private async Task <bool> SharedInitialization()
{
// This will only be used for device-independent initialization.
ElmDeviceImplementation sharedImplementation = new ElmDeviceImplementation(null, null, this.Port, this.Logger);
return(await sharedImplementation.Initialize());
}
/// <summary>
/// Use the related classes to discover which type of device is currently connected.
/// </summary>
public override async Task <bool> Initialize()
{
try
{
this.Logger.AddDebugMessage("ElmDevice initialization starting.");
SerialPortConfiguration configuration = new SerialPortConfiguration();
configuration.BaudRate = 115200;
configuration.Timeout = 1200;
await this.Port.OpenAsync(configuration);
await this.Port.DiscardBuffers();
if (!await this.SharedInitialization())
{
return(false);
}
AllProDeviceImplementation allProDevice = new AllProDeviceImplementation(
this.Enqueue,
() => this.ReceivedMessageCount,
this.Port,
this.Logger);
if (await allProDevice.Initialize())
{
this.implementation = allProDevice;
}
else
{
ScanToolDeviceImplementation scanToolDevice = new ScanToolDeviceImplementation(
this.Enqueue,
() => this.ReceivedMessageCount,
this.Port,
this.Logger);
if (await scanToolDevice.Initialize())
{
this.implementation = scanToolDevice;
}
}
// These are shared by all ELM-based devices.
if (!await this.implementation.SendAndVerify("AT AL", "OK") || // Allow Long packets
!await this.implementation.SendAndVerify("AT SP2", "OK") || // Set Protocol 2 (VPW)
!await this.implementation.SendAndVerify("AT DP", "SAE J1850 VPW") || // Get Protocol (Verify VPW)
!await this.implementation.SendAndVerify("AT AR", "OK") || // Turn Auto Receive on (default should be on anyway)
!await this.implementation.SendAndVerify("AT AT0", "OK") || // Disable adaptive timeouts
!await this.implementation.SendAndVerify("AT SR " + DeviceId.Tool.ToString("X2"), "OK") || // Set receive filter to this tool ID
!await this.implementation.SendAndVerify("AT H1", "OK") || // Send headers
!await this.implementation.SendAndVerify("AT ST 20", "OK") // Set timeout (will be adjusted later, too)
)
{
return(false);
}
this.MaxSendSize = this.implementation.MaxSendSize;
this.MaxReceiveSize = this.implementation.MaxReceiveSize;
this.Supports4X = this.implementation.Supports4X;
}
catch (Exception exception)
{
this.Logger.AddDebugMessage("Unable to initalize " + this.ToString());
this.Logger.AddDebugMessage(exception.ToString());
return(false);
}
return(true);
}
