Sajjadkhan
Full Member level 5
- Joined
- Sep 25, 2010
- Messages
- 307
- Helped
- 17
- Reputation
- 34
- Reaction score
- 16
- Trophy points
- 1,298
- Location
- Rawalpindi,Pakistan
- Activity points
- 4,199
I have 8 segment displays, left four of them would be representing voltage and right four would be displaying current. i have made a prototype board to check it. there are two values i.e. current and voltage but all displays are multiplexed togeather. now i want to interface a rotary encoder and when i push a button then a digit starts to blink and by turning the encoder you can set it as in power supplies. for now my concern is how to blink a selected digit?
One way to do it by using timer, but i am not sure, i want to know the optimal technique for doing it. thanks.
I am handling two digits at the same time as it would be more efficient.
One way to do it by using timer, but i am not sure, i want to know the optimal technique for doing it. thanks.
I am handling two digits at the same time as it would be more efficient.
Code:
sbit SEGA at RC7_BIT;
sbit SEGB at RC6_BIT;
sbit SEGC at RC5_BIT;
sbit SEGD at RC4_BIT;
sbit SEGE at RD3_BIT;
sbit SEGF at RD4_BIT;
sbit SEGG at RD5_BIT;
sbit DP at RD2_BIT;
sbit D1 at RB5_BIT;
sbit D2 at RB4_BIT;
sbit D3 at RB3_BIT;
sbit D4 at RB2_BIT;
sbit D5 at RB1_BIT;
sbit D6 at RB0_BIT;
sbit D7 at RD7_BIT;
sbit D8 at RD6_BIT;
void zero();
void one();
void two();
void three();
void four();
void five();
void six();
void seven();
void eight();
void nine();
void Dig1();
void Dig2();
void Dig3();
void Dig4();
void main() {
TRISB = 0;
TRISC = 0;
TRISD = 0;
while(1)
{
one();
Dig4();
Dig1();
Dig2();
Dig3();
}
}
void zero()
{
SEGA = SEGB = SEGC = SEGD = SEGE = SEGF = 1;
SEGG = 0;
}
void one()
{
SEGA = SEGD = SEGE = SEGF = SEGG =0;
SEGB = SEGC = 1;
}
void two()
{
SEGA = SEGB = SEGD = SEGE = SEGG =1;
SEGC = SEGF = 0;
}
void three()
{
SEGA = SEGB = SEGC = SEGD = SEGG = 1;
SEGE = SEGF =0;
}
void four()
{
SEGB = SEGC = SEGF = SEGG = 1;
SEGA = SEGD = SEGE = 0;
}
void five()
{
SEGA = SEGC = SEGD = SEGF = SEGG = 1;
SEGB = SEGE = 0;
}
void six()
{
SEGA = SEGC = SEGD = SEGE = SEGF = SEGG = 1;
SEGB = 0;
}
void seven()
{
SEGA = SEGB = SEGC = 1;
SEGD = SEGE = SEGF = SEGG = 0;
}
void eight()
{
SEGA = SEGB = SEGC = SEGD = SEGE = SEGF = SEGG =1;
}
void nine()
{
SEGA = SEGB = SEGC = SEGD = SEGF = SEGG = 1;
SEGE = 0;
}
void Dig4()
{
D1 = D5 = 1;
D2 = D6 = 0;
D3 = D7 = 0;
D4 = D8 = 0;
}
void Dig3()
{
D1 = D5 = 0;
D2 = D6 = 1;
D3 = D7 = 0;
D4 = D8 = 0;
}
void Dig2()
{
D1 = D5 = 0;
D2 = D6 = 0;
D3 = D7 = 1;
D4 = D8 = 0;
}
void Dig1()
{
D1 = D5 = 0;
D2 = D6 = 0;
D3 = D7 = 0;
D4 = D8 = 1;
}
