www.pudn.com > arm_uDisk.rar > USBSETUP.C
/**************************************************************
NAME: usbsetup.c
DESC: process the USB setup stage operations.
HISTORY:
MAR.25.2002:purnnamu: S3C2400X usbsetup.c is ported for S3C2410X.
AUG.20.2002:purnnamu: rEP0_CSR should be used instead of rOUT_CSR1_REG for EP0 macros.
***************************************************************/
#include
#include "option.h"
#include "2410addr.h"
#include "2410lib.h"
#include "def.h"
#include "2410usb.h"
#include "usbmain.h"
#include "usb.h"
#include "usblib.h"
#include "usbsetup.h"
// *** End point information ***
// EP0: control
// EP1: bulk in end point
// EP2: not used
// EP3: bulk out end point
// EP4: not used
// *** VERY IMPORTANT NOTE ***
// Every descriptor size of EP0 should be 8n+m(m=1~7).
// Otherwise, USB will not operate normally because the program
// doesn't prepare the case that the descriptor size is 8n+0.
// If the size of a descriptor is 8n, the 0 length packit should be sent.
// Special thanks to E.S.Choi for reminding me of this USB specification.
// ===================================================================
// All following commands will operate only in case
// - ep0_csr is valid.
// ===================================================================
#define CLR_EP0_OUT_PKT_RDY() rEP0_CSR=( ep0_csr & (~EP0_WR_BITS)| \
EP0_SERVICED_OUT_PKT_RDY )
#define CLR_EP0_OUTPKTRDY_DATAEND() rEP0_CSR=( ep0_csr & (~EP0_WR_BITS)| \
(EP0_SERVICED_OUT_PKT_RDY|EP0_DATA_END) )
#define SET_EP0_IN_PKT_RDY() rEP0_CSR=( ep0_csr & (~EP0_WR_BITS)| \
(EP0_IN_PKT_READY) )
#define SET_EP0_INPKTRDY_DATAEND() rEP0_CSR=( ep0_csr & (~EP0_WR_BITS)| \
(EP0_IN_PKT_READY|EP0_DATA_END) )
#define CLR_EP0_SETUP_END() rEP0_CSR=( ep0_csr & (~EP0_WR_BITS)| \
(EP0_SERVICED_SETUP_END) )
#define CLR_EP0_SENT_STALL() rEP0_CSR=( ep0_csr & (~EP0_WR_BITS)& \
(~EP0_SENT_STALL) )
#define FLUSH_EP0_FIFO() {while(rOUT_FIFO_CNT1_REG)rEP0_FIFO;}
U32 ep0State; //U32=Unsigned int (32bit)
U32 ep0SubState;
extern volatile int isUsbdSetConfiguration;
struct USB_SETUP_DATA descSetup;
struct USB_DEVICE_DESCRIPTOR descDev;
struct USB_CONFIGURATION_DESCRIPTOR descConf;
struct USB_INTERFACE_DESCRIPTOR descIf;
struct USB_ENDPOINT_DESCRIPTOR descEndpt0;
struct USB_ENDPOINT_DESCRIPTOR descEndpt1;
static const U8 descStr0[]={
4,STRING_TYPE,LANGID_US_L,LANGID_US_H, //codes representing languages
};//Total 4 string
#ifdef _FOR_UDISK_
static const U8 descStr1_1[18]= //设备序列号
{0x12,0x03,0x32,0x00,0x30,0x00,0x37,0x00,0x31,0x00,0x30,0x00,0x39,0x00,0x38,0x00,0x32,0x00};
static const U8 descStr2_1[]={ //Product
(0x2a+2+2),STRING_TYPE,
'U',0x0,'S',0x0,'B',0x0,' ',0x0,'M',0x0,'a',0x0,'s',0x0,'s',0x0,
' ',0x0,'S',0x0,'t',0x0,'o',0x0,'r',0x0,'a',0x0,'g',0x0,'e',0x0,
' ',0x0,'D',0x0,'e',0x0,'v',0x0,'i',0x0,'c',0x0,'e',0x0
};//Total 46 string
#endif
/*
#define STRING_TYPE=(3)
#define LANGID_US_L=(0x09)
#define LANGID_US_H=(0x04)
*/
static const U8 descStr1[]={ //Manufacturer
(0x14+2),STRING_TYPE,
'S',0x0,'y',0x0,'s',0x0,'t',0x0,'e',0x0,'m',0x0,' ',0x0,'M',0x0,
'C',0x0,'U',0x0,
};//Total 22 string
static const U8 descStr2[]={ //Product
(0x2a+2+2),STRING_TYPE,
'U',0x0,'S',0x0,'B',0x0,' ',0x0,'M',0x0,'a',0x0,'s',0x0,'s',0x0,
' ',0x0,'S',0x0,'t',0x0,'o',0x0,'r',0x0,'a',0x0,'g',0x0,'e',0x0,
' ',0x0,'D',0x0,'e',0x0,'v',0x0,'i',0x0,'c',0x0,'e',0x0
};//Total 44 string
void Ep0Handler(void)
{
static int ep0SubState;
int i;
U8 ep0_csr;
#ifdef _FOR_UDISK_
unsigned char max_LUN=0; //只有一个逻辑单元
#endif
rINDEX_REG=0;
ep0_csr=rEP0_CSR;//Push to buffer
//DbgPrintf("<0:%x]",ep0_csr);
//DATAEND interrupt(ep0_csr==0x0) will be ignored
//because ep0State==EP0_STATE_INIT when the DATAEND interrupt is issued.
