diff options
Diffstat (limited to 'src-avr/ao_ignite.c')
| -rw-r--r-- | src-avr/ao_ignite.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/src-avr/ao_ignite.c b/src-avr/ao_ignite.c new file mode 100644 index 00000000..7874ee01 --- /dev/null +++ b/src-avr/ao_ignite.c @@ -0,0 +1,182 @@ +/* + * Copyright © 2009 Keith Packard <keithp@keithp.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +#include "ao.h" + +#if IGNITE_ON_P2 +#define AO_IGNITER_DROGUE P2_3 +#define AO_IGNITER_MAIN P2_4 +#define AO_IGNITER_DIR P2DIR +#define AO_IGNITER_DROGUE_BIT (1 << 3) +#define AO_IGNITER_MAIN_BIT (1 << 4) +#endif + +#if IGNITE_ON_P0 +#define AO_IGNITER_DROGUE P0_5 +#define AO_IGNITER_MAIN P0_4 +#define AO_IGNITER_DIR P0DIR +#define AO_IGNITER_DROGUE_BIT (1 << 5) +#define AO_IGNITER_MAIN_BIT (1 << 4) +#endif + +/* test these values with real igniters */ +#define AO_IGNITER_OPEN 1000 +#define AO_IGNITER_CLOSED 7000 +#define AO_IGNITER_FIRE_TIME AO_MS_TO_TICKS(50) +#define AO_IGNITER_CHARGE_TIME AO_MS_TO_TICKS(2000) + +struct ao_ignition { + uint8_t request; + uint8_t fired; + uint8_t firing; +}; + +__xdata struct ao_ignition ao_ignition[2]; + +void +ao_ignite(enum ao_igniter igniter) __critical +{ + ao_ignition[igniter].request = 1; + ao_wakeup(&ao_ignition[0]); +} + +enum ao_igniter_status +ao_igniter_status(enum ao_igniter igniter) +{ + __xdata struct ao_adc adc; + __xdata int16_t value; + __xdata uint8_t request, firing, fired; + + __critical { + ao_adc_get(&adc); + request = ao_ignition[igniter].request; + fired = ao_ignition[igniter].fired; + firing = ao_ignition[igniter].firing; + } + if (firing || (request && !fired)) + return ao_igniter_active; + + value = (AO_IGNITER_CLOSED>>1); + switch (igniter) { + case ao_igniter_drogue: + value = adc.sense_d; + break; + case ao_igniter_main: + value = adc.sense_m; + break; + } + if (value < AO_IGNITER_OPEN) + return ao_igniter_open; + else if (value > AO_IGNITER_CLOSED) + return ao_igniter_ready; + else + return ao_igniter_unknown; +} + +void +ao_igniter_fire(enum ao_igniter igniter) __critical +{ + ao_ignition[igniter].firing = 1; + switch (igniter) { + case ao_igniter_drogue: + AO_IGNITER_DROGUE = 1; + ao_delay(AO_IGNITER_FIRE_TIME); + AO_IGNITER_DROGUE = 0; + break; + case ao_igniter_main: + AO_IGNITER_MAIN = 1; + ao_delay(AO_IGNITER_FIRE_TIME); + AO_IGNITER_MAIN = 0; + break; + } + ao_ignition[igniter].firing = 0; +} + +void +ao_igniter(void) +{ + __xdata enum ao_ignter igniter; + + ao_config_get(); + for (;;) { + ao_sleep(&ao_ignition); + for (igniter = ao_igniter_drogue; igniter <= ao_igniter_main; igniter++) { + if (ao_ignition[igniter].request && !ao_ignition[igniter].fired) { + if (igniter == ao_igniter_drogue && ao_config.apogee_delay) + ao_delay(AO_SEC_TO_TICKS(ao_config.apogee_delay)); + + ao_igniter_fire(igniter); + ao_delay(AO_IGNITER_CHARGE_TIME); + ao_ignition[igniter].fired = 1; + } + } + } +} + +void +ao_ignite_manual(void) +{ + ao_cmd_white(); + if (!ao_match_word("DoIt")) + return; + ao_cmd_white(); + if (ao_cmd_lex_c == 'm') { + if(ao_match_word("main")) + ao_igniter_fire(ao_igniter_main); + } else { + if(ao_match_word("drogue")) + ao_igniter_fire(ao_igniter_drogue); + } +} + +static __code char *igniter_status_names[] = { + "unknown", "ready", "active", "open" +}; + +void +ao_ignite_print_status(enum ao_igniter igniter, __code char *name) __reentrant +{ + enum ao_igniter_status status = ao_igniter_status(igniter); + printf("Igniter: %6s Status: %s\n", + name, + igniter_status_names[status]); +} + +void +ao_ignite_test(void) +{ + ao_ignite_print_status(ao_igniter_drogue, "drogue"); + ao_ignite_print_status(ao_igniter_main, "main"); +} + +__code struct ao_cmds ao_ignite_cmds[] = { + { ao_ignite_manual, "i <key> {main|drogue}\0Fire igniter. <key> is doit with D&I" }, + { ao_ignite_test, "t\0Test igniter continuity" }, + { 0, NULL }, +}; + +__xdata struct ao_task ao_igniter_task; + +void +ao_igniter_init(void) +{ + AO_IGNITER_DROGUE = 0; + AO_IGNITER_MAIN = 0; + AO_IGNITER_DIR |= AO_IGNITER_DROGUE_BIT | AO_IGNITER_MAIN_BIT; + ao_cmd_register(&ao_ignite_cmds[0]); + ao_add_task(&ao_igniter_task, ao_igniter, "igniter"); +} |