mbed_osc - Control of mbed using OSC. Based on code from the…

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Control of mbed using OSC. Based on code from the Make Controller. Right now you can turn the onboard LEDs on/off and toggle 8 digital out pins. More I/O will be done in the future.

Dependencies: mbed

mbed_osc.cpp@0:439354122597, 2010-03-17 (annotated)

Committer:: pehrhovey
Date:: Wed Mar 17 03:17:38 2010 +0000
Revision:: 0:439354122597

Who changed what in which revision?

User	Revision	Line number	New contents of line
pehrhovey	0:439354122597	1	/*
pehrhovey	0:439354122597	2	* mbed_osc.cpp
pehrhovey	0:439354122597	3	*
pehrhovey	0:439354122597	4	* Created on: Mar 8, 2010
pehrhovey	0:439354122597	5	* Author: pehr
pehrhovey	0:439354122597	6	* The functions to control the mBed using OSC
pehrhovey	0:439354122597	7	* This includes setting up the UDP and OSC subsystem
pehrhovey	0:439354122597	8	* And registering handlers to control mBed I/O
pehrhovey	0:439354122597	9	*/
pehrhovey	0:439354122597	10	/*********************************************************************************
pehrhovey	0:439354122597	11
pehrhovey	0:439354122597	12	Copyright 2006-2009 MakingThings
pehrhovey	0:439354122597	13
pehrhovey	0:439354122597	14	Licensed under the Apache License,
pehrhovey	0:439354122597	15	Version 2.0 (the "License"); you may not use this file except in compliance
pehrhovey	0:439354122597	16	with the License. You may obtain a copy of the License at
pehrhovey	0:439354122597	17
pehrhovey	0:439354122597	18	http://www.apache.org/licenses/LICENSE-2.0
pehrhovey	0:439354122597	19
pehrhovey	0:439354122597	20	Unless required by applicable law or agreed to in writing, software distributed
pehrhovey	0:439354122597	21	under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
pehrhovey	0:439354122597	22	CONDITIONS OF ANY KIND, either express or implied. See the License for
pehrhovey	0:439354122597	23	the specific language governing permissions and limitations under the License.
pehrhovey	0:439354122597	24
pehrhovey	0:439354122597	25	*********************************************************************************/
pehrhovey	0:439354122597	26	#include "mbed_osc.h"
pehrhovey	0:439354122597	27
pehrhovey	0:439354122597	28
pehrhovey	0:439354122597	29	//Subsystems
pehrhovey	0:439354122597	30	#include "mbed_system_osc.h"
pehrhovey	0:439354122597	31	#include "mbed_io_osc.h"
pehrhovey	0:439354122597	32	//#include "mbed_analogin_osc.h"
pehrhovey	0:439354122597	33
pehrhovey	0:439354122597	34	#include <stdarg.h>
pehrhovey	0:439354122597	35
pehrhovey	0:439354122597	36	InterruptIn button(p5);
pehrhovey	0:439354122597	37
pehrhovey	0:439354122597	38	DigitalOut got_udp(LED1);
pehrhovey	0:439354122597	39	Timeout got_udp_TO;
pehrhovey	0:439354122597	40	void got_udp_off(){got_udp=0;}
pehrhovey	0:439354122597	41
pehrhovey	0:439354122597	42	DigitalOut sent_udp(LED4);
pehrhovey	0:439354122597	43	Timeout sent_udp_TO;
pehrhovey	0:439354122597	44
pehrhovey	0:439354122597	45	void sent_udp_off(){sent_udp=0;}
pehrhovey	0:439354122597	46
pehrhovey	0:439354122597	47
pehrhovey	0:439354122597	48	DigitalOut green_led(p14);
pehrhovey	0:439354122597	49	Timeout green_led_TO;
pehrhovey	0:439354122597	50	void green_led_off(){green_led=0;}