if(ep0_csr & EP0_SETUP_END)//define EP0_SETUP_END=0x10
{
// Host may end GET_DESCRIPTOR operation without completing the IN data stage.
// If host does that, SETUP_END bit will be set.
// OUT_PKT_RDY has to be also cleared because status stage sets OUT_PKT_RDY to 1.
//DbgPrintf("[SETUPEND]");
CLR_EP0_SETUP_END();
if(ep0_csr & EP0_OUT_PKT_READY)
{
FLUSH_EP0_FIFO(); //(???)
//I think this isn't needed because EP0 flush is done automatically.
CLR_EP0_OUT_PKT_RDY();
}
ep0State=EP0_STATE_INIT;//#define EP0_STATE_INIT=0
return;
}
//I think that EP0_SENT_STALL will not be set to 1.
if(ep0_csr & EP0_SENT_STALL)
{
//DbgPrintf("[STALL]");
CLR_EP0_SENT_STALL();
if(ep0_csr & EP0_OUT_PKT_READY)
{
CLR_EP0_OUT_PKT_RDY();
}
ep0State=EP0_STATE_INIT;//#define EP0_STATE_INIT=0
return;
}
if((ep0_csr & EP0_OUT_PKT_READY) && (ep0State==EP0_STATE_INIT))
{
RdPktEp0((U8 *)&descSetup,EP0_PKT_SIZE);//Read data from EP0_FIFO
#ifdef _FOR_UDISK_
CLR_EP0_OUT_PKT_RDY();
#endif
//PrintEp0Pkt((U8 *)(&descSetup)); //DEBUG
switch(descSetup.bRequest)//SW1
{
#ifdef _FOR_UDISK_
case 0xFE:
// CLR_EP0_OUT_PKT_RDY();
if(USBD_flg==1)
{
if(descSetup.bmRequestType==0xA1)
{
WrPktEp0((U8 *)&max_LUN,1);
SET_EP0_IN_PKT_RDY();
}
}
break;
#endif
case GET_DESCRIPTOR://0x06
switch(descSetup.bValueH)//SW2
{
case DEVICE_TYPE://0x01
//DbgPrintf("[GDD]");
#ifndef _FOR_UDISK_
CLR_EP0_OUT_PKT_RDY();
#endif
ep0State=EP0_STATE_GD_DEV_0;
break;
case CONFIGURATION_TYPE://0x02
//DbgPrintf("[GDC]");
#ifndef _FOR_UDISK_
CLR_EP0_OUT_PKT_RDY();
#endif
if((descSetup.bLengthL+(descSetup.bLengthH<<8))>0x09)
//bLengthH should be used for bLength=0x209 at WIN2K.
