Distance display

1#include <LCDWIKI_GUI.h> //Core graphics library
2#include <LCDWIKI_KBV.h>  //Hardware-specific library
3
4LCDWIKI_KBV my_lcd(ILI9486,A3,A2,A1,A0,A4); //model,cs,cd,wr,rd,al  pin
5
6//param calibration from kbv
7#define TS_MINX 906
8#define TS_MAXX  116
9
10#define TS_MINY 92 
11#define TS_MAXY 952
12
13float duration, distance;
14
15#define  BLACK        0x0000  
16#define BLUE         0x001F  
17#define RED          0xF800  
18#define GREEN        0x07E0  
19#define CYAN         0x07FF  
20#define  MAGENTA      0xF81F  
21#define YELLOW       0xFFE0  
22#define WHITE        0xFFFF  
23#define NAVY         0x000F  
24#define DARKGREEN    0x03E0  
25#define  DARKCYAN     0x03EF  
26#define MAROON       0x7800  
27#define PURPLE       0x780F  
28#define OLIVE        0x7BE0  
29#define LIGHTGREY    0xC618  
30#define  DARKGREY     0x7BEF  
31#define ORANGE       0xFD20  
32#define GREENYELLOW  0xAFE5  
33#define PINK         0xF81F  
34
35
36String mydistance;
37const char  echo = 39;
38const char trig = 41;
39
40void setup() {
41  my_lcd.Set_Rotation(2);
42   Serial.begin(9600);
43   my_lcd.Init_LCD();
44    my_lcd.Set_Text_Mode(1);
45
46  pinMode(echo, INPUT);
47  pinMode(trig, OUTPUT);
48
49
50}
51
52void loop()  {
53  digitalWrite(trig, LOW);
54  delayMicroseconds(2);
55  digitalWrite(trig,  HIGH);
56  delayMicroseconds(10);
57  digitalWrite(trig, LOW);
58
59  duration  = pulseIn(echo, HIGH);
60  distance = (duration*.0343)/2;
61
62mydistance = String(distance);
63my_lcd.Fill_Screen(BLACK);
64my_lcd.Set_Text_colour(GREEN);
65     my_lcd.Set_Text_Size(3);
66    my_lcd.Set_Draw_color(CYAN);
67    my_lcd.Fill_Circle(155,240,distance);
68  my_lcd.Print_String(mydistance,110,240);
69   my_lcd.Print_String("cm",200,240);  
70}
71