save domain mode

main.c

@@ -56,8 +56,6 @@ int8_t redraw_requested = FALSE;
 int8_t stop_the_world = FALSE;
 int16_t vbat = 0;
 
-uint8_t domain = DOMAIN_TIME;
-uint8_t tdrfunc = TDR_IMPULSE;
 static THD_WORKING_AREA(waThread1, 640);
 static THD_FUNCTION(Thread1, arg)
 {
@@ -116,7 +114,7 @@ static
 void
 transform_domain(void)
 {
-  if (domain != DOMAIN_TIME) return; // nothing to do for freq domain
+  if ((domain_mode & DOMAIN_MODE) != DOMAIN_TIME) return; // nothing to do for freq domain
   // use spi_buffer as temporary buffer
   // and calculate ifft for time domain
   float* tmp = (float*)spi_buffer;
@@ -132,7 +130,7 @@ transform_domain(void)
           measured[ch][i][0] /= 128.0;
           measured[ch][i][1] /= 128.0;
       }
-      if (tdrfunc == TDR_STEP) {
+      if ( (domain_mode & TDR_FUNC_STEP) == TDR_FUNC_STEP ) {
           for (int i = 1; i < 101; i++) {
               measured[ch][i][0] += measured[ch][i-1][0];
               measured[ch][i][1] += measured[ch][i-1][1];

nanovna.h

@@ -33,9 +33,6 @@ enum {
   TDR_IMPULSE, TDR_STEP
 };
 
-extern uint8_t domain;
-extern uint8_t tdrfunc;
-
 #define CAL_LOAD 0
 #define CAL_OPEN 1
 #define CAL_SHORT 2
@@ -61,6 +58,13 @@ extern uint8_t tdrfunc;
 #define ETERM_ET 3 /* error term transmission tracking */
 #define ETERM_EX 4 /* error term isolation */
 
+#define DOMAIN_MODE (1<<0)
+#define DOMAIN_FREQ (0<<0)
+#define DOMAIN_TIME (1<<0)
+#define TDR_FUNC (1<<1)
+#define TDR_FUNC_IMPULSE (0<<1)
+#define TDR_FUNC_STEP    (1<<1)
+
 void cal_collect(int type);
 void cal_done(void);
 
@@ -294,6 +298,7 @@ typedef struct {
   trace_t _trace[TRACES_MAX];
   marker_t _markers[4];
   int _active_marker;
+  uint8_t _domain_mode;
 
   int32_t checksum;
 } properties_t;
@@ -317,6 +322,7 @@ extern int8_t previous_marker;
 #define trace current_props._trace
 #define markers current_props._markers
 #define active_marker current_props._active_marker
+#define domain_mode current_props._domain_mode
 
 int caldata_save(int id);
 int caldata_recall(int id);

plot.c

@@ -1367,7 +1367,7 @@ cell_draw_marker_info(int m, int n, int w, int h)
   chsnprintf(buf, sizeof buf, "%d:", active_marker + 1);
   cell_drawstring_5x7(w, h, buf, xpos, ypos, 0xffff);
   xpos += 16;
-  if (domain == DOMAIN_FREQ) {
+  if ((domain_mode & DOMAIN_MODE) == DOMAIN_FREQ) {
       frequency_string(buf, sizeof buf, frequencies[idx]);
       cell_drawstring_5x7(w, h, buf, xpos, ypos, 0xffff);
   } else {

ui.c

@@ -669,13 +669,17 @@ menu_tdr_cb(int item)
 {
   switch (item) {
     case 0:
-      domain = (domain == DOMAIN_FREQ) ? DOMAIN_TIME : DOMAIN_FREQ;
+        if ((domain_mode & DOMAIN_MODE) == DOMAIN_TIME) {
+            domain_mode = (domain_mode & ~DOMAIN_MODE) | DOMAIN_FREQ;
+        } else {
+            domain_mode = (domain_mode & ~DOMAIN_MODE) | DOMAIN_TIME;
+        }
       break;
     case 1:
-      tdrfunc = TDR_IMPULSE;
+      domain_mode = (domain_mode & ~TDR_FUNC) | TDR_FUNC_IMPULSE;
       break;
     case 2:
-      tdrfunc = TDR_STEP;
+      domain_mode = (domain_mode & ~TDR_FUNC) | TDR_FUNC_STEP;
       break;
   }
 
@@ -1249,6 +1253,7 @@ menu_item_modify_attribute(const menuitem_t *menu, int item,
         || (item == 2 && (cal_status & CALSTAT_LOAD))
         || (item == 3 && (cal_status & CALSTAT_ISOLN))
         || (item == 4 && (cal_status & CALSTAT_THRU))) {
+      domain_mode = (domain_mode & ~DOMAIN_MODE) | DOMAIN_FREQ;
       *bg = 0x0000;
       *fg = 0xffff;
     }
@@ -1263,9 +1268,9 @@ menu_item_modify_attribute(const menuitem_t *menu, int item,
       *fg = 0xffff;
     }
   } else if (menu == menu_tdr) {
-      if ((item == 0 && domain == DOMAIN_TIME)
-       || (item == 1 && tdrfunc == TDR_IMPULSE)
-       || (item == 2 && tdrfunc == TDR_STEP)
+      if ((item == 0 && (domain_mode & DOMAIN_MODE) == DOMAIN_TIME)
+       || (item == 1 && (domain_mode & TDR_FUNC) == TDR_FUNC_IMPULSE)
+       || (item == 2 && (domain_mode & TDR_FUNC) == TDR_FUNC_STEP)
        ) {
         *bg = 0x0000;
         *fg = 0xffff;