armpicc2000
Joined: 30 Oct 2009
Posts: 1
Location: India
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 30 Oct 2009 11:59 plz help me with this code |
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hi frenz
I hav pasted a code below to display varying adc values in lcd....... but i cannot display the values.........plz help to debug the code
#if defined(__PCM__)
#include <16F877A.H>
#fuses NOWDT,NOPROTECT,NOLVP
#use delay(clock=6144000)
#use rs232(baud=9600,xmit=pin_c6,rcv=pin_c7)
#build (reset=0x200,interrupt=0x204)
#org 0x004,0x1ff
{}
#endif
#define rs PIN_E0
#define en PIN_E1
#define b1 0.014662756598240469208211143695015
#define adc pin_a1
//int i;
void lcd_init();
//void enable();
float f1;
char str1[20];
unsigned char *str;
//float f2=19.99;
//char bat1[6];
//char b2[6];
//void cname();
void bvolt();
void lcd_print(char *str1);
void lcd_write(unsigned char);
//void pvolt();
float adc_channel1();
unsigned int hi1,lo1;
unsigned int16 fin1;
float volt1;
#byte ADCON1 = 0x9f
#byte ADCON0 = 0x1f
#byte ADRESL = 0x9e
#byte ADRESH = 0x1e
#BYTE PIR1 = 0X0c
#byte PIE1 = 0x8C
#bit ADIF = 0x0C.6
void main()
{
//delay_ms(50);
lcd_init();
str=0x1A0;
//while(1)
{
// lcd(); // lcd config
// output_high(RS); // data mode
// cname();
//delay_ms(250);
// lcd();
// output_high(RS); // data mode
// pvolt();
//delay_ms(250);
//adc_channel1();
//output_high(RS); // data mode
bvolt();
//delay_ms(250);
}
}
/*void lcd()
{
output_low(RS); // command pin_e0 is set as low that is 0.
output_b(0x01); // clear screen
enable(); // pin_e1 is disabled and then enabled
output_b(0x02); // return to home
enable();
output_b(0x06); // increment cursor
enable();
output_b(0x0E); // cursor blinking
enable();
output_b(0x80); // lcd's 1st line
enable();
//output_b(0x3C); // 4 line lcd config
// enable();
}*/
/*void enable()
{
output_low(E);
delay_ms(100);
output_high(E);
}*/
/*void cname()
{
char cname[]="SAFE World";
for(i=0;cname[i]!='\0';i++)
{
delay_ms(500);
output_b(cname[i]);
enable();
}
} */
void bvolt()
{
strcpy(str,"BATT VOLT");
delay_ms(500);
lcd_print(str);
delay_ms(500);
f1=adc_channel1();
sprintf(str,"\f%f",f1);
delay_ms(500);
lcd_print(str);
delay_ms(500);
}
//char bvolt[]="BATT VOLT = ";
/* for(i=0;bvolt[i]!='\0';i++)
{
delay_ms(500);
output_b(bvolt[i]);
enable();
}
//f1=adc_channel1();
for(i=0;bat1[i]!='\0';i++)
{
delay_ms(500);
sprintf(bat1,"%f",f1);
delay_ms(500);
output_b(bat1[i]);
enable();
}
}*/
/*void pvolt()
{
char pvolt[]="PAN VOLT = ";
for(i=0;pvolt[i]!='\0';i++)
{
delay_ms(500);
output_b(pvolt[i]);
enable();
}
for(i=0;b2[i]!='\0';i++)
{
sprintf(b2,"%f",f2);
delay_ms(500);
output_b(b2[i]);
enable();
}
}*/
float adc_channel1()
{
ADCON0=0xCD;
ADCON1=0xC0;
PIE1=0x40;
PIR1=0x40;
delay_ms(50);
while(ADIF!=1);
{hi1 = ADRESH;
lo1 = ADRESL;}
ADIF=0;
//fin=(hi<< | lo;
fin1=make16(hi1,lo1);
//printf("\n\n10 bit value = %2x",fin);
//printf("\n\ndecimalvalue = %ld",fin);
volt1=(float)(fin1*b1);
//v1=volt/1000;
//v2=volt%1000;
printf("\n\n %f",volt1);
output_float(adc);
delay_ms(500);
return volt1;
}
void lcd_print(char *str1)
{
output_low(rs);
lcd_write(0x01);
output_high(rs);
while(*str1!=0)
{
lcd_write(*str1);
str1++;
}
}
void lcd_write(unsigned char a)
{
output_b(a);
output_high(en);
delay_ms(1);
output_low(en);
delay_ms(1);
}
void lcd_init(void)
{
output_low(rs);
//lcd_nibble_write(0x20);
lcd_write(0x01);
lcd_write(0x02);
lcd_write(0x06);
lcd_write(0x0e);
lcd_write(0x3c);
lcd_write(0x80);
output_high(rs);
}
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