Fix KX3 set_vfo

KX4 set_vfo may not work
https://github.com/Hamlib/Hamlib/issues/563

rigs/kenwood/elecraft.c

@@ -177,6 +177,7 @@ int elecraft_open(RIG *rig)
         rig_debug(RIG_DEBUG_VERBOSE, "%s: K2 level is %d, %s\n", __func__,
                   priv->k2_ext_lvl, elec_ext_id_str_lst[priv->k2_ext_lvl].id);
 
+        priv->is_k2 = 1;
         break;
 
     case RIG_MODEL_K3:
@@ -192,6 +193,9 @@ int elecraft_open(RIG *rig)
         priv->has_kpa3 = 0;
 
         if (strstr(buf, "P")) { priv->has_kpa3 = 1; }
+        if (strstr(buf, "R")) { priv->is_k3s = 1; }
+        else if (strncmp(&buf[13],"--",2)==0) { priv->is_k3 = 1; }
+        else if (strncmp(&buf[11],"----",4)==0) { priv->is_k4 = 1; }
 
         if (buf[13] == '0') // then we have a KX3 or KX2
         {
@@ -200,9 +204,15 @@ int elecraft_open(RIG *rig)
 
             switch (modelnum)
             {
-            case '1': model = "KX2"; break;
+            case '1': 
+                model = "KX2"; 
+                priv->is_kx2 = 1;
+                break;
 
-            case '2': model = "KX3"; break;
+            case '2': 
+                model = "KX3"; 
+                priv->is_kx3 = 1;
+                break;
 
             default:
                 rig_debug(RIG_DEBUG_ERR, "%s: Unknown Elecraft modelnum=%c, expected 1 or 2\n",
@@ -219,8 +229,7 @@ int elecraft_open(RIG *rig)
             if (strstr(buf, "R")) { model = "K3S"; }
         }
 
-        rig_debug(RIG_DEBUG_TRACE, "%s: model=%s, kpa3%d\n", __func__, model,
-                  priv->has_kpa3);
+        rig_debug(RIG_DEBUG_TRACE, "%s: model=%s, is_k2=%d, is_k3=%d, is_k3s=%d, is_kx3=%d, is_kx2=%d, is_k4=%d, kpa3=%d\n", __func__, model, priv->is_k2, priv->is_k3, priv->is_k3s, priv->is_kx3, priv->is_kx2, priv->is_k4, priv->has_kpa3);
 
         err = elecraft_get_extension_level(rig, "K2", &priv->k2_ext_lvl);
 

rigs/kenwood/k3.c

@@ -635,7 +635,7 @@ const struct rig_caps kx3_caps =
     .mfg_name =     "Elecraft",
     .version =      BACKEND_VER ".4",
     .copyright =        "LGPL",
-    .status =       RIG_STATUS_BETA,
+    .status =       RIG_STATUS_STABLE,
     .rig_type =     RIG_TYPE_TRANSCEIVER,
     .ptt_type =     RIG_PTT_RIG,
     .dcd_type =     RIG_DCD_RIG,
@@ -1160,15 +1160,18 @@ int k3_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
 
 /* The K3 changes "VFOs" by swapping the contents of
  * the upper display with the lower display.  This function
- * accomplishes this by sending the emulation command, SWT11;
+ * accomplishes this by sending the emulation command, SWT11, KX3 is SWT24;
  * to the K3 to emulate a tap of the A/B button.
  */
 
 int k3_set_vfo(RIG *rig, vfo_t vfo)
 {
     int err;
+    // Does SWT11 work for the K4 or do we need to emulate set/get vfo?
+    char *cmd = "SWT11";
+    struct kenwood_priv_data *priv = rig->state.priv;
 
-    rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);
+    ENTERFUNC;
 
     // vfo is toggle so we check first to see if we need to switch
     vfo_t tvfo;
@@ -1181,20 +1184,29 @@ int k3_set_vfo(RIG *rig, vfo_t vfo)
     
     if (tvfo == vfo) RETURNFUNC(RIG_OK);
 
-    err = kenwood_transaction(rig, "SWT11", NULL, 0);
+    if (priv->is_kx3)
+    {
+        cmd = "SWT24";
+    }
+    else if (priv->is_k4)
+    {
+        cmd = "AB2";
+    }
+    err = kenwood_transaction(rig, cmd, NULL, 0);
 
     if (err != RIG_OK)
     {
         RETURNFUNC(err);
     }
 
-    return RIG_OK;
+    RETURNFUNC(RIG_OK);
 }
 
 int k3_get_vfo(RIG *rig, vfo_t *vfo)
 {
     char buf[KENWOOD_MAX_BUF_LEN];
     int ret;
+    struct kenwood_priv_data *priv = rig->state.priv;
 
     ret = write_block(&rig->state.rigport, "IC;", 3);
 

rigs/kenwood/kenwood.h

@@ -134,6 +134,12 @@ struct kenwood_priv_data
     int has_rit2;  /* rig has set 2 rit command */
     int ag_format; /* which AG command is being used...see LEVEL_AF in kenwood.c*/
     int micgain_min, micgain_max; /* varies by rig so we figure it out automagically */
+    int is_k2;
+    int is_k3;
+    int is_k3s;
+    int is_kx3;
+    int is_kx2;
+    int is_k4;
 };