Tag Archives: Character Device Driver
What is Character Driver?
A character device driver is one that transfers data directly to and from a user process. This is the most common type of device driver and there are plenty of simple examples in the source tree. Character device drivers may … Continue reading
character driver
Hi! character driver steps of character driver writing – 1->create structure for device 2->Allocate memory 3->Initialise device 4->Insert device using modprobe /insmod command 5->Release device 3 .
Add the 20 devices and initialise the user defined structure dev in b/w cdev_init and cdev_add
RCS file: header.h,v Working file: header.h head: 1.6 branch: locks: strict access list: symbolic names: keyword substitution: kv total revisions: 6; selected revisions: 6 description: —————————- revision 1.6 date: 2015/04/28 15:54:10; author: root; state: Exp; lines: +16 -0 define the … Continue reading
Initialization, registeration of device driver by using cdev_add() and remove the connection successfully
RCS file: header.h,v Working file: header.h head: 1.5 branch: locks: strict access list: symbolic names: keyword substitution: kv total revisions: 5; selected revisions: 5 description: —————————- revision 1.5 date: 2015/04/26 15:51:54; author: root; state: Exp; lines: +1 -0 removed the … Continue reading
