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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 #if IGNITE_ON_P2
  21 #define AO_IGNITER_DROGUE       P2_3
  22 #define AO_IGNITER_MAIN         P2_4
  23 #define AO_IGNITER_DIR          P2DIR
  24 #define AO_IGNITER_DROGUE_BIT   (1 << 3)
  25 #define AO_IGNITER_MAIN_BIT     (1 << 4)
  26 #endif
  27
  28 #if IGNITE_ON_P0
  29 #define AO_IGNITER_DROGUE       P0_5
  30 #define AO_IGNITER_MAIN         P0_4
  31 #define AO_IGNITER_DIR          P0DIR
  32 #define AO_IGNITER_DROGUE_BIT   (1 << 5)
  33 #define AO_IGNITER_MAIN_BIT     (1 << 4)
  34 #endif
  35
  36 /* test these values with real igniters */
  37 #define AO_IGNITER_OPEN         1000
  38 #define AO_IGNITER_CLOSED       7000
  39 #define AO_IGNITER_FIRE_TIME    AO_MS_TO_TICKS(50)
  40 #define AO_IGNITER_CHARGE_TIME  AO_MS_TO_TICKS(2000)
  41
  42 struct ao_ignition {
  43         uint8_t request;
  44         uint8_t fired;
  45         uint8_t firing;
  46 };
  47
  48 __xdata struct ao_ignition ao_ignition[2];
  49
  50 void
  51 ao_ignite(enum ao_igniter igniter) __critical
  52 {
  53         ao_ignition[igniter].request = 1;
  54         ao_wakeup(&ao_ignition);
  55 }
  56
  57 enum ao_igniter_status
  58 ao_igniter_status(enum ao_igniter igniter)
  59 {
  60         __xdata struct ao_adc adc;
  61         __pdata int16_t value;
  62         __pdata uint8_t request, firing, fired;
  63
  64         __critical {
  65                 ao_adc_get(&adc);
  66                 request = ao_ignition[igniter].request;
  67                 fired = ao_ignition[igniter].fired;
  68                 firing = ao_ignition[igniter].firing;
  69         }
  70         if (firing || (request && !fired))
  71                 return ao_igniter_active;
  72
  73         value = (AO_IGNITER_CLOSED>>1);
  74         switch (igniter) {
  75         case ao_igniter_drogue:
  76                 value = adc.sense_d;
  77                 break;
  78         case ao_igniter_main:
  79                 value = adc.sense_m;
  80                 break;
  81         }
  82         if (value < AO_IGNITER_OPEN)
  83                 return ao_igniter_open;
  84         else if (value > AO_IGNITER_CLOSED)
  85                 return ao_igniter_ready;
  86         else
  87                 return ao_igniter_unknown;
  88 }
  89
  90 void
  91 ao_igniter_fire(enum ao_igniter igniter) __critical
  92 {
  93         ao_ignition[igniter].firing = 1;
  94         switch(ao_config.ignite_mode) {
  95         case AO_IGNITE_MODE_DUAL:
  96                 switch (igniter) {
  97                 case ao_igniter_drogue:
  98                         AO_IGNITER_DROGUE = 1;
  99                         ao_delay(AO_IGNITER_FIRE_TIME);
 100                         AO_IGNITER_DROGUE = 0;
 101                         break;
 102                 case ao_igniter_main:
 103                         AO_IGNITER_MAIN = 1;
 104                         ao_delay(AO_IGNITER_FIRE_TIME);
 105                         AO_IGNITER_MAIN = 0;
 106                         break;
 107                 }
 108                 break;
 109         case AO_IGNITE_MODE_APOGEE:
 110                 switch (igniter) {
 111                 case ao_igniter_drogue:
 112                         AO_IGNITER_DROGUE = 1;
 113                         ao_delay(AO_IGNITER_FIRE_TIME);
 114                         AO_IGNITER_DROGUE = 0;
 115                         ao_delay(AO_IGNITER_CHARGE_TIME);
 116                         AO_IGNITER_MAIN = 1;
