Rewrite progress bar update/remove dead code/use buffering in cmd_scanraw

cmd_vbat now run in sweep thread

main.c

@@ -2069,7 +2069,7 @@ static const VNAShellCommand commands[] =
     {"touch"       , cmd_touch       , 0},
     {"release"     , cmd_release     , 0},
 #endif
-    {"vbat"        , cmd_vbat        , 0},     // Uses same adc as touch!!!!!
+    {"vbat"        , cmd_vbat        , CMD_WAIT_MUTEX},     // Uses same adc as touch!!!!!
 #ifdef ENABLE_VBAT_OFFSET_COMMAND
     {"vbat_offset" , cmd_vbat_offset , CMD_RUN_IN_LOAD},
 #endif
@@ -2415,10 +2415,9 @@ static void VNAShell_executeLine(char *line)
       shell_function = scp->sc_function;
       operation_requested|=OP_CONSOLE;      // this will abort current sweep to give priority to the new request
       // Wait execute command in sweep thread
+      do {
         osalThreadEnqueueTimeoutS(&shell_thread, TIME_INFINITE);
-//      do {
-//        osalThreadSleepMilliseconds(10);
-//      } while (shell_function);
+      } while (shell_function);
     } else {
       operation_requested = false; // otherwise commands  will be aborted
       scp->sc_function(shell_nargs - 1, &shell_args[1]);

sa_cmd.c

@@ -1245,37 +1245,39 @@ VNA_SHELL_FUNCTION(cmd_scanraw)
   float f_step = (stop-start)/ points;
   setting.frequency_step = (freq_t)f_step;
 
-  streamPut(shell_stream, '{');
-  static freq_t old_start=0, old_stop=0;
-  static uint32_t old_points=0;
-  if (old_start != start || old_stop != stop || old_points != points) {     // To prevent dirty for every sweep
-    dirty = true;
-    old_start = start;
-    old_stop = stop;
-    old_points = points;
-  }
   operation_requested = false;
   dirty = true;
-
+//  adc_stop_analog_watchdog();
+  int oldpos = 0;
+  ili9341_set_background(LCD_BG_COLOR);
+  ili9341_fill(OFFSETX, CHART_BOTTOM+1, WIDTH, 1);
+  ili9341_set_background(LCD_SWEEP_LINE_COLOR);
+#define BUFFER_SIZE  64
+  uint8_t buf[BUFFER_SIZE];
+  int idx = 0;
+  buf[idx++] = '{';
   for (uint32_t i = 0; i < points; i++) {
     int val = perform(false, i, start +(freq_t)(f_step * i), false) + float_TO_PURE_RSSI(config.ext_zero_level);
     if (operation_requested || SDU1.config->usbp->state != USB_ACTIVE) // break on operation in perform
       break;
-    streamPut(shell_stream, 'x');
-    streamPut(shell_stream, (uint8_t)(val & 0xFF));
-    streamPut(shell_stream, (uint8_t)((val>>8) & 0xFF));
-    if ((i & 0x07) == 0) {  // if required
+    buf[idx++] = 'x';
+    buf[idx++] = (uint8_t)(val & 0xFF);
+    buf[idx++] = (uint8_t)((val>>8) & 0xFF);
+    if (idx >= BUFFER_SIZE - 4) {
+      streamWrite(shell_stream, buf, idx);
+      idx = 0;
+    }
     int pos = i * (WIDTH+1) / points;
-      ili9341_set_background(LCD_SWEEP_LINE_COLOR);
-      ili9341_fill(OFFSETX, CHART_BOTTOM+1, pos, 1);     // update sweep progress bar
-      ili9341_set_background(LCD_BG_COLOR);
-      ili9341_fill(OFFSETX+pos, CHART_BOTTOM+1, WIDTH-pos, 1);
+    if (pos - oldpos > 8) {
+      ili9341_fill(OFFSETX + oldpos, CHART_BOTTOM+1, pos - oldpos, 1);     // update sweep progress bar
+      oldpos = pos;
     }
-
   }
+  buf[idx++] = '}';
+  streamWrite(shell_stream, buf, idx);
+//  adc_start_analog_watchdog();
   ili9341_set_background(LCD_BG_COLOR);
   ili9341_fill(OFFSETX, CHART_BOTTOM+1, WIDTH, 1);
-  streamPut(shell_stream, '}');
   setting.frequency_step = old_step;
   dirty = true;
   redraw_request = 0; // disable screen update in this mode