pehrhovey	0:439354122597	51	DigitalOut green_led2(p18);
pehrhovey	0:439354122597	52
pehrhovey	0:439354122597	53	void sent_udp_lights(){
pehrhovey	0:439354122597	54	if(green_led==0){
pehrhovey	0:439354122597	55	green_led = 1;
pehrhovey	0:439354122597	56	green_led_TO.attach(&green_led_off, 0.5);
pehrhovey	0:439354122597	57	}
pehrhovey	0:439354122597	58	if(sent_udp==0){
pehrhovey	0:439354122597	59	sent_udp = 1;
pehrhovey	0:439354122597	60	sent_udp_TO.attach(&sent_udp_off, 1.0);//auto turn-off
pehrhovey	0:439354122597	61	}
pehrhovey	0:439354122597	62	}
pehrhovey	0:439354122597	63
pehrhovey	0:439354122597	64	void got_udp_lights(){
pehrhovey	0:439354122597	65	if(got_udp == 0){
pehrhovey	0:439354122597	66	got_udp = 1; //LED
pehrhovey	0:439354122597	67	got_udp_TO.attach(&got_udp_off, 1.0);//auto turn-off
pehrhovey	0:439354122597	68	}
pehrhovey	0:439354122597	69	}
pehrhovey	0:439354122597	70
pehrhovey	0:439354122597	71	char scratch1[OSC_SCRATCH_SIZE]; //for building OSC messages
pehrhovey	0:439354122597	72	NetServer *osc_net;
pehrhovey	0:439354122597	73
pehrhovey	0:439354122597	74	struct udp_pcb *osc_pcb; //Bound to receiving port, listening for messages
pehrhovey	0:439354122597	75
pehrhovey	0:439354122597	76	int lights = 0; //flash lights when we send/receive packets?
pehrhovey	0:439354122597	77	int echo = 1; //echo received packets?
pehrhovey	0:439354122597	78
pehrhovey	0:439354122597	79	NetServer * getNetServer(){ //get the netserver to do things like get hostname
pehrhovey	0:439354122597	80	return osc_net;
pehrhovey	0:439354122597	81	}
pehrhovey	0:439354122597	82	char * getScratch(){
pehrhovey	0:439354122597	83	return scratch1;
pehrhovey	0:439354122597	84	}
pehrhovey	0:439354122597	85	struct udp_pcb * getUdpPcb(){
pehrhovey	0:439354122597	86	return osc_pcb;
pehrhovey	0:439354122597	87	}
pehrhovey	0:439354122597	88
pehrhovey	0:439354122597	89	/*UDP recv callback /
pehrhovey	0:439354122597	90
pehrhovey	0:439354122597	91	void udp_recv_callback(void arg, struct udp_pcb upcb, struct pbuf p, struct ip_addr addr, u16_t port)
pehrhovey	0:439354122597	92	{
pehrhovey	0:439354122597	93	LWIP_UNUSED_ARG(arg);
pehrhovey	0:439354122597	94	// printf("Received UDP Packet on port %d\r\n",port);
pehrhovey	0:439354122597	95
pehrhovey	0:439354122597	96	if(lights)
pehrhovey	0:439354122597	97	got_udp_lights();
pehrhovey	0:439354122597	98	/* if packet is valid */
pehrhovey	0:439354122597	99	if (p != NULL) {
pehrhovey	0:439354122597	100	int length = (int)p->len;
pehrhovey	0:439354122597	101
pehrhovey	0:439354122597	102	// printf("UDP Packet Received! Payload:\r\n");
pehrhovey	0:439354122597	103	// printf("-- %s -- length: %d\r\n",static_cast<char *>(p->payload),length);
pehrhovey	0:439354122597	104
pehrhovey	0:439354122597	105	char message = (char )p->payload;
pehrhovey	0:439354122597	106
pehrhovey	0:439354122597	107	if(echo && *message!= '/'){ //Echo if its not OSC
pehrhovey	0:439354122597	108	err_t code = udp_sendto(upcb, p, IP_ADDR_BROADCAST, UDP_BROADCAST_PORT); //send it back to port 5555
pehrhovey	0:439354122597	109	printf("Echo'd non-OSC packet, result code is %d\r\n",code);
pehrhovey	0:439354122597	110	if(lights)
pehrhovey	0:439354122597	111	sent_udp_lights();
pehrhovey	0:439354122597	112	}
