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Franchu
Guest
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| Lascar SP 5-GFX1 Graphics Display |
 Posted: Thu Oct 04, 2007 9:45 am |
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Hello.
I have two SP 5-GFX1 from Lascar
The display has a serial interface (SCL, SI and CS).
I have read the manual but the display don't turn on.
There'are some examples but they are for Hi-Tech C compiler. I've tryed to convert it to CCs but it doesn't work.
Please, Does anybody a example for this display?.
I have used a 18f4550 at 20MHz.
Thank you. |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Thu Oct 04, 2007 5:39 pm |
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You should provide a link to those routines. I did a Google search
and I think this is the sample Hitech code:
http://www.geocities.com/g13685/SP5_GFX1_image.zip
You need to translate these functions to CCS:
| Code: | gfx1_ser_output()
gfx1_write_command()
gfx1_write_data()
gfx1_start_up()
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On every line that sets a pin high, such as this:
Change it to use the output_high() function, like this:
| Code: | | output_high(gfx1_SI); |
For lines that set a pin low, such as this:
Change it to use the output_low() function, like this:
| Code: | | output_low(gfx1_A0P); |
On some lines, they set the TRIS like this:
| Quote: | gfx1_Reset_direction = output;
gfx1_A0P_direction = output;
gfx1_SI_direction = output;
gfx1_SCL_direction = output; |
You don't need those lines. Just comment them out. In "standard i/o"
mode, the CCS compiler will automatically set the correct TRIS, when
you use the output_low() and output_high() functions. Standard i/o mode
is the default mode of the compiler. You don't have to specifiy it.
It's normally in effect, unless you specify a different mode. |
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flguille
Joined: 04 Oct 2007
Posts: 1
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| Posted: Fri Oct 05, 2007 12:05 pm |
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Thank you.
i've tried to convert the code for CCS compiler, but it doesn't work.
I think that i have a problem with the time betwen instrucction. I have saw the PDF of the Display and I insert a delay betwen the change of the SCL signal:
void gfx1_ser_output( unsigned char x )
{
signed char i;
for(i=7; i>=0; i--)
{
if ((x>>i)&0x01)
{
output_high(gfx1_SI);
}
else
{
output_low(gfx1_SI);
}
delay_us(1);
output_low(gfx1_SCL);
delay_us(1);
output_high(gfx1_SCL);
}
}
But I have not idea. This solution doesn't work.
Thank you again.
| PCM programmer wrote: | You should provide a link to those routines. I did a Google search
and I think this is the sample Hitech code:
http://www.geocities.com/g13685/SP5_GFX1_image.zip
You need to translate these functions to CCS:
| Code: | gfx1_ser_output()
gfx1_write_command()
gfx1_write_data()
gfx1_start_up()
|
On every line that sets a pin high, such as this:
Change it to use the output_high() function, like this:
| Code: | | output_high(gfx1_SI); |
For lines that set a pin low, such as this:
Change it to use the output_low() function, like this:
| Code: | | output_low(gfx1_A0P); |
On some lines, they set the TRIS like this:
| Quote: | gfx1_Reset_direction = output;
gfx1_A0P_direction = output;
gfx1_SI_direction = output;
gfx1_SCL_direction = output; |
You don't need those lines. Just comment them out. In "standard i/o"
mode, the CCS compiler will automatically set the correct TRIS, when
you use the output_low() and output_high() functions. Standard i/o mode
is the default mode of the compiler. You don't have to specifiy it.
It's normally in effect, unless you specify a different mode. |
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