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Copy pathCh340Chip.java
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271 lines (248 loc) · 8.92 KB
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public class CH340Chip {
public boolean config(UsbDeviceConnection usbDeviceConnection) {
if (!UartInit(usbDeviceConnection)) {//初始化串口
return false;
} else {//配置串口
if (SetConfig(usbDeviceConnection, baudRate, (byte) 8, (byte) 1,
(byte) 0, (byte) 0)) {
Logger.i(TAG, "Uart Configed");
} else {
return false;
}
}
return true;
}
private boolean UartInit(UsbDeviceConnection usbDeviceConnection) {
int ret;
int size = 8;
byte[] buffer = new byte[size];
Uart_Control_Out(usbDeviceConnection, UartCmd.VENDOR_SERIAL_INIT, 0x0000, 0x0000);
ret = Uart_Control_In(usbDeviceConnection, UartCmd.VENDOR_VERSION, 0x0000, 0x0000, buffer, 2);
if (ret < 0)
return false;
Uart_Control_Out(usbDeviceConnection, UartCmd.VENDOR_WRITE, 0x1312, 0xD982);
Uart_Control_Out(usbDeviceConnection, UartCmd.VENDOR_WRITE, 0x0f2c, 0x0004);
ret = Uart_Control_In(usbDeviceConnection, UartCmd.VENDOR_READ, 0x2518, 0x0000, buffer, 2);
if (ret < 0)
return false;
Uart_Control_Out(usbDeviceConnection, UartCmd.VENDOR_WRITE, 0x2727, 0x0000);
Uart_Control_Out(usbDeviceConnection, UartCmd.VENDOR_MODEM_OUT, 0x00ff, 0x0000);
return true;
}
private int Uart_Control_Out(UsbDeviceConnection usbDeviceConnection, int request, int value, int index) {
int retval = 0;
retval = usbDeviceConnection.controlTransfer(UsbType.USB_TYPE_VENDOR
| UsbType.USB_RECIP_DEVICE | UsbType.USB_DIR_OUT, request,
value, index, null, 0, timeOut);
return retval;
}
private int Uart_Control_In(UsbDeviceConnection usbDeviceConnection, int request, int value, int index,
byte[] buffer, int length) {
int retval = 0;
retval = usbDeviceConnection.controlTransfer(UsbType.USB_TYPE_VENDOR
| UsbType.USB_RECIP_DEVICE | UsbType.USB_DIR_IN, request,
value, index, buffer, length, timeOut);
return retval;
}
private final class UartCmd {
public static final int VENDOR_WRITE_TYPE = 0x40;
public static final int VENDOR_READ_TYPE = 0xC0;
public static final int VENDOR_READ = 0x95;
public static final int VENDOR_WRITE = 0x9A;
public static final int VENDOR_SERIAL_INIT = 0xA1;
public static final int VENDOR_MODEM_OUT = 0xA4;
public static final int VENDOR_VERSION = 0x5F;
}
private final class UsbType {
public static final int USB_TYPE_VENDOR = (0x02 << 5);
public static final int USB_RECIP_DEVICE = 0x00;
public static final int USB_DIR_OUT = 0x00; /* to device */
public static final int USB_DIR_IN = 0x80; /* to host */
}
private final class UartModem {
public static final int TIOCM_LE = 0x001;
public static final int TIOCM_DTR = 0x002;
public static final int TIOCM_RTS = 0x004;
public static final int TIOCM_ST = 0x008;
public static final int TIOCM_SR = 0x010;
public static final int TIOCM_CTS = 0x020;
public static final int TIOCM_CAR = 0x040;
public static final int TIOCM_RNG = 0x080;
public static final int TIOCM_DSR = 0x100;
public static final int TIOCM_CD = TIOCM_CAR;
public static final int TIOCM_RI = TIOCM_RNG;
public static final int TIOCM_OUT1 = 0x2000;
public static final int TIOCM_OUT2 = 0x4000;
public static final int TIOCM_LOOP = 0x8000;
