#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
+static __xdata uint8_t ao_pad_ignite;
+static __xdata struct ao_pad_command command;
+static __xdata struct ao_pad_query query;
#if 0
#define PRINTD(...) printf(__VA_ARGS__)
+#define FLUSHD() flush()
#else
#define PRINTD(...)
+#define FLUSHD()
#endif
static void
}
static void
-ao_pad_status(void)
+ao_pad_monitor(void)
{
uint8_t c;
uint8_t sample;
- __pdata uint8_t prev = 0, cur = 0;
- __pdata uint8_t beeping = 0;
+ __pdata uint8_t prev = 0, cur = 0;
+ __pdata uint8_t beeping = 0;
__xdata struct ao_data *packet;
sample = ao_data_head;
#define VOLTS_TO_PYRO(x) ((int16_t) ((x) * 27.0 / 127.0 / 3.3 * 32767.0))
cur = 0;
- if (pyro > VOLTS_TO_PYRO(4)) {
- for (c = 0; c < AO_PAD_NUM; c++) {
- int16_t sense = packet->adc.sense[c];
+ if (pyro > VOLTS_TO_PYRO(4))
+ query.arm_status = AO_PAD_ARM_STATUS_ARMED;
+ else if (pyro < VOLTS_TO_PYRO(1))
+ query.arm_status = AO_PAD_ARM_STATUS_DISARMED;
+ else
+ query.arm_status = AO_PAD_ARM_STATUS_UNKNOWN;
+
+ for (c = 0; c < AO_PAD_NUM; c++) {
+ int16_t sense = packet->adc.sense[c];
+ uint8_t status = AO_PAD_IGNITER_STATUS_UNKNOWN;
+
+ if (query.arm_status == AO_PAD_ARM_STATUS_ARMED) {
+ /*
+ * pyro is run through a divider, so pyro = v_pyro * 27 / 127 ~= v_pyro / 20
+ * v_pyro = pyro * 127 / 27
+ *
+ * v_pyro \
+ * 100k igniter
+ * output /
+ * 100k \
+ * sense relay
+ * 27k /
+ * gnd ---
+ *
+ * If the relay is closed, then sense will be 0
+ * If no igniter is present, then sense will be v_pyro * 27k/227k = pyro * 127 / 227 ~= pyro/2
+ * If igniter is present, then sense will be v_pyro * 27k/127k ~= v_pyro / 20 = pyro
+ */
- if (sense >= pyro / 4 * 3)
+ if (sense <= pyro / 8)
+ status = AO_PAD_IGNITER_STATUS_NO_IGNITER_RELAY_CLOSED;
+ else if (pyro / 8 * 3 <= sense && sense <= pyro / 8 * 5)
+ status = AO_PAD_IGNITER_STATUS_NO_IGNITER_RELAY_OPEN;
+ else if (pyro / 8 * 7 <= sense) {
+ status = AO_PAD_IGNITER_STATUS_GOOD_IGNITER_RELAY_OPEN;
cur |= AO_LED_CONTINUITY(c);
+ }
}
+ query.igniter_status[c] = status;
}
if (cur != prev) {
ao_led_set_mask(cur, AO_LED_CONTINUITY_MASK);
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_beep_for(AO_BEEP_MID, AO_MS_TO_TICKS(200));
ao_pad_box = ao_74hc497_read();
ao_led_set(0);
ao_led_on(AO_LED_POWER);
for (;;) {
- flush();
+ FLUSHD();
while (ao_pad_disabled)
ao_sleep(&ao_pad_disabled);
if (ao_radio_cmac_recv(&command, sizeof (command), 0) != AO_RADIO_CMAC_OK)
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);
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;
- }
+ uint8_t c;
+
+ printf ("Arm switch: ");
+ switch (query.arm_status) {
+ case AO_PAD_ARM_STATUS_ARMED:
+ printf ("Armed\n");
+ break;
+ case AO_PAD_ARM_STATUS_DISARMED:
+ printf ("Disarmed\n");
+ break;
+ case AO_PAD_ARM_STATUS_UNKNOWN:
+ printf ("Unknown\n");
break;
- default:
- printf("Disarmed\n");
}
-#endif
+
+ for (c = 0; c < AO_PAD_NUM; c++) {
+ printf ("Pad %d: ");
+ switch (query.igniter_status[c]) {
+ case AO_PAD_IGNITER_STATUS_NO_IGNITER_RELAY_CLOSED: printf ("No igniter. Relay closed\n"); break;
+ case AO_PAD_IGNITER_STATUS_NO_IGNITER_RELAY_OPEN: printf ("No igniter. Relay open\n"); break;
+ case AO_PAD_IGNITER_STATUS_GOOD_IGNITER_RELAY_OPEN: printf ("Good igniter. Relay open\n"); break;
+ case AO_PAD_IGNITER_STATUS_UNKNOWN: printf ("Unknown\n"); break;
+ }
+ }
}
void
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;
+static __xdata struct ao_task ao_pad_monitor_task;
__code struct ao_cmds ao_pad_cmds[] = {
{ ao_pad_test, "t\0Test pad continuity" },
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");
+ ao_add_task(&ao_pad_monitor_task, ao_pad_monitor, "pad monitor");
}
projects / fw / altos / blobdiff