static void Main()
{
led = GpioController.GetDefault().OpenPin(FEZ.GpioPin.Led1);
led.SetDriveMode(GpioPinDriveMode.Output);
string host = "ghi-test-iot.azure-devices.net"; //"192.168.1.152" "ghi-test-iot.azure-devices.net" "a1uyw4e5ps7wof.iot.us-east-2.amazonaws.com"
int port = 8883; // 1883 8883
var serial = SerialDevice.FromId(FEZ.UartPort.Usart1);
serial.BaudRate = 115200;
serial.ReadTimeout = TimeSpan.Zero;
wifi = new AMW007Interface(serial);
mqtt = new MQTT();
wifi.Run();
//wifi.SetTlsServerRootCertificate("azure.pem"); //aws.pem
mqtt.Connect(wifi, host, port, clientID, 60, true);
mqtt.Publish("devices/FEZ/messages/events/", "HELLO!"); //devices/FEZ/messages/events/ $aws/things/FEZ/shadow/update
mqtt.Subscribe("devices/FEZ/messages/devicebound/#", "test"); // devices/FEZ/messages/devicebound/# $aws/things/FEZ/shadow/update
Thread reader = new Thread(ReadStream);
reader.Start();
while (true)
{
wifi.ReadSocket(0, 500);
Thread.Sleep(200);
}
}
public void Connect(AMW007Interface wifi, string host, int port, string clientID, int keepAlive, bool cleanSession, string username = null, string password = null)
{
int fixedHeaderSize = 0;
int varHeaderSize = 0;
int payloadSize = 0;
int remainingLength = 0;
byte[] MQTTbuffer;
int index = 0;
this.wifi = wifi;
this.clientID = clientID;
wifi.OpenSocket(host, port);
Thread reader = new Thread(ReadStream);
reader.Start();
byte[] clientIdUtf8 = Encoding.UTF8.GetBytes(clientID);
byte[] usernameUtf8 = ((username != null) && (username.Length > 0)) ? Encoding.UTF8.GetBytes(username) : null;
byte[] passwordUtf8 = ((password != null) && (password.Length > 0)) ? Encoding.UTF8.GetBytes(password) : null;
varHeaderSize += (Constants.PROTOCOL_NAME_LEN_SIZE + Constants.PROTOCOL_NAME_SIZE);
varHeaderSize += Constants.PROTOCOL_VERSION_SIZE;
varHeaderSize += Constants.CONNECT_FLAGS_SIZE;
varHeaderSize += Constants.KEEP_ALIVE_TIME_SIZE;
payloadSize += clientIdUtf8.Length + 2;
payloadSize += (usernameUtf8 != null) ? (usernameUtf8.Length + 2) : 0;
payloadSize += (passwordUtf8 != null) ? (passwordUtf8.Length + 2) : 0;
remainingLength += (varHeaderSize + payloadSize);
fixedHeaderSize = 1;
int temp = remainingLength;
// increase fixed header size based on remaining length
// (each remaining length byte can encode until 128)
do
{
fixedHeaderSize++;
temp = temp / 128;
} while (temp > 0);
MQTTbuffer = new byte[fixedHeaderSize + varHeaderSize + payloadSize];
MQTTbuffer[index++] = (Constants.CONNECT << Constants.TYPE_OFFSET) | Constants.CONNECT_FLAG_BITS;
index = this.encodeRemainingLength(remainingLength, MQTTbuffer, index);
MQTTbuffer[index++] = 0; // MSB protocol name size
MQTTbuffer[index++] = Constants.PROTOCOL_NAME_SIZE; // LSB protocol name size
Array.Copy(Encoding.UTF8.GetBytes(Constants.PROTOCOL_NAME), 0, MQTTbuffer, index, Constants.PROTOCOL_NAME_SIZE);
index += Constants.PROTOCOL_NAME_SIZE;
MQTTbuffer[index++] = Constants.PROTOCOL_VERSION_V3_1_1;
byte connectFlags = 0x00;
connectFlags |= (usernameUtf8 != null) ? (byte)(1 << Constants.USERNAME_FLAG_OFFSET) : (byte)0x00;
connectFlags |= (passwordUtf8 != null) ? (byte)(1 << Constants.PASSWORD_FLAG_OFFSET) : (byte)0x00;
connectFlags |= (cleanSession) ? (byte)(1 << Constants.CLEAN_SESSION_FLAG_OFFSET) : (byte)0x00;
MQTTbuffer[index++] = connectFlags;
MQTTbuffer[index++] = (byte)(keepAlive / 256); // MSB
MQTTbuffer[index++] = (byte)(keepAlive % 256); // LSB
MQTTbuffer[index++] = (byte)((clientIdUtf8.Length >> 8) & 0x00FF); // MSB
MQTTbuffer[index++] = (byte)(clientIdUtf8.Length & 0x00FF); // LSB
Array.Copy(clientIdUtf8, 0, MQTTbuffer, index, clientIdUtf8.Length);
index += clientIdUtf8.Length;
if (usernameUtf8 != null)
{
MQTTbuffer[index++] = (byte)(usernameUtf8.Length / 256); // MSB
MQTTbuffer[index++] = (byte)(usernameUtf8.Length % 256); // LSB
Array.Copy(usernameUtf8, 0, MQTTbuffer, index, usernameUtf8.Length);
index += usernameUtf8.Length;
}
if (passwordUtf8 != null)
{
MQTTbuffer[index++] = (byte)(passwordUtf8.Length / 256); // MSB
MQTTbuffer[index++] = (byte)(passwordUtf8.Length % 256); // LSB
Array.Copy(passwordUtf8, 0, MQTTbuffer, index, passwordUtf8.Length);
index += passwordUtf8.Length;
}
int count = 0;
do
{
wifi.WriteSocket(0, MQTTbuffer, MQTTbuffer.Length);
Thread.Sleep(500);
wifi.ReadSocket(0, 1000);
count++;
if (count > 5)
{
throw new ArgumentOutOfRangeException("Can't connect"); //TODO Add exceptions class
}
} while (connack == false);
// TODO implement ConnackHandler()
}
