diff options
Diffstat (limited to 'src/drivers/ao_pad.c')
| -rw-r--r-- | src/drivers/ao_pad.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/src/drivers/ao_pad.c b/src/drivers/ao_pad.c new file mode 100644 index 00000000..21aa788d --- /dev/null +++ b/src/drivers/ao_pad.c @@ -0,0 +1,227 @@ +/* + * Copyright © 2012 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> +#include <ao_pad.h> +#include <ao_74hc497.h> + +__xdata uint8_t ao_pad_ignite; + +#define ao_pad_igniter_status(c) AO_PAD_IGNITER_STATUS_UNKNOWN +#define ao_pad_arm_status() AO_PAD_ARM_STATUS_UNKNOWN + +#if 0 +#define PRINTD(...) printf(__VA_ARGS__) +#else +#define PRINTD(...) +#endif + +static void +ao_pad_run(void) +{ + for (;;) { + while (!ao_pad_ignite) + ao_sleep(&ao_pad_ignite); + /* + * Actually set the pad bits + */ + AO_PAD_PORT = (AO_PAD_PORT & (~AO_PAD_ALL_PINS)) | ao_pad_ignite; + while (ao_pad_ignite) { + ao_pad_ignite = 0; + ao_delay(AO_PAD_FIRE_TIME); + } + AO_PAD_PORT &= ~(AO_PAD_ALL_PINS); + } +} + +static void +ao_pad_status(void) +{ + for (;;) { + ao_delay(AO_SEC_TO_TICKS(1)); +#if 0 + if (ao_igniter_status(ao_igniter_drogue) == ao_igniter_ready) { + if (ao_igniter_status(ao_igniter_main) == ao_igniter_ready) { + for (i = 0; i < 5; i++) { + ao_beep_for(AO_BEEP_MID, AO_MS_TO_TICKS(50)); + ao_delay(AO_MS_TO_TICKS(100)); + } + } else { + ao_beep_for(AO_BEEP_MID, AO_MS_TO_TICKS(200)); + } + } +#endif + } +} + +static __pdata uint8_t ao_pad_armed; +static __pdata uint16_t ao_pad_arm_time; +static __pdata uint8_t ao_pad_box; + +static void +ao_pad(void) +{ + static __xdata struct ao_pad_command command; + static __xdata struct ao_pad_query query; + int16_t time_difference; + uint8_t c; + + ao_led_off(AO_LED_RED); + ao_beep_for(AO_BEEP_MID, AO_MS_TO_TICKS(200)); + ao_pad_box = ao_74hc497_read(); + for (;;) { + flush(); + if (ao_radio_cmac_recv(&command, sizeof (command), 0) != AO_RADIO_CMAC_OK) + continue; + + PRINTD ("tick %d serial %d cmd %d channel %d\n", + command.tick, command.serial, command.cmd, command.channel); + + switch (command.cmd) { + case AO_LAUNCH_ARM: + if (command.box != ao_pad_box) { + PRINTD ("box number mismatch\n"); + break; + } + + if (command.channels & ~(AO_PAD_ALL_PINS)) + break; + + time_difference = command.tick - ao_time(); + PRINTD ("arm tick %d local tick %d\n", command.tick, ao_time()); + if (time_difference < 0) + time_difference = -time_difference; + if (time_difference > 10) { + PRINTD ("time difference too large %d\n", time_difference); + break; + } + PRINTD ("armed\n"); + ao_pad_armed = command.channels; + ao_pad_arm_time = ao_time(); + + /* fall through ... */ + + case AO_LAUNCH_QUERY: + if (command.box != ao_pad_box) { + PRINTD ("box number mismatch\n"); + break; + } + + query.tick = ao_time(); + query.box = ao_pad_box; + query.channels = AO_PAD_ALL_PINS; + query.armed = ao_pad_armed; + query.arm_status = ao_pad_arm_status(); + for (c = 0; c < AO_PAD_NUM; c++) + query.igniter_status[c] = ao_pad_igniter_status(c); + PRINTD ("query tick %d serial %d channel %d valid %d arm %d igniter %d\n", + query.tick, query.serial, query.channel, query.valid, query.arm_status, + query.igniter_status); + ao_radio_cmac_send(&query, sizeof (query)); + break; + case AO_LAUNCH_FIRE: + if (!ao_pad_armed) { + PRINTD ("not armed\n"); + break; + } + if ((uint16_t) (ao_time() - ao_pad_arm_time) > AO_SEC_TO_TICKS(20)) { + PRINTD ("late pad arm_time %d time %d\n", + ao_pad_arm_time, ao_time()); + break; + } + time_difference = command.tick - ao_time(); + if (time_difference < 0) + time_difference = -time_difference; + if (time_difference > 10) { + PRINTD ("time different too large %d\n", time_difference); + break; + } + PRINTD ("ignite\n"); + ao_pad_ignite = ao_pad_armed; + ao_wakeup(&ao_pad_ignite); + break; + } + } +} + +void +ao_pad_test(void) +{ +#if 0 + switch (ao_igniter_status(ao_igniter_drogue)) { + case ao_igniter_ready: + case ao_igniter_active: + printf ("Armed: "); + switch (ao_igniter_status(ao_igniter_main)) { + default: + printf("unknown status\n"); + break; + case ao_igniter_ready: + printf("igniter good\n"); + break; + case ao_igniter_open: + printf("igniter bad\n"); + break; + } + break; + default: + printf("Disarmed\n"); + } +#endif +} + +void +ao_pad_manual(void) +{ + ao_cmd_white(); + if (!ao_match_word("DoIt")) + return; + ao_cmd_white(); + ao_pad_ignite = 1; + ao_wakeup(&ao_pad_ignite); +} + +static __xdata struct ao_task ao_pad_task; +static __xdata struct ao_task ao_pad_ignite_task; +static __xdata struct ao_task ao_pad_status_task; + +__code struct ao_cmds ao_pad_cmds[] = { + { ao_pad_test, "t\0Test pad continuity" }, + { ao_pad_manual, "i <key>\0Fire igniter. <key> is doit with D&I" }, + { 0, NULL } +}; + +void +ao_pad_init(void) +{ +#if AO_PAD_NUM > 0 + ao_enable_output(AO_PAD_PORT, AO_PAD_PIN_0, AO_PAD_0, 0); +#endif +#if AO_PAD_NUM > 1 + ao_enable_output(AO_PAD_PORT, AO_PAD_PIN_1, AO_PAD_1, 0); +#endif +#if AO_PAD_NUM > 2 + ao_enable_output(AO_PAD_PORT, AO_PAD_PIN_2, AO_PAD_2, 0); +#endif +#if AO_PAD_NUM > 3 + ao_enable_output(AO_PAD_PORT, AO_PAD_PIN_3, AO_PAD_3, 0); +#endif + ao_cmd_register(&ao_pad_cmds[0]); + ao_add_task(&ao_pad_task, ao_pad, "pad listener"); + ao_add_task(&ao_pad_ignite_task, ao_pad_run, "pad igniter"); + ao_add_task(&ao_pad_status_task, ao_pad_status, "pad status"); +} |