 117                         ao_delay(AO_IGNITER_FIRE_TIME);
 118                         AO_IGNITER_MAIN = 0;
 119                         break;
 120                 }
 121                 break;
 122         case AO_IGNITE_MODE_MAIN:
 123                 switch (igniter) {
 124                 case ao_igniter_main:
 125                         AO_IGNITER_DROGUE = 1;
 126                         ao_delay(AO_IGNITER_FIRE_TIME);
 127                         AO_IGNITER_DROGUE = 0;
 128                         ao_delay(AO_IGNITER_CHARGE_TIME);
 129                         AO_IGNITER_MAIN = 1;
 130                         ao_delay(AO_IGNITER_FIRE_TIME);
 131                         AO_IGNITER_MAIN = 0;
 132                         break;
 133                 }
 134                 break;
 135         }
 136         ao_ignition[igniter].firing = 0;
 137 }
 138
 139 void
 140 ao_igniter(void)
 141 {
 142         __xdata enum ao_ignter igniter;
 143
 144         ao_config_get();
 145         for (;;) {
 146                 ao_sleep(&ao_ignition);
 147                 for (igniter = ao_igniter_drogue; igniter <= ao_igniter_main; igniter++) {
 148                         if (ao_ignition[igniter].request && !ao_ignition[igniter].fired) {
 149                                 if (igniter == ao_igniter_drogue && ao_config.apogee_delay)
 150                                         ao_delay(AO_SEC_TO_TICKS(ao_config.apogee_delay));
 151
 152                                 ao_igniter_fire(igniter);
 153                                 ao_delay(AO_IGNITER_CHARGE_TIME);
 154                                 ao_ignition[igniter].fired = 1;
 155                         }
 156                 }
 157         }
 158 }
 159
 160 void
 161 ao_ignite_manual(void)
 162 {
 163         ao_cmd_white();
 164         if (!ao_match_word("DoIt"))
 165                 return;
 166         ao_cmd_white();
 167         if (ao_cmd_lex_c == 'm') {
 168                 if(ao_match_word("main"))
 169                         ao_igniter_fire(ao_igniter_main);
 170         } else {
 171                 if(ao_match_word("drogue"))
 172                         ao_igniter_fire(ao_igniter_drogue);
 173         }
 174 }
 175
 176 static __code char * __code igniter_status_names[] = {
 177         "unknown", "ready", "active", "open"
 178 };
 179
 180 void
 181 ao_ignite_print_status(enum ao_igniter igniter, __code char *name) __reentrant
 182 {
 183         enum ao_igniter_status status = ao_igniter_status(igniter);
 184         printf("Igniter: %6s Status: %s\n",
 185                name,
 186                igniter_status_names[status]);
 187 }
 188
 189 void
 190 ao_ignite_test(void)
 191 {
 192         ao_ignite_print_status(ao_igniter_drogue, "drogue");
 193         ao_ignite_print_status(ao_igniter_main, "main");
 194 }
 195
 196 __code struct ao_cmds ao_ignite_cmds[] = {
 197         { ao_ignite_manual,     "i <key> {main|drogue}\0Fire igniter. <key> is doit with D&I" },
 198         { ao_ignite_test,       "t\0Test igniter" },
 199         { 0,    NULL },
 200 };
 201
 202 __xdata struct ao_task ao_igniter_task;
 203
 204 void
 205 ao_ignite_set_pins(void)
 206 {
 207         AO_IGNITER_DROGUE = 0;
 208         AO_IGNITER_MAIN = 0;
 209         AO_IGNITER_DIR |= AO_IGNITER_DROGUE_BIT | AO_IGNITER_MAIN_BIT;
 210 }
 211
 212 void
 213 ao_igniter_init(void)
 214 {
 215         ao_ignite_set_pins();
 216         ao_cmd_register(&ao_ignite_cmds[0]);
 217         ao_add_task(&ao_igniter_task, ao_igniter, "igniter");
 218 }