Jimmy Hack / Mbed 2 deprecated RPCTest

A test of creating custom classes for control over RPC. Creates an LED class with member functions callable over serial.

Dependencies:   mbed

main.cpp@4:840f6002b8c2, 2010-09-29 (annotated)

Committer:
JimmyTheHack
Date:
Wed Sep 29 01:48:43 2010 +0000
Revision:
4:840f6002b8c2
Parent:
3:d70703d85ff9 
separate header file to try to get documentation.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JimmyTheHack 4:840f6002b8c2 1 #include LED.h
JimmyTheHack 0:b0ab03e03fdc 2
JimmyTheHack 0:b0ab03e03fdc 3
JimmyTheHack 1:ddf1739fcbb8 4 /**Initialization Function**/
JimmyTheHack 1:ddf1739fcbb8 5 LED::LED(PinName mypin, const char *name) : Base(name), LEDpin(mypin) { //initialize pin
JimmyTheHack 0:b0ab03e03fdc 6 LEDpin.write(0);
JimmyTheHack 0:b0ab03e03fdc 7 state=false; //set LED to off
JimmyTheHack 0:b0ab03e03fdc 8 }
JimmyTheHack 1:ddf1739fcbb8 9 /**switch the state of the LED**/
JimmyTheHack 1:ddf1739fcbb8 10 int LED::toggle() {
JimmyTheHack 0:b0ab03e03fdc 11 if (state==0) {
JimmyTheHack 0:b0ab03e03fdc 12 state=1;
JimmyTheHack 0:b0ab03e03fdc 13 } else {
JimmyTheHack 0:b0ab03e03fdc 14 state=0;
JimmyTheHack 0:b0ab03e03fdc 15 }
JimmyTheHack 0:b0ab03e03fdc 16 LEDpin=state;
JimmyTheHack 0:b0ab03e03fdc 17 return state; //print the current state of the LED
JimmyTheHack 0:b0ab03e03fdc 18 }
JimmyTheHack 0:b0ab03e03fdc 19
JimmyTheHack 1:ddf1739fcbb8 20 /**blink the LED n times**/
JimmyTheHack 1:ddf1739fcbb8 21 void LED::blink(int n=1) {
JimmyTheHack 0:b0ab03e03fdc 22 do { //blink at least once
JimmyTheHack 0:b0ab03e03fdc 23 toggle(); //toggle LED state
JimmyTheHack 0:b0ab03e03fdc 24 wait(.2);
JimmyTheHack 0:b0ab03e03fdc 25 toggle(); //return LED to original state
JimmyTheHack 0:b0ab03e03fdc 26 wait(.2);
JimmyTheHack 0:b0ab03e03fdc 27 n--;
JimmyTheHack 0:b0ab03e03fdc 28 } while (n>=1);
JimmyTheHack 0:b0ab03e03fdc 29 }
JimmyTheHack 0:b0ab03e03fdc 30
JimmyTheHack 0:b0ab03e03fdc 31
JimmyTheHack 0:b0ab03e03fdc 32 #ifdef MBED_RPC
JimmyTheHack 1:ddf1739fcbb8 33 /**Create a list of the available methods which can be called for this class**/
JimmyTheHack 1:ddf1739fcbb8 34 const rpc_method *LED::get_rpc_methods() {
JimmyTheHack 0:b0ab03e03fdc 35 static const rpc_method rpc_methods[] = {
JimmyTheHack 0:b0ab03e03fdc 36 { "toggle", rpc_method_caller<int, LED, &LED::toggle> }, //first specify the name string. The arguments to rpc_method_caller appear to be <outputs, RPC class, inputs, reference to function>.
JimmyTheHack 0:b0ab03e03fdc 37 //In this case, we have one output and no inputs so they are skipped. We must only specify the class of the object the method belongs to and the address of the method.
JimmyTheHack 0:b0ab03e03fdc 38
JimmyTheHack 0:b0ab03e03fdc 39 { "blink", rpc_method_caller<LED, int, &LED::blink> }, //this method has no outputs so they are skipped, but we must specify the input to be of type int.
JimmyTheHack 0:b0ab03e03fdc 40 RPC_METHOD_SUPER(Base),
JimmyTheHack 0:b0ab03e03fdc 41 };
JimmyTheHack 0:b0ab03e03fdc 42 return rpc_methods;
JimmyTheHack 0:b0ab03e03fdc 43 }
JimmyTheHack 1:ddf1739fcbb8 44 /**Register the class itself as an RPC-callable class**/
JimmyTheHack 1:ddf1739fcbb8 45 rpc_class *LED::get_rpc_class() {
JimmyTheHack 0:b0ab03e03fdc 46 static const rpc_function funcs[] = {
JimmyTheHack 0:b0ab03e03fdc 47 { "new", rpc_function_caller<const char*, PinName, const char*, &Base::construct<LED,PinName,const char*> > }, //still don't fully understand the arguments in this line. I suppose the first argument may just be an output echo of the name.
JimmyTheHack 0:b0ab03e03fdc 48 RPC_METHOD_END
JimmyTheHack 0:b0ab03e03fdc 49 };
JimmyTheHack 0:b0ab03e03fdc 50 static rpc_class c = { "LED", funcs, NULL };
JimmyTheHack 0:b0ab03e03fdc 51 return &c;
JimmyTheHack 0:b0ab03e03fdc 52 }
JimmyTheHack 0:b0ab03e03fdc 53 #endif // MBED_RPC
JimmyTheHack 0:b0ab03e03fdc 54
JimmyTheHack 0:b0ab03e03fdc 55
JimmyTheHack 0:b0ab03e03fdc 56 /* end LED class definition */
JimmyTheHack 0:b0ab03e03fdc 57
JimmyTheHack 0:b0ab03e03fdc 58
JimmyTheHack 0:b0ab03e03fdc 59
JimmyTheHack 0:b0ab03e03fdc 60
JimmyTheHack 0:b0ab03e03fdc 61
JimmyTheHack 0:b0ab03e03fdc 62 Serial pc(USBTX, USBRX); //set up serial communication
JimmyTheHack 1:ddf1739fcbb8 63 /**Wait for RPC commands and then call the interpreter**/
JimmyTheHack 1:ddf1739fcbb8 64 int main() {
JimmyTheHack 0:b0ab03e03fdc 65 // specify which classes we would like to be able to call over LED
JimmyTheHack 0:b0ab03e03fdc 66 Base::add_rpc_class<Timer>(); //a class included in the core mbed RPC library
JimmyTheHack 0:b0ab03e03fdc 67 Base::add_rpc_class<LED>(); //my own custom LED class
JimmyTheHack 0:b0ab03e03fdc 68
JimmyTheHack 0:b0ab03e03fdc 69 // receive commands, and send back the responses
JimmyTheHack 0:b0ab03e03fdc 70 char buf[256], outbuf[256];
JimmyTheHack 0:b0ab03e03fdc 71 while (1) {
JimmyTheHack 0:b0ab03e03fdc 72 pc.gets(buf, 256); //grab serial commands
JimmyTheHack 0:b0ab03e03fdc 73 rpc(buf, outbuf); //interpret the RPC commands
JimmyTheHack 0:b0ab03e03fdc 74 //this function only requires an input string and output string, so we can obtain RPC commands via a different interface than serial if desired.
JimmyTheHack 0:b0ab03e03fdc 75 pc.printf("%s\n", outbuf); //print back over serial
JimmyTheHack 0:b0ab03e03fdc 76 }
JimmyTheHack 0:b0ab03e03fdc 77 }
JimmyTheHack 0:b0ab03e03fdc 78
JimmyTheHack 0:b0ab03e03fdc 79
JimmyTheHack 0:b0ab03e03fdc 80