Hello,
Can I use the macro or function INIT_CMOS_CLOCK? In "The RTLinux Manifesto"
under the Interrupt handlers section (pg. 8), the document says the
following:
Instead of using the calls to the scheduler module - rtl_task_wait,
rtl_task_init, and rtl_task_make_periodic - we could simply attach our
function to a timer. Using similar task code, we could change the
initializing code as follows.
int init_module(void)
{
rtl_request_irq(CMOS_CLOCK, handler_ptr);
INIT_CMOS_CLOCK(FIFTYMS);
return 0;
}
My questions are:
1. If I can implement this approach, then what header file (.h file)
contains the CMOS_CLOCK definition and the prototype or macro
definition for INIT_CMOS_CLOCK? If there is no .h file containing these
references, then what is the interrupt number (irq) of this
CMOS clock?
2. Will the irq for my serial communications ports be a number (like 3 or 4)
or will it be an address in hex? When my system
boots, I see numbers (3 or 4-I think) and addresses (in hex) assigned to
my comm ports; and I was wondering what I should
use for the irq when I call interrupt functions like rtl_request_irq( ).
Thank you very much.
Bill
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