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The Puma
Joined: 23 Apr 2004
Posts: 227
Location: The Netherlands
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| Code how to drive 40-Segment LED Bar Display Board |
 Posted: Thu Sep 13, 2007 2:37 pm |
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Can someone help me to drive this board (see link below)
Is it possible to drive it with SPI commands?
Please give me a simple example
Lets say the first led on the second led bar must lit
http://www.sure-electronics.net/mcu,display/DE-DP011.pdf
Last edited by The Puma on Sun Sep 16, 2007 4:06 am; edited 1 time in total |
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kevcon
Joined: 21 Feb 2007
Posts: 142
Location: Michigan, USA
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| Posted: Thu Sep 13, 2007 2:51 pm |
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Dude,
there is PIC code right in the datasheet what more do you need? |
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The Puma
Joined: 23 Apr 2004
Posts: 227
Location: The Netherlands
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| Posted: Thu Sep 13, 2007 3:21 pm |
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What must i change to use it with CCS-C
| Quote: | void SEG_Shift3(void)
{
unsigned char i;
position++;
for(i = 0;i < (40-position); i++)
{
DATA = 1;
CLK = 0;
CLK = 1;
}
for(i = 0;i < position; i++)
{
DATA = 0;
CLK = 0;
CLK = 1;
}
if(position>40)position=0;
[/code] |
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inservi
Joined: 13 May 2007
Posts: 128
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| Posted: Fri Sep 14, 2007 3:35 am |
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Hello,
here is just an example, there are some other way to adapting.
| Code: |
#define Fuc_key PIN_B3
#define DIMM PIN_B2
#define CLKpin PIN_B1
#define DATApin PIN_B0
int position ;
void SEG_Shift3(void) {
unsigned char i;
position++;
for(i = 0;i < (40-position); i++) {
output_high(DATA) ;
output_low(CLK);
output_high(CLK);
}
for(i = 0;i < position; i++) {
output_low(DATA) ;
output_low(CLK);
output_high(CLK);
}
if(position>40)position=0;
}
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An other way:
| Code: |
#define Fuc_key PIN_B3
#define DIMM PIN_B2
#define CLKpin PIN_B1
#define DATApin PIN_B0
#define DATA(x) output_bit(DATApin, x)
#define CLK(x) output_bit(CLKpin, x)
int position ;
void SEG_Shift3(void) {
unsigned char i;
position++;
for(i = 0;i < (40-position); i++) {
DATA(1) ;
CLK(0);
CLK(1);
}
for(i = 0;i < position; i++) {
DATA(0) ;
CLK(0);
CLK(1);
}
if(position>40)position=0;
} |
dro.
_________________
in médio virtus |
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The Puma
Joined: 23 Apr 2004
Posts: 227
Location: The Netherlands
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| Posted: Fri Sep 14, 2007 6:48 am |
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| Ok, thx i will play with it |
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The Puma
Joined: 23 Apr 2004
Posts: 227
Location: The Netherlands
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| Posted: Sat Sep 15, 2007 2:08 pm |
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Ok, i have it working
This lit up the leds from right to left
then it clears the leds
But i need the following routine:
let say i must lit the led no 8
Can i made a routine the swith a led (on or off) whrn i give a ledno as parameter ( 1...40)
Please can someone help me
| Quote: |
for(i=0;i<40;i++) {
output_high(DE_DP011_DATA);
delay_ms(100);
output_low(DE_DP011_CLK);
delay_us(50);
output_high(DE_DP011_CLK);
delay_us(50);
}
for(i=0;i<40;i++) {
output_low(DE_DP011_DATA);
delay_ms(100);
output_low(DE_DP011_CLK);
delay_us(50);
output_high(DE_DP011_CLK);
delay_us(50);
}
}
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The Puma
Joined: 23 Apr 2004
Posts: 227
Location: The Netherlands
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| Posted: Sun Sep 16, 2007 3:32 am |
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The hardware is the following:
It has 4 x led matrix ( 10 leds/bar) controlled by 5 x 74HC164
My question is now, how can i switch led 15 on?
There must be an easer method to do that than below
| Code: |
DE_DP011_send_byte(0);
DE_DP011_send_byte(0);
DE_DP011_send_byte(0);
DE_DP011_send_byte(64);
DE_DP011_send_byte(0);
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Now must i send 5 times the send_byte procedure with the correct value
Can i made a procedure and gives as parameter the ledno that will lit
Another nice program where it to display the value of the ADC(PIC) to the ledbar.
In steps of 1024(5volts)/40(leds) = 26
a value below 26 most lit no led, a value >26 and <52 must lit led1 and so on
The source sofar is the this:
| Code: | #include <18F4620.h>
#use delay(clock=20000000)
#fuses HS,NOWDT,NOBROWNOUT,NOPUT,NOLVP,DEBUG,NOSTVREN,NOPROTECT
#include <de_dp011.h>
void main() {
DE_DP011_init();
while(TRUE) {
DE_DP011_send_byte(0);
DE_DP011_send_byte(0);
DE_DP011_send_byte(0);
DE_DP011_send_byte(0);
DE_DP011_send_byte(1);
delay_ms(1000);
}
} |
| Code: | #ifndef DE_DP011_SELECT
#define DE_DP011_SELECT PIN_C0
#define DE_DP011_CLK PIN_C3
#define DE_DP011_DATA PIN_C5
#endif
void DE_DP011_init() {
output_high(DE_DP011_SELECT);
}
void DE_DP011_send_byte(BYTE data) {
BYTE i;
for(i=0;i<8;i++) {
if((data&0x80)==0)
output_low(DE_DP011_DATA);
else
output_high(DE_DP011_DATA);
shift_left(&data,1,0);
output_high(DE_DP011_CLK);
output_low(DE_DP011_CLK);
}
} |
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The Puma
Joined: 23 Apr 2004
Posts: 227
Location: The Netherlands
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| Posted: Wed Sep 19, 2007 9:47 am |
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| Can nobody can help me or give me a hint to do that? |
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