Fix TS990S SWR read -- strange behavior of RM command reading first RM turned on for read

New SWR table too for TS990S
https://github.com/Hamlib/Hamlib/issues/1423

rigs/kenwood/kenwood.c

@@ -1100,6 +1100,15 @@ int kenwood_open(RIG *rig)
     // mismatched IDs can still be tested
     rig->state.rigport.retry = retry_save;
 
+
+    // TS-990S needs to ensure all RM meters are turned off as first one with read on gets read
+    // Any RM commands need to be ON/READ/OFF to allow other apps or threads to read meters
+
+    if (RIG_IS_TS990S)
+    {
+        kenwood_transaction(rig, "RM10;RM20;RM30;RM40;RM50;RM60;", NULL, 0);
+    }
+
     RETURNFUNC(RIG_OK);
 }
 

rigs/kenwood/kenwood.h

@@ -28,7 +28,7 @@
 #include "token.h"
 #include "idx_builtin.h"
 
-#define BACKEND_VER "20231031"
+#define BACKEND_VER "20231112"
 
 #define EOM_KEN ';'
 #define EOM_TH '\r'

rigs/kenwood/ts990s.c

@@ -59,9 +59,9 @@
 #define TS990S_SWR_CAL { 5, \
     { \
         {   0, 1.0f }, \
-        {   14, 1.5f }, \
-        {   28, 2.0f }, \
-        {   42, 3.0f }, \
+        {   7, 1.5f }, \
+        {   36, 3.0f }, \
+        {   43, 6.0f }, \
         {   70, 10.0f } \
     } }
 
@@ -647,7 +647,9 @@ int ts990s_get_level(RIG *rig, vfo_t vfo, setting_t level, value_t *val)
         break;
 
     case RIG_LEVEL_SWR:
-        retval = kenwood_safe_transaction(rig, "RM21", lvlbuf, sizeof(lvlbuf), 7);
+        // we need to turn on read, read it, and turn it off again
+        // first RM meter with read on is the that gets read with RM;
+        retval = kenwood_safe_transaction(rig, "RM21;RM;RM20", lvlbuf, sizeof(lvlbuf), 8);
 
         if (retval != RIG_OK)
         {

src/rig.c

@@ -2740,6 +2740,14 @@ int HAMLIB_API rig_get_mode(RIG *rig,
         *width = rig->state.cache.widthMainA;
         RETURNFUNC(RIG_OK);
     }
+    else if (vfo == RIG_VFO_B)
+    {
+        if (rig->state.cache.modeMainB == RIG_MODE_NONE)
+        {
+            retcode = caps->get_mode(rig, vfo, mode, width);
+            return retcode;
+        }
+    }
 
     if ((*mode != RIG_MODE_NONE && cache_ms_mode < rig->state.cache.timeout_ms)
             && cache_ms_width < rig->state.cache.timeout_ms)