  90                 if (ao_pad_ignite & (1 << 3))
  91                         pins |= (1 << AO_PAD_PIN_3);
  92 #endif
  93                 AO_PAD_PORT = (AO_PAD_PORT & (~AO_PAD_ALL_PINS)) | pins;
  94                 while (ao_pad_ignite) {
  95                         ao_pad_ignite = 0;
  96
  97                         ao_delay(AO_PAD_FIRE_TIME);
  98                 }
  99                 AO_PAD_PORT &= ~(AO_PAD_ALL_PINS);
 100         }
 101 }
 102
 103 #define AO_PAD_ARM_SIREN_INTERVAL       200
 104
 105 static void
 106 ao_pad_monitor(void)
 107 {
 108         uint8_t                 c;
 109         uint8_t                 sample;
 110         __pdata uint8_t         prev = 0, cur = 0;
 111         __pdata uint8_t         beeping = 0;
 112         __xdata struct ao_data  *packet;
 113         __pdata uint16_t        arm_beep_time = 0;
 114
 115         sample = ao_data_head;
 116         for (;;) {
 117                 __pdata int16_t                 pyro;
 118                 ao_arch_critical(
 119                         while (sample == ao_data_head)
 120                                 ao_sleep((void *) DATA_TO_XDATA(&ao_data_head));
 121                         );
 122
 123                 packet = &ao_data_ring[sample];
 124                 sample = ao_data_ring_next(sample);
 125
 126                 pyro = packet->adc.pyro;
 127
 128 #define VOLTS_TO_PYRO(x) ((int16_t) ((x) * 27.0 / 127.0 / 3.3 * 32767.0))
 129
 130                 /* convert ADC value to voltage in tenths, then add .2 for the diode drop */
 131                 query.battery = (packet->adc.batt + 96) / 192 + 2;
 132                 cur = 0;
 133                 if (pyro > VOLTS_TO_PYRO(10)) {
 134                         query.arm_status = AO_PAD_ARM_STATUS_ARMED;
 135                         cur |= AO_LED_ARMED;
 136                 } else if (pyro < VOLTS_TO_PYRO(5)) {
 137                         query.arm_status = AO_PAD_ARM_STATUS_DISARMED;
 138                         arm_beep_time = 0;
 139                 } else {
 140                         if ((ao_time() % 100) < 50)
 141                                 cur |= AO_LED_ARMED;
 142                         query.arm_status = AO_PAD_ARM_STATUS_UNKNOWN;
 143                         arm_beep_time = 0;
 144                 }
 145                 if ((ao_time() - ao_pad_packet_time) > AO_SEC_TO_TICKS(2))
 146                         cur |= AO_LED_RED;
 147                 else if (ao_radio_cmac_rssi < AO_PAD_RSSI_MINIMUM)
 148                         cur |= AO_LED_AMBER;
 149                 else
 150                         cur |= AO_LED_GREEN;
 151
 152                 for (c = 0; c < AO_PAD_NUM; c++) {
 153                         int16_t         sense = packet->adc.sense[c];
 154                         uint8_t status = AO_PAD_IGNITER_STATUS_UNKNOWN;
 155
 156                         /*
 157                          *      pyro is run through a divider, so pyro = v_pyro * 27 / 127 ~= v_pyro / 20
 158                          *      v_pyro = pyro * 127 / 27
 159                          *
 160                          *              v_pyro \
 161                          *      100k            igniter
 162                          *              output /
 163                          *      100k           \
 164                          *              sense   relay
 165                          *      27k            /
 166                          *              gnd ---
 167                          *
 168                          *      If the relay is closed, then sense will be 0
 169                          *      If no igniter is present, then sense will be v_pyro * 27k/227k = pyro * 127 / 227 ~= pyro/2
