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/04/linux-os-porting-using-storage/ https://www.emblogic.com/blog/04/linux-os-porting-using-storage/#comments Thu, 25 Apr 2013 11:59:49 +0000 http://www.emblogic.com/blog/?p=6407 successfully done:-
1.toolchain creation
2.beagle board bring-up.

]]> https://www.emblogic.com/blog/04/linux-os-porting-using-storage/feed/ 0 https://www.emblogic.com/blog/02/project-5-character-driver-status/ https://www.emblogic.com/blog/02/project-5-character-driver-status/#comments Sat, 02 Feb 2013 08:28:33 +0000 http://emblogic.org/blog/?p=6119 succesfully implemented:
#cdev_init function
#cdev_add function
#initialised the value of sculldev  for 20 nods
#Open and release functions
#container_of()
#scull_trim function

]]> https://www.emblogic.com/blog/02/project-5-character-driver-status/feed/ 0 https://www.emblogic.com/blog/01/ipc-status-client-server-using-fifo-and-semaphores/ https://www.emblogic.com/blog/01/ipc-status-client-server-using-fifo-and-semaphores/#comments Tue, 08 Jan 2013 14:56:49 +0000 http://emblogic.org/blog/?p=5836 implemented client server program for around 400 clients using fifo and semaphores.
issues:-
while compilation gcc was unable to get the size for variable of union semun.

]]> https://www.emblogic.com/blog/01/ipc-status-client-server-using-fifo-and-semaphores/feed/ 1 https://www.emblogic.com/blog/01/ipc-statusclient-server-using-fifo-and-pipes/ https://www.emblogic.com/blog/01/ipc-statusclient-server-using-fifo-and-pipes/#comments Tue, 08 Jan 2013 06:12:56 +0000 http://emblogic.org/blog/?p=5801 Continue reading →]]> implemented
# fork statement(duplicate process)
# exec function(replace process)
# signals and sigaction
# pipes
#fifo
issues faced:-
1.file descriptor was not being passed using execl() system call.
->resolved by passing address of the fd in the arguments of execl().
2.while implementing addition through a client, addition was being implemented on the ascii values……
->resolved the issue by using the integer input and type-casting it to the character.
3.while implementing fifo if large data was being passed by the large number of clients, the server wasn’t responding due to garbled data(pid and data).

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