kopia lustrzana https://github.com/felHR85/UsbSerial
Trying to add CH34x chipsets present in the cheap arduino clones
Felipe Herranz
rodzic
7e12b71078
commit
845fc3ca2f
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@ -0,0 +1,345 @@
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/*
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* Heavily based on a pull-request made by Andreas Butti to https://github.com/mik3y/usb-serial-for-android
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* https://github.com/mik3y/usb-serial-for-android/pull/92
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*
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* I do not own one of these, so I can assure this works
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*/
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package com.felhr.usbserial;
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import android.hardware.usb.UsbConstants;
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import android.hardware.usb.UsbDevice;
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import android.hardware.usb.UsbDeviceConnection;
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import android.hardware.usb.UsbEndpoint;
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import android.hardware.usb.UsbInterface;
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import android.hardware.usb.UsbRequest;
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import android.util.Log;
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/*
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* TODO: CLOSE, IDS, UsbSerial factory method update (felhr)
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*/
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public class CH34xSerialDevice extends UsbSerialDevice
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{
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private static final String CLASS_ID = CH34xSerialDevice.class.getSimpleName();
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private static final int DEFAULT_BAUDRATE = 9600;
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private static final int REQTYPE_HOST_FROM_DEVICE = UsbConstants.USB_TYPE_VENDOR | UsbConstants.USB_DIR_IN;
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private static final int REQTYPE_HOST_TO_DEVICE = 0x41;
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private static final int CH341_REQ_WRITE_REG = 0x9A;
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private static final int CH341_REQ_READ_REG = 0x95;
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private static final int CH341_REG_BREAK1 = 0x05;
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private static final int CH341_REG_BREAK2 = 0x18;
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private static final int CH341_NBREAK_BITS_REG1 = 0x01;
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private static final int CH341_NBREAK_BITS_REG2 = 0x40;
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private static final int CH34X_2400_1 = 0xd901;
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private static final int CH34X_2400_2 = 0x0038;
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private static final int CH34X_4800_1 = 0x6402;
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private static final int CH34X_4800_2 = 0x001f;
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private static final int CH34X_9600_1 = 0xb202;
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private static final int CH34X_9600_2 = 0x0013;
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private static final int CH34X_19200_1 = 0xd902;
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private static final int CH34X_19200_2 = 0x000d;
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private static final int CH34X_38400_1 = 0x6403;
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private static final int CH34X_38400_2 = 0x000a;
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private static final int CH34X_115200_1 = 0xcc03;
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private static final int CH34X_115200_2 = 0x0008;
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private UsbInterface mInterface;
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private UsbEndpoint inEndpoint;
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private UsbEndpoint outEndpoint;
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private UsbRequest requestIN;
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private boolean dtr = false;
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private boolean rts = false;
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public CH34xSerialDevice(UsbDevice device, UsbDeviceConnection connection)
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{
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super(device, connection);
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// TODO Auto-generated constructor stub
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}
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public CH34xSerialDevice(UsbDevice device, UsbDeviceConnection connection, int iface)
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{
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super(device, connection);
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mInterface = device.getInterface(iface >= 0 ? iface : 0);
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}
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@Override
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public boolean open()
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{
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// Restart the working thread and writeThread if it has been killed before and claim interface
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restartWorkingThread();
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restartWriteThread();
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if(connection.claimInterface(mInterface, true))
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{
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Log.i(CLASS_ID, "Interface succesfully claimed");
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}else
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{
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Log.i(CLASS_ID, "Interface could not be claimed");
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return false;
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}
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// Assign endpoints
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int numberEndpoints = mInterface.getEndpointCount();
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for(int i=0;i<=numberEndpoints-1;i++)
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{
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UsbEndpoint endpoint = mInterface.getEndpoint(i);
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if(endpoint.getType() == UsbConstants.USB_ENDPOINT_XFER_BULK
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&& endpoint.getDirection() == UsbConstants.USB_DIR_IN)
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{
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inEndpoint = endpoint;
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}else
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{
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outEndpoint = endpoint;
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}
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}
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// Default Setup
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if(init() == 0)
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{
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setBaudRate(DEFAULT_BAUDRATE);
