我有 arduino uno + wifishield，如果无法连接到 Bluemix。它给出了这个错误：“来自 194.228.11.222 的关闭连接。该操作未经授权。”
知道为什么连接会被踢掉吗？什么操作没有授权？
感谢您的任何想法；）
======
这是代码：
#include <SPI.h>
#include <Ethernet.h>
#include <WiFi.h>
#include <WifiIPStack.h>
#include <IPStack.h>
#include <Countdown.h>
#include <MQTTClient.h>
#define MQTT_MAX_PACKET_SIZE 100
#define SIZE 100
#define MQTT_PORT 1883
#define PUBLISH_TOPIC "iot-2/evt/status/fmt/json"
#define SUBSCRIBE_TOPIC "iot-2/cmd/+/fmt/json"
#define USERID "use-token-auth"
#define CLIENT_ID "d:6735ra:hlinoponie:petasek"
#define MS_PROXY "6735ra.messaging.internetofthings.ibmcloud.com"
#define AUTHTOKEN “xxxxx”
byte mac[] = { 0x90, 0xA2, 0xDA, 0x0F, 0xD6, 0x8F };
WiFiClient c;
IPStack ipstack(c);
MQTT::Client<IPStack, Countdown, 100, 1> client = MQTT::Client<IPStack, Countdown, 100, 1>(ipstack);
String deviceEvent;
char ssid[] = “XXXXX”; // your network SSID (name)
char pass[] = “XXXXX”; // your network password
int status = WL_IDLE_STATUS; // the Wifi radio's status
void setup() {
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("WiFi shield not present");
// don't continue:
while (true);
}
String fv = WiFi.firmwareVersion();
if ( fv != "1.1.0" )
Serial.println("Please upgrade the firmware");
// attempt to connect to Wifi network:
while ( status != WL_CONNECTED) {
Serial.print("Attempting to connect to WPA SSID: ");
Serial.println(ssid);
// Connect to WPA/WPA2 network:
status = WiFi.begin(ssid, pass);
// wait 5 seconds for connection:
delay(5000);
}
// you're connected now, so print out the data:
Serial.print("Hooray!!! You're connected to the network\n");
}
void loop() {
float tep = mojeDHT.readTemperature();
float vlh = mojeDHT.readHumidity();
int rc = -1;
if (!client.isConnected()) {
Serial.println("Connecting to Watson IoT Foundation ...");
rc = ipstack.connect((char*)MS_PROXY, MQTT_PORT);
MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
data.MQTTVersion = 3;
data.clientID.cstring = (char*)CLIENT_ID;
data.username.cstring = (char*)USERID;
data.password.cstring = (char*)AUTHTOKEN;
data.keepAliveInterval = 60;
rc = -1;
while ((rc = client.connect(data)) != 0) {
Serial.println("rc=");
Serial.println(rc);
delay(2000);
}
Serial.println("Connected successfully\n");
// Serial.println("Temperature(in C)\tDevice Event (JSON)");
Serial.println("____________________________________________________________________________");
}
Serial.println("\n");
MQTT::Message message;
message.qos = MQTT::QOS0;
message.retained = false;
deviceEvent = String("{\"d\":{\"myName\":\"Arduino Uno\",\"temperature\":");
char buffer[60];
// convert double to string
dtostrf(getTemp(),1,2, buffer);
deviceEvent += buffer;
deviceEvent += "}}";
Serial.print("\t");
Serial.print(buffer);
Serial.print("\t\t");
deviceEvent.toCharArray(buffer, 60);
Serial.println(buffer);
message.payload = buffer;
message.payloadlen = strlen(buffer);
rc = client.publish(PUBLISH_TOPIC, message);
if (rc != 0) {
Serial.print("return code from publish was ");
Serial.println(rc);
}
client.yield(5000);
}
/*
This function is reproduced as is from Arduino site => http://playground.arduino.cc/Main/InternalTemperatureSensor
*/
double getTemp(void) {
unsigned int wADC;
double t;
ADMUX = (_BV(REFS1) | _BV(REFS0) | _BV(MUX3));
ADCSRA |= _BV(ADEN); // enable the ADC
delay(20); // wait for voltages to become stable.
ADCSRA |= _BV(ADSC); // Start the ADC
// Detect end-of-conversion
while (bit_is_set(ADCSRA,ADSC));
// Reading register "ADCW" takes care of how to read ADCL and ADCH.
wADC = ADCW;
// The offset of 324.31 could be wrong. It is just an indication.
t = (wADC - 324.31 ) / 1.22;
// The returned temperature is in degrees Celcius.
return (t);
}