Comments for TKJ Electronics

Comment on STM32 Oscilloscope by Frank

Frank — Thu, 18 Feb 2010 21:58:17 +0000

Great work, great video!

Comment on About Me by Thomas Jespersen

Thomas Jespersen — Tue, 16 Feb 2010 21:42:01 +0000

First, I haven’t worked with the ML1881, so I can’t help you there…
I don’t think connecting the Input and the output would break the signal – but I don’t think there will be any overlay… The input will be the same as the output!

Thomas

Comment on About Me by Wilksey

Wilksey — Tue, 16 Feb 2010 01:28:24 +0000

Ok, thank you for replying.

I was having a look at the library, if I dont “clear” the screen, connect the input to the output would that work as an overlay or do you think it would break the signal?

I had to change the CLIP_LEVEL from 300-0 for the OSD to display anything, but the sync is all jittery!

Do you have any information about using an LM1881 with a PIC as a OSD at all?

Regards

Wilksey

Comment on About Me by Thomas Jespersen

Thomas Jespersen — Tue, 16 Feb 2010 00:03:21 +0000

Hi Wlksey.
About the OSD (Super Imposer project), I tried that before making the other project, as I thought it would be easier, as it did only require a PIC12F (8-pin).
But I was wrong… I connected it as descriped, but nothing happened! After alot of testing, rewiring and code-debugging, I concluded that the problem maybe had something to do with the input signal! So I started making the “larger project”, which made the signal itself…

So no, I never got the OSD to work – so no, I’m sorry, I don’t know how to use the PIC PAL library as an overlay device, which is OSD!

Best Regards
Thomas Jespersen

Comment on About Me by Wilksey

Wilksey — Mon, 15 Feb 2010 22:04:30 +0000

Hi,

I hope you dont mind me asking, and will be able to help me!

I notice you have had success with the PIC PAL Library from Bruno @ Micro Examples, I haven’t tried constructing this project yet, I have, however, tried constructing the PIC PAL Super Imposer project, and I have not been able to get it to work, I get a lot of “camera roll”, I was just wondering if you had managed to get it to work at all, or know how to use the PIC PAL as an overlay device?

Regards

Wilksey

Comment on 320×240 Color Display – ILI9919 by Thomas Jespersen

Thomas Jespersen — Sat, 30 Jan 2010 19:49:31 +0000

It looks correct, but you can exclude the Set_Rs; just after the WriteIndex, as the WriteIndex sets the Rs pin high too!
I’ve tried this code too, but the SetWindows command was the thing which was the problem for me!

I’ve sent you an email with my DispPic code and my converter program – please try that and tell me if it works

Comment on 320×240 Color Display – ILI9919 by Frank

Frank — Sat, 30 Jan 2010 18:16:58 +0000

I am using the same library.
I have using the following 2 programs to convert the image to .h

http://www.thaieasyelec.net/archives/Manual/bmp2h_conv%20v5.1.rar
http://www.thaieasyelec.net/archives/Manual/IMG2HEX.rar

This is my DrawPicture routine:

void LCD_DrawPicture(u16 StartX,u16 StartY,u16 EndX,u16 EndY,const unsigned short *pic) {

u32 i;
LCD_SetWindows(StartX,StartY,EndX,EndY);
LCD_SetCursor(StartX,StartY);

Clr_Cs;

LCD_WriteIndex(0×0022);
Set_Rs;
for (i=0;i<(EndX*EndY) ;i++)
{
LCD_WriteData(*pic++);
Clr_nWr;Set_nWr;
}

Set_Cs;
}

Can you please check and verify if the above are working?
Best regards,
Frank

Comment on 320×240 Color Display – ILI9919 by Thomas Jespersen

Thomas Jespersen — Sat, 30 Jan 2010 16:37:17 +0000

Hi Frank.
Have you made your own library? If not, which library are you using?

I’m using a mixed library – I’ve mixed something from the uC/OS LCD library and something from ST’s LCD library.
This included the Pixel, Circle, Text, Square commands – and then I made my own picture display command!

First I save the image file on my computer as a 24-bit BMP.
Next I use a program I made in VB.NET to convert the BMP to a header file.
Last I include the header file in the project, and run the picture display command when needed.

Best regards
Thomas Jespersen

Comment on 320×240 Color Display – ILI9919 by Frank

Frank — Sat, 30 Jan 2010 16:22:58 +0000

Hi Thomas,

I have the same LCD, and I have it all working but I am have a bit of a problem when displaying a picture.

Can you please help me on this?
What routine are you using to display the picture?

Thanks
Frank