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add IUsb interface as connection interface for printer library

This commit is contained in:
Maff 2019-08-22 14:20:35 +01:00
parent 3820cbc13e
commit b76f3ab65f
4 changed files with 84 additions and 5 deletions
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2
libsharperang/Base.cs
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@ -1,6 +1,8 @@
using System;
using System.Collections.Generic;
using System.Text;
using Vadavo.NEscPos;
using Vadavo.NEscPos.Printable;
namespace libsharperang {
public abstract class Base {

38
libsharperang/IUsb.cs Normal file
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@ -0,0 +1,38 @@
using System;
using System.Collections.Generic;
using System.Text;
using LibUsbDotNet;
using Vadavo.NEscPos.Connectors;
namespace libsharperang
{
public class IUsb : IPrinterConnector
{
internal UsbDevice iPrinter;
private UsbEndpointReader pReader;
private UsbEndpointWriter pWriter;
public void Dispose()
{
pReader?.Dispose();
pWriter?.Dispose();
IUsbDevice p = iPrinter as IUsbDevice;
_ = p?.ReleaseInterface(0);
_ = iPrinter?.Close();
throw new NotImplementedException();
}
public byte[] Read()
{
if (pReader == null) pReader = iPrinter.OpenEndpointReader(LibUsbDotNet.Main.ReadEndpointID.Ep01);
byte[] bRead = new byte[1024];
_ = pReader.Read(bRead, 100, out int _);
return bRead;
}
public void Write(byte[] data)
{
if (pWriter == null) pWriter = iPrinter.OpenEndpointWriter(LibUsbDotNet.Main.WriteEndpointID.Ep01);
pWriter?.Write(data, 100, out int _);
}
}
}

1
libsharperang/libsharperang.csproj
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@ -8,6 +8,7 @@
<PackageReference Include="Device.Net" Version="3.0.0" />
<PackageReference Include="LibUsbDotNet" Version="2.2.29" />
<PackageReference Include="NativeUsbLib" Version="1.4.6" />
<PackageReference Include="Vadavo.NEscPos" Version="0.0.4" />
<PackageReference Include="WinUSBNet" Version="1.0.3" />
</ItemGroup>

48
libsharperang/usb.cs
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@ -3,14 +3,23 @@ using System.Linq;
using System.Collections.Generic;
using LibUsbDotNet;
using LibUsbDotNet.Main;
using Vadavo.NEscPos.Connectors;
namespace libsharperang {
public class USB : Base {
//both P1 and P2 models share the same idV and idP over USB
public readonly ushort idVendor=0x4348;
public readonly ushort idProduct=0x5584;
//differentiating between the two is a case of checking the product name
//P1 is identified as "MiaoMiaoji" or "MTTII Printer"
//P2 is identified as "Paperang_P2"
//Notable is that the idV and idP appear to belong not to Paperang, but to a generic CH34x printer adaptor device
// so it should be a constraint to check that the device descriptors match known details for supported devices,
// not just idV and idP
public UsbDevice printer;
public List<UsbRegistry> pInstances;
public List<Guid> pIds;
public IUsb pUsb;
public USB() {
ActiveConnectionType=ConnectionType.USB;
@ -19,12 +28,13 @@ namespace libsharperang {
public bool InitUSB() {
//NOTE - in order for this to work, you must use Zadig to change the driver for
// the printer from usbprint to WinUSB
if (UsbDevice.AllWinUsbDevices.Count == 0) return false;
//On MacOS and Linux libusb should "just work" here - testing is pending however.
if (UsbDevice.AllDevices.Count == 0) return false;
//genuinely just having some fun with Linq, don't judge me.
//TODO: work out a way of distinguishing multiple devices with same GUID
// which happens when two of the same device are connected
// the only thing that differs seemingly is the Address
pInstances = (from d in UsbDevice.AllWinUsbDevices
pInstances = (from d in UsbDevice.AllDevices
where d.Vid == idVendor && d.Pid == idProduct
select d)
.ToList<UsbRegistry>();
@ -35,12 +45,12 @@ namespace libsharperang {
return (pIds.Count > 0);
}
public List<int> GetAddressesFromGuid(Guid deviceId) {
return (from d in UsbDevice.AllWinUsbDevices
return (from d in UsbDevice.AllDevices
where d.DeviceInterfaceGuids.Contains(deviceId)
select d.DeviceProperties.Where(k => k.Key=="Address").FirstOrDefault().Value).ToList().ConvertAll(v => (int)v);
}
public bool OpenUSB() {
if (UsbDevice.AllWinUsbDevices.Count == 0) return false;
if (UsbDevice.AllDevices.Count == 0) return false;
if (pIds.Count == 0) return false;
return OpenUSB(pIds.FirstOrDefault());
}
@ -49,7 +59,7 @@ namespace libsharperang {
}
public bool OpenUSB(Guid deviceId, int deviceIndex) {
//first thought is to say "forgive me lord for i have sinned" but i am absolutely not repentant for this
bool OpenResult = (from d in UsbDevice.AllWinUsbDevices
bool OpenResult = (from d in UsbDevice.AllDevices
where d.DeviceInterfaceGuids.Contains(deviceId) &&
d.DeviceProperties.Where(k=>k.Key=="Address" && (int)k.Value==deviceIndex).Count() > 0
select d)
@ -59,6 +69,34 @@ namespace libsharperang {
return OpenResult;
}
public bool ClaimUSB()
{
if (printer is null || printer.IsOpen) return false;
IUsbDevice p = printer as IUsbDevice;
p?.SetConfiguration(1);
p?.ClaimInterface(0);
pUsb.iPrinter = printer;
return true;
}
/*
* TODO PollPrinter
* disassembly of Paperang for Mac comes up with the following
* method.Printer.checkConnect() does:
* * method.Printer.checkConnectFlag() && return something
* 0x01a022300
* 0xffffffff
* 0x00000000963007772c610eeeba51099919c46d078ff4
*
* need to USBPcap the mac software's comms to confirm above
*
* Paperang for Windows does completely different.
* ...apparently when the USB URB_CONTROL response says "COMMAND SET:ESC/POS" that means you literally just communicate with it using the ESC/POS protocol
* ...so i've wasted a lot of time trying to reverse-engineer an open spec..
*/
public string FoundPrinterGuids() => pIds
.ConvertAll(p => p.ToString())
.Aggregate((a, b) => a+","+b);