Add help to N command in rigctl

src/sprintflst.c

@@ -852,6 +852,37 @@ int rig_sprintf_spectrum_avg_modes(char *str, int nlen,
     return len;
 }
 
+int rig_sprintf_tuning_steps(char *str, int nlen, const struct tuning_step_list *tuning_step_list)
+{
+    int i, len = 0;
+
+    *str = '\0';
+    
+    for (i = 0; i < HAMLIB_TSLSTSIZ; i++)
+    {
+        int lentmp;
+
+        if (tuning_step_list[i].modes == RIG_MODE_NONE)
+        {
+            break;
+        }
+
+        lentmp = snprintf(str + len, nlen - len, "%s%d", i>0?", ":"", (int)tuning_step_list[i].ts);
+
+        if (len < 0 || lentmp >= nlen - len)
+        {
+            rig_debug(RIG_DEBUG_ERR, "%s(%d): overflowed str buffer\n", __FILE__, __LINE__);
+            break;
+        }
+
+        len += lentmp;
+        check_buffer_overflow(str, len, nlen);
+    }
+
+    return len;
+
+}
+
 char *get_rig_conf_type(enum rig_conf_e type)
 {
     switch (type)

src/sprintflst.h

@@ -51,6 +51,7 @@ extern HAMLIB_EXPORT( int ) rot_sprintf_status(char *str, int len, rot_status_t
 extern HAMLIB_EXPORT( int ) rig_sprintf_spectrum_modes(char *str, int nlen, const enum rig_spectrum_mode_e *modes);
 extern HAMLIB_EXPORT( int ) rig_sprintf_spectrum_spans(char *str, int nlen, const freq_t *spans);
 extern HAMLIB_EXPORT( int )  rig_sprintf_spectrum_avg_modes(char *str, int nlen, const struct rig_spectrum_avg_mode *avg_modes);
+extern HAMLIB_EXPORT( int )  rig_sprintf_tuning_steps(char *str, int nlen, const struct tuning_step_list *tuning_step_list);
 extern HAMLIB_EXPORT( char *) get_rig_conf_type(enum rig_conf_e type);
 extern HAMLIB_EXPORT( int ) print_ext_param(const struct confparams *cfp, rig_ptr_t ptr);
 

tests/rigctl_parse.c

@@ -3191,9 +3191,17 @@ declare_proto_rig(get_split_vfo)
 declare_proto_rig(set_ts)
 {
     unsigned long ts;
+    char s[SPRINTF_MAX_SIZE];
 
     ENTERFUNC2;
 
+    if (!strcmp(arg1, "?"))
+    {
+        rig_sprintf_tuning_steps(s, sizeof(s), rig->caps->tuning_steps);
+        fprintf(fout, "%s\n", s);
+        RETURNFUNC2(RIG_OK);
+    }
+
     CHKSCN1ARG(sscanf(arg1, "%lu", &ts));
 
     RETURNFUNC2(rig_set_ts(rig, vfo, ts));