A test of creating custom classes for control over RPC. Creates an LED class with member functions callable over serial.
LED.h
- Committer:
- JimmyTheHack
- Date:
- 2010-09-29
- Revision:
- 4:840f6002b8c2
File content as of revision 4:840f6002b8c2:
/* Test of custom RPC classes. An introduction to the RPC environment. Based heavily off of code from iva2k http://mbed.org/users/iva2k/programs/pub_iva2k_ethrpc/gpdz3x in turn based off of servo library http://mbed.org/projects/cookbook/svn/Servo/trunk/Servo.h http://mbed.org/projects/cookbook/svn/Servo/trunk/Servo.cpp This code features heavy copy-pasting, so I take little credit for the content. My goal was not to create original code, but to put together a basic introduction to help myself and others understand how to implement custom classes in RPC. This code creates a custom RPC class called LED. The LED class contains two member functions, toggle and blink. Normally when compiling a program the original names of the objects are lost. In order to be able to call these functions by name after compiling, we must save the name in a string. The name of our object and necessary arguments for the initialization function are saved using the get_rpc_class() function. The name of each member function and their arguments must also be registered using get_rpc_methods(). From: http://mbed.org/cookbook/Interfacing-Using-RPC RPC Commands are in the format: "/<Object name>/<Method name> <Arguments separated by spaces> If you send just "/" mbed will return a list of objects that can be used If you send "/<object name>/" then mbed will return the methods which can be used on this object. I haven't finished digging through this yet, but I think most of the documentation for the RPC functions is in the files: http://mbed.org/projects/libraries/svn/mbed/trunk/Base.h http://mbed.org/projects/libraries/svn/mbed/trunk/rpc.h */ /** Includes * */ #include "mbed.h" #include "rpc.h" /**Class: LED * *attached to an LED pin, contains simple blink functionality over serial */ class LED :public Base { //make sure to define the class with inheritance from the Base RPC class. public: /** *Constructor */ LED(PinName mypin, const char *name=NULL); /**Blink LED*/ void blink(int n); /** switch state of LED*/ int toggle(); /** pin LED is attached to*/ DigitalOut LEDpin; /**state of LED */ int state; #ifdef MBED_RPC //this code will not compile unless we have included the rpc.h file. So this class can also be used without RPC. /**Defines the methods available over RPC*/ virtual const struct rpc_method *get_rpc_methods(); /**Defines the RPC class*/ static struct rpc_class *get_rpc_class(); #endif // MBED_RPC };