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diff --git a/util_spectral_scan/src/util_spectral_scan.c b/util_spectral_scan/src/util_spectral_scan.c
index d2aecda..cbc8377 100644
--- a/util_spectral_scan/src/util_spectral_scan.c
+++ b/util_spectral_scan/src/util_spectral_scan.c
@@ -30,6 +30,7 @@ Maintainer: Michael Coracin
#include <stdlib.h> /* EXIT atoi */
#include <unistd.h> /* getopt */
#include <string.h>
+#include <signal.h>
#include "loragw_aux.h"
#include "loragw_reg.h"
@@ -66,11 +67,22 @@ Maintainer: Michael Coracin
/* -------------------------------------------------------------------------- */
/* --- GLOBAL VARIABLES ----------------------------------------------------- */
+bool shutdown_signal_recv = false;
+
+void signalHandler() {
+ shutdown_signal_recv = true;
+}
+
+
/* -------------------------------------------------------------------------- */
/* --- MAIN FUNCTION -------------------------------------------------------- */
int main( int argc, char ** argv )
{
+
+ signal(SIGINT, signalHandler);
+ signal(SIGTERM, signalHandler);
+
int i, j, k; /* loop and temporary variables */
int x; /* return code for functions */
int32_t reg_val;
@@ -200,6 +212,10 @@ int main( int argc, char ** argv )
}
}
+ if (shutdown_signal_recv) {
+ return 0;
+ }
+
/* Start message */
printf("+++ Start spectral scan of LoRa gateway channels +++\n");
@@ -264,7 +280,7 @@ int main( int argc, char ** argv )
printf("ERROR: Failed to disconnect from FPGA\n");
return EXIT_FAILURE;
}
- x = lgw_connect(false, LGW_DEFAULT_NOTCH_FREQ); /* FPGA reset/configure */
+ x = lgw_connect(true, LGW_DEFAULT_NOTCH_FREQ); /* FPGA reset/configure */
if(x != 0) {
printf("ERROR: Failed to connect to FPGA\n");
return EXIT_FAILURE;
@@ -324,6 +340,9 @@ int main( int argc, char ** argv )
do {
wait_ms(10);
lgw_fpga_reg_r(LGW_FPGA_STATUS, ®_val);
+ if (shutdown_signal_recv) {
+ break;
+ }
}
while((TAKE_N_BITS_FROM((uint8_t)reg_val, 0, 5)) != 1); /* Clear has started */
@@ -346,6 +365,9 @@ int main( int argc, char ** argv )
do {
wait_ms(1000);
lgw_fpga_reg_r(LGW_FPGA_STATUS, ®_val);
+ if (shutdown_signal_recv) {
+ break;
+ }
}
while((TAKE_N_BITS_FROM((uint8_t)reg_val, 5, 1)) != 1);
@@ -382,6 +404,10 @@ int main( int argc, char ** argv )
}
fprintf(log_file, "\n");
printf("\n");
+
+ if (shutdown_signal_recv) {
+ break;
+ }
}
fclose(log_file);
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