 170                          *      If igniter is present, then sense will be v_pyro * 27k/127k ~= v_pyro / 20 = pyro
 171                          */
 172
 173                         if (sense <= pyro / 8) {
 174                                 status = AO_PAD_IGNITER_STATUS_NO_IGNITER_RELAY_CLOSED;
 175                                 if ((ao_time() % 100) < 50)
 176                                         cur |= AO_LED_CONTINUITY(c);
 177                         }
 178                         else if (pyro / 8 * 3 <= sense && sense <= pyro / 8 * 5)
 179                                 status = AO_PAD_IGNITER_STATUS_NO_IGNITER_RELAY_OPEN;
 180                         else if (pyro / 8 * 7 <= sense) {
 181                                 status = AO_PAD_IGNITER_STATUS_GOOD_IGNITER_RELAY_OPEN;
 182                                 cur |= AO_LED_CONTINUITY(c);
 183                         }
 184                         query.igniter_status[c] = status;
 185                 }
 186                 if (cur != prev) {
 187                         PRINTD("change leds from %02x to %02x\n",
 188                                prev, cur);
 189                         FLUSHD();
 190                         ao_led_set(cur);
 191                         prev = cur;
 192                 }
 193
 194                 if (ao_pad_armed && (int16_t) (ao_time() - ao_pad_arm_time) > AO_PAD_ARM_TIME)
 195                         ao_pad_armed = 0;
 196
 197                 if (ao_pad_armed) {
 198                         ao_strobe(1);
 199                         ao_siren(1);
 200                         beeping = 1;
 201                 } else if (query.arm_status == AO_PAD_ARM_STATUS_ARMED && !beeping) {
 202                         if (arm_beep_time == 0) {
 203                                 arm_beep_time = AO_PAD_ARM_SIREN_INTERVAL;
 204                                 beeping = 1;
 205                                 ao_siren(1);
 206                         }
 207                         --arm_beep_time;
 208                 } else if (beeping) {
 209                         beeping = 0;
 210                         ao_siren(0);
 211                         ao_strobe(0);
 212                 }
 213         }
 214 }
 215
 216 void
 217 ao_pad_disable(void)
 218 {
 219         if (!ao_pad_disabled) {
 220                 ao_pad_disabled = 1;
 221                 ao_radio_recv_abort();
 222         }
 223 }
 224
 225 void
 226 ao_pad_enable(void)
 227 {
 228         ao_pad_disabled = 0;
 229         ao_wakeup (&ao_pad_disabled);
 230 }
 231
 232 #if HAS_74HC165
 233 static uint8_t
 234 ao_pad_read_box(void)
 235 {
 236         uint8_t         byte = ao_74hc165_read();
 237         uint8_t         h, l;
 238
 239         h = byte >> 4;
 240         l = byte & 0xf;
 241         return h * 10 + l;
 242 }
 243 #else
 244 #define ao_pad_read_box()       0
 245 #endif
 246
 247 static void
 248 ao_pad(void)
 249 {
 250         int16_t time_difference;
 251         int8_t  ret;
 252
 253         ao_pad_box = 0;
 254         ao_led_set(0);
 255         for (;;) {
 256                 FLUSHD();
 257                 while (ao_pad_disabled)
 258                         ao_sleep(&ao_pad_disabled);
 259                 ret = ao_radio_cmac_recv(&command, sizeof (command), 0);
 260                 PRINTD ("cmac_recv %d %d\n", ret, ao_radio_cmac_rssi);
 261                 if (ret != AO_RADIO_CMAC_OK)
 262                         continue;
 263                 ao_pad_packet_time = ao_time();
 264
 265                 ao_pad_box = ao_pad_read_box();
 266
 267                 PRINTD ("tick %d box %d (me %d) cmd %d channels %02x\n",
 268                         command.tick, command.box, ao_pad_box, command.cmd, command.channels);