ep0State=EP0_STATE_GD_CFG_0; //for WIN98,WIN2K
else
ep0State=EP0_STATE_GD_CFG_ONLY_0; //for WIN2K
break;
case STRING_TYPE://0x03
//DbgPrintf("[GDS]");
#ifndef _FOR_UDISK_
CLR_EP0_OUT_PKT_RDY();
#endif
switch(descSetup.bValueL)//SW3
{
case 0:
ep0State=EP0_STATE_GD_STR_I0;
break;
case 1:
ep0State=EP0_STATE_GD_STR_I1;
break;
case 2:
ep0State=EP0_STATE_GD_STR_I2;
break;
default:
//DbgPrintf("[UE:STRI?]");
break;
}//End of SW3
ep0SubState=0;
break;
case INTERFACE_TYPE:
//DbgPrintf("[GDI]");
#ifndef _FOR_UDISK_
CLR_EP0_OUT_PKT_RDY();
#endif
ep0State=EP0_STATE_GD_IF_ONLY_0; //for WIN98
break;
case ENDPOINT_TYPE:
//DbgPrintf("[GDE]");
#ifndef _FOR_UDISK_
CLR_EP0_OUT_PKT_RDY();
#endif
switch(descSetup.bValueL&0xf)//SW4
{
case 0:
ep0State=EP0_STATE_GD_EP0_ONLY_0;
break;
case 1:
ep0State=EP0_STATE_GD_EP1_ONLY_0;
break;
default:
//DbgPrintf("[UE:GDE?]");
break;
}//End of SW4
break;
default:
//DbgPrintf("[UE:GD?]");
break;
}//End of SW2
break;
case SET_ADDRESS:
//DbgPrintf("[SA:%d]",descSetup.bValueL);
#ifdef _FOR_UDISK_
if(USBD_flg==1)
WrPktEp0(0,0);
#endif
rFUNC_ADDR_REG=descSetup.bValueL | 0x80;
CLR_EP0_OUTPKTRDY_DATAEND(); //Because of no data control transfers.
ep0State=EP0_STATE_INIT;
break;
case SET_CONFIGURATION:
//DbgPrintf("[SC]");
#ifdef _FOR_UDISK_
if(USBD_flg==1)
WrPktEp0(0,0);
#endif
CLR_EP0_OUTPKTRDY_DATAEND(); //Because of no data control transfers.
ep0State=EP0_STATE_INIT;
isUsbdSetConfiguration=1;
break;
default:
//DbgPrintf("[UE:SETUP=%x]",descSetup.bRequest);
CLR_EP0_OUTPKTRDY_DATAEND(); //Because of no data control transfers.
ep0State=EP0_STATE_INIT;
break;
}//End of SW1
}//
switch(ep0State)
{
case EP0_STATE_INIT:
break;
//=== GET_DESCRIPTOR:DEVICE ===
// Send USB device descriptor to USB host, total 18 bytes.
case EP0_STATE_GD_DEV_0:
//DbgPrintf("[GDD0]");
//Uart_Printf("start of USB_DEVICE_DESCRIPTOR\n");
WrPktEp0((U8 *)&descDev+0x00,8);
//Write 8 bytes data (0-7) of USB_DEVICE_DESCRIPTOR into EP0_FIFO
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_DEV_1;
break;
case EP0_STATE_GD_DEV_1:
//DbgPrintf("[GDD1]");
WrPktEp0((U8 *)&descDev+0x08,8);
//Write 8 bytes data (8-15) of USB_DEVICE_DESCRIPTOR into EP0_FIFO
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_DEV_2;
break;
case EP0_STATE_GD_DEV_2:
//DbgPrintf("[GDD2]");
WrPktEp0((U8 *)&descDev+0x10,2); //8+8+2=0x12
//Write 2 bytes data (16-17) of USB_DEVICE_DESCRIPTOR into EP0_FIFO
SET_EP0_INPKTRDY_DATAEND();
ep0State=EP0_STATE_INIT;
//Uart_Printf("end of USB_DEVICE_DESCRIPTOR\n");
break;
//=== GET_DESCRIPTOR:CONFIGURATION+INTERFACE+ENDPOINT0+ENDPOINT1 ===
//Windows98 gets these 4 descriptors all together by issuing only a request.
//Windows2000 gets each descriptor seperately.
case EP0_STATE_GD_CFG_0:
//DbgPrintf("[GDC0]");
WrPktEp0((U8 *)&descConf+0x00,8); //EP0_PKT_SIZE
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_CFG_1;
break;
case EP0_STATE_GD_CFG_1:
//DbgPrintf("[GDC1]");
WrPktEp0((U8 *)&descConf+0x08,1);
WrPktEp0((U8 *)&descIf+0x00,7);
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_CFG_2;
break;
case EP0_STATE_GD_CFG_2:
//DbgPrintf("[GDC2]");
WrPktEp0((U8 *)&descIf+0x07,2);
WrPktEp0((U8 *)&descEndpt0+0x00,6);
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_CFG_3;
break;
case EP0_STATE_GD_CFG_3:
//DbgPrintf("[GDC3]");
WrPktEp0((U8 *)&descEndpt0+0x06,1);
WrPktEp0((U8 *)&descEndpt1+0x00,7);
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_CFG_4;
break;
case EP0_STATE_GD_CFG_4:
//DbgPrintf("[GDC4]");
//zero length data packit
SET_EP0_INPKTRDY_DATAEND();
ep0State=EP0_STATE_INIT;
break;
//=== GET_DESCRIPTOR:CONFIGURATION ONLY , For Win2K only ===
// Send USB configuration descriptor to USB host, total 9 bytes.
