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SED1335 not behave !

 
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Dezso
Guest
SED1335 not behave !
PostPosted: Fri Feb 19, 2010 1:23 am     Reply with quote
Hello

I have a piece of code written in assembly to drive the sed1335. It took me close to two weeks to get a working driver for this chip.
Now I'm running into problem in different area, trying different software to see if I can go faster to reach my goal.

The sed1335.c produce this
http://www.imagebam.com/image/ba324268708322

My asm driver works fine
http://www.imagebam.com/image/aeee6168708320

Any idea why ?
I have modified the sed1335 to match my hardware, even when I turn on a single pixel like "glcd_pixel(40,40,1);" it will turn on two pixels next to each other.

I have checked and rechecked the code. I don't see any difference in my modified code other than the control port and the display width.

Can you help.

Thanks
Dezso:
Dezso
Guest
PostPosted: Fri Feb 19, 2010 10:50 pm     Reply with quote
Got it working.

I have always been a ASM guy, just learning C.

Code:
// Purpose:    Read a byte of data
// Outputs:    The byte of data
int8 glcd_readByte()
{
   byte data;
   set_tris_d(0xFF);
   output_high(GLCD_A0);
   output_high(GLCD_WR);
   output_low(GLCD_CS);
   delay_cycles(2);
   output_low(GLCD_RD);
   delay_cycles(2);
   data = input_d();
   delay_cycles(5);
   output_high(GLCD_RD);
   output_high(GLCD_CS);
   set_tris_d(0x00);
   return data;
}
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