 269
 270                 switch (command.cmd) {
 271                 case AO_LAUNCH_ARM:
 272                         if (command.box != ao_pad_box) {
 273                                 PRINTD ("box number mismatch\n");
 274                                 break;
 275                         }
 276
 277                         if (command.channels & ~(AO_PAD_ALL_CHANNELS))
 278                                 break;
 279
 280                         time_difference = command.tick - ao_time();
 281                         PRINTD ("arm tick %d local tick %d\n", command.tick, ao_time());
 282                         if (time_difference < 0)
 283                                 time_difference = -time_difference;
 284                         if (time_difference > 10) {
 285                                 PRINTD ("time difference too large %d\n", time_difference);
 286                                 break;
 287                         }
 288                         PRINTD ("armed\n");
 289                         ao_pad_armed = command.channels;
 290                         ao_pad_arm_time = ao_time();
 291                         break;
 292
 293                 case AO_LAUNCH_QUERY:
 294                         if (command.box != ao_pad_box) {
 295                                 PRINTD ("box number mismatch\n");
 296                                 break;
 297                         }
 298
 299                         query.tick = ao_time();
 300                         query.box = ao_pad_box;
 301                         query.channels = AO_PAD_ALL_CHANNELS;
 302                         query.armed = ao_pad_armed;
 303                         PRINTD ("query tick %d box %d channels %02x arm %d arm_status %d igniter %d,%d,%d,%d\n",
 304                                 query.tick, query.box, query.channels, query.armed,
 305                                 query.arm_status,
 306                                 query.igniter_status[0],
 307                                 query.igniter_status[1],
 308                                 query.igniter_status[2],
 309                                 query.igniter_status[3]);
 310                         ao_radio_cmac_send(&query, sizeof (query));
 311                         break;
 312                 case AO_LAUNCH_FIRE:
 313                         if (!ao_pad_armed) {
 314                                 PRINTD ("not armed\n");
 315                                 break;
 316                         }
 317                         if ((uint16_t) (ao_time() - ao_pad_arm_time) > AO_SEC_TO_TICKS(20)) {
 318                                 PRINTD ("late pad arm_time %d time %d\n",
 319                                         ao_pad_arm_time, ao_time());
 320                                 break;
 321                         }
 322                         PRINTD ("ignite\n");
 323                         ao_pad_ignite = ao_pad_armed;
 324                         ao_pad_arm_time = ao_time();
 325                         ao_wakeup(&ao_pad_ignite);
 326                         break;
 327                 }
 328         }
 329 }
 330
 331 void
 332 ao_pad_test(void)
 333 {
 334         uint8_t c;
 335
 336         printf ("Arm switch: ");
 337         switch (query.arm_status) {
 338         case AO_PAD_ARM_STATUS_ARMED:
 339                 printf ("Armed\n");
 340                 break;
 341         case AO_PAD_ARM_STATUS_DISARMED:
 342                 printf ("Disarmed\n");
 343                 break;
 344         case AO_PAD_ARM_STATUS_UNKNOWN:
 345                 printf ("Unknown\n");
 346                 break;
 347         }
 348
 349         for (c = 0; c < AO_PAD_NUM; c++) {
 350                 printf ("Pad %d: ", c);
