saramah
Member level 3
I want to make a RTC clock with 4-digit 7seg disp which will display " HH:MM " in multiplex tech.
I have 4 nos digit and each are of CA type. As the each single-digit has one DP and which is located on right side of the digit.
As of " HH. " (H-ten, H-one , .Single Dot) is Ok and I have no problems, But to get one more Dot on upper portion to form remaining " :MM ", I nedd to invert M-ten.
Sample COUNTER code is here, and tested the digit(SEGMENTS AND CA are connected to ULN Driver IC).
My question is,
should i declare ONE MORE ARRAY with appropriate elements(namely, revese_seg[]) like above //seg[] and load it to PORTD only for this digit..
Is that correct process?
Or can be done something else from Hardware side by changing wire connection of segments for this digit other that software site ?
Tnx
I have 4 nos digit and each are of CA type. As the each single-digit has one DP and which is located on right side of the digit.
As of " HH. " (H-ten, H-one , .Single Dot) is Ok and I have no problems, But to get one more Dot on upper portion to form remaining " :MM ", I nedd to invert M-ten.
Sample COUNTER code is here, and tested the digit(SEGMENTS AND CA are connected to ULN Driver IC).
Code:
#include <xc.h>
//***Define the signal pins of all four displays***//
#define s1 RC0
#define s2 RC1
#define s3 RC2
#define s4 RC3
//***End of definition**////
void main()
{
unsigned int a,b,c,d,e,f,g,h; //just variables
int i = 0; //the 4-digit value that is to be displayed
int flag =0; //for creating delay
unsigned int seg[]={0X3F, //Hex value to display the number 0
0X06, //Hex value to display the number 1
0X5B, //Hex value to display the number 2
0X4F, //Hex value to display the number 3
0X66, //Hex value to display the number 4
0X6D, //Hex value to display the number 5
0X7D, //Hex value to display the number 6
0X07, //Hex value to display the number 7
0X7F, //Hex value to display the number 8
0X6F //Hex value to display the number 9
}; //End of Array for displaying numbers from 0 to 9/// FOR CC// FOR CA WITH ULN
//*****I/O Configuration****//
TRISC=0X00;
TRISD=0x00;
PORTC=0X00;
//***End of I/O configuration**///
#define _XTAL_FREQ 20000000
while(1)
{
//***Splitting "i" into four digits***//
a=i%10;//4th digit is saved here
b=i/10;
c=b%10;//3rd digit is saved here
d=b/10;
e=d%10; //2nd digit is saved here
f=d/10;
g=f%10; //1st digit is saved here
h=f/10;
//***End of splitting***//
PORTD=seg[g];s1=1; //Turn ON 'H-ten'
__delay_ms(5);s1=0; //Turn OFF
PORTD=seg[e];s2=1; //Turn ON 'H-one'
__delay_ms(5);s2=0; //Turn OFF
PORTD=seg[c];s3=1; //Turn ON 'M-ten' >> This digit want to inverse to get the DP upper left side>>
__delay_ms(5);s3=0; //Turn OFF
PORTD=seg[a];s4=1; //Turn ON 'M-one'
__delay_ms(5);s4=0; //Turn OFF
if(flag>=10)
{
i++;flag=0;
}
flag++;
}
}My question is,
should i declare ONE MORE ARRAY with appropriate elements(namely, revese_seg[]) like above //seg[] and load it to PORTD only for this digit..
Code:
PORTD=reverse_seg[c];s3=1; //Turn ON 'M-ten'Or can be done something else from Hardware side by changing wire connection of segments for this digit other that software site ?
Tnx
