From 23d8d0cc77099b3b04dc0b796a02f8795aeb3c47 Mon Sep 17 00:00:00 2001
From: lwvmobile <lwvmobile@gmail.com>
Date: Wed, 13 Sep 2023 11:05:28 -0400
Subject: [PATCH] Add RTL Device Enum and SN support to CLI;

---
 src/dsd_main.c | 37 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 36 insertions(+), 1 deletion(-)

diff --git a/src/dsd_main.c b/src/dsd_main.c
index c952dc3..f52da52 100644
--- a/src/dsd_main.c
+++ b/src/dsd_main.c
@@ -26,6 +26,10 @@
 #include "provoice_const.h"
 #include "git_ver.h"
 
+#ifdef USE_RTLSDR
+#include <rtl-sdr.h>
+#endif
+
 volatile uint8_t exitflag; //fix for issue #136
 
 int pretty_colors()
@@ -1156,7 +1160,7 @@ usage ()
   printf ("RTL-SDR options:\n");
   printf (" Usage: rtl:dev:freq:gain:ppm:bw:sq:udp\n");
   printf ("  NOTE: all arguments after rtl are optional now for trunking, but user configuration is recommended\n");
-  printf ("  dev  <num>    RTL-SDR Device Index Number\n");
+  printf ("  dev  <num>    RTL-SDR Device Index Number or 8 Digit Serial Number, no strings! (default 0)\n");
   printf ("  freq <num>    RTL-SDR Frequency (851800000 or 851.8M) \n");
   printf ("  gain <num>    RTL-SDR Device Gain (0-49)(default = 0; Hardware AGC recommended)\n");
   printf ("  ppm  <num>    RTL-SDR PPM Error (default = 0)\n");
@@ -2485,6 +2489,37 @@ main (int argc, char **argv)
       else goto RTLEND;
 
       RTLEND:
+
+      //use to list out all detected RTL dongles
+      char vendor[256], product[256], serial[256], userdev[256];
+      int i, device_count = 0;
+      device_count = rtlsdr_get_device_count();
+      if (!device_count)
+      {
+        fprintf(stderr, "No supported devices found.\n");
+        exitflag = 1;
+      }
+      else fprintf(stderr, "Found %d device(s):\n", device_count);
+      for (i = 0; i < device_count; i++)
+      {
+        rtlsdr_get_device_usb_strings(i, vendor, product, serial);
+        fprintf(stderr, "  %d:  %s, %s, SN: %s\n", i, vendor, product, serial);
+
+        sprintf (userdev, "%08d", opts.rtl_dev_index);
+
+        //check by index first, then by serial
+        if (opts.rtl_dev_index == i)
+        {
+          fprintf (stderr, "Selected Device #%d with Serial Number: %s \n", i, serial);
+        }
+        else if (strcmp (userdev, serial) == 0)
+        {
+          fprintf (stderr, "Selected Device #%d with Serial Number: %s \n", i, serial);
+          opts.rtl_dev_index = i;
+        }
+        
+      }
+
       fprintf (stderr, "Dev %d ", opts.rtl_dev_index);
       fprintf (stderr, "Freq %d ", opts.rtlsdr_center_freq);
       fprintf (stderr, "Gain %d ", opts.rtl_gain_value);