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   1 /*
   2  * Copyright © 2009 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
  20 __xdata struct ao_ignition ao_ignition[2];
  21
  22 void
  23 ao_ignite(enum ao_igniter igniter) __critical
  24 {
  25         ao_ignition[igniter].request = 1;
  26         ao_wakeup(&ao_ignition);
  27 }
  28
  29 enum ao_igniter_status
  30 ao_igniter_status(enum ao_igniter igniter)
  31 {
  32         __xdata struct ao_adc adc;
  33         __pdata int16_t value;
  34         __pdata uint8_t request, firing, fired;
  35
  36         __critical {
  37                 ao_adc_get(&adc);
  38                 request = ao_ignition[igniter].request;
  39                 fired = ao_ignition[igniter].fired;
  40                 firing = ao_ignition[igniter].firing;
  41         }
  42         if (firing || (request && !fired))
  43                 return ao_igniter_active;
  44
  45         value = (AO_IGNITER_CLOSED>>1);
  46         switch (igniter) {
  47         case ao_igniter_drogue:
  48                 value = adc.sense_d;
  49                 break;
  50         case ao_igniter_main:
  51                 value = adc.sense_m;
  52                 break;
  53         }
  54         if (value < AO_IGNITER_OPEN)
  55                 return ao_igniter_open;
  56         else if (value > AO_IGNITER_CLOSED)
  57                 return ao_igniter_ready;
  58         else
  59                 return ao_igniter_unknown;
  60 }
  61
  62 void
  63 ao_igniter_fire(enum ao_igniter igniter) __critical
  64 {
  65         ao_ignition[igniter].firing = 1;
  66         switch(ao_config.ignite_mode) {
  67         case AO_IGNITE_MODE_DUAL:
  68                 switch (igniter) {
  69                 case ao_igniter_drogue:
  70                         AO_IGNITER_DROGUE = 1;
  71                         ao_delay(AO_IGNITER_FIRE_TIME);
  72                         AO_IGNITER_DROGUE = 0;
  73                         break;
  74                 case ao_igniter_main:
  75                         AO_IGNITER_MAIN = 1;
  76                         ao_delay(AO_IGNITER_FIRE_TIME);
  77                         AO_IGNITER_MAIN = 0;
  78                         break;
  79                 }
  80                 break;
  81         case AO_IGNITE_MODE_APOGEE:
  82                 switch (igniter) {
  83                 case ao_igniter_drogue:
  84                         AO_IGNITER_DROGUE = 1;
  85                         ao_delay(AO_IGNITER_FIRE_TIME);
  86                         AO_IGNITER_DROGUE = 0;
  87                         ao_delay(AO_IGNITER_CHARGE_TIME);
  88                         AO_IGNITER_MAIN = 1;
  89                         ao_delay(AO_IGNITER_FIRE_TIME);
  90                         AO_IGNITER_MAIN = 0;
  91                         break;
  92                 }
  93                 break;
  94         case AO_IGNITE_MODE_MAIN:
  95                 switch (igniter) {
  96                 case ao_igniter_main:
  97                         AO_IGNITER_DROGUE = 1;
  98                         ao_delay(AO_IGNITER_FIRE_TIME);
  99                         AO_IGNITER_DROGUE = 0;
 100                         ao_delay(AO_IGNITER_CHARGE_TIME);
 101                         AO_IGNITER_MAIN = 1;
 102                         ao_delay(AO_IGNITER_FIRE_TIME);
 103                         AO_IGNITER_MAIN = 0;
 104                         break;
 105                 }
 106                 break;
 107         }
 108         ao_ignition[igniter].firing = 0;
 109 }
 110
 111 void
 112 ao_igniter(void)
 113 {
 114         __xdata enum ao_ignter igniter;
 115
 116         ao_config_get();
 117         for (;;) {
 118                 ao_sleep(&ao_ignition);
 119                 for (igniter = ao_igniter_drogue; igniter <= ao_igniter_main; igniter++) {
 120                         if (ao_ignition[igniter].request && !ao_ignition[igniter].fired) {
 121                                 if (igniter == ao_igniter_drogue && ao_config.apogee_delay)
 122                                         ao_delay(AO_SEC_TO_TICKS(ao_config.apogee_delay));
 123
 124                                 ao_igniter_fire(igniter);
 125                                 ao_delay(AO_IGNITER_CHARGE_TIME);
 126                                 ao_ignition[igniter].fired = 1;
 127                         }
 128                 }
 129         }
 130 }
 131
 132 void
 133 ao_ignite_manual(void)
 134 {
 135         ao_cmd_white();
 136         if (!ao_match_word("DoIt"))
 137                 return;
 138         ao_cmd_white();
 139         if (ao_cmd_lex_c == 'm') {
 140                 if(ao_match_word("main"))
 141                         ao_igniter_fire(ao_igniter_main);
 142         } else {
 143                 if(ao_match_word("drogue"))
 144                         ao_igniter_fire(ao_igniter_drogue);
 145         }
 146 }
 147
 148 static __code char * __code igniter_status_names[] = {
 149         "unknown", "ready", "active", "open"
 150 };
 151
 152 void
 153 ao_ignite_print_status(enum ao_igniter igniter, __code char *name) __reentrant
 154 {
 155         enum ao_igniter_status status = ao_igniter_status(igniter);
 156         printf("Igniter: %6s Status: %s\n",
 157                name,
 158                igniter_status_names[status]);
 159 }
 160
 161 void
 162 ao_ignite_test(void)
 163 {
 164         ao_ignite_print_status(ao_igniter_drogue, "drogue");
 165         ao_ignite_print_status(ao_igniter_main, "main");
 166 }
 167
 168 __code struct ao_cmds ao_ignite_cmds[] = {
 169         { ao_ignite_manual,     "i <key> {main|drogue}\0Fire igniter. <key> is doit with D&I" },
 170         { ao_ignite_test,       "t\0Test igniter" },
 171         { 0,    NULL },
 172 };
 173
 174 __xdata struct ao_task ao_igniter_task;
 175
 176 void
 177 ao_ignite_set_pins(void)
 178 {
 179         AO_IGNITER_DROGUE = 0;
 180         AO_IGNITER_MAIN = 0;
 181         AO_IGNITER_DIR |= AO_IGNITER_DROGUE_BIT | AO_IGNITER_MAIN_BIT;
 182 }
 183
 184 void
 185 ao_igniter_init(void)
 186 {
 187         ao_ignite_set_pins();
 188         ao_cmd_register(&ao_ignite_cmds[0]);
 189         ao_add_task(&ao_igniter_task, ao_igniter, "igniter");
 190 }