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// Initialize UsbRequest
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requestIN = new UsbRequest();
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requestIN.initialize(connection, inEndpoint);
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// Pass references to the threads
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setThreadsParams(requestIN, outEndpoint);
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return true;
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}else
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{
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return false;
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}
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}
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@Override
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public void close()
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{
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// TODO felhr CLOSE
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}
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@Override
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public void setBaudRate(int baudRate)
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{
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if(baudRate <= 2400)
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{
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int ret = setControlCommandOut(CH341_REQ_WRITE_REG, 0x1312, CH34X_2400_1, null);
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if(ret < 0)
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{
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Log.i(CLASS_ID, "Error setting baudRate");
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}else
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{
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ret = setControlCommandOut(CH341_REQ_WRITE_REG, 0x0f2c, CH34X_2400_2, null);
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if(ret < 0)
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Log.i(CLASS_ID, "Error setting baudRate");
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else
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Log.i(CLASS_ID, "BaudRate set correctly");
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}
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}else if(baudRate > 2400 && baudRate <= 4800)
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{
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int ret = setControlCommandOut(CH341_REQ_WRITE_REG, 0x1312, CH34X_4800_1, null);
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if(ret < 0)
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{
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Log.i(CLASS_ID, "Error setting baudRate");
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}else
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{
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ret = setControlCommandOut(CH341_REQ_WRITE_REG, 0x0f2c, CH34X_4800_2, null);
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if(ret < 0)
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Log.i(CLASS_ID, "Error setting baudRate");
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else
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Log.i(CLASS_ID, "BaudRate set correctly");
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}
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}else if(baudRate > 4800 && baudRate <= 9600)
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{
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int ret = setControlCommandOut(CH341_REQ_WRITE_REG, 0x1312, CH34X_9600_1, null);
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if(ret < 0)
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{
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Log.i(CLASS_ID, "Error setting baudRate");
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}else
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{
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ret = setControlCommandOut(CH341_REQ_WRITE_REG, 0x0f2c, CH34X_9600_2, null);
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if(ret < 0)
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Log.i(CLASS_ID, "Error setting baudRate");
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else
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Log.i(CLASS_ID, "BaudRate set correctly");
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}
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}else if(baudRate > 9600 && baudRate <= 19200)
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{
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int ret = setControlCommandOut(CH341_REQ_WRITE_REG, 0x1312, CH34X_19200_1, null);
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if(ret < 0)
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{
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Log.i(CLASS_ID, "Error setting baudRate");
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}else
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{
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ret = setControlCommandOut(CH341_REQ_WRITE_REG, 0x0f2c, CH34X_19200_2, null);
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if(ret < 0)
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Log.i(CLASS_ID, "Error setting baudRate");
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else
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Log.i(CLASS_ID, "BaudRate set correctly");
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}
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}else if(baudRate > 19200 && baudRate <= 38400)
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{
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int ret = setControlCommandOut(CH341_REQ_WRITE_REG, 0x1312, CH34X_38400_1, null);
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if(ret < 0)
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{
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Log.i(CLASS_ID, "Error setting baudRate");
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}else
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{
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ret = setControlCommandOut(CH341_REQ_WRITE_REG, 0x0f2c, CH34X_38400_2, null);
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if(ret < 0)
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Log.i(CLASS_ID, "Error setting baudRate");
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else
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Log.i(CLASS_ID, "BaudRate set correctly");
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}
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}else if(baudRate > 38400)
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{
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int ret = setControlCommandOut(CH341_REQ_WRITE_REG, 0x1312, CH34X_115200_1, null);
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if(ret < 0)
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{
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Log.i(CLASS_ID, "Error setting baudRate");
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}else
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{
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ret = setControlCommandOut(CH341_REQ_WRITE_REG, 0x0f2c, CH34X_115200_2, null);
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if(ret < 0)
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Log.i(CLASS_ID, "Error setting baudRate");
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else
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Log.i(CLASS_ID, "BaudRate set correctly");
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}
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}
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}
