/// <summary>Build the GATT service data model</summary>
/// <param name="service">The OS GATT service object</param>
/// <param name="deviceDataModel">The portable GATT session data model</param>
/// <returns>The async task</returns>
public async Task BuildServiceDataModel(GattDeviceService service, BluetoothLEDeviceInfo deviceDataModel)
{
this.log.Info("BuildServiceDataModel", () => string.Format("Gatt Service:{0} Uid:{1}",
BLE_DisplayHelpers.GetServiceName(service), service.Uuid.ToString()));
// New service data model to add to device info
BLE_ServiceDataModel serviceDataModel = new BLE_ServiceDataModel()
{
Characteristics = new Dictionary <string, BLE_CharacteristicDataModel>(),
AttributeHandle = service.AttributeHandle,
DeviceId = deviceDataModel.Id,
DisplayName = BLE_DisplayHelpers.GetServiceName(service),
Uuid = service.Uuid,
SharingMode = (BLE_SharingMode)service.SharingMode,
};
if (service.DeviceAccessInformation != null)
{
serviceDataModel.DeviceAccess = (BLE_DeviceAccessStatus)service.DeviceAccessInformation.CurrentStatus;
}
this.BuildSessionDataModel(service.Session, serviceDataModel.Session);
// TODO
//service.ParentServices
// Get the characteristics for the service
GattCharacteristicsResult characteristics = await service.GetCharacteristicsAsync();
if (characteristics.Status == GattCommunicationStatus.Success)
{
if (characteristics.Characteristics != null)
{
if (characteristics.Characteristics.Count > 0)
{
foreach (GattCharacteristic ch in characteristics.Characteristics)
{
await this.BuildCharacteristicDataModel(ch, serviceDataModel);
}
}
else
{
this.log.Info("ConnectToDevice", () => string.Format("No characteristics"));
}
}
}
else
{
this.log.Error(9999, "HarvestDeviceInfo", () => string.Format("Failed to get Characteristics result {0}", characteristics.Status.ToString()));
}
// Add the service data model to the device info data model
deviceDataModel.Services.Add(serviceDataModel.Uuid.ToString(), serviceDataModel);
}
private void Ch_BatteryLevelValueChanged(GattCharacteristic sender, GattValueChangedEventArgs args)
{
// TODO temp to read the changed value in the characteristic
//args.CharacteristicValue.Length;
byte[] b = args.CharacteristicValue.FromBufferToBytes();
// Will be length 1- value is Hex
byte uint8Data = b[0];
// My Arduino maps it 0-100
// TODO - must be hex between 0x00 - 0x64
//int level = Convert.ToInt32(uint8Data.ToString(), 16);
int level = Convert.ToInt32(uint8Data.ToString());
this.log.Info("Ch_ValueChanged", () => string.Format(" Characteristic:{0} Value:0x{1} - {2}% Handle:{3}",
BLE_DisplayHelpers.GetCharacteristicName(sender),
uint8Data, level,
sender.AttributeHandle));
}
private async Task BuildCharacteristicDataModel(GattCharacteristic ch, BLE_ServiceDataModel service)
{
try {
BLE_CharacteristicDataModel characteristic = new BLE_CharacteristicDataModel();
characteristic.Uuid = ch.Uuid;
characteristic.UserDescription = ch.UserDescription;
characteristic.AttributeHandle = ch.AttributeHandle;
characteristic.Service = service;
characteristic.CharName = BLE_DisplayHelpers.GetCharacteristicName(ch);
characteristic.PropertiesFlags = ch.CharacteristicProperties.ToUInt().ToEnum <CharacteristicProperties>();
characteristic.ProtectionLevel = (BLE_ProtectionLevel)ch.ProtectionLevel;
characteristic.PresentationFormats = this.BuildPresentationFormats(ch);
await this.BuildDescriptors(ch, characteristic);
service.Characteristics.Add(characteristic.Uuid.ToString(), characteristic);
}
catch (Exception e) {
this.log.Exception(9999, "Failed during build of characteristic", e);
}
}
private async Task BuildDescriptors(GattCharacteristic ch, BLE_CharacteristicDataModel dataModel)
{
dataModel.Descriptors = new Dictionary <string, BLE_DescriptorDataModel>();
GattDescriptorsResult descriptors = await ch.GetDescriptorsAsync();
if (descriptors.Status == GattCommunicationStatus.Success)
{
if (descriptors.Descriptors.Count > 0)
{
foreach (GattDescriptor desc in descriptors.Descriptors)
