Add commands to vivi and vivi

Add commands to vivi and vivi

Add your own commands in lib/command. c of vivi

The core data structure is user_command.

Typedef struct user_command {

Const char * name; // command name

Void (* prop func) (int argc, const char **); // command execution function

Struct user_command * next_cmd; // The next command

Const char * helpstr; // help

} User_command_t;

 

Step 1:

First, construct a user_command instance, for example:

User_command_t mytest_cmd = {

"Mytest ",

Command_mytest,

NULL,

"Mytest [{cmds}]/t-Add my command for test? "

};

 

Step 2:

Then implement the real command_test function of the command.

Void command_mytest (int argc, const char ** argv)

{

If (argc = 2)

If (strncmp (argv [1], "help", strlen (argv [1]) = 0)

{

Printk ("myTest Command Help/n ");

Return;

}

Printk ("myTest Command exec/n"); // This uses printk to output information

Return;

}

 

After the program extern user_command_t ....... Before adding, you should first write the function and then write the struct.

 

Step 3

Add commands to the System

In command. c

Add add_command (& mytest_cmd) to the end of int init_builtin_cmds (void) function );

This function is at the end of the program.

Generate a vivi Image

Make clean

Make menuconfig

Make

Installation: load flash vivi x

Test: Go to vivi and run the command: mytest

 

Execute help. The command mytest is displayed in the command list.