LinuxQuestions.org
Visit the LQ Articles and Editorials section
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices

Reply
 
Search this Thread
Old 03-06-2003, 03:41 PM   #1
sinux
LQ Newbie
 
Registered: Mar 2003
Posts: 5

Rep: Reputation: 0
Unable to HIT IRQ4 , Serial Port Driver


Hi All,

I am in process of writing a serial port driver on x86 on linux.
For some reason whenever i send some data to serial port
my IRQ4 interrupt handler is not being invoked.

1) I used register_irq(..) , register my interrupt handler , which
returns success.

2) On opening /proc/interupt file i see IRQ 4 registered by my driver ,though there is not even a single hit.

3) I have set IER(Interrupt Enable Register) low four bits to 1 to enable all serial port interrupts.

Please Suggest

Thanks
Sanjay
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Unable to communicate using serial port (COM1) /dev/ttys0 vinaybms Linux - Networking 1 03-11-2005 08:08 AM
Unable to hit my serial port interrupt routine hguts Linux - Software 1 07-15-2003 07:45 AM
IRQ4 - Serial Port Interrupt not invoked. sinux Linux - General 1 03-06-2003 04:23 PM
Unable to hit IRQ4 Serial Port Interrupt sinux Linux - Distributions 1 03-06-2003 03:46 PM
IRQ4 Serial Port Not invoked sinux Linux - Hardware 1 03-06-2003 03:45 PM


All times are GMT -5. The time now is 07:37 AM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration