Hi all! I am newbie to embedded. I was asked to create a simple shell for arm processor with 4x20 Lcd display. Basically I dont have any idea about shell. i have googled abt shell and understood that its a command line interpreter. I need to diplay on the lcd and need to execute some simple commands like renaming file,ls, making a directory etc....File system has already been there on the board. i want to know how framebuffer is allocated and some information about command database (i suppose its a structure that contains command name and fucntion pointer for correspondign command). i dont have any OS and need to write a plain C code.
Appreciate any suggestions,or any help ,any related site addresses.....
Thanq all, Kris.