Re: [ECOS] question about interrupt service?

[Jonathan Larmour <jlarmour at redhat dot com>]

li hui wrote:
> 
> I had tried to revise my code,but it still failed to
> response interrupt! I set my mouse on com2, My code is
> below, please give me some advice to let it run.

> static int mouse_lookup()
> {
>         if (mouse_user++)
>         {
>                 return 0;
>         }
>         /****************************/
>         /*****omit request IRQ ******/
>         /****************************/
>         /******ecos IRQ**************/
> 
>     vga_setmode(G360x480x256);
> 
>         diag_printf("enter init\n");

Is this actually printed?
 
> static void mouse_interupt(cyg_vector_t vector,
> cyg_ucount32 count, cyg_addrword_t data)
> {
>         //vga_setcolor(15);
>         //vga_drawpixel(50,50+ticks*5);
>          diag_print("in DSR\n);
> }

You can't have compiled this code. diag_print isn't the right name! It
should be diag_printf.

Maybe the mouse port doesn't generate interrupts until it is directly
enabled (e.g. by sending something) in some way. Consult a PC Hardware
book.

Also compile eCos with assertions enabled and link your app with that. That
may tell you about any other problems. For example if you have the
interrupt wrong, it will probably tell you "Spurious interrupt".

Jifl
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