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I suspect that the CCS compiler is broken and you can not use pointers to functions. I know I have tried and it does not work.

Trampas

ritchie,

Is your concern the portablitly of the code?

Since the CCS compiler does not have a linker, their is no other way to locate the variable other than the #locate.

What you can do is ...

I have had the same problem with CCS. The best advice I have to switch to a real compiler, the C18 is not too bad...

Trampas

Since the orignal poster mentioned that the signal was 1Khz the interrupt latency is not an issue. But you are correct a tight polling loop is much faster, as long as you do not need to do anything el ...

The dsPIC can not do it either. Think about it...

You need to update a pixel every clock at about 18Mhz, 256 colors you would have a byte per color. Therefore to buffer the image you need 307Kbyte ...

Did you all hear that? That was the light going on....

When the 18F8720 first came out I had bug where the GIE bit would magically get cleared. I called Microchip for weeks trying to figure out wh ...

The way the LCD works is that it has a horz and vertical sync signal and then a pixel clock. So when the vertical signal goes high the display pixel counter moves to top of screen. When the horz sync ...

I suggest the book "C Programmers Guide to Serial Communication" this book discusses a lot about serial NRZ and different file download protocols.

Trampas

Go buy a GPS with serial output, then read up on the NEMA standard. Interfacing with a GPS is as simple as parsing the NEMA data.

Trampas

Yes, I am sure several of us know how to do it.

1) design board with some large external memory.
2) make and populate board
3) write drivers for LCD and memory
4) load external memory with bit ...

One of the easiest methods is to use the KBI (Key board interrupts) or the external interrupts.

The key board interrupts work well as you get trigger on both edges of the signal. The external int ...

Well CCS rules one:

1) If at first your program does not run, try newer compiler.

2) If with new compiler code does not run try different optimization levels.

3) If code still does not run ...

You are off to a good start....

First off in your design do you have a serial port for connecting PIC to PC?

main()
{
char data[20];
int i;

i=0;
...

I would recommend using copper wire, it is cheap and carries electrons well.

Of course I assume this is not your question, so why don't you try again...

Trampas

Vagman,

This is Trampas Stern with the OBDII device...

I use an external Flash chip to store the code information. I also have prototypes devices with SD cards. However the only reason to use r ...