{
GattReadResult r = await desc.ReadValueAsync();
if (r.Status == GattCommunicationStatus.Success)
{
// New characteristic data model to add to service
BLE_DescriptorDataModel descDataModel = new BLE_DescriptorDataModel()
{
Uuid = desc.Uuid,
AttributeHandle = desc.AttributeHandle,
ProtectionLevel = (BLE_ProtectionLevel)desc.ProtectionLevel,
DisplayName = BLE_ParseHelpers.GetDescriptorValueAsString(desc.Uuid, r.Value.FromBufferToBytes())
};
dataModel.Descriptors.Add(descDataModel.Uuid.ToString(), descDataModel);
this.log.Info("ConnectToDevice", () => string.Format(" Descriptor:{0} Uid:{1} Value:{2}",
BLE_DisplayHelpers.GetDescriptorName(desc), desc.Uuid.ToString(), descDataModel.DisplayName));
}
;
}
}
}
else
{
this.log.Error(9999, "BuildDescriptors", () => string.Format("Get Descriptors result:{0}", descriptors.Status.ToString()));
}
}
private async Task DumpCharacteristic(GattCharacteristic ch)
{
try {
if (ch.CharacteristicProperties.HasFlag(GattCharacteristicProperties.Read))
{
GattReadResult readResult = await ch.ReadValueAsync();
if (readResult.Status == GattCommunicationStatus.Success)
{
//if (ch.CharacteristicProperties.HasFlag(GattCharacteristicProperties.Read)) {
byte[] b = readResult.Value.FromBufferToBytes();
switch (BLE_DisplayHelpers.GetCharacteristicEnum(ch))
{
case GattNativeCharacteristicUuid.String:
case GattNativeCharacteristicUuid.DeviceName:
case GattNativeCharacteristicUuid.ManufacturerNameString:
string strVal = Encoding.ASCII.GetString(b, 0, (int)readResult.Value.Length);
this.log.Info("DumpCharacteristic", () => string.Format(" Characteristic:{0} Value:{1} Handle:{2}",
BLE_DisplayHelpers.GetCharacteristicName(ch), strVal, ch.AttributeHandle));
break;
case GattNativeCharacteristicUuid.BatteryLevel:
#region Battery Level
// This works until we get another add existing again
// Setting it to notify so I can pick up the event
var c = await ch.WriteClientCharacteristicConfigurationDescriptorAsync(GattClientCharacteristicConfigurationDescriptorValue.Notify);
ch.ValueChanged += Ch_BatteryLevelValueChanged;
// Will be length 1- value is Hex
byte uint8Data = b[0];
// My Arduino maps it 0-100
// TODO - must be hex between 0x00 - 0x64
//int level = Convert.ToInt32(uint8Data.ToString(), 16);
int level = Convert.ToInt32(uint8Data.ToString());
this.log.Info("DumpCharacteristic", () => string.Format(" Characteristic:{0} Value:0x{1} - {2}% Handle:{3}",
BLE_DisplayHelpers.GetCharacteristicName(ch), uint8Data, level, ch.AttributeHandle));
#endregion
break;
case GattNativeCharacteristicUuid.PnPID:
#region PPnPID
// 7 bytes
//0x02,0x5E,0x04,0x17,0x08,0x31,0x01
// field1 - 1 byte uint8 source of Vendor ID
// field2 - 2 byte Uint16 - product vendor namespace
// field3 - 2 byte Uint16 - manufacturer ID
// field4 - 2 byte Uint16 - manufacturer version of product
StringBuilder sb = new StringBuilder();
sb
.Append("Vendor ID:").Append(b[0]).Append(",")
.Append("Vendor Namespace:").Append(BitConverter.ToInt16(b, 1)).Append(",")
.Append("Manufacturer ID:").Append(BitConverter.ToInt16(b, 3)).Append(",")
.Append("Manufacturer Namespace:").Append(BitConverter.ToInt16(b, 5));
this.log.Info("DumpCharacteristic", () => string.Format(" Characteristic:{0} Value:{1} Handle:{2}",
BLE_DisplayHelpers.GetCharacteristicName(ch), sb.ToString(), ch.AttributeHandle));
#endregion
break;
case GattNativeCharacteristicUuid.Appearance:
#region Appearance
this.log.Info("DumpCharacteristic", () => string.Format(" Characteristic:{0} Value:{1} Handle:{2}",
BLE_DisplayHelpers.GetCharacteristicName(ch), b.ToGattAppearanceEnum().ToString().CamelCaseToSpaces(), ch.AttributeHandle));
#endregion
break;
case GattNativeCharacteristicUuid.PeripheralPreferredConnectionParameters:
#region
//Peripheral Preferred Connection Parameters Value:0x14,0x00,0x24,0x00,0x04,0x00,0xC8,0x00 - 8 bytes
// 8 bytes in 4 uint16 fields
// 1. Minimum Connect interval 6-3200
// 2. Maximum Connect interval 6-3200
// 3. Slave latency 0-1000
