1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
| // LCD module connections
sbit LCD_RS at RB5_bit;
sbit LCD_EN at RB7_bit;
sbit LCD_D4 at RC4_bit;
sbit LCD_D5 at RC5_bit;
sbit LCD_D6 at RC6_bit;
sbit LCD_D7 at RC7_bit;
sbit LCD_RS_Direction at TRISB5_bit;
sbit LCD_EN_Direction at TRISB7_bit;
sbit LCD_D4_Direction at TRISC4_bit;
sbit LCD_D5_Direction at TRISC5_bit;
sbit LCD_D6_Direction at TRISC6_bit;
sbit LCD_D7_Direction at TRISC7_bit;
// End LCD module connections
char look(int a)
{
switch(a)
{
case 0:
return '0';
case 1:
return '1';
case 2:
return '2';
case 3:
return '3';
case 4:
return '4';
case 5:
return '5';
case 6:
return '6';
case 7:
return '7';
case 8:
return '8';
case 9:
return '9';
default:
return '.';
}
}
void main()
{
unsigned int v,vp,ip,i;
char *volt = "00.0";
char *current = "0.00";
CMCON = 0x07;
TRISA = 0xFF;
ADCON1 = 0x00;
Lcd_Init();
Lcd_Cmd(_LCD_CLEAR);
Lcd_Cmd(_LCD_CURSOR_OFF);
do
{
v = ADC_Read(2);
i = ADC_Read(3);
i = (i*4.89)/0.47;
v = ((v*4.89)/20)*120;
if(v!=vp || i!=ip )
Lcd_Cmd(_LCD_CLEAR);
vp = v;
ip = i;
volt[0] = look(v/10000);
volt[1] = look((v/1000)%10);
volt[3] = look((v/100)%10);
Lcd_Out(1,1,"Voltage = ");
Lcd_Out(1,11,volt);
Lcd_Out(1,16,"V");
current[0] = look(i/1000);
current[2] = look((i/100)%10);
current[3] = look((i/10)%10);
Lcd_Out(2,1,"Current = ");
Lcd_Out(2,11,current);
Lcd_Out(2,16,"A");
Delay_ms(250);
} while(1);
} |