https://www.emblogic.com/blog Embedded System and ARM Training Tue, 03 Mar 2020 13:00:06 +0000 en-US hourly 1 http://wordpress.org/?v=3.9.1 https://www.emblogic.com/blog/12/status-of-environment-variables/ https://www.emblogic.com/blog/12/status-of-environment-variables/#comments Thu, 22 Dec 2011 13:47:26 +0000 http://emblogic.org/blog/?p=1376 I successfully extract and change the environment variable using getenv() and putenv().also complete the syslog for log entries and and setlogmask….

]]> https://www.emblogic.com/blog/12/status-of-environment-variables/feed/ 0 https://www.emblogic.com/blog/10/problem-regarding-to-scull/ https://www.emblogic.com/blog/10/problem-regarding-to-scull/#comments Tue, 11 Oct 2011 06:42:48 +0000 http://emblogic.org/blog/?p=1083 Continue reading →]]> I create the scull of item size 12 Bytes(qset=3,quantum=4), in that when i perform write operation only first 12 bytes are write and remaining are discarded means only one item wrote and item size is not increased. I am confusing where the problem occurs.

]]> https://www.emblogic.com/blog/10/problem-regarding-to-scull/feed/ 2 https://www.emblogic.com/blog/10/character-driver-status/ https://www.emblogic.com/blog/10/character-driver-status/#comments Tue, 04 Oct 2011 10:14:15 +0000 http://emblogic.org/blog/?p=1012 I have done register, unregister the character driver successfully and also open & release the character driver successfully. In this i am facing the problem regarding to container_of().

]]> https://www.emblogic.com/blog/10/character-driver-status/feed/ 1 https://www.emblogic.com/blog/10/problem-regarding-to-container_of/ https://www.emblogic.com/blog/10/problem-regarding-to-container_of/#comments Tue, 04 Oct 2011 10:01:19 +0000 http://emblogic.org/blog/?p=1008 local_dev=container_of(inode->i_cdev, struct scull_dev,cdev1);
in above function, i don’t know how container_of() give the minor number and also how assign global device to local device.

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