// 4. Connection Supervisor Timeout Multiplier 10-3200
StringBuilder sb2 = new StringBuilder();
sb2
.Append("Min Connect Interval:").Append(BitConverter.ToInt16(b, 0)).Append(",")
.Append("Max Connect Interval:").Append(BitConverter.ToInt16(b, 2)).Append(",")
.Append("Slave Latency:").Append(BitConverter.ToInt16(b, 4)).Append(",")
.Append("Connect Supervisor Timout multiplier:").Append(BitConverter.ToInt16(b, 6));
this.log.Info("DumpCharacteristic", () => string.Format(" Characteristic:{0} Value:{1} Handle:{2}",
BLE_DisplayHelpers.GetCharacteristicName(ch), sb2.ToString(), ch.AttributeHandle));
#endregion
break;
default:
byte[] data = new byte[readResult.Value.Length];
Array.Copy(b, data, data.Length);
if (BLE_DisplayHelpers.GetCharacteristicName(ch) == "39320")
{
var xx = await ch.WriteClientCharacteristicConfigurationDescriptorAsync(GattClientCharacteristicConfigurationDescriptorValue.Notify);
ch.ValueChanged += Ch_ValueChangedSerialReturn;
}
this.log.Info("DumpCharacteristic", () => string.Format(
" Characteristic: ** NOT ENUMERATED ** {0} Value:{1} Length:{2} Handle:{3}",
BLE_DisplayHelpers.GetCharacteristicName(ch), data.ToFormatedByteString(), data.Length, ch.AttributeHandle));
break;
}
}
else
{
this.log.Info("ConnectToDevice", () => string.Format(" Characteristic:{0} Read FAILED result:{1} Enum:{2}",
BLE_DisplayHelpers.GetCharacteristicName(ch), readResult.Status, BLE_DisplayHelpers.GetCharacteristicEnum(ch)));
}
}
else if (ch.CharacteristicProperties.HasFlag(GattCharacteristicProperties.Write))
{
if (BLE_DisplayHelpers.GetCharacteristicName(ch) == "39319")
{
try {
//WrapErr.ToErrReport(9999, () => {
this.log.Info("LKDJFKLJSDFLK:JSDKLF", "GOT 39319 (output to device)");
// Test message
//using (var ms = new DataWriter()) {
// // do it this way when we have a multi byte block
// ms.WriteBytes(Encoding.ASCII.GetBytes("Blipo message\n\r"));
// var result = await ch.WriteValueAsync(ms.DetachBuffer());
//}
for (int ii = 0; ii < 5; ii++)
{
//byte[] bytes = Encoding.ASCII.GetBytes("Blipo message\n\r");
byte[] bytes = Encoding.ASCII.GetBytes("Blipo message being somewhat long and convaluted just to test the return of the entire thing\n\r");
int blockLimit = 20;
int count = bytes.Length / blockLimit;
int rest = (bytes.Length % blockLimit);
int lastIndex = 0;
for (int i = 0; i < count; i++)
{
lastIndex = i * blockLimit;
using (var ms = new DataWriter()) {
byte[] part = new byte[blockLimit];
Array.Copy(bytes, lastIndex, part, 0, part.Length);
this.log.Error(9191, part.ToFormatedByteString());
ms.WriteBytes(part);
var result = await ch.WriteValueAsync(ms.DetachBuffer());
}
}
if (lastIndex > 0)
{
if (lastIndex > 0)
{
lastIndex += blockLimit;
}
using (var ms = new DataWriter()) {
byte[] part = new byte[rest];
Array.Copy(bytes, lastIndex, part, 0, part.Length);
this.log.Error(9192, part.ToFormatedByteString());
ms.WriteBytes(part);
var result = await ch.WriteValueAsync(ms.DetachBuffer());
}
}
}
//for (int i = 0; i < bytes.Length; i++) {
// using (var ms = new DataWriter()) {
// ms.WriteByte(bytes[i]);
// var result = await ch.WriteValueAsync(ms.DetachBuffer());
// }
//}
//});
}
catch (Exception e) {
this.log.Exception(9999, "Fail on write to descriptor", e);
}
}
}
}
catch (Exception e) {
this.log.Exception(9999, "Failed during dump info", e);
}
}
private async Task ConnectToDevice(BluetoothLEDeviceInfo deviceInfo)
{
this.log.Info("ConnectToDevice", () => string.Format("Attempting connection to {0}: FromIdAsync({1})",
deviceInfo.Name, deviceInfo.Id));
try {
// https://github.com/microsoft/Windows-universal-samples/blob/master/Samples/BluetoothLE/cs/Scenario2_Client.xaml.cs
this.log.Info("ConnectToDevice", () => string.Format("--------------------------------------------------------------------"));
this.log.Info("ConnectToDevice", () => string.Format(" Param Device Info ID {0}", deviceInfo.Id));
this.currentDevice = await BluetoothLEDevice.FromIdAsync(deviceInfo.Id);
if (this.currentDevice == null)
{
