又返回來繼續(xù)檢查2E這個(gè)問題，我在初始化失敗后，再次重新初始化，還是失敗。

可以考慮將設(shè)備寄過來，我們嘗試來操作該設(shè)備。聯(lián)系025-52632854

my code is a bit different because i use my own header files for compiling in Keil, SDCC and IAR but its based on WCH code. Here is the module for sending Control Requests in Hostmode:

/*?this?module?contains?the?std?ctrl?requests?to?get?a?device?enumerated.
???The?functions?are?universal?written?and?can?be?used?to?enum?various
???usb?devices.???
*/

#include?"..\inc\mytypes.h"
#include?"..\inc\ch559.h"?
#include?"..\inc\udisklib.h"

extern?uint8_t?XDATA?RxBuffer[];
extern?uint8_t?XDATA?TxBuffer[];

uint8_t?DeviceEp0Size;???//holds?bMaxPacketSize0?

#define?pSetupReq?((PUSB_SETUP_REQ)TxBuffer)?//to?be?compatible?with?WCH?code

/*?perform?a?Setup?request?in?Hostmode
???The?function?expects?a?vaild?USB?setup?packet?allready?prepared?in
???TxBuffer?and?then?handles?the?complete?request.?This?includes?control
???stage,?optionaly?datastages?and?finaly?the?status?stage.
???Params:?[in,out]?DataBuf?pointer?to?a?buffer?for?the?datastage
???????????[out]????Retlen??pointer?to?size?of?the?buffer
???Result:?ERR_SUCCESS?or?a?some?errorcode?if?the?function?fails
*/
uint8_t?Host_CtrlTransfer(uint8_t?XDATA?*DataBuf,?uint8_t?IDATA?*RetLen)
{
???uint8_t??error;
???uint8_t??remLen;
???uint8_t??rxLen;
???uint8_t??stageCnt;

???mDelayuS(200);
???if?(RetLen)?*RetLen?=?0;
???UH_TX_LEN?=?sizeof(USB_SETUP_REQ);
???//
???//?Setup?Stage
???//
???error?=?Host_UsbTransact((uint8_t)((USB_PID_SETUP?<<?4)?|?0x00),?0x00,?10000);
???if?(error)?return?error;
???UH_RX_CTRL?=?UH_TX_CTRL?=?bUH_R_TOG?|?bUH_R_AUTO_TOG?|?bUH_T_TOG?|?bUH_T_AUTO_TOG;
???UH_TX_LEN??=?0x01;

???//?check?if?the?request?has?a?wlength?>=?256
???remLen?=?pSetupReq?->?wLengthH???0xFF
??????????????????????????????????:?pSetupReq?->?wLengthL;
???//
???//?Data?Stage
???//
???if?(remLen?&&?DataBuf)?//?is?there?a?data?stage?at?all?
???{
??????if?(pSetupReq?->?bRequestType?&?_HOST)?//?check?the?direction
??????{??//?GetRequest
?????????while?(remLen)
?????????{??//?split?the?RX?stages
????????????mDelayuS(?200?);
????????????error?=?Host_UsbTransact((uint8_t)((USB_PID_IN?<<?4)?|?0x00),
?????????????????????????????????????UH_RX_CTRL,
?????????????????????????????????????10000);
????????????if?(error)?return?error;

????????????rxLen?=?(USB_RX_LEN?<?remLen)???USB_RX_LEN
??????????????????????????????????????????:?remLen;
????????????remLen?-=?rxLen;
????????????if?(RetLen)?*RetLen?+=?rxLen;

????????????for?(stageCnt?=?0;?stageCnt?!=?rxLen;?stageCnt?++)
????????????{
???????????????*DataBuf?=?RxBuffer[stageCnt];
???????????????DataBuf?++;
????????????}

????????????if?(?(USB_RX_LEN?==?0)?||
?????????????????(USB_RX_LEN?&?(DeviceEp0Size?-1))
???????????????)?break;
?????????}
?????????UH_TX_LEN?=?0x00;
??????}
??????else
??????{??//?SetRequest
?????????while?(?remLen?)
?????????{
???????????mDelayuS(?200?);
???????????UH_TX_LEN?=?remLen?>=?DeviceEp0Size???DeviceEp0Size
???????????????????????????????????????????????:?remLen;
???????????for?(?stageCnt?=?0;?stageCnt?!=?UH_TX_LEN;?stageCnt?++?)
???????????{
??????????????TxBuffer[stageCnt]?=?*DataBuf;
??????????????DataBuf?++;
???????????}
???????????error?=?Host_UsbTransact(?USB_PID_OUT?<<?4?|?0x00,?
?????????????????????????????????????UH_TX_CTRL,?
?????????????????????????????????????10000/*200000/20*/?);
???????????if?(error)?return?error;
???????????remLen?-=?UH_TX_LEN;
???????????if?(?RetLen?)?*RetLen?+=?UH_TX_LEN;
?????????}
?????????UH_TX_LEN?=?0x01;
??????}
???}
???//
???//?Status?stage
???//
???mDelayuS?(200);
???error?=?Host_UsbTransact(UH_TX_LEN???USB_PID_IN??<<?4?|?0x00
??????????????????????????????????????:?USB_PID_OUT?<<?4?|?0x00,
????????????????????????????bUH_R_TOG?|?bUH_T_TOG,
????????????????????????????10000);

