| Doc ID: |
115 |
| Product: |
WinDriver |
| Version: |
5.22 and above |
How can I improve the rate of the interrupt handling when using DriverBuilder for VxWorks?
|
Beginning with version 5.22, WinDriver for VxWorks (a.k.a. DriverBuilder) implements a call-back routine - windrvr_isr - which, if set by the user, is executed immediately when an interrupt is received, thus enabling you to speed up interrupt acknowledgment and processing.
WinDriver includes the following declaration of windrvr_isr:
int (__cdecl *windrvr_isr)(void);
To use the windrvr_isr call-back routine, do the following:
- Implement your interrupt handler routine:
int __cdecl my_isr(void)
{
// implenet your ISR
return TRUE; // If TRUE, continue regular
// WinDriver hanlding;
// If FALSE, exit ISR.
}
- Include the following declaration in your code:
extern int (__cdecl *windrvr_isr)(void);
- Set windrvr_isr to point to your interrupt handler routine, after calling drvrInit():
windrvr_isr = my_isr;
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