Small code fixes

adc.c

@@ -140,7 +140,7 @@ void adc_stop(void)
   }
 }
 
-void adc_interrupt(void)
+static void adc_interrupt(void)
 {
   uint32_t isr = VNA_ADC->ISR;
   VNA_ADC->ISR = isr;

nanovna.h

@@ -433,8 +433,6 @@ void ili9341_drawstring_size(const char *str, int x, int y, uint8_t size);
 void ili9341_drawfont(uint8_t ch, int x, int y);
 void ili9341_read_memory(int x, int y, int w, int h, int len, uint16_t* out);
 void ili9341_line(int x0, int y0, int x1, int y1);
-void show_version(void);
-void show_logo(void);
 
 // SD Card support, discio functions for FatFS lib implemented in ili9341.c
 #ifdef  __USE_SD_CARD__
@@ -565,7 +563,6 @@ void ui_show(void);
 void ui_hide(void);
 
 void touch_start_watchdog(void);
-void touch_position(int *x, int *y);
 void handle_touch_interrupt(void);
 
 #define TOUCH_THRESHOLD 2000

ui.c

@@ -163,7 +163,7 @@ static void leave_ui_mode(void);
 static void erase_menu_buttons(void);
 static void ui_process_keypad(void);
 static void ui_process_numeric(void);
-
+static void touch_position(int *x, int *y);
 static void menu_move_back(bool leave_ui);
 static void menu_push_submenu(const menuitem_t *submenu);
 
@@ -419,18 +419,18 @@ touch_draw_test(void)
 }
 
 
-void
+static void
 touch_position(int *x, int *y)
 {
   *x = (last_touch_x - config.touch_cal[0]) * 16 / config.touch_cal[2];
   *y = (last_touch_y - config.touch_cal[1]) * 16 / config.touch_cal[3];
 }
 
-void
+static void
 show_version(void)
 {
   int x = 5, y = 5, i = 1;
-  adc_stop();
+//  adc_stop();
   ili9341_set_foreground(DEFAULT_FG_COLOR);
   ili9341_set_background(DEFAULT_BG_COLOR);
 
@@ -471,7 +471,7 @@ show_version(void)
 //    ili9341_drawstring(buffer, x, y + FONT_STR_HEIGHT + 2);
   }
 
-  touch_start_watchdog();
+//  touch_start_watchdog();
 }
 
 void
@@ -1741,7 +1741,7 @@ ui_mode_keypad(int _keypad_mode)
 
   ui_mode = UI_KEYPAD;
   area_width = AREA_WIDTH_NORMAL - MENU_BUTTON_WIDTH;
-  area_height = HEIGHT - 32;
+  area_height = LCD_HEIGHT-NUM_INPUT_HEIGHT;
   draw_menu();
   draw_keypad();
   draw_numeric_area_frame();