Multi band update

nanovna.h

@@ -18,7 +18,7 @@
  */
 #include "ch.h"
 
-#ifdef TINYSA_F303
+//#ifdef TINYSA_F303
 #ifdef TINYSA_F072
 #error "Remove comment for #ifdef TINYSA_F303"
 #endif
@@ -26,7 +26,7 @@
 #define TINYSA4
 #endif
 #define TINYSA4_PROTO
-#endif
+//#endif
 
 #ifdef TINYSA_F072
 #ifdef TINYSA_F303

plot.c

@@ -1590,6 +1590,12 @@ static void trace_print_value_string(     // Only used at one place
   } else
     freq += (setting.frequency_offset - FREQUENCY_SHIFT);
 
+  int negative = (freq > HALF_FREQ);
+  if (negative) {
+    freq = - freq;
+    *ptr2++ = '-';
+  }
+
   // For CW mode output time
   if (FREQ_IS_CW()) {
     plot_printf(ptr2, sizeof(buf2) - 9, "%.3Fs", idx*setting.actual_sweep_time_us/(float)((sweep_points - 1)*ONE_SECOND_TIME));
@@ -1602,17 +1608,11 @@ static void trace_print_value_string(     // Only used at one place
         step = step*10;
       }
     }
-    int negative = (freq > HALF_FREQ);
-    if (negative)
-      freq = - freq;
 #ifdef TINYSA4
     if (freq >= 1000000000)
       digits += 3;
 #endif
-    if (negative)
-      plot_printf(ptr2, sizeof(buf2) - 9, "-%9.*QHz", digits, freq);
-    else
-      plot_printf(ptr2, sizeof(buf2) - 9, "%9.*QHz", digits, freq);
+    plot_printf(ptr2, sizeof(buf2) - 9, "%9.*QHz", digits, freq);
   }
 #ifdef __LEVEL_METER__
 #ifdef TINYSA4

ui.c

@@ -3302,9 +3302,30 @@ static UI_FUNCTION_ADV_CALLBACK(menu_multi_band_acb)
     return;
   }
   dirty = true;
+  freq_t old_start = get_sweep_frequency(ST_START);
+  freq_t old_stop = get_sweep_frequency(ST_STOP);
   setting.multi_band = ! setting.multi_band;
   redraw_request|= REDRAW_AREA | REDRAW_FREQUENCY | REDRAW_CAL_STATUS;
-  if (setting.multi_band) menu_push_submenu(menu_band_select);
+  if (setting.multi_band) {
+    if (setting.bands[0].end == 0) {
+      setting.bands[0].start = old_start;
+      setting.bands[0].end = old_stop;
+    }
+    menu_push_submenu(menu_band_select);
+  } else {
+    for (int i=0;i< BANDS_MAX;i++) {
+      if (setting.bands[i].enabled) {
+        set_sweep_frequency(ST_START,setting.bands[i].start);
+        break;
+      }
+    }
+    for (int i=BANDS_MAX-1;i>=0;i--) {
+      if (setting.bands[i].enabled) {
+        set_sweep_frequency(ST_STOP,setting.bands[i].end);
+        break;
+      }
+    }
+  }
 }
 
 static UI_FUNCTION_ADV_CALLBACK(menu_multi_trace_acb)