pehrhovey	0:439354122597	113
pehrhovey	0:439354122597	114	//Do something based on the packet...
pehrhovey	0:439354122597	115
pehrhovey	0:439354122597	116	OscChannel *ch = Osc_GetChannel(OSC_CHANNEL_UDP);
pehrhovey	0:439354122597	117
pehrhovey	0:439354122597	118	memcpy(ch->incoming, message,length);
pehrhovey	0:439354122597	119	//Process packet
pehrhovey	0:439354122597	120
pehrhovey	0:439354122597	121	Osc_SetReplyAddress( OSC_CHANNEL_UDP, addr );
pehrhovey	0:439354122597	122	//this would send it back on the same port but we may not be listening on that port
pehrhovey	0:439354122597	123	// Osc_SetReplyPort( OSC_CHANNEL_UDP, port );
pehrhovey	0:439354122597	124	Osc_SetReplyPort( OSC_CHANNEL_UDP, UDP_BROADCAST_PORT ); //this never changes
pehrhovey	0:439354122597	125	Osc_ReceivePacket( OSC_CHANNEL_UDP, ch->incoming, length );
pehrhovey	0:439354122597	126
pehrhovey	0:439354122597	127	/* must free the pbuf */
pehrhovey	0:439354122597	128	pbuf_free(p);
pehrhovey	0:439354122597	129
pehrhovey	0:439354122597	130	}
pehrhovey	0:439354122597	131	}
pehrhovey	0:439354122597	132
pehrhovey	0:439354122597	133	void osc_sendIPBroadcast(){
pehrhovey	0:439354122597	134
pehrhovey	0:439354122597	135	//broadcast IP and the port we are listening on
pehrhovey	0:439354122597	136
pehrhovey	0:439354122597	137	//Make sure it goes to broadcast
pehrhovey	0:439354122597	138
pehrhovey	0:439354122597	139	Osc_SetReplyAddress( OSC_CHANNEL_UDP, IP_ADDR_BROADCAST );
pehrhovey	0:439354122597	140	Osc_SetReplyPort( OSC_CHANNEL_UDP, UDP_BROADCAST_PORT );
pehrhovey	0:439354122597	141
pehrhovey	0:439354122597	142	//Ensure that the property numbers have not changed
pehrhovey	0:439354122597	143	SystemOsc_PropertyGet( 3, OSC_CHANNEL_UDP ); // /system/ipinfo
pehrhovey	0:439354122597	144	Osc_SendPacket(OSC_CHANNEL_UDP); //have to manually send since we didnt go thru normal packet receiving
pehrhovey	0:439354122597	145	//printf("Sent /system/ipinfo msg to broadcast IP and port\r\n");
pehrhovey	0:439354122597	146
pehrhovey	0:439354122597	147	if(lights)
pehrhovey	0:439354122597	148	sent_udp_lights();
pehrhovey	0:439354122597	149	}
pehrhovey	0:439354122597	150
pehrhovey	0:439354122597	151	/*
pehrhovey	0:439354122597	152	* Initialize Mbed OSC
pehrhovey	0:439354122597	153	* -Set up network interface
pehrhovey	0:439354122597	154	* -Register UDP receive callback
pehrhovey	0:439354122597	155	* -Set up OSC subsystem to handle received messages
pehrhovey	0:439354122597	156	*/
pehrhovey	0:439354122597	157	int osc_init(){
pehrhovey	0:439354122597	158	printf("Initializing Network Interface with DHCP\r\n");
pehrhovey	0:439354122597	159
pehrhovey	0:439354122597	160	/*Initialize NetServer which gets us our DHCP address and
pehrhovey	0:439354122597	161	gets the network interface ready
pehrhovey	0:439354122597	162	and set up UDP
pehrhovey	0:439354122597	163	*/
pehrhovey	0:439354122597	164	osc_net = NetServer::ready();
pehrhovey	0:439354122597	165	//Initialize UDP
pehrhovey	0:439354122597	166	osc_pcb = udp_new();
pehrhovey	0:439354122597	167
pehrhovey	0:439354122597	168	if (osc_pcb != NULL) {
pehrhovey	0:439354122597	169	/* we have to be allowed to send broadcast packets! */
pehrhovey	0:439354122597	170	osc_pcb->so_options \|= SOF_BROADCAST;
