WinCE的USB Device功能实现(S…

  现在大多数WinCE设备都带有USB Device功能,Device也即设备,在PC看来,WinCE就是作为一个设备,可以表现为U盘,也可表现为网络设备(RNDIS),也可以做为串口(ActiveSync同步使用),也可作为modem。
 
1. 选择USB Client的组件。
   在Catalog Items View中选择”Device Drivers”->”USB Function”->”USB Function Clients”->”RNDIS Clients”,如图:
WinCE的USB <wbr>Device功能实现(Serial,RNDIS,Mass_Storage)
 
2. 注册表设置
 
[HKEY_LOCAL_MACHINE\Drivers\USB\FunctionDrivers]
   "DefaultClientDriver"="Serial_class"
   ;"DefaultClientDriver"="RNDIS"
   ;"DefaultClientDriver"="Mass_Storage_Class"
 
; Serial Config
[HKEY_LOCAL_MACHINE\Drivers\USB\FunctionDrivers\Serial_Class]
   "Dll"="serialusbfn.dll"
   "DeviceName"="USBFNS1:"
   "Prefix"="COM"
   "IClass"="{CC5195AC-BA49-48a0-BE17-DF6D1B0173DD}"
   "idVendor"=dword:0547
   "Manufacturer"="Sozhou"
   "idProduct"=dword:2720
   "Product"="Sozhou Product"
   "bcdDevice"=dword:0
   "DeviceType"=dword:0
 
; RNDIS Config
[HKEY_LOCAL_MACHINE\Drivers\USB\FunctionDrivers\RNDIS]
   "UseActiveSyncIds"=dword:1
   "Dll"="rndisfn.dll"
   "FriendlyName"="Rndis"
   "idVendor"=dword:0162
   "Manufacturer"="Sozhou"
   "idProduct"=dword:0001
   "Product"="Sozhou RNDIS"
   "bcdDevice"=dword:0
[HKEY_LOCAL_MACHINE\Comm\RndisFn1\Parms\TcpIp]
   "DefaultGateway"=""
   "UseZeroBroadcast"=dword:0
   "IpAddress"="192.168.0.12"
   "Subnetmask"="255.255.255.0"
   "EnableDHCP"=dword:0
 
; U Disk
[HKEY_LOCAL_MACHINE\Drivers\USB\FunctionDrivers\Mass_Storage_Class]
 "Dll"="usbmsfn.dll" ;USB Client的驱动
 "DeviceName"="DSK1:" ;被映射为U盘的存储设备的设备名
 "DeviceName1"="DSK2:" ;更多的存储设备,比如SD卡
 "FriendlyName"="Mass Storage" ;显示设备名
 "idVendor"=dword:2310 ;Vendor ID,应该向USB组织申请
 "idProduct"=dword:1234 ;Product ID,由厂商定义
 "Manufacturer"="Sozhou" ;厂商名
 "Product"="Sozhou Mass Storage" ;产品名
 "bcdDevice"=dword:0 ;设备的版本号
 "InterfaceSubClass"=dword:06 ;USB Host端通过该值来枚举设备,06h表示Mass Storage。
 "InterfaceProtocol"=dword:50 ;USB设备所支持的传输协议,50h表示bulk-only。


3. 重新编译WinCE,下载运行
 
 

4. 基于USB Serial的串口通讯
   对于WinCE目标板来说,直接打开串口就可以,在我的系统里面支持多个串口,USB Serial是"COM5:",通过CreateFile打开就可以,然后通过WriteFile和ReadFile函数来发送和接收数据,和一般的串口通讯是一样的。
   对于PC来说,需要打开"wceusbsh001"设备,同样用CreateFile,这一点和普通的串口通讯略有区别,发送和接收数据同样用WriteFile和ReadFile,这里还是给个例子吧,搞清楚例子是PC端的串口通讯,如下:
 

#define USBSERIAL_NAME "\\\\.\\wceusbsh001"

int _tmain(int argc, _TCHAR* argv[])
{
    HANDLE hSerial;
    DCB PortDCB;
    COMMTIMEOUTS CommTimeouts;
    unsigned char buf[64];
    DWORD i, num;
    BOOL SerialFlag;
 
    hSerial = CreateFile(_T(USBSERIAL_NAME), (GENERIC_READ | GENERIC_WRITE), 0, NULL, OPEN_EXISTING, 0, NULL);
    if (hSerial == NULL)
    {
        printf("Open Error.\r\n");
        return 1;
    }

    PortDCB.DCBlength = sizeof(DCB);
    GetCommState(hSerial, &PortDCB);
    PortDCB.BaudRate = 115200;
    PortDCB.ByteSize = 8;
    PortDCB.Parity = NOPARITY;
    PortDCB.StopBits = ONESTOPBIT;
    if (! SetCommState(hSerial, &PortDCB))
    {
       printf("Set COM Parameter Error.\r\n");
       CloseHandle(hSerial);
       return 1;
    }

    GetCommTimeouts(hSerial, &CommTimeouts);
    CommTimeouts.ReadIntervalTimeout = MAXDWORD;
    CommTimeouts.ReadTotalTimeoutMultiplier = 10;
    CommTimeouts.ReadTotalTimeoutConstant= 10;
    CommTimeouts.WriteTotalTimeoutMultiplier = 50;
    CommTimeouts.WriteTotalTimeoutConstant = 100;

    if (!SetCommTimeouts(hSerial, &CommTimeouts))
    {
        printf("Set COM timeout parameter error.\r\n");
        CloseHandle(hSerial);
        return 1;
    }
    
// Write data

    for (i = 0; i < 10; i ++)
    {
        memset(buf, i, sizeof(buf));
        SerialFlag = WriteFile(hSerial, buf, sizeof(buf), &num, NULL);
        if (SerialFlag)
        {
            printf("Write %d bytes to COM.\r\n", num);
        }
        else
        {
            printf("Write COM Error.\r\n");
        }
        Sleep(1000);
    }

    
// Receive Data

    while(1)
    {
        memset(buf, 0, sizeof(buf));
        SerialFlag = ReadFile(hSerial, buf, 16, &num, 0);
        if (SerialFlag)
        {
            if (num == 0)
            {
                printf("Read Successfully, but didn't read any data.\r\n");
            }
            else
            {
                printf("Read data: ");
                for (i = 0; i < 16; i ++)
                {
                    printf("0x%x, ", buf[i]);
                }
                printf("\r\n");
            }
        }
  

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