From bbc82cb14d2ef172d92b88aca17135de8110b162 Mon Sep 17 00:00:00 2001
From: Zilog80 <rs1729@users.noreply.github.com>
Date: Sat, 12 Aug 2023 23:36:04 +0200
Subject: [PATCH] dft_detect: add Weathex WxR-301D

---
 scan/dft_detect.c | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/scan/dft_detect.c b/scan/dft_detect.c
index 01aeeac..32ea4cd 100644
--- a/scan/dft_detect.c
+++ b/scan/dft_detect.c
@@ -108,8 +108,13 @@ static char imet1rs_header[] =
 
 // C34/C50: 2400 baud, 1:2900Hz/0:4800Hz
 static char c34_preheader[] =
-"01010101010101010101010101010101";   // 2900 Hz tone
-// dft, dB-max(1000Hz..5000Hz) = 2900Hz ?
+    "01010101010101010101010101010101";   // 2900 Hz tone
+    // dft, dB-max(1000Hz..5000Hz) = 2900Hz ?
+
+
+static char weathex_header[] =
+    "10101010""10101010""10101010"       // AA AA AA (preamble)
+    "00101101""11010100"; //"10101010";  // 2D D4 55/AA
 
 
 typedef struct {
@@ -145,6 +150,7 @@ static float set_lpIQ = 0.0;
 #define tn_MRZ     12
 #define tn_MTS01   13
 #define tn_C34C50  15
+#define tn_WXR301  16
 #define tn_MK2LMS  18
 #define tn_IMET5   24
 #define tn_IMETa   25
@@ -152,10 +158,10 @@ static float set_lpIQ = 0.0;
 #define tn_IMET1rs 28
 #define tn_IMET1ab 29
 
-#define Nrs         15
-#define idxIMETafsk 12
-#define idxRS       13
-#define idxI4       14
+#define Nrs         16
+#define idxIMETafsk 13
+#define idxRS       14
+#define idxI4       15
 static rsheader_t rs_hdr[Nrs] = {
     { 2500, 0, 0, dfm_header,     1.0, 0.0, 0.65, 2, NULL, "DFM9",     tn_DFM,     0, 1, 0.0, 0.0}, // DFM6: -2 ?
     { 4800, 0, 0, rs41_header,    0.5, 0.0, 0.70, 2, NULL, "RS41",     tn_RS41,    0, 1, 0.0, 0.0},
@@ -168,6 +174,7 @@ static rsheader_t rs_hdr[Nrs] = {
     { 2400, 0, 0, mrz_header,     1.5, 0.0, 0.80, 2, NULL, "MRZ",      tn_MRZ,     0, 1, 0.0, 0.0},
     { 1200, 0, 0, mts01_header,   1.0, 0.0, 0.65, 2, NULL, "MTS01",    tn_MTS01,   0, 0, 0.0, 0.0},
     { 5800, 0, 0, c34_preheader,  1.5, 0.0, 0.80, 2, NULL, "C34C50",   tn_C34C50,  0, 2, 0.0, 0.0}, // C34/C50 2900 Hz tone
+    { 4800, 0, 0, weathex_header, 1.0, 0.0, 0.65, 2, NULL, "WXR301",   tn_WXR301,  0, 3, 0.0, 0.0},
     { 9600, 0, 0, imet1ab_header, 1.0, 0.0, 0.80, 2, NULL, "IMET1AB",  tn_IMET1ab, 1, 3, 0.0, 0.0}, // (rs_hdr[idxAB])
     { 9600, 0, 0, imet_preamble,  0.5, 0.0, 0.80, 4, NULL, "IMETafsk", tn_IMETa  , 1, 1, 0.0, 0.0}, // IMET1AB, IMET1RS (IQ)IMET4
     { 9600, 0, 0, imet1rs_header, 0.5, 0.0, 0.80, 2, NULL, "IMET1RS",  tn_IMET1rs, 0, 3, 0.0, 0.0}, // (rs_hdr[idxRS]) IMET4: lpIQ=0 ...
@@ -176,6 +183,7 @@ static rsheader_t rs_hdr[Nrs] = {
 
 static int idx_MTS01 = -1,
            idx_C34C50 = -1,
+           idx_WXR301 = -1,
            idx_IMET1AB = -1;
 
 
@@ -1133,6 +1141,9 @@ static int init_buffers() {
         #ifdef NOC34C50
         if ( strncmp(rs_hdr[j].type, "C34C50", 6) == 0 ) idx_C34C50 = j;
         #endif
+        #ifdef NOWXR301
+        if ( strncmp(rs_hdr[j].type, "WXR301", 5) == 0 ) idx_WXR301 = j;
+        #endif
         #ifdef NOIMET1AB
         if ( strncmp(rs_hdr[j].type, "IMET1AB", 7) == 0 ) idx_IMET1AB = j;
         #endif
@@ -1142,7 +1153,7 @@ static int init_buffers() {
         rs_hdr[j].spb = sample_rate/(float)rs_hdr[j].sps;
         rs_hdr[j].hLen = strlen(rs_hdr[j].header);
         rs_hdr[j].L = rs_hdr[j].hLen * rs_hdr[j].spb + 0.5;
-        if (j != idx_MTS01 && j != idx_C34C50 && j != idx_IMET1AB) {
+        if (j != idx_MTS01 && j != idx_C34C50 && j != idx_WXR301 && j != idx_IMET1AB) {
             if (rs_hdr[j].hLen > hLen) hLen = rs_hdr[j].hLen;
             if (rs_hdr[j].L > Lmax) Lmax = rs_hdr[j].L;
         }
@@ -1465,6 +1476,7 @@ int main(int argc, char **argv) {
 
                 if ( j == idx_MTS01 ) continue;   // only ifdef NOMTS01
                 if ( j == idx_C34C50 ) continue;  // only ifdef NOC34C50
+                if ( j == idx_WXR301 ) continue;  // only ifdef NOWXR301
                 if ( j == idx_IMET1AB ) continue; // only ifdef NOIMET1AB
 
                 mv0_pos[j] = mv_pos[j];