pehrhovey	0:439354122597	171	udp_bind(osc_pcb, IP_ADDR_ANY, UDP_RECV_PORT); //Receive from any IP address, on the specified port
pehrhovey	0:439354122597	172	udp_recv(osc_pcb,udp_recv_callback, NULL);
pehrhovey	0:439354122597	173	}else{
pehrhovey	0:439354122597	174	printf("Could not make UDP pcb\r\n");
pehrhovey	0:439354122597	175	return;
pehrhovey	0:439354122597	176	}
pehrhovey	0:439354122597	177
pehrhovey	0:439354122597	178	osc_net->setHostname("chapala");
pehrhovey	0:439354122597	179	printf("Network Interface Initialized\r\n");
pehrhovey	0:439354122597	180
pehrhovey	0:439354122597	181	//Now set up OSC system
pehrhovey	0:439354122597	182
pehrhovey	0:439354122597	183	//Configure OSC UDP Channel
pehrhovey	0:439354122597	184	Osc_SystemInit(osc_pcb);
pehrhovey	0:439354122597	185
pehrhovey	0:439354122597	186	button.rise(&osc_sendIPBroadcast); //Callback to broadcast the IP and Port that it is listening on
pehrhovey	0:439354122597	187
pehrhovey	0:439354122597	188	//Register handlers for mBed control stuff
pehrhovey	0:439354122597	189
pehrhovey	0:439354122597	190	//SystemOsc subsystem -- get system info like IP address
pehrhovey	0:439354122597	191
pehrhovey	0:439354122597	192	int reg1 = Osc_RegisterSubsystem( SystemOsc_GetName(), SystemOsc_ReceiveMessage, NULL );
pehrhovey	0:439354122597	193	printf("Registered OscSystem, result is %d \r\n",reg1);
pehrhovey	0:439354122597	194
pehrhovey	0:439354122597	195	//IoOsc subsystem - get/set digital I/O pins
pehrhovey	0:439354122597	196	int reg2 = Osc_RegisterSubsystem( IoOsc_GetName(), IoOsc_ReceiveMessage, NULL );
pehrhovey	0:439354122597	197	printf("Registered IoSystem, result is %d \r\n",reg2);
pehrhovey	0:439354122597	198
pehrhovey	0:439354122597	199
pehrhovey	0:439354122597	200	//LedOsc subsystem - get/set onboard LED
pehrhovey	0:439354122597	201	int reg3 = Osc_RegisterSubsystem(LedOsc_GetName(), LedOsc_ReceiveMessage, NULL );
pehrhovey	0:439354122597	202	printf("Registered LedSystem, result is %d \r\n",reg3);
pehrhovey	0:439354122597	203
pehrhovey	0:439354122597	204	//AnalogInOsc subsystem - read analog inputs
pehrhovey	0:439354122597	205	// int reg4 = Osc_RegisterSubsystem(AnalogInOsc_GetName(),AnalogInOsc_ReceiveMessage, NULL );
pehrhovey	0:439354122597	206	// printf("Registered AnalogInSystem, result is %d \r\n",reg4);
pehrhovey	0:439354122597	207
pehrhovey	0:439354122597	208	//Broadcast the IP for anyone that is listening on the right port
pehrhovey	0:439354122597	209	printf("Broadcasting IP on port %d\r\n",UDP_BROADCAST_PORT);
pehrhovey	0:439354122597	210	osc_sendIPBroadcast();
pehrhovey	0:439354122597	211	}
pehrhovey	0:439354122597	212
pehrhovey	0:439354122597	213	/* Poll netserver for received messages
pehrhovey	0:439354122597	214	* Must be called during main while(1) loop, very fast
pehrhovey	0:439354122597	215	*/
pehrhovey	0:439354122597	216	void osc_poll(){
pehrhovey	0:439354122597	217	osc_net->poll();
pehrhovey	0:439354122597	218	}
pehrhovey	0:439354122597	219
pehrhovey	0:439354122597	220

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	17 Mar 2010
Imports:	79
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	1

mbed_osc.cpp@0:439354122597, 2010-03-17 (annotated)

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