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