Carrier detect LED written in C for speed.

aprs_utils/carrier_detect/carrier_detect_led.c

@@ -0,0 +1,22 @@
+#include <pigpio.h>
+#include <stdio.h>
+
+#define DCD_LED 17
+
+int main()
+{
+	if (gpioInitialise() < 0)
+	{
+	   // pigpio initialisation failed.
+	   printf("pigpio failed");
+	}
+	else
+	{
+	   // pigpio initialised okay.
+	   gpioSetMode(DCD_LED, PI_OUTPUT); // Set DCD_LED as output
+	   gpioWrite(DCD_LED, 1); // Set DCD_LED high
+	   gpioSleep(PI_TIME_RELATIVE, 1, 0);     // sleep for one second
+	   gpioWrite(DCD_LED, 0); // Set DCD_LED low
+	   gpioTerminate();
+	}
+}

aprs_utils/carrier_detect/howto-compile.txt

@@ -0,0 +1 @@
+gcc -Wall -pthread -o prog dcd.c -lpigpio -lrt

aprs_utils/process_traffic.sh

@@ -55,7 +55,7 @@ LAST_EPOCH_DATE="$(date -d"$CURRENT_DATE_TIME" +%s)"
 while read LINE
     do
 	# Light up carrier detect
-	/home/marcel/ham/aprs_utils/carrier_detect_led.sh  &
+	sudo /home/marcel/ham/aprs_utils/carrier_detect_led  &
 
         # Start filter for received messages to PE1RXF (all sufixes)
         # Messages addressed to PE1RXF are stored in file /home/marcel/ham/aprs_utils/aprs_received_messages.log