???if?(error)?return?error;
???if?(UH_TX_LEN?==?0)??return?ERR_SUCCESS;
???if?(USB_RX_LEN?==?0)?return?ERR_SUCCESS;
???return(?ERR_USB_BUF_OVER?);
}

/*?read?the?device?descriptor?to?learn?about?bMaxPacketSize0
???optionally?just?allow?special?devices?based?on?Vendor?and?Product
???to?connect.
*/
uint8_t?Host_CtrlGetDeviceDescr(uint16_t?Vendor,uint16_t?Product)
{
???uint8_t??error;
???uint8_t??len;
???uint16_t?id;
???//
???//?first?just?request?8?bytes?since?bMaxPacketSize0?is?unknown
???//?this?is?how?OSX?is?enumerating?Win?does?it?a?bit?different
???//
???TxBuffer[0]=?_HOST?|?_DEVICE;
???TxBuffer[1]=?USB_GET_DESCRIPTOR;
???TxBuffer[2]=?0x00;
???TxBuffer[3]=?USB_DEVICE_DESCRIPTOR;
???TxBuffer[4]=?0x00;
???TxBuffer[5]=?0x00;
???TxBuffer[6]=?0x08;?
???TxBuffer[7]=?0x00;
???error?=?Host_CtrlTransfer(TxBuffer,?&len);??//?perform?the?request
???if?(error)?return?error;???	
???DeviceEp0Size?=?((pDeviceDescriptor)TxBuffer)?->?bMaxPacketSize0;
???if?((Vendor)?||?(Product))
???{	
??????//
??????//?read?the?complete?device?descriptor?
??????//?to?learn?about?VID?/?PID
??????//
??????TxBuffer[0]=?_HOST?|?_DEVICE;
??????TxBuffer[1]=?USB_GET_DESCRIPTOR;
??????TxBuffer[2]=?0x00;
??????TxBuffer[3]=?USB_DEVICE_DESCRIPTOR;
??????TxBuffer[4]=?0x00;
??????TxBuffer[5]=?0x00;
??????TxBuffer[6]=?sizeof(DeviceDescriptor);
??????TxBuffer[7]=?0x00;
??????error?=?Host_CtrlTransfer(TxBuffer,?&len);??//?perform?the?request
??????if?(error)?return?error;???	
??????//
??????//?check?for?matches
??????//
??????if?(Vendor)???
??????{
???	?????id?=?((pDeviceDescriptor)TxBuffer)?->?idVendorHi;
???	?????id?=?id?<<?8?|?((pDeviceDescriptor)TxBuffer)->idVendorLo;
?????????if?(id!=Vendor)?return?ERR_USB_UNSUPPORT;
??????}
???
??????if?(Product)
??????{
???	?????id?=?((pDeviceDescriptor)TxBuffer)?->?idProductHi;
???	?????id?=?id?<<?8?|?((pDeviceDescriptor)TxBuffer)->idProductLo;
?????????if?(id!=Vendor)?return?ERR_USB_UNSUPPORT;
??????}
???}???	?
???return?error;
}

/*?send?the?configure?comand

*/
uint8_t?Host_CtrlSetUsbConfig(uint8_t?cfg)
{
???uint8_t?error;

???TxBuffer[0]=?_DEVICE;
???TxBuffer[1]=?USB_SET_CONFIGURATION;
???TxBuffer[2]=?cfg;
???TxBuffer[3]=?0;
???TxBuffer[4]=?0x00;
???TxBuffer[5]=?0x00;
???TxBuffer[6]=?0;
???TxBuffer[7]=?0x00;

???error?=?Host_CtrlTransfer(NULL,?NULL);
???return?error;
}

/*?get?the?config?descriptor?
*/
uint8_t?Host_CtrlGetConfigDescr(void)
{
???uint8_t??error;
???uint8_t??len;
???uint16_t?wTotalLen;