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@Override
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public void setDataBits(int dataBits)
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{
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// TODO Auto-generated method stub
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}
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@Override
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public void setStopBits(int stopBits)
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{
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// TODO Auto-generated method stub
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}
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@Override
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public void setParity(int parity)
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{
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// TODO Auto-generated method stub
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}
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@Override
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public void setFlowControl(int flowControl)
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{
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// TODO Auto-generated method stub
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}
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private int init()
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{
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if(checkState("init #1", 0x5f, 0, new int[]{-1 /* 0x27, 0x30 */, 0x00}) == -1)
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return -1;
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if(setControlCommandOut(0xa1, 0, 0, null) == -1)
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return -1;
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setBaudRate(DEFAULT_BAUDRATE);
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if(checkState("init #4", 0x95, 0x2518, new int[]{-1 /* 0x56, c3*/, 0x00}) == -1)
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return -1;
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setControlCommandOut(0x9a, 0x2518, 0x0050, null);
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if(checkState("init #6", 0x95, 0x0706, new int[]{0xff, 0xee}) == -1)
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return -1;
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setControlCommandOut(0xa1, 0x501f, 0xd90a, null);
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setBaudRate(DEFAULT_BAUDRATE);
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if(writeHandshakeByte() == -1)
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return -1;
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if(checkState("init #10", 0x95, 0x0706, new int[]{-1/* 0x9f, 0xff*/, 0xee}) == -1)
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return -1;
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else
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return 0;
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}
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private int checkState(String msg, int request, int value, int[] expected)
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{
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byte[] buffer = new byte[expected.length];
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int ret = setControlCommandIn(request, value, 0, buffer);
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if (ret != expected.length)
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{
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Log.i(CLASS_ID, ("Expected " + expected.length + " bytes, but get " + ret + " [" + msg + "]"));
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return -1;
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}else
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{
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for (int i = 0; i < expected.length; i++)
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{
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if (expected[i] == -1)
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{
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continue;
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}
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int current = buffer[i] & 0xff;
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if (expected[i] != current)
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{
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Log.i(CLASS_ID, "Expected 0x" + Integer.toHexString(expected[i]) + " bytes, but get 0x" + Integer.toHexString(current) + " [" + msg + "]");
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return -1;
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}
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}
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return 0;
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}
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}
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private int writeHandshakeByte()
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{
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if(setControlCommandOut(0xa4, ~((dtr ? 1 << 5 : 0) | (rts ? 1 << 6 : 0)), 0, null) < 0)
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{
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Log.i(CLASS_ID, "Faild to set handshake byte");
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return -1;
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}else if(setControlCommandOut(0xa4, ~((dtr ? 1 << 5 : 0) | (rts ? 1 << 6 : 0)), 0, null) > 0)
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{
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return 0;
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}
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return 0;
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}
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private int setControlCommandOut(int request, int value, int index, byte[] data)
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{
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int dataLength = 0;
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if(data != null)
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{
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dataLength = data.length;
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}
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int response = connection.controlTransfer(REQTYPE_HOST_TO_DEVICE, request, value, index, data, dataLength, USB_TIMEOUT);
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Log.i(CLASS_ID,"Control Transfer Response: " + String.valueOf(response));
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return response;
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}
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private int setControlCommandIn(int request, int value, int index, byte[] data)
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{
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int dataLength = 0;
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if(data != null)
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{
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dataLength = data.length;
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}
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int response = connection.controlTransfer(REQTYPE_HOST_FROM_DEVICE, request, value, index, data, dataLength, USB_TIMEOUT);
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Log.i(CLASS_ID,"Control Transfer Response: " + String.valueOf(response));
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return response;
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}
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}
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