Fix lever button work

Remove double usage

main.c

@@ -129,7 +129,7 @@ static float kaiser_data[FFT_SIZE];
 #endif
 
 #undef VERSION
-#define VERSION "1.0.63"
+#define VERSION "1.0.64"
 
 // Version text, displayed in Config->Version menu, also send by info command
 const char *info_about[]={
@@ -549,14 +549,15 @@ VNA_SHELL_FUNCTION(cmd_reset)
 {
   (void)argc;
   (void)argv;
-
+#ifdef __DFU_SOFTWARE_MODE__
   if (argc == 1) {
     if (get_str_index(argv[0], "dfu") == 0) {
       shell_printf("Performing reset to DFU mode\r\n");
       enter_dfu();
       return;
     }
   }
+#endif
   shell_printf("Performing reset\r\n");
 
   rccEnableWWDG(FALSE);
@@ -622,14 +623,14 @@ my_atof(const char *p)
     neg = TRUE;
   if (*p == '-' || *p == '+')
     p++;
-  double x = my_atoi(p);
+  float x = my_atoi(p);
   while (_isdigit((int)*p))
     p++;
   if (*p == '.') {
-    double d = 1.0f;
+    float d = 1.0f;
     p++;
     while (_isdigit((int)*p)) {
-      d /= 10;
+      d /= 10.0f;
       x += d * (*p - '0');
       p++;
     }

ui.c

@@ -531,12 +531,11 @@ show_version(void)
   }
 }
 
+#ifdef __DFU_SOFTWARE_MODE__
 void
 enter_dfu(void)
 {
-#ifdef __DFU_SOFTWARE_MODE__
   touch_stop_watchdog();
-
   int x = 5, y = 20;
   lcd_set_foreground(LCD_FG_COLOR);
   lcd_set_background(LCD_BG_COLOR);
@@ -547,8 +546,8 @@ enter_dfu(void)
   // see __early_init in ./NANOVNA_STM32_F072/board.c
   *((unsigned long *)BOOT_FROM_SYTEM_MEMORY_MAGIC_ADDRESS) = BOOT_FROM_SYTEM_MEMORY_MAGIC;
   NVIC_SystemReset();
-#endif
 }
+#endif
 
 static bool
 select_lever_mode(int mode)
@@ -2721,7 +2720,7 @@ normal_apply_touch(int touch_x, int touch_y){
 static void
 ui_process_lever(void)
 {
-  last_button = 0;
+//  last_button = 0;
   uint16_t status = btn_check();
   if (status == 0) return;
   switch (ui_mode) {