}
private int Uart_Tiocmset(UsbDeviceConnection usbDeviceConnection, int set, int clear) {
int control = 0;
if ((set & UartModem.TIOCM_RTS) == UartModem.TIOCM_RTS)
control |= UartIoBits.UART_BIT_RTS;
if ((set & UartModem.TIOCM_DTR) == UartModem.TIOCM_DTR)
control |= UartIoBits.UART_BIT_DTR;
if ((clear & UartModem.TIOCM_RTS) == UartModem.TIOCM_RTS)
control &= ~UartIoBits.UART_BIT_RTS;
if ((clear & UartModem.TIOCM_DTR) == UartModem.TIOCM_DTR)
control &= ~UartIoBits.UART_BIT_DTR;
return Uart_Set_Handshake(usbDeviceConnection, control);
}
private int Uart_Set_Handshake(UsbDeviceConnection usbDeviceConnection, int control) {
return Uart_Control_Out(usbDeviceConnection, UartCmd.VENDOR_MODEM_OUT, ~control, 0);
}
private final class UartIoBits {
public static final int UART_BIT_RTS = (1 << 6);
public static final int UART_BIT_DTR = (1 << 5);
}
private boolean SetConfig(UsbDeviceConnection usbDeviceConnection, long baudRate, byte dataBit, byte stopBit,
byte parity, byte flowControl) {
int value = 0;
int index = 0;
char valueHigh = 0, valueLow = 0, indexHigh = 0, indexLow = 0;
switch (parity) {
case 0: /* NONE */
valueHigh = 0x00;
break;
case 1: /* ODD */
valueHigh |= 0x08;
break;
case 2: /* Even */
valueHigh |= 0x18;
break;
case 3: /* Mark */
valueHigh |= 0x28;
break;
case 4: /* Space */
valueHigh |= 0x38;
break;
default: /* None */
valueHigh = 0x00;
break;
}
if (stopBit == 2) {
valueHigh |= 0x04;
}
switch (dataBit) {
case 5:
valueHigh |= 0x00;
break;
case 6:
valueHigh |= 0x01;
break;
case 7:
valueHigh |= 0x02;
break;
case 8:
valueHigh |= 0x03;
break;
default:
valueHigh |= 0x03;
break;
}
valueHigh |= 0xc0;
valueLow = 0x9c;
value |= valueLow;
value |= (int) (valueHigh << 8);
switch ((int) baudRate) {
case 50:
indexLow = 0;
indexHigh = 0x16;
break;
case 75:
indexLow = 0;
indexHigh = 0x64;
break;
case 110:
indexLow = 0;
indexHigh = 0x96;
break;
case 135:
indexLow = 0;
indexHigh = 0xa9;
break;
case 150:
indexLow = 0;
indexHigh = 0xb2;
break;
case 300:
indexLow = 0;
indexHigh = 0xd9;
break;
case 600:
indexLow = 1;
indexHigh = 0x64;
break;
case 1200:
indexLow = 1;
indexHigh = 0xb2;
break;
case 1800:
indexLow = 1;
indexHigh = 0xcc;
break;
case 2400:
indexLow = 1;
indexHigh = 0xd9;
break;
case 4800:
indexLow = 2;
indexHigh = 0x64;
break;
case 19200:
indexLow = 2;
indexHigh = 0xd9;
break;
case 38400:
indexLow = 3;
indexHigh = 0x64;
break;
case 57600:
indexLow = 3;
indexHigh = 0x98;
break;
case 115200:
indexLow = 3;
indexHigh = 0xcc;
break;
case 230400:
indexLow = 3;
indexHigh = 0xe6;
break;
case 460800:
indexLow = 3;
indexHigh = 0xf3;
break;
case 500000:
indexLow = 3;
indexHigh = 0xf4;
break;
case 921600:
indexLow = 7;
indexHigh = 0xf3;
break;
case 1000000:
indexLow = 3;
indexHigh = 0xfa;
break;
case 2000000:
indexLow = 3;
indexHigh = 0xfd;
break;
case 3000000:
indexLow = 3;
indexHigh = 0xfe;
break;
default: // default baudRate "9600"
indexLow = 2;
indexHigh = 0xb2;
break;
}
index |= 0x88 | indexLow;
index |= (int) (indexHigh << 8);
Uart_Control_Out(usbDeviceConnection, UartCmd.VENDOR_SERIAL_INIT, value, index);
if (flowControl == 1) {
Uart_Tiocmset(usbDeviceConnection, UartModem.TIOCM_DTR | UartModem.TIOCM_RTS, 0x00);
}
return true;
}
}