case EP0_STATE_GD_CFG_ONLY_0:
//DbgPrintf("[GDCO0]");
WrPktEp0((U8 *)&descConf+0x00,8); //EP0_PKT_SIZE
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_CFG_ONLY_1;
break;
case EP0_STATE_GD_CFG_ONLY_1:
//DbgPrintf("[GDCO1]");
WrPktEp0((U8 *)&descConf+0x08,1);
SET_EP0_INPKTRDY_DATAEND();
ep0State=EP0_STATE_INIT;
break;
//=== GET_DESCRIPTOR:INTERFACE ONLY===
// Send USB interface descriptor to USB host, total 9 bytes.
case EP0_STATE_GD_IF_ONLY_0:
//DbgPrintf("[GDI0]");
WrPktEp0((U8 *)&descIf+0,8);
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_IF_ONLY_1;
break;
case EP0_STATE_GD_IF_ONLY_1:
//DbgPrintf("[GDI1]");
WrPktEp0((U8 *)&descIf+8,1);
SET_EP0_INPKTRDY_DATAEND();
ep0State=EP0_STATE_INIT;
break;
//=== GET_DESCRIPTOR:ENDPOINT 0 ONLY===
// Send USB ENDPOINT_0 descriptor to USB host, total 7 bytes.
case EP0_STATE_GD_EP0_ONLY_0:
//DbgPrintf("[GDE00]");
WrPktEp0((U8 *)&descEndpt0+0,7);
SET_EP0_INPKTRDY_DATAEND();
ep0State=EP0_STATE_INIT;
break;
//=== GET_DESCRIPTOR:ENDPOINT 1 ONLY===
// Send USB ENDPOINT_1 descriptor to USB host, total 7 bytes.
case EP0_STATE_GD_EP1_ONLY_0:
//DbgPrintf("[GDE10]");
WrPktEp0((U8 *)&descEndpt1+0,7);
SET_EP0_INPKTRDY_DATAEND();
ep0State=EP0_STATE_INIT;
break;
//=== GET_DESCRIPTOR:STRING ===
case EP0_STATE_GD_STR_I0:
//DbgPrintf("[GDS0_0]");
#ifdef _FOR_UDISK_
if(USBD_flg==1)
{
if(descSetup.bLengthL+(descSetup.bLengthH<<8) <4)
WrPktEp0((U8 *)descStr0, /*4*/descSetup.bLengthL+(descSetup.bLengthH<<8) );
else
SET_EP0_INPKTRDY_DATAEND();
}
else if(USBD_flg==0)
{
WrPktEp0((U8 *)descStr0, 4 );
SET_EP0_INPKTRDY_DATAEND();
}
#else
WrPktEp0((U8 *)descStr0, 4 );
SET_EP0_INPKTRDY_DATAEND();
#endif
ep0State=EP0_STATE_INIT;
ep0SubState=0;
break;
case EP0_STATE_GD_STR_I1:
//DbgPrintf("[GDS1_%d]",ep0SubState);
#ifndef _FOR_UDISK_
if((ep0SubState*EP0_PKT_SIZE+EP0_PKT_SIZE) < sizeof(descStr1))
{
WrPktEp0((U8 *)descStr1+(ep0SubState*EP0_PKT_SIZE),EP0_PKT_SIZE);
SET_EP0_IN_PKT_RDY();
ep0State=EP0_STATE_GD_STR_I1;
ep0SubState++;
}
else
{
WrPktEp0((U8 *)descStr1+(ep0SubState*EP0_PKT_SIZE),
sizeof(descStr1)-(ep0SubState*EP0_PKT_SIZE));
SET_EP0_INPKTRDY_DATAEND();
ep0State=EP0_STATE_INIT;
ep0SubState=0;
}
#else
if(