???TxBuffer[0]=?_HOST?|?_DEVICE;
???TxBuffer[1]=?USB_GET_DESCRIPTOR;
???TxBuffer[2]=?0x00;
???TxBuffer[3]=?USB_CONFIGURATION_DESCRIPTOR;
???TxBuffer[4]=?0x00;
???TxBuffer[5]=?0x00;
???TxBuffer[6]=?sizeof(ConfigurationDescriptor);
???TxBuffer[7]=?0x00;

???error?=?Host_CtrlTransfer(TxBuffer,?&len);
???if?(error)?return?error;???	
???if?(len?<?sizeof(ConfigurationDescriptor))?return?ERR_USB_BUF_OVER;
???wTotalLen?=?((pConfigurationDescriptor)TxBuffer)->?wTotalLengthHi;
???wTotalLen?=?(wTotalLen?<<?8)?|?
???????????????((pConfigurationDescriptor)TxBuffer)->?wTotalLengthLo;
???
???TxBuffer[0]=?_HOST?|?_DEVICE;
???TxBuffer[1]=?USB_GET_DESCRIPTOR;
???TxBuffer[2]=?0x00;
???TxBuffer[3]=?USB_CONFIGURATION_DESCRIPTOR;
???TxBuffer[4]=?0x00;
???TxBuffer[5]=?0x00;
???TxBuffer[6]=?wTotalLen?&?0xFF;
???TxBuffer[7]=?wTotalLen?>>?8;

???error?=?Host_CtrlTransfer(TxBuffer,?&len);
???if?(error)?return?error;???	
???if?(len?!=wTotalLen)?return?ERR_USB_UNSUPPORT;
???return(?ERR_SUCCESS?);
}
.....

and then a enum module for a memory stick:

/*?enumerate?the?memory?stick??

*/
uint8_t?Host_EnumMemStick(void)
{
???uint8_t?error;
???//?learn?about?the?device?ignore?VID?/?PID
???error?=?Host_CtrlGetDeviceDescr(0x0000,0x0000);
???if?(error)?return?error;
???Debug(printf("DevDesc?ok\n"));
???//	set?the?USB?Address
???error?=?Host_CtrlSetUsbAddress(0x02);
???if?(error)?return?error;
???Debug(printf("UsbAdr?ok\n"));?	???	
???error?=?Host_CtrlGetConfigDescr();
???if?(error)?return?error;
???Debug(printf("CfgDesc?ok\n"));?
???//?check?the?fields
???if?(((pConfigurationDescriptor)TxBuffer)->?wTotalLengthHi)
???{??
?????Debug(printf("wLenght?err\n"));
?????return?ERR_USB_UNSUPPORT;?
???}
???//?has?to?be?32?bytes?in?size
???if?(((pConfigurationDescriptor)TxBuffer)->?wTotalLengthLo?!=?0x20)
???{?
?????Debug(printf("wLenght?!=?0x20\n"));??????
?????return?ERR_USB_UNSUPPORT;	
???}?
???//?has?to?be?CLASS_MSD
???if?((((PUSB_CFG_DESCR_LONG)TxBuffer)->itf_descr.bInterfaceClass)?!=?0x08)?
???{
??????Debug(printf("Class?err\n"));??????
??????return?ERR_USB_UNSUPPORT;	
???}
???//?has?to?be?bulk?only?protocol
???if?((((PUSB_CFG_DESCR_LONG)TxBuffer)->itf_descr.bInterfaceProtocol)?!=?0x50)?
???{
??????Debug(printf("protocoll?err\n"));??????
??????return?ERR_USB_UNSUPPORT;
???}?
???//?save?both?bulk?eps
???if((((PUSB_CFG_DESCR_LONG)TxBuffer)?->?endp_descr[0].bEndPointAddress)>0x80)
???{
??????DevEndpOUTAddr?=?(((PUSB_CFG_DESCR_LONG)TxBuffer)->?endp_descr[1].bEndPointAddress)&0x0f;
??????DevEndpINAddr??=?(((PUSB_CFG_DESCR_LONG)TxBuffer)->?endp_descr[0].bEndPointAddress)&0x0f;
???}
???else
???{
??????DevEndpOUTAddr?=?(((PUSB_CFG_DESCR_LONG)TxBuffer)->?endp_descr[0].bEndPointAddress)&0x0f;
??????DevEndpINAddr??=?(((PUSB_CFG_DESCR_LONG)TxBuffer)->?endp_descr[1].bEndPointAddress)&0x0f;
???}??
???return?Host_CtrlSetUsbConfig(((pConfigurationDescriptor)TxBuffer)->bConfigurationValue);
}

i hope that can help