interfacing 7 segment display with HCS12E128 microcontroller
i am connecting 8 pieces of 7 segment displays with a microcontroller, the text "CALEDONI" is displayed but its stand still.. i need to know how to make it flash? the source code which is compiled by the CodeWarrior software is written below..
thank u ^.^
#pragma LINK_INFO DERIVATIVE "SampleS12"
void initPort(void);
void initPort(void) {
DDRA=0xFF;
DDRB=0xFF;
}
void delay(unsigned int);
void delay(unsigned int x) {
int y;
while(x>0){
for(y=0;y<200;y++) {;}
x--;
}
}
void main(void) {
char alpha[]={0x08,0x03,0x46,0x21,0x06,0x0E,0x10,0x09,0x79,0x71,0x7F,
0x47,0x7F,0x2B,0x40,0x0C,0x7F,0x0F,0x12,0x07,0x41,0x7F,0x7F,0x7F,0x11,0x7F};
char segment[]={
0xFE,0xFD,0xFB,0xF7,0xEF,0xDF,0xBF,0x7F
};
char size;
unsigned char x;
unsigned int disp;
char name[]="CALEDONI";
initPort();
EnableInterrupts;
for(;😉 {
for(size=0;name[size+7]!='\0';size++){
for(disp=0;disp<75;disp++){
for(x=0;x<8;x++){
PORTA = alpha[name[size+x]-65];
PORTB = segment[x];
delay(5);
PORTB = 0xFF;
delay(0);
}
}
}
}
}
thank u ^.^
#pragma LINK_INFO DERIVATIVE "SampleS12"
void initPort(void);
void initPort(void) {
DDRA=0xFF;
DDRB=0xFF;
}
void delay(unsigned int);
void delay(unsigned int x) {
int y;
while(x>0){
for(y=0;y<200;y++) {;}
x--;
}
}
void main(void) {
char alpha[]={0x08,0x03,0x46,0x21,0x06,0x0E,0x10,0x09,0x79,0x71,0x7F,
0x47,0x7F,0x2B,0x40,0x0C,0x7F,0x0F,0x12,0x07,0x41,0x7F,0x7F,0x7F,0x11,0x7F};
char segment[]={
0xFE,0xFD,0xFB,0xF7,0xEF,0xDF,0xBF,0x7F
};
char size;
unsigned char x;
unsigned int disp;
char name[]="CALEDONI";
initPort();
EnableInterrupts;
for(;😉 {
for(size=0;name[size+7]!='\0';size++){
for(disp=0;disp<75;disp++){
for(x=0;x<8;x++){
PORTA = alpha[name[size+x]-65];
PORTB = segment[x];
delay(5);
PORTB = 0xFF;
delay(0);
}
}
}
}
}
Replies
-
Harshad ItaliyaYou want to Blink Text on Display or Want to Flash letter one by one?
If you want to blink whole word then simply Turn off once you send all the character data to segment. You are using any shift register IC to Display or you have connected all 64 Pins with segment? -
suga_babeyeah i want the whole text to blink.. they are connected directly
any idea where i can get a C program for this? -
Harshad ItaliyaFirst tell me one thing. The code you posted is working or not? I mean by this code you are able to get steady Text on Segment or not?
-
suga_babeyes it is working.. up to here the text is only stand still
-
Harshad Italiya
or(;😉 {
Now after delay(0) Send 0x00 or 0xFF to all your segments depending on your segment display Common Anode or Common Cathode. then keep same data for little time say one second after that send the data again from your array consisting your texts.
for(size=0;name[size+7]!='\0';size++){
for(disp=0;disp<75;disp++){
for(x=0;x<8;x++){
PORTA = alpha[name[size+x]-65];
PORTB = segment[x];
delay(5);
PORTB = 0xFF;
delay(0);
}
get the point or not? -
suga_babeumm.. i didnt really get the idea :s
i tried different ways but still i didnt get the result.. i should probably mention i am not an expert when comes to C
thanking you all for any help provided -
Harshad Italiya
Let me know if you still want to give it a try we can work on this. Don't give up.suga_babeumm.. i didnt really get the idea :s
i tried different ways but still i didnt get the result.. i should probably mention i am not an expert when comes to C
thanking you all for any help provided -
suga_babei am not giving up at all.. i am looking forward to getting more suggestions
-
Harshad Italiya
Is it possible to post the circuit diagram So i can simulate it here at my side.suga_babei am not giving up at all.. i am looking forward to getting more suggestions
You are reading an archived discussion.
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