[ts-7000] Working with /dev/rtc

[Mike Magee <>]

I am unable to communicate with /dev/rtc using the ioctl() function and
I was wondering if someone could help.  When I try code like this:

fd = open ("/dev/rtc", O_RDONLY);
retval = ioctl(fd, RTC_IRQP_SET, data);

I get the message: "Inappropriate ioctl for device".  In linux/rtc.h
RTC_IRQP_SET is defined to be _IOW('p', 0x0c, unsigned long), and I'm
not really sure what that means.

Here is an outline of the code that worked under the x86 TS-5700 board
that I want to get working on the ARM TS-7260:

fd = open ("/dev/rtc", O_RDONLY);
retval = ioctl(fd, RTC_IRQP_SET, data);
retval = ioctl(fd, RTC_IRQP_READ, &tmp);
retval = ioctl(fd, RTC_PIE_ON, 0);
while(1) {
   // block waiting for next interrupt
   retval = read(fd, &data, sizeof(unsigned long));
   ...do stuff...
}

I am using the default kernel that comes with the development kit
(2.4.26-ts11) and I have the SD Card Socket option and the Battery
Backed Real Time Clock option installed.
-- 
Mike Magee <>
Remtrol Inc.



 
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