this.log.Info("ConnectToDevice", "Connection failed");
}
else
{
this.log.Info("ConnectToDevice", "Connection ** OK **");
this.currentDevice.NameChanged += CurrentDevice_NameChanged;
}
// This just does the easy serial communications - this is using a regular HC-05 Classic (RFCOMM) board
//RfcommDeviceService s = await RfcommDeviceService.FromIdAsync(this.id);
//BluetoothDevice.GetRfcommServicesAsync();
this.log.Info("ConnectToDevice", () => string.Format("Device:{0} Connection status {1}",
this.currentDevice.Name, this.currentDevice.ConnectionStatus.ToString()));
GattDeviceServicesResult services = await this.currentDevice.GetGattServicesAsync();
if (services.Status == GattCommunicationStatus.Success)
{
if (services.Services != null)
{
if (services.Services.Count > 0)
{
foreach (GattDeviceService serv in services.Services)
{
// Service
this.log.Info("ConnectToDevice", () => string.Format("Gatt Service:{0} Uid:{1}",
BLE_DisplayHelpers.GetServiceName(serv), serv.Uuid.ToString()));
GattCharacteristicsResult characteristics = await serv.GetCharacteristicsAsync();
if (characteristics.Status == GattCommunicationStatus.Success)
{
if (characteristics.Characteristics != null)
{
if (characteristics.Characteristics.Count > 0)
{
foreach (GattCharacteristic ch in characteristics.Characteristics)
{
await this.DumpCharacteristic(ch);
GattDescriptorsResult descriptors = await ch.GetDescriptorsAsync();
if (descriptors.Status == GattCommunicationStatus.Success)
{
if (descriptors.Descriptors.Count > 0)
{
foreach (GattDescriptor desc in descriptors.Descriptors)
{
GattReadResult r = await desc.ReadValueAsync();
string descName = "N/A";
if (r.Status == GattCommunicationStatus.Success)
{
//descName = Encoding.ASCII.GetString(r.Value.FromBufferToBytes());
descName = BLE_ParseHelpers.GetDescriptorValueAsString(desc.Uuid, r.Value.FromBufferToBytes());
}
// descriptors have read and write
this.log.Info("ConnectToDevice", () => string.Format(" Descriptor:{0} Uid:{1} Value:{2}",
BLE_DisplayHelpers.GetDescriptorName(desc), desc.Uuid.ToString(), descName));
}
}
}
else
{
this.log.Info("ConnectToDevice", () => string.Format(" Get Descriptors result:{0}", descriptors.Status.ToString()));
}
}
}
else
{
this.log.Info("ConnectToDevice", () => string.Format("No characteristics"));
}
}
}
else
{
this.log.Info("ConnectToDevice", () => string.Format(" Characteristics result {0}", characteristics.Status.ToString()));
}
}
}
else
{
this.log.Info("ConnectToDevice", "No services exposed");
}
}
else
{
this.log.Error(9999, "Null services");
}
}
else
{
this.log.Info("ConnectToDevice", () => string.Format(" Get Services result {0}", services.Status.ToString()));
}
this.log.Info("ConnectToDevice", () => string.Format("--------------------------------------------------------------------"));
}
catch (Exception e) {
this.log.Exception(9999, "BLE Connect Exception", e);
}
try {
if (this.currentDevice == null)
{
// report error
this.log.Info("ConnectToDevice", () => string.Format("NULL device returned for {0}", deviceInfo.Id));
return;
}
else
{
// Note: BluetoothLEDevice.GattServices property will return an empty list for unpaired devices. For all uses we recommend using the GetGattServicesAsync method.
// BT_Code: GetGattServicesAsync returns a list of all the supported services of the device (even if it's not paired to the system).
// If the services supported by the device are expected to change during BT usage, subscribe to the GattServicesChanged event.
//GattDeviceServicesResult result =
// await this.currentDevice.GetGattServicesAsync(BluetoothCacheMode.Uncached);
////GattDeviceServicesResult result = await BluetoothLEDevice.FromIdAsync(this.currentDevice.DeviceId);
//System.Diagnostics.Debug.WriteLine("Device Connected {0}", this.currentDevice.BluetoothAddress);
this.log.Info("ConnectToDevice", () => string.Format("Device Connected {0}", this.currentDevice.BluetoothAddress));
}
}
catch (Exception ex) {
this.log.Exception(9999, "on main task", ex);
}
}