 351                 switch (query.igniter_status[c]) {
 352                 case AO_PAD_IGNITER_STATUS_NO_IGNITER_RELAY_CLOSED:     printf ("No igniter. Relay closed\n"); break;
 353                 case AO_PAD_IGNITER_STATUS_NO_IGNITER_RELAY_OPEN:       printf ("No igniter. Relay open\n"); break;
 354                 case AO_PAD_IGNITER_STATUS_GOOD_IGNITER_RELAY_OPEN:     printf ("Good igniter. Relay open\n"); break;
 355                 case AO_PAD_IGNITER_STATUS_UNKNOWN:                     printf ("Unknown\n"); break;
 356                 }
 357         }
 358 }
 359
 360 void
 361 ao_pad_manual(void)
 362 {
 363         uint8_t ignite;
 364         int     repeat;
 365         ao_cmd_white();
 366         if (!ao_match_word("DoIt"))
 367                 return;
 368         ao_cmd_decimal();
 369         if (ao_cmd_status != ao_cmd_success)
 370                 return;
 371         ignite = 1 << ao_cmd_lex_i;
 372         ao_cmd_decimal();
 373         if (ao_cmd_status != ao_cmd_success) {
 374                 repeat = 1;
 375                 ao_cmd_status = ao_cmd_success;
 376         } else
 377                 repeat = ao_cmd_lex_i;
 378         while (repeat-- > 0) {
 379                 ao_pad_ignite = ignite;
 380                 ao_wakeup(&ao_pad_ignite);
 381                 ao_delay(AO_PAD_FIRE_TIME>>1);
 382         }
 383 }
 384
 385 static __xdata struct ao_task ao_pad_task;
 386 static __xdata struct ao_task ao_pad_ignite_task;
 387 static __xdata struct ao_task ao_pad_monitor_task;
 388
 389 #if DEBUG
 390 void
 391 ao_pad_set_debug(void)
 392 {
 393         ao_cmd_decimal();
 394         if (ao_cmd_status == ao_cmd_success)
 395                 ao_pad_debug = ao_cmd_lex_i != 0;
 396 }
 397
 398
 399 static void
 400 ao_pad_alarm_debug(void)
 401 {
 402         uint8_t which, value;
 403         ao_cmd_decimal();
 404         if (ao_cmd_status != ao_cmd_success)
 405                 return;
 406         which = ao_cmd_lex_i;
 407         ao_cmd_decimal();
 408         if (ao_cmd_status != ao_cmd_success)
 409                 return;
 410         value = ao_cmd_lex_i;
 411         printf ("Set %s to %d\n", which ? "siren" : "strobe", value);
 412         if (which)
 413                 ao_siren(value);
 414         else
 415                 ao_strobe(value);
 416 }
 417 #endif
 418
 419 __code struct ao_cmds ao_pad_cmds[] = {
 420         { ao_pad_test,  "t\0Test pad continuity" },
 421         { ao_pad_manual,        "i <key> <n>\0Fire igniter. <key> is doit with D&I" },
 422 #if DEBUG
 423         { ao_pad_set_debug,     "D <0 off, 1 on>\0Debug" },
 424         { ao_pad_alarm_debug,   "S <0 strobe, 1 siren> <0 off, 1 on>\0Set alarm output" },
 425 #endif
 426         { 0, NULL }
 427 };
 428
 429 void
 430 ao_pad_init(void)
 431 {
 432 #if AO_PAD_NUM > 0
 433         ao_enable_output(AO_PAD_PORT, AO_PAD_PIN_0, AO_PAD_0, 0);
 434 #endif
 435 #if AO_PAD_NUM > 1
 436         ao_enable_output(AO_PAD_PORT, AO_PAD_PIN_1, AO_PAD_1, 0);
 437 #endif
 438 #if AO_PAD_NUM > 2
 439         ao_enable_output(AO_PAD_PORT, AO_PAD_PIN_2, AO_PAD_2, 0);
 440 #endif
 441 #if AO_PAD_NUM > 3
 442         ao_enable_output(AO_PAD_PORT, AO_PAD_PIN_3, AO_PAD_3, 0);
 443 #endif
 444 #ifdef AO_STROBE
 445         ao_enable_output(AO_STROBE_PORT, AO_STROBE_PIN, AO_STROBE, 0);
 446 #endif
 447 #ifdef AO_SIREN
 448         ao_enable_output(AO_SIREN_PORT, AO_SIREN_PIN, AO_SIREN, 0);
 449 #endif
 450         ao_cmd_register(&ao_pad_cmds[0]);
 451         ao_add_task(&ao_pad_task, ao_pad, "pad listener");
 452         ao_add_task(&ao_pad_ignite_task, ao_pad_run, "pad igniter");
 453         ao_add_task(&ao_pad_monitor_task, ao_pad_monitor, "pad monitor");
 454 }