this is a sample for mbed(LPC1768)

ennoTest2.cpp

Committer:
1
Date:
2015-11-19
Revision:
0:3163adfd2cf1

File content as of revision 0:3163adfd2cf1:

// Do not remove the include below
#include "ennoTest2.h"
#include "MQTTEthernet.h"
#include "MQTTClient.h"
#include <pb_decode.h>
#include <sitewhere.h>
#include <sitewhere.pb.h>

#define MQTTCLIENT_QOS2 1
int arrivedcount = 0;
bool registered = false;

DigitalOut led1(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);
DigitalOut led4(LED4);

void messageArrived(MQTT::MessageData& md)
{
	uint8_t buffer[512];
    MQTT::Message &message = md.message;
    printf("Message arrived: qos %d, retained %d, dup %d, packetid %d\n", message.qos, message.retained, message.dup, message.id);
    printf("Payload %.*s\n", message.payloadlen, (char*)message.payload);
    ++arrivedcount;
/*
    buffer = message.payload;
    Device_Header header;
    pb_istream_t stream = pb_istream_from_buffer(buffer, message.payloadlen);

    // Read header to find what type of command follows.
      if (pb_decode_delimited(&stream, Device_Header_fields, &header)) {
        // Handle a registration acknowledgement.
        if (header.command == Device_Command_REGISTER_ACK) {
          Device_RegistrationAck ack;
          if (pb_decode_delimited(&stream, Device_RegistrationAck_fields, &ack)) {
            if (ack.state == Device_RegistrationAckState_NEW_REGISTRATION) {
              printf("Registered new device.");
              registered = true;
            } else if (ack.state == Device_RegistrationAckState_ALREADY_REGISTERED) {
              printf("Device was already registered.");
              registered = true;
            } else if (ack.state == Device_RegistrationAckState_REGISTRATION_ERROR) {
              printf("Error registering device.");
            }
          }
        }
      } else {
        printf("Unable to decode system command.");
      }
    */
}


int main(int argc, char* argv[])
{
    MQTTEthernet ipstack = MQTTEthernet();
    float version = 0.5;
    char* topic = "SiteWhere/input/protobuf";
    char* hardwareId = "enno-device-mbed-id-1";
    char* specificationToken = "9556b504-52cc-4194-89c0-f301a782b286";
    char* system = "SiteWhere/system/mbed-test-A";
    char* hostname = "139.217.10.99";//sitewhere.chinacloudapp.cn:1883
    int port = 1883;

    led1=1;led2=1;led3=1;led4=1;
    wait(0.5);
    led1=!led1;led2=!led2;led3=!led3;led4=!led4;
	wait(0.5);
	led1=!led1;led2=!led2;led3=!led3;led4=!led4;

    printf("HelloMQTT: version is %f\n", version);
    MQTT::Client<MQTTEthernet, Countdown> client = MQTT::Client<MQTTEthernet, Countdown>(ipstack);
    printf("Connecting to %s:%d\n", hostname, port);
    int rc = ipstack.connect(hostname, port);

    if (rc != 0){							//tcp connect error!
        printf("rc from TCP connect is %d\n", rc);
       }
    if (rc == 0){                            //tcp connected!
    	led1=!led1;wait(1);led1=!led1;wait(1);led1=!led1;

		 MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
		 data.MQTTVersion = 3;
		 data.clientID.cstring = "mbed-sample";
		 data.username.cstring = NULL;
		 data.password.cstring = NULL;
		 if ((rc = client.connect(data)) != 0)
			 printf("rc from MQTT connect is %d\n", rc);
		 if (rc == 0){						//MQTT Client connected!
			 led2=!led2;wait(1);led2=!led2;wait(1);led2=!led2;

			 if ((rc = client.subscribe(system, MQTT::QOS2, messageArrived)) != 0)
				 printf("rc from MQTT subscribe is %d\n", rc);
			 if(rc == 0){						//subscribe successed!
				 led3=!led3;wait(1);led3=!led3;wait(1);led3=!led3;

				 MQTT::Message message;

			 // QoS 0
				 char buf[100];
				 //unsigned char buffer[512];
				 uint8_t buffer[512];                                // Caution: unsigned char cause an error!!!
				 unsigned int len = 0;
				 sprintf(buf, "Hello World!  QoS 0 message from app version %f\n", version);
				 message.qos = MQTT::QOS0;
				 message.retained = false;
				 message.dup = false;
				// message.payload = (void*)buf;
				// message.payloadlen = strlen(buf)+1;                //??
				 /*********** serialization ************/
				 len = sw_register(hardwareId, specificationToken, buffer, 512,NULL);
				 message.payload = buffer;
				 message.payloadlen = len;
				 /*************************************/
				 rc = client.publish(topic, message);
		//		 while (arrivedcount < 1)
		//			 client.yield(100);



 // QoS 1
				 /*********** serialization ************/
				// len = sw_alert(hardwareId, "enno.info","mbed is alive", NULL, buffer, 512, NULL);
				 len = sw_location(hardwareId, 27.59, 86.55, 8844.43, 0,buffer, 512, NULL);
				 message.payload = buffer;
				 message.payloadlen = len;
				 sprintf(buf, "Hello World!  QoS 1 message from app version %f\n", version);
				 message.qos = MQTT::QOS1;

				 while (0 == rc) {
				         client.yield(1000);
				         //sleep();
				         //wait(0.5);
				         client.publish(topic, message);
				         printf("Location updated.\n");
				         led4=!led4;

				     }
				 return 0;
			 }
		 }
    }
}
/*
    // QoS 2
    sprintf(buf, "Hello World!  QoS 2 message from app version %f\n", version);
    message.qos = MQTT::QOS2;
    message.payloadlen = strlen(buf)+1;
    rc = client.publish(topic, message);
    while (arrivedcount < 3)
        client.yield(100);
*/
/*
 if ((rc = client.unsubscribe(topic)) != 0)
		 printf("rc from unsubscribe was %d\n", rc);

	 if ((rc = client.disconnect()) != 0)
		 printf("rc from disconnect was %d\n", rc);

	 ipstack.disconnect();

	 printf("Version %.2f: finish %d msgs\n", version, arrivedcount); */



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