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The Puma
Joined: 23 Apr 2004
Posts: 227
Location: The Netherlands
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| character lookup table access |
 Posted: Tue Mar 14, 2006 2:44 pm |
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How can i get a character in the character table
I would have a write routine that writes a string to a led board
This routine must get the character from this table
| Code: | int const Font[96][5] = {
{0x00, 0x00, 0x00, 0x00, 0x00 ,} // 0x20, Space
{0x00, 0x00, 0x5F, 0x00, 0x00 ,} // 0x21, !
{0x00, 0x07, 0x00, 0x07, 0x00 ,} // 0x22, "
{0x14, 0x7F, 0x14, 0x7F, 0x14 ,} // 0x23, #
{0x24, 0x2A, 0x7F, 0x2A, 0x12 ,} // 0x24, 0x
{0x23, 0x13, 0x08, 0x64, 0x62 ,} // 0x25, %
{0x36, 0x49, 0x55, 0x22, 0x50 ,} // 0x26, &
{0x00, 0x05, 0x03, 0x00, 0x00 ,} // 0x27, '
{0x00, 0x1C, 0x22, 0x41, 0x00 ,} // 0x28, (
{0x00, 0x41, 0x22, 0x1C, 0x00 ,} // 0x29, )
{0x08, 0x2A, 0x1C, 0x2A, 0x08 ,} // 0x2a, *
{0x08, 0x08, 0x3E, 0x08, 0x08 ,} // 0x2b, +
{0x00, 0x50, 0x30, 0x00, 0x00 ,} // 0x2c, ,
{0x08, 0x08, 0x08, 0x08, 0x08 ,} // 0x2d, -
{0x00, 0x60, 0x60, 0x00, 0x00 ,} // 0x2e, .
{0x20, 0x10, 0x08, 0x04, 0x02 ,} // 0x2f, /
{0x3E, 0x51, 0x49, 0x45, 0x3E ,} // 0x30, 0
{0x00, 0x42, 0x7F, 0x40, 0x00 ,} // 0x31, 1
{0x42, 0x61, 0x51, 0x49, 0x46 ,} // 0x32, 2
{0x21, 0x41, 0x45, 0x4B, 0x31 ,} // 0x33, 3
{0x18, 0x14, 0x12, 0x7F, 0x10 ,} // 0x34, 4
{0x27, 0x45, 0x45, 0x45, 0x39 ,} // 0x35, 5
{0x3C, 0x4A, 0x49, 0x49, 0x30 ,} // 0x36, 6
{0x01, 0x71, 0x09, 0x05, 0x03 ,} // 0x37, 7
{0x36, 0x49, 0x49, 0x49, 0x36 ,} // 0x38, 8
{0x06, 0x49, 0x49, 0x29, 0x1E ,} // 0x39, 9
};
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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The Puma
Joined: 23 Apr 2004
Posts: 227
Location: The Netherlands
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| Posted: Thu Mar 16, 2006 9:52 am |
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Thx PCM,
Bot now i which to pass a string to the routine, and this string must be displayed.
How must i change below source?
| Code: | void hcms2911_send_byte(int data) {
int i;
for(i=0;i<8;i++) {
output_bit(HCMS2911_DIN,data & 0x80);
output_high(HCMS2911_CLK);
delay_cycles(2);
output_low(HCMS2911_CLK);
data=data<<1;
}
}
void hcms2911_put(int data) {
output_low(HCMS2911_RS);
output_low(HCMS2911_CE);
hcms2911_send_byte(data);
output_high(HCMS2911_CE);
output_low(HCMS2911_CLK);
}
void readfont(int ccode) {
int cidx;
if(Ccode>=0x20&&Ccode<0x80)
Ccode-=0x20;
for(cidx=0;cidx<5;cidx++)
hcms2911_put(Font[Ccode][cidx]);
}
#include <18F4620.h>
#use delay(clock=20000000)
#fuses HS,NOWDT,NOBROWNOUT,NOPUT,NOLVP,DEBUG,NOSTVREN,NOPROTECT
#include <hcms2911.h>
void main() {
int i;
hcms2911_init();
while (1) {
for(i=0x20;i<0x80;i++) {
readfont(i);
delay_ms(150);
}
}
}
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ckielstra
Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands
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| Posted: Thu Mar 16, 2006 11:47 am |
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| Quote: | | Bot now i which to pass a string to the routine, and this string must be displayed. |
The CCS compiler has a nice addition to the printf command allowing you to assign a function for processing the data one character at a time.
This should do the trick | Code: | | printf(readfont, "It works!"); |
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The Puma
Joined: 23 Apr 2004
Posts: 227
Location: The Netherlands
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| Posted: Thu Mar 16, 2006 12:10 pm |
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It displays the whole message.
But the message must routating from left to right |
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ckielstra
Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands
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| Posted: Thu Mar 16, 2006 12:47 pm |
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How do you expect us to know you want a rotating message? We can't read your mind.
You have most pieces of the puzzle, just add a rotating mechanism. Shouldn't be very difficult to create such a thing but I'm not going to do it for you unless you have shown some effort yourself first. |
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