FeatherHAB/wsprhab Changeset - b32b9376de92

Changeset - b32b9376de92

Parent rev.

Child rev.

[Not reviewed]

default

0 1 0

Ethan Zonca - 9 years ago 2016-10-11 22:04:28
ez@ethanzonca.com

Schedule wspr transmissions properly

1 file changed with 47 insertions and 8 deletions:

src/main.c

0 comments (0 inline, 0 general)

src/main.c

➞

Show inline comments

@@ @@ -9,62 +9,88 @@ @@
 #include "uart.h"
 #include "gpio.h"
 #include "wspr.h"
 #include "gps.h"
 // We have access to the 1PPS pin of the gps... could have trim routine for internal oscillator based on this when we have a fix
 // Probabl wake up 1 minute early -- 0.45min possible +/- on wakeup time with 15min sync intervals
 enum _state
+{
     SYSTEM_POWERUP_SYNC = 0, // on powerup, get a GPS fix and set the RTC
     SYSTEM_IDLE, // awaiting RTC interrupt for wakeup TODO wake up before scheduled time to get fix?
     SYSTEM_IDLE = 0, // awaiting RTC interrupt for wakeup TODO wake up before scheduled time to get fix?
     SYSTEM_GPSACQ, // RTC interrupted
     SYSTEM_WSPRTX, // Wait for timeslot and actually transmit the message
 };
 int main(void)
+{
     HAL_Init();
     sysclk_init();
     gpio_init();
     adc_init();
     i2c_init();
     wspr_init();
     uint32_t led_timer = HAL_GetTick();
     led_blink(4);
     uint16_t blink_rate = BLINK_FAST;
     uint8_t state = SYSTEM_GPSACQ;
     uint32_t gps_polltimer = 0;
     uint32_t fix_acq_starttime = 0;
     uint32_t nextwspr_time = 0;
     uint32_t last_wspr_tx_time = 0;
     uint8_t fix_ok = 0;
     uint8_t numsats = 0;
     while (1)
+    {
     	// Every 10 minutes, wake up and try to wspr
     	if(HAL_GetTick() - last_wspr_tx_time > 60000 * 10)
+    	{
     		state = SYSTEM_GPSACQ;
+    	}
         // Update fix status every 2 seconds
         if(HAL_GetTick() - gps_polltimer > 2000)
+        {
             if(gps_ison())
                 gps_update_data();
+            {
             	gps_update_data();
             	gps_getdata()->minute;
             	gps_getdata()->second;
             	// If odd minute
             	if(gps_getdata()->minute % 2)
+            	{
             		volatile uint8_t minute = gps_getdata()->minute;
             		// Wait until even minute, coming soon
             		nextwspr_time = HAL_GetTick() + (60000 - (gps_getdata()->second * 1000));
+            	}
             	// If even minute
             	else
+            	{
             		// Wait until odd minute, one minute and some change away
             		nextwspr_time = HAL_GetTick() + 60000 + (60000 - (gps_getdata()->second * 1000));
+            	}
+            }
             gps_polltimer = HAL_GetTick();
+        }
         switch(state)
+        {
             // Idling: sleep and wait for RTC timeslot trigger
             case SYSTEM_IDLE:
+            {
                 blink_rate = BLINK_SLOW;
@@ @@ -75,25 +101,25 @@ int main(void) @@
                 // Somehow go to another state when we get an interrupt
 //                state = SYSTEM_GPSACQ;
             } break;
             // Attempt to acquire GPS fix
             case SYSTEM_GPSACQ:
+            {
                 blink_rate = BLINK_FAST;
                 if(!gps_ison())
+                {
-                	fix_starttime = HAL_GetTick();
+                	fix_acq_starttime = HAL_GetTick();
                     gps_poweron(); // power on and initialize GPS module
+                }
                 if(gps_getdata()->fixtype > 0 && gps_getdata()->pdop < 5)
+                {
                     // Disable GPS module
                     gps_poweroff();
                     // TODO: Set RTC from GPS time
                     // TODO: Set RTC for countdown to next transmission timeslot!
@@ @@ -108,32 +134,45 @@ int main(void) @@
+                }
             } break;
             // Wait for wspr timeslot and start transmitting
             case SYSTEM_WSPRTX:
+            {
             	blink_rate = BLINK_SLOW;
                 // Wait for wspr countdown timer to expire and go to tx
 //                if(timeout_expired)
 //                {
 //                    wspr_transmit();
 //                }
             	// If we're after the minute but not more than 2s after the minute, start tx
             	if(HAL_GetTick() >= nextwspr_time)
+            	{
             		if(HAL_GetTick() < nextwspr_time + 2000)
+            		{
 						wspr_transmit();
 						last_wspr_tx_time = HAL_GetTick();
 						state = SYSTEM_IDLE;
+            		}
             		else
+            		{
             			// Window was missed, go back to idle, and try again after time delay
 						last_wspr_tx_time = HAL_GetTick();
             			state = SYSTEM_IDLE;
+            		}
+                }
                 // Schedule next wakeup (maybe 2mins prior ot timeslot if no osc trim)
                 // Next wakeup should enter SYSTEM_GPSACQ state...
 //                state = SYSTEM_IDLE;
             } break;
+        }
         if(HAL_GetTick() - led_timer > blink_rate)
+        {
             HAL_GPIO_TogglePin(LED_BLUE);
             led_timer = HAL_GetTick();
+        }
+    }

0 comments (0 inline, 0 general)