Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: How to init the SPI device in daemon?
Top Forums Programming How to init the SPI device in daemon? Post 302570867 by bus147 on Friday 4th of November 2011 01:07:06 PM
Old 11-04-2011
How to init the SPI device in daemon?
I have to make a linux monitoring daemon that works with a SPI device (/dev/spidev). However, I always failed to init this SPI device. The return error code is 25, which means "inappropriate ioctl for device". As I know, daemon runs in background and doesn't have a control terminal and this might be the reason that caused SPI device failed to init.

If I make a similar program and run it manually under Linux shell then it can init the SPI device properly without any problem.

My question is: Is there a way to init the SPI device if I run my program as a daemon?

Thank you
 

9 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Init 6 & Init 0 problem

Hi Expert, I have encountered some problem with my SUN system. Everytime when i issue command #init 6 OR #init 0 it just logout and prompt for login again instead of rebooting the server when run init 6 and system shutdown when run init 0.. I can only reboot the system using reboot ... Was... (6 Replies)
Discussion started by: sc2005
6 Replies

2. Linux

How to I change init levels after typing init 1

Dear all, I typed in init 1 on my redhat box as root and according to wikipedia (http://en.wikipedia.org/wiki/Runlevel): 1 Single-User Mode Does not configure network interfaces, start daemons, or allow non-root logins So now I can't connect back to it. How do I change the init back to 3?... (8 Replies)
Discussion started by: z1dane
8 Replies

3. Red Hat

Difference between 'init s' and 'init 1'

What is the difference between 'init s' and 'init 1'. I know that both will work to change the current run level to single user mode. Is there any difference in those two commands? (5 Replies)
Discussion started by: praveen_b744
5 Replies

4. UNIX for Advanced & Expert Users

Problem on init 0, execution is the same with init 6

Hi, I am experiencing a weird thing on my SUNFIRE machine with Solaris 9 OS. When I do init 0 to shutdown the machine to go to ok prompt, what it did was shutdown and reboot like an init 6 command do. I did check the corresponding rc scripts that were involved with init 0 and compared with rc... (2 Replies)
Discussion started by: Yenthanh
2 Replies

5. Solaris

What is the diffe b/w init s and init S

i did my research in finding the answer but couldn't find right one. Please give your inputs. (6 Replies)
Discussion started by: ranumala
6 Replies

6. Red Hat

init-script failing because of /etc/rc.d/init.d/functions

I encountered a problem on one of our database servers. OS: CentOS 5.5 final Kernel: 2.6.18-238.5.1.el5.028stab085.2 (OpenVZ kernel) We wrote some DB-Start/Stop-scripts ("/db2/admin/scripts_dba/start_services.ksh" and ".../stop_services.ksh") to start the database instances. (Database... (1 Reply)
Discussion started by: bakunin
1 Replies

7. Red Hat

Unable To Activate Ethernet Network Device in RHEL 5.5 - e100 device eth0 does not seem to be presen

Hi All, Could anyone please help to resolve the below problem. I installed RHEL5.5 in my desktop.But when i try to activate the ethernet connection then it gives me the error. I spent 2 days for the above and go through with several suggestion found by googling. But no luck. ... (0 Replies)
Discussion started by: Tanmoy
0 Replies

8. Red Hat

Device-mapper behaviour booting on init=bin/bash

Good morning Recently we needed to change the password from a redhat 6.5 system that no one knew the root password. Starting the system with the init=/bin/bash method took us to the following scenario: system_vg active with only root_lv and tmpfs mounted. our entries at fstab are like... (1 Reply)
Discussion started by: Ikaro0
1 Replies

9. HP-UX

Failed to open tape device /dev/rmt/0mn:Device busy (errno = 16)

Hi, Unable to make tape backup, please help. /opt/ignite/bin/make_tape_recovery -a /dev/rmt/?mn -I -v -m tar -x inc_entire=vg00 * Creating local directories for configuration files and archive. ======= 04/25/16 16:28:08 IST Started /opt/ignite/bin/make_tape_recovery. (Mon... (4 Replies)
Discussion started by: anuragr
4 Replies

LEARN ABOUT OPENSOLARIS

at-spi-registryd

at-spi-registryd(1)						   User Commands					       at-spi-registryd(1)

NAME

       at-spi-registryd - The AT-SPI registry daemon

DESCRIPTION

       at-spi-registryd is the AT-SPI registry daemon. It provides a mechanism for all assistive technologies to discover and interact with appli-
       cations running on the desktop. Usually, at-spi-registryd is started by gnome-session when accessibility is enabled.

FILES

       The following files are used by this application:

       /usr/lib/at-spi-registryd

	   An application running the AT-SPI registry

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgnome-a11y-libs	   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Volatile			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       libatk-1.0(3), libcspi(3), attributes(5)

NOTES

       at-spi-registryd module is in at-spi package.

SunOS 5.11							    3 Dec 2006						       at-spi-registryd(1)
All times are GMT -4. The time now is 03:26 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy