GSL_07-HttpServer-RPC-Vars - Simple code to demonstrate how to map an RPC glob…

Users » botdream » Code » GSL_07-HttpServer-RPC-Vars

Nelson Neves / GSL_07-HttpServer-RPC-Vars

Simple code to demonstrate how to map an RPC global variable that controls LED blink functionality via REST HTTP Get request. Note: Demo program to be used on the GeekSessionLab Talk (November 2011). http://devrendezvous.com/?lang=en

Dependencies: EthernetNetIf mbed HTTPServer

main.cpp@0:c9e14abbbc89, 2011-10-27 (annotated)

Committer:: botdream
Date:: Thu Oct 27 23:08:16 2011 +0000
Revision:: 0:c9e14abbbc89

Who changed what in which revision?

User	Revision	Line number	New contents of line
botdream	0:c9e14abbbc89	1	/* //---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	2	// Request to set internal Global var "flag_blink"
botdream	0:c9e14abbbc89	3	http://192.168.1.100/rpc/blink/write%200
botdream	0:c9e14abbbc89	4	http://192.168.1.100/rpc/blink/write%201
botdream	0:c9e14abbbc89	5
botdream	0:c9e14abbbc89	6	http://192.168.1.100/rpc/blink/write 0
botdream	0:c9e14abbbc89	7	http://192.168.1.100/rpc/blink/write 1
botdream	0:c9e14abbbc89	8
botdream	0:c9e14abbbc89	9	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	10	// resources
botdream	0:c9e14abbbc89	11	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	12	http://mbed.org/handbook/C-Data-Types
botdream	0:c9e14abbbc89	13	http://mbed.org/cookbook/RPC-Interface-Library
botdream	0:c9e14abbbc89	14	http://mbed.org/cookbook/HTTP-Server
botdream	0:c9e14abbbc89	15	http://mbed.org/cookbook/Ethernet
botdream	0:c9e14abbbc89	16	http://mbed.org/handbook/Ticker
botdream	0:c9e14abbbc89	17	//--------------------------------------------------------------------------------------------- */
botdream	0:c9e14abbbc89	18	#include "mbed.h"
botdream	0:c9e14abbbc89	19	#include "EthernetNetIf.h"
botdream	0:c9e14abbbc89	20	#include "HTTPServer.h"
botdream	0:c9e14abbbc89	21	#include "RPCVariable.h"
botdream	0:c9e14abbbc89	22	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	23	DigitalOut myled(LED1);
botdream	0:c9e14abbbc89	24	Serial pc(USBTX, USBRX); // tx, rx
botdream	0:c9e14abbbc89	25	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	26	#define internaldebug // send debug messages to USB Serial port (9600,1,N)
botdream	0:c9e14abbbc89	27	//#define dhcpenable // auto-setup IP Address from DHCP router
botdream	0:c9e14abbbc89	28	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	29	// Timer Interrupt - NetPool
botdream	0:c9e14abbbc89	30	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	31	Ticker netpool;
botdream	0:c9e14abbbc89	32	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	33	// Ethernet Object Setup
botdream	0:c9e14abbbc89	34	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	35	#ifdef dhcpenable
botdream	0:c9e14abbbc89	36	EthernetNetIf eth;
botdream	0:c9e14abbbc89	37	#else
botdream	0:c9e14abbbc89	38	EthernetNetIf eth(
botdream	0:c9e14abbbc89	39	IpAddr(192,168,1,100), //IP Address
botdream	0:c9e14abbbc89	40	IpAddr(255,255,255,0), //Network Mask
botdream	0:c9e14abbbc89	41	IpAddr(192,168,1,254), //Gateway
botdream	0:c9e14abbbc89	42	IpAddr(192,168,1,254) //DNS
botdream	0:c9e14abbbc89	43	);
botdream	0:c9e14abbbc89	44	#endif
botdream	0:c9e14abbbc89	45	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	46	// HTTP Server
botdream	0:c9e14abbbc89	47	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	48	HTTPServer httpserver;
botdream	0:c9e14abbbc89	49	LocalFileSystem fs("webfs");
botdream	0:c9e14abbbc89	50
botdream	0:c9e14abbbc89	51	uint8_t flag_blink;
botdream	0:c9e14abbbc89	52	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	53
botdream	0:c9e14abbbc89	54	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	55	// ISR -> Pool Ethernet - will be triggered by netpool ticker
botdream	0:c9e14abbbc89	56	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	57	void netpoolupdate()
botdream	0:c9e14abbbc89	58	{
botdream	0:c9e14abbbc89	59	Net::poll();
botdream	0:c9e14abbbc89	60	}
botdream	0:c9e14abbbc89	61	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	62
botdream	0:c9e14abbbc89	63	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	64	// MAIN
botdream	0:c9e14abbbc89	65	//---------------------------------------------------------------------------------------------
botdream	0:c9e14abbbc89	66	int main()
botdream	0:c9e14abbbc89	67	{
botdream	0:c9e14abbbc89	68	// Set Serial Port Transfer Rate
botdream	0:c9e14abbbc89	69	pc.baud(115200);
botdream	0:c9e14abbbc89	70
botdream	0:c9e14abbbc89	71	//--------------------------------------------------------
botdream	0:c9e14abbbc89	72	// Setting Ethernet
botdream	0:c9e14abbbc89	73	//--------------------------------------------------------
botdream	0:c9e14abbbc89	74	#ifdef internaldebug
botdream	0:c9e14abbbc89	75	printf("\r\nSetting up Ethernet interface!\r\n");
botdream	0:c9e14abbbc89	76	#endif
botdream	0:c9e14abbbc89	77	// Create return object for error check
botdream	0:c9e14abbbc89	78	EthernetErr ethErr = eth.setup();
botdream	0:c9e14abbbc89	79	if(ethErr)
botdream	0:c9e14abbbc89	80	{
botdream	0:c9e14abbbc89	81	#ifdef internaldebug
botdream	0:c9e14abbbc89	82	printf("\r\nError %d in Ethernet setup.\r\n", ethErr);
botdream	0:c9e14abbbc89	83	#endif
botdream	0:c9e14abbbc89	84	return -1;
botdream	0:c9e14abbbc89	85	}
botdream	0:c9e14abbbc89	86	#ifdef internaldebug
botdream	0:c9e14abbbc89	87	printf("\r\nEthernet setup completed with success!\r\n");
botdream	0:c9e14abbbc89	88	#endif
botdream	0:c9e14abbbc89	89	//--------------------------------------------------------
botdream	0:c9e14abbbc89	90
botdream	0:c9e14abbbc89	91	//--------------------------------------------------------
botdream	0:c9e14abbbc89	92	// adding RPC variables
botdream	0:c9e14abbbc89	93	//--------------------------------------------------------
botdream	0:c9e14abbbc89	94	flag_blink = false;
botdream	0:c9e14abbbc89	95	RPCVariable<uint8_t> RPCblink(&flag_blink, "blink");
botdream	0:c9e14abbbc89	96	//--------------------------------------------------------
botdream	0:c9e14abbbc89	97
botdream	0:c9e14abbbc89	98	//--------------------------------------------------------
botdream	0:c9e14abbbc89	99	// adding Handlers
botdream	0:c9e14abbbc89	100	//--------------------------------------------------------
botdream	0:c9e14abbbc89	101	FSHandler::mount("/webfs", "/"); //Mount /webfs path on web root path
botdream	0:c9e14abbbc89	102
botdream	0:c9e14abbbc89	103	httpserver.addHandler<RPCHandler>("/rpc");
botdream	0:c9e14abbbc89	104	httpserver.addHandler<FSHandler>("/"); //Default handler
botdream	0:c9e14abbbc89	105	//--------------------------------------------------------
botdream	0:c9e14abbbc89	106
botdream	0:c9e14abbbc89	107	//--------------------------------------------------------
botdream	0:c9e14abbbc89	108	// bind http server to port 80 (Listen)
botdream	0:c9e14abbbc89	109	//--------------------------------------------------------
botdream	0:c9e14abbbc89	110	httpserver.bind(80);
botdream	0:c9e14abbbc89	111	#ifdef internaldebug
botdream	0:c9e14abbbc89	112	printf("Listening on port 80!\r\n");
botdream	0:c9e14abbbc89	113	#endif
botdream	0:c9e14abbbc89	114	//--------------------------------------------------------
botdream	0:c9e14abbbc89	115
botdream	0:c9e14abbbc89	116	//--------------------------------------------------------
botdream	0:c9e14abbbc89	117	// ISR -> attach timer interrupt to update Net::Pool();
botdream	0:c9e14abbbc89	118	//--------------------------------------------------------
botdream	0:c9e14abbbc89	119	netpool.attach(&netpoolupdate, 0.1);
botdream	0:c9e14abbbc89	120	//--------------------------------------------------------
botdream	0:c9e14abbbc89	121
botdream	0:c9e14abbbc89	122	//--------------------------------------------------------
botdream	0:c9e14abbbc89	123	// main loop
botdream	0:c9e14abbbc89	124	//--------------------------------------------------------
botdream	0:c9e14abbbc89	125	// main loop
botdream	0:c9e14abbbc89	126	while(1)
botdream	0:c9e14abbbc89	127	{
botdream	0:c9e14abbbc89	128	if(flag_blink)
botdream	0:c9e14abbbc89	129	{
botdream	0:c9e14abbbc89	130	myled = 1;
botdream	0:c9e14abbbc89	131	wait(0.5);
botdream	0:c9e14abbbc89	132	myled = 0;
botdream	0:c9e14abbbc89	133	}
botdream	0:c9e14abbbc89	134	wait(0.5);
botdream	0:c9e14abbbc89	135	}
botdream	0:c9e14abbbc89	136	}
botdream	0:c9e14abbbc89	137	//---------------------------------------------------------------------------------------------

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Type:	Program
Created:	27 Oct 2011
Imports:	15
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	4
Followers:	2

main.cpp@0:c9e14abbbc89, 2011-10-27 (annotated)

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