// method to load telemetry stream data
// returns TelemetryModel which maps onto json data by properties
public static async Task <BlueTelemetryModel> LoadTelemetry(string base_url, bool uia = false)
{
// start with empty string for url
string url = "";
// decide whether to get recent suit data or dcu/uia recent data
if (uia)
{
// set api url to obtain recent DCU/UIA data
//url = base_url + "api/simulation/uiastate";
url = $"{ base_url }api/simulation/uiastate";
Console.WriteLine("url: " + url);
}
else
{
// set api url to obtain recent suit data
url = base_url + "api/simulation/state";
//url = $"{ base_url }api/simulation/state";
//Console.WriteLine("url: " + url);
}
// new request using a single open api client and gets this as response
using (HttpResponseMessage res = await Data.api.GetAsync(url))
{
// if response is successful, read back data
if (res.IsSuccessStatusCode)
{
//
//TelemetryModel model = JsonConvert.DeserializeObject<TelemetryModel>(res);
// create new object for telemetry data
// takes data into as json and maps onto telemetry model, ignoring properties that don't match
BlueTelemetryModel telemetry = await res.Content.ReadAsAsync <BlueTelemetryModel>();
// add each entry to list for future testing
telemetryData.Add(telemetry);
// return the mapped data
return(telemetry);
}
// else, unsuccessful response
else
{
// throw an exception (with reason) if response isn't succesful
throw new Exception(res.ReasonPhrase);
}
// close/dispose of port when done to avoid bad memory management
}
}
// call this method to post dummy data to server
public static void TestVitalsPost()
{
//
//PortName = "COM7"; // PortNameMac = "dev/cu.HC-05-DevB";
//PortName = "dev/cu.HC-05-DevB" // Set in Windows Settings->Bluetooth->More Bluetooth Settings->COM Ports (OUTGOING)
// create a new serial port listener with given baud rate on given windows port
SerialPort serialPort = new SerialPort
{
BaudRate = 9600,
PortName = "/dev/cu.DSDTECHHC-05-DevB" // Set in Windows Settings->Bluetooth->More Bluetooth Settings->COM Ports (OUTGOING)
//PortName = "dev/cu.HC-05-DevB" // Set in Windows Settings->Bluetooth->More Bluetooth Settings->COM Ports (OUTGOING)
};
serialPort.Open();
//
double counter = 60.0;
// post 4 random vital measurements to server
while (counter < 64.0)
{
// send to arduino through bluetooth comm
//serialPort.WriteLine("PC counter: " + (counter++));
// POST to server
var postVitals = new BlueTelemetryModel
{
heartrate = counter,
oxygen = 60.0,
temperature = 70.0
};
_ = PostJsonHttpClient(postVitals);
// update ctr
counter++;
// check serial port connection and buffer for data every second
Thread.Sleep(1000);
}
}
// send vitals as a json to mongoDB
// from: https://www.stevejgordon.co.uk/sending-and-receiving-json-using-httpclient-with-system-net-http-json
public static async Task PostJsonHttpClient(BlueTelemetryModel postVitals)
{
// get the initialized client
HttpClient httpClient = Data.api;
//
//BlueTelemetryModel postVitals = new BlueTelemetryModel();
// api post request url
string url = "http://127.0.0.1:3002/api/vital";
//string url = "http://127.0.0.1:3002/api/temp";
//string url = "http://127.0.0.1:3002/api/oxygen";
//string url = "http://127.0.0.1:3002/api/heartrate";
Console.WriteLine("BLUETOOTH POST REQUEST: " + url);
// send vital json and wait for response from server
var postResponse = await httpClient.PostAsJsonAsync(url, postVitals);
//
postResponse.EnsureSuccessStatusCode();
}
//
//public static SerialPort serialPort = new SerialPort();
//public SerialPort serialPort { get; set; }
//public int baudrate { get; set; }
//public string portname { get; set; }
//public bool connected { get; set; }
// constructor initializes serial comm and reads (as own thread) until broken
public Bluetooth()
{
//
//PortName = "COM7"; // PortNameMac = "dev/cu.HC-05-DevB";
//PortName = "dev/cu.HC-05-DevB" // Set in Windows Settings->Bluetooth->More Bluetooth Settings->COM Ports (OUTGOING)
// create a new serial port listener with given baud rate on given windows port
SerialPort serialPort = new SerialPort
{
BaudRate = 9600,
PortName = "COM5"
//PortName = "/dev/cu.DSDTECHHC-05-DevB" // Set in Windows Settings->Bluetooth->More Bluetooth Settings->COM Ports (OUTGOING)
//PortName = "dev/cu.HC-05-DevB" // Set in Windows Settings->Bluetooth->More Bluetooth Settings->COM Ports (OUTGOING)
};
serialPort.Open();
//
//int counter = 0;
// save serial data
//double data = 0.0;
var data = "0.0";
//BlueTelemetryModel postVitals = new BlueTelemetryModel();
BlueTelemetryModel postVitals = new BlueTelemetryModel
{
heartrate = Convert.ToDouble(data),
oxygen = Convert.ToDouble(data),
temperature = Convert.ToDouble(data)
};
//_ = PostJsonHttpClient(postVitals);
// while a serial port connection exists
while (serialPort.IsOpen)
{
// if serial port contains data, extract
while (serialPort.BytesToRead > 0)
{
//Console.Write(Convert.ToChar(serialPort.ReadChar()));
//Console.Write(serialPort.ReadChar());
//Console.Write(serialPort.ReadExisting());
// save data from serial port into variable and convert to string in format of double
data = serialPort.ReadExisting() + ".0";
//data = Convert.ToChar(serialPort.ReadChar());
//data = Convert.ToChar(serialPort.ReadChar());
//Console.Write(Convert.ToChar(serialPort.ReadLine()));
//Console.Write(Convert.ToChar(serialPort.ReadLine()));
//Console.WriteLine((double) data);
//Console.WriteLine(data);
//postVitals = { BlueTelemetryModel.temperature = data };
postVitals.temperature = Convert.ToDouble(data);
Console.WriteLine(postVitals.temperature);
_ = PostJsonHttpClient(postVitals);
}
// send to arduino through bluetooth comm
//serialPort.WriteLine("PC counter: " + (counter++));
// update ctr
//counter++;
// check serial port connection and buffer for data every second
Thread.Sleep(1000);
// if serial port closes, break loop
}
}
