Hello Friends,
I have few doubts:
(1) Which is the best method for transferring data between User space and
rt-space/kernel space. I have used FIFO, MEM Buf etc. But I am not still
clear which one should I use. Somebody Please advice.
(2) I want to develop a complete POSIX RT-DRIVER. When I found the details
of implementing it, I got lost in so many things. (I am trying In RT-Linux
3.0) I found that rtl_fifo is using functions from rtl_posixio. rtl_fifo is
registering the device two ways. (i.e.) with register_chrdev(...) and
rtl_register_chrdev(...). Why is it registering like this. If I want to
develop a RealTime-driver with POSIX Standard, should I register the same
way or shall I use rtl_register_chrdev. If I use rtl_register_dev alone, my
normal application is not able to open the device using
open("/dev/sampdrv",0);. Please advice me on how to implement the POSIX
RT-driver.
(3) I want to use IOCTL based communication apart from FIFO and MEM buf. How
should I do this.
(4) From the beginning of my development I can see information about comedi.
Should I use comedi for implementing my driver or can I have my own method
of implementing.
(5) Is there a specific standard for developing RT-Linux driver.
Friend in deed is a friend in need
Regards
Vijay Ananth
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