2 * Copyright © 2012 Keith Packard <keithp@keithp.com>
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.
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.
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.
20 #include <ao_74hc497.h>
21 #include <ao_radio_cmac.h>
23 static __xdata uint8_t ao_pad_ignite;
24 static __xdata struct ao_pad_command command;
25 static __xdata struct ao_pad_query query;
28 #define PRINTD(...) printf(__VA_ARGS__)
29 #define FLUSHD() flush()
39 while (!ao_pad_ignite)
40 ao_sleep(&ao_pad_ignite);
42 * Actually set the pad bits
44 AO_PAD_PORT = (AO_PAD_PORT & (~AO_PAD_ALL_PINS)) | ao_pad_ignite;
45 while (ao_pad_ignite) {
47 ao_delay(AO_PAD_FIRE_TIME);
49 AO_PAD_PORT &= ~(AO_PAD_ALL_PINS);
58 __pdata uint8_t prev = 0, cur = 0;
59 __pdata uint8_t beeping = 0;
60 __xdata struct ao_data *packet;
62 sample = ao_data_head;
66 while (sample == ao_data_head)
67 ao_sleep((void *) DATA_TO_XDATA(&ao_data_head));
70 packet = &ao_data_ring[sample];
71 sample = ao_data_ring_next(sample);
73 pyro = packet->adc.pyro;
75 #define VOLTS_TO_PYRO(x) ((int16_t) ((x) * 27.0 / 127.0 / 3.3 * 32767.0))
78 if (pyro > VOLTS_TO_PYRO(4))
79 query.arm_status = AO_PAD_ARM_STATUS_ARMED;
80 else if (pyro < VOLTS_TO_PYRO(1))
81 query.arm_status = AO_PAD_ARM_STATUS_DISARMED;
83 query.arm_status = AO_PAD_ARM_STATUS_UNKNOWN;
85 for (c = 0; c < AO_PAD_NUM; c++) {
86 int16_t sense = packet->adc.sense[c];
87 uint8_t status = AO_PAD_IGNITER_STATUS_UNKNOWN;
89 if (query.arm_status == AO_PAD_ARM_STATUS_ARMED) {
91 * pyro is run through a divider, so pyro = v_pyro * 27 / 127 ~= v_pyro / 20
92 * v_pyro = pyro * 127 / 27
102 * If the relay is closed, then sense will be 0
103 * If no igniter is present, then sense will be v_pyro * 27k/227k = pyro * 127 / 227 ~= pyro/2
104 * If igniter is present, then sense will be v_pyro * 27k/127k ~= v_pyro / 20 = pyro
107 if (sense <= pyro / 8)
108 status = AO_PAD_IGNITER_STATUS_NO_IGNITER_RELAY_CLOSED;
109 else if (pyro / 8 * 3 <= sense && sense <= pyro / 8 * 5)
110 status = AO_PAD_IGNITER_STATUS_NO_IGNITER_RELAY_OPEN;
111 else if (pyro / 8 * 7 <= sense) {
112 status = AO_PAD_IGNITER_STATUS_GOOD_IGNITER_RELAY_OPEN;
113 cur |= AO_LED_CONTINUITY(c);
116 query.igniter_status[c] = status;
119 ao_led_set_mask(cur, AO_LED_CONTINUITY_MASK);
123 if (pyro > VOLTS_TO_PYRO(9) && sample == 0) {
125 ao_beep(AO_BEEP_HIGH);
126 } else if (beeping) {
133 static __pdata uint8_t ao_pad_armed;
134 static __pdata uint16_t ao_pad_arm_time;
135 static __pdata uint8_t ao_pad_box;
136 static __xdata uint8_t ao_pad_disabled;
141 if (!ao_pad_disabled) {
143 ao_radio_recv_abort();
151 ao_wakeup (&ao_pad_disabled);
157 int16_t time_difference;
160 ao_beep_for(AO_BEEP_MID, AO_MS_TO_TICKS(200));
163 ao_led_on(AO_LED_POWER);
166 while (ao_pad_disabled)
167 ao_sleep(&ao_pad_disabled);
168 ret = ao_radio_cmac_recv(&command, sizeof (command), 0);
169 PRINTD ("cmac_recv %d\n", ret);
170 if (ret != AO_RADIO_CMAC_OK)
173 PRINTD ("tick %d box %d cmd %d channels %02x\n",
174 command.tick, command.box, command.cmd, command.channels);
