feat: paramterize number of y-grid, revert to 8

main.c

@@ -706,10 +706,10 @@ properties_t current_props = {
   ._frequency1 =       900000000, // end = 900MHz
   ._sweep_points =     POINTS_COUNT,
   ._trace = {/*enable, type, channel, reserved, scale, refpos*/
-    { 1, TRC_LOGMAG, 0, 0, 10.0, 9.0 },
-    { 1, TRC_LOGMAG, 1, 0, 10.0, 9.0 },
-    { 1, TRC_SMITH,  0, 0, 1.0, 0.0 },
-    { 1, TRC_PHASE,  1, 0, 90.0, 5.0 }
+    { 1, TRC_LOGMAG, 0, 0, 10.0, NGRIDY-1 },
+    { 1, TRC_LOGMAG, 1, 0, 10.0, NGRIDY-1 },
+    { 1, TRC_SMITH,  0, 0, 1.0, 0 },
+    { 1, TRC_PHASE,  1, 0, 90.0, NGRIDY/2 }
   },
   ._markers = {
     { 1, 30, 0 }, { 0, 40, 0 }, { 0, 60, 0 }, { 0, 80, 0 }

nanovna.h

@@ -129,8 +129,6 @@ extern void tlv320aic3204_select(int channel);
 /*
  * plot.c
  */
-// GRIDX calculated depends from frequency span
-#define GRIDY 23
 
 // Offset of plot area
 #define OFFSETX 10
@@ -138,8 +136,19 @@ extern void tlv320aic3204_select(int channel);
 
 // WIDTH better be n*(POINTS_COUNT-1)
 #define WIDTH  300
-// HEIGHT = 10*GRIDY
-#define HEIGHT 230
+// HEIGHT = 8*GRIDY
+#define HEIGHT 232
+
+//#define NGRIDY 10
+#define NGRIDY 8
+
+#define FREQUENCIES_XPOS1 OFFSETX
+#define FREQUENCIES_XPOS2 200
+#define FREQUENCIES_YPOS  (HEIGHT+1)
+
+// GRIDX calculated depends from frequency span
+//#define GRIDY 29
+#define GRIDY (HEIGHT / NGRIDY)
 
 //
 #define CELLOFFSETX 5

plot.c

@@ -508,7 +508,7 @@ trace_into_index(int t, int i, float array[POINTS_COUNT][2])
   int y, x;
 
   float *coeff = array[i];
-  float refpos = 10 - get_trace_refpos(t);
+  float refpos = NGRIDY - get_trace_refpos(t);
   float v = refpos;
   float scale = 1 / get_trace_scale(t);
   switch (trace[t].type) {
@@ -546,7 +546,7 @@ trace_into_index(int t, int i, float array[POINTS_COUNT][2])
     goto set_index;
   }
   if (v <  0) v = 0;
-  if (v > 10) v = 10;
+  if (v > NGRIDY) v = NGRIDY;
   x = (i * (WIDTH) + (sweep_points-1)/2) / (sweep_points-1) + CELLOFFSETX;
   y = floatToInt(v * GRIDY);
 set_index:
@@ -1367,7 +1367,7 @@ draw_cell(int m, int n)
       continue;
     int x = 0 - x0 + CELLOFFSETX - REFERENCE_X_OFFSET;
     if (x+REFERENCE_WIDTH>=0 && x-REFERENCE_WIDTH<w){
-      int y = 10*GRIDY - floatToInt((get_trace_refpos(t) * GRIDY)) - y0 - REFERENCE_Y_OFFSET;
+      int y = HEIGHT - floatToInt((get_trace_refpos(t) * GRIDY)) - y0 - REFERENCE_Y_OFFSET;
       if (y+REFERENCE_HEIGHT>=0 && y-REFERENCE_HEIGHT<h)
         draw_refpos(w, h, x, y, config.trace_color[t]);
     }
@@ -1632,8 +1632,8 @@ draw_frequencies(void)
 	buf1[0] = S_SARROW[0];
   if (uistat.lever_mode == LM_SPAN)
 	buf2[0] = S_SARROW[0];
-  ili9341_drawstring(buf1, OFFSETX, 232);
-  ili9341_drawstring(buf2, 200, 232);
+  ili9341_drawstring(buf1, FREQUENCIES_XPOS1, FREQUENCIES_YPOS);
+  ili9341_drawstring(buf2, FREQUENCIES_XPOS2, FREQUENCIES_YPOS);
 }
 
 void

ui.c

@@ -2258,6 +2258,7 @@ static const GPTConfig gpt3cfg = {
   0
 };
 
+#if 0
 static void
 test_touch(int *x, int *y)
 {
@@ -2268,6 +2269,7 @@ test_touch(int *x, int *y)
 
   touch_start_watchdog();
 }
+#endif
 
 void
 handle_touch_interrupt(void)