TM-D710: Rewrite the whole backend, since most of it was not working anyway. TM-D710 protocol is significantly different from TM-D700 or the TH handheld ones. Most features work, but the control protocol is quite limited: for example, it is not possible to change the selected frequency band of a VFO. Additionally, selecting MEM VFO uses the previously selected band (VFOA/VFOB), since there are no separate MEM VFO definitions for A/B bands. Added FMN mode to string constants, so that it can be used with the set_mode command.

(cherry picked from commit 3cdbad1064)

kenwood/kenwood.h

@@ -33,7 +33,7 @@
 #define EOM_TH '\r'
 
 #define KENWOOD_MODE_TABLE_MAX  24
-#define KENWOOD_MAX_BUF_LEN   50 /* max answer len, arbitrary */
+#define KENWOOD_MAX_BUF_LEN   128 /* max answer len, arbitrary */
 
 
 /* Tokens for Parameters common to multiple rigs.

src/misc.c

@@ -319,6 +319,7 @@ static struct
     { RIG_MODE_LSB, "LSB" },
     { RIG_MODE_RTTY, "RTTY" },
     { RIG_MODE_FM, "FM" },
+    { RIG_MODE_FMN, "FMN" },
     { RIG_MODE_WFM, "WFM" },
     { RIG_MODE_CWR, "CWR" },
     { RIG_MODE_RTTYR, "RTTYR" },