176 switch (command.cmd) {
178 if (command.box != ao_pad_box) {
179 PRINTD ("box number mismatch\n");
183 if (command.channels & ~(AO_PAD_ALL_PINS))
186 time_difference = command.tick - ao_time();
187 PRINTD ("arm tick %d local tick %d\n", command.tick, ao_time());
188 if (time_difference < 0)
189 time_difference = -time_difference;
190 if (time_difference > 10) {
191 PRINTD ("time difference too large %d\n", time_difference);
195 ao_pad_armed = command.channels;
196 ao_pad_arm_time = ao_time();
198 /* fall through ... */
200 case AO_LAUNCH_QUERY:
201 if (command.box != ao_pad_box) {
202 PRINTD ("box number mismatch\n");
206 query.tick = ao_time();
207 query.box = ao_pad_box;
208 query.channels = AO_PAD_ALL_PINS;
209 query.armed = ao_pad_armed;
210 PRINTD ("query tick %d box %d channels %02x arm %d arm_status %d igniter %d\n",
211 query.tick, query.box, query.channels, query.armed,
212 query.arm_status, query.igniter_status);
213 ao_radio_cmac_send(&query, sizeof (query));
217 PRINTD ("not armed\n");
220 if ((uint16_t) (ao_time() - ao_pad_arm_time) > AO_SEC_TO_TICKS(20)) {
221 PRINTD ("late pad arm_time %d time %d\n",
222 ao_pad_arm_time, ao_time());
225 time_difference = command.tick - ao_time();
226 if (time_difference < 0)
227 time_difference = -time_difference;
228 if (time_difference > 10) {
229 PRINTD ("time different too large %d\n", time_difference);
233 ao_pad_ignite = ao_pad_armed;
234 ao_wakeup(&ao_pad_ignite);
245 printf ("Arm switch: ");
246 switch (query.arm_status) {
247 case AO_PAD_ARM_STATUS_ARMED:
250 case AO_PAD_ARM_STATUS_DISARMED:
251 printf ("Disarmed\n");
253 case AO_PAD_ARM_STATUS_UNKNOWN:
254 printf ("Unknown\n");
258 for (c = 0; c < AO_PAD_NUM; c++) {
260 switch (query.igniter_status[c]) {
261 case AO_PAD_IGNITER_STATUS_NO_IGNITER_RELAY_CLOSED: printf ("No igniter. Relay closed\n"); break;
262 case AO_PAD_IGNITER_STATUS_NO_IGNITER_RELAY_OPEN: printf ("No igniter. Relay open\n"); break;
263 case AO_PAD_IGNITER_STATUS_GOOD_IGNITER_RELAY_OPEN: printf ("Good igniter. Relay open\n"); break;
264 case AO_PAD_IGNITER_STATUS_UNKNOWN: printf ("Unknown\n"); break;
273 if (!ao_match_word("DoIt"))
276 if (ao_cmd_status != ao_cmd_success)
278 ao_pad_ignite = 1 << ao_cmd_lex_i;
279 ao_wakeup(&ao_pad_ignite);
282 static __xdata struct ao_task ao_pad_task;
283 static __xdata struct ao_task ao_pad_ignite_task;
284 static __xdata struct ao_task ao_pad_monitor_task;
286 __code struct ao_cmds ao_pad_cmds[] = {
287 { ao_pad_test, "t\0Test pad continuity" },
288 { ao_pad_manual, "i <key> <n>\0Fire igniter. <key> is doit with D&I" },
296 ao_enable_output(AO_PAD_PORT, AO_PAD_PIN_0, AO_PAD_0, 0);
299 ao_enable_output(AO_PAD_PORT, AO_PAD_PIN_1, AO_PAD_1, 0);
302 ao_enable_output(AO_PAD_PORT, AO_PAD_PIN_2, AO_PAD_2, 0);
305 ao_enable_output(AO_PAD_PORT, AO_PAD_PIN_3, AO_PAD_3, 0);
307 ao_cmd_register(&ao_pad_cmds[0]);
308 ao_add_task(&ao_pad_task, ao_pad, "pad listener");
309 ao_add_task(&ao_pad_ignite_task, ao_pad_run, "pad igniter");
310 ao_add_task(&ao_pad_monitor_task, ao_pad_monitor, "pad monitor");