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deepakomanna
Joined: 06 Mar 2007
Posts: 92
Location: Pune,India
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| problem to display decimal point |
 Posted: Sat May 12, 2007 4:32 am |
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Dear Sir,
i am using 16f913, MPLAB 7.5 Ver. & CCS PCM C Compiler, Version 3.249, 34534.
here i want to display 0.0 digits on a glass lcd display.
initially i display 00,then i am trying to disply 0.0,
the right most digit will not displaying.displying 0. only.
here is my short code.
| Code: |
#include<16F913.h>
#fuses INTRC_IO,NOWDT,PUT,/*****/MCLR,PROTECT,NOCPD,NOBROWNOUT,NOPROTECT,NOIESO,NOFCMEN
#use delay(clock=8000000)
// A B C D E F G DP
// b7 b b5 b4 b3 b2 b1 b0
#define DIGIT1 COM3+6, COM2+6, COM0+6, COM1+6, COM0+5, COM3+5, COM2+5, COM1+5 // DISPALYS 0 FROM RIGHT SIDE
#define DIGIT2 COM3+7, COM2+7, COM0+7, COM1+7, COM0+4, COM3+4, COM2+4 // DISPALYS 1 FROM RIGHT SIDE
#define DIGIT3 COM3+8, COM2+8, COM0+8, COM1+8, COM0+3, COM3+3, COM2+3 // DISPALYS FROM RIGHT SIDE
#define DIGIT4 COM3+9, COM2+9, COM0+9, COM1+9, COM0+2, COM3+2, COM2+2 // DISPALYS FROM RIGHT SIDE
#define DIGIT5 COM3+11, COM2+11, COM0+11, COM1+11, COM0+1, COM3+1, COM2+1 // DISPALYS FROM RIGHT SIDE
#define DIGIT6 COM3+12, COM2+12, COM0+12, COM1+12, COM0+0, COM3+0, COM2+0 // DISPALYS FROM RIGHT SIDE
#define VLCD_ENABLE 0x10
#define BLANK 0
byte const Digit_Map[10] = {0xFC,0x60,0xDA,0xF2,0x66,0xB6,0xBE,0xE0,0xFE,0xF6};
int8 i;
void init_CPU();
void lcd_putc(int);
int8 lcd_pos ;
byte segments;
void main()
{
int number ;
init_CPU();
number = 0;
i = 0;
lcd_pos = 1;
while(TRUE)
{
lcd_putc(number);
if(number++== 9)
{
number = 0;
}
delay_ms(1000);
}
}
void lcd_putc(int c)
{
if((c>=0)&&(c <= 9))
{
segments=Digit_Map[c];
}
switch(lcd_pos)
{
case 1:
LCD_SYMBOL(segments,DIGIT1);
LCD_SYMBOL(0x01,DIGIT1);
LCD_SYMBOL(Digit_Map[i],DIGIT2);
if(segments == Digit_Map[9])
{
segments = Digit_Map[0];
i++;
if(i == 10 )
i = 0;
}
else
lcd_pos = 1;
break;
}
}
void init_CPU()
{
/************** PORT SETTINGS ****************/
PORT_B_PULLUPS(0XC0);
SET_TRIS_A(0X80);
SET_TRIS_B(0XC0);
SET_TRIS_C(0X27);
SET_TRIS_E(0X08);
SETUP_COMPARATOR(NC_NC_NC_NC);
SETUP_LCD( LCD_MUX14 | LCD_INTRC |VLCD_ENABLE , 2);
segments=BLANK;
lcd_symbol(segments,DIGIT6);
lcd_symbol(segments,DIGIT5);
lcd_symbol(segments,DIGIT4);
lcd_symbol(segments,DIGIT3);
lcd_symbol(segments,DIGIT2);
lcd_symbol(segments,DIGIT1);
}
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_________________
Thank You,
With Best Regards,
Deepak. |
|
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MarcosAmbrose
Joined: 25 Sep 2006
Posts: 38
Location: Adelaide, Australia
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| Re: problem to display decimal point |
| Posted: Sun May 13, 2007 12:56 am |
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Well since number is an int there's not a lot to be gained by displaying as an decimal point, but if you want to display a decimal 0 you can format your output with a printf
| Code: |
printf(lcd_putc,"%d.0",number);
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| deepakomanna wrote: | Dear Sir,
i am using 16f913, MPLAB 7.5 Ver. & CCS PCM C Compiler, Version 3.249, 34534.
here i want to display 0.0 digits on a glass lcd display.
initially i display 00,then i am trying to disply 0.0,
the right most digit will not displaying.displying 0. only.
here is my short code.
|
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deepakomanna
Joined: 06 Mar 2007
Posts: 92
Location: Pune,India
|
| problem to display decimal point |
| Posted: Sun May 13, 2007 9:26 pm |
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|
but sir, here i am incrementing right most digit i.e. .0 from 0-9. and the decimal point i have to blink in every sec.
Further to display the decimal point i made change in code is
| Code: | | byte const Digit_Map[11] = {0xFD,0x61,0xDB,0xF3,0x67,0xB7,0xBF,0xE1,0xFF,0xF7,0x00}; |
plz reply soon
_________________
Thank You,
With Best Regards,
Deepak. |
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Ttelmah
Guest
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| Posted: Mon May 14, 2007 2:25 am |
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First comment, the 'best' way to us an integer, is to use the %w format.
If you use:
| Code: |
int16 val;
val=123;
printf(lcd_putc,"%4.1w",val);
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The compiler will output the integer value '123', as "12.3". You can increment/decrement the integer as you want, without problems...
Now, the reason for the large 'silence', is that your code is written in a way that makes it very hard to follow what you are doing, and how you are trying to do it. Learn to use comments, and lay things out in a logical way. Keep lcd_putc, so that it handles a single character, as in the example, ex92lcd.c. All you need 'add' to the lcd_putc function, is in the line, where it puts 'segments=blank', if the value arriving is not a digit, you simply set 'segments=', and the value neded to drive the DP. Then if you send a value to it with %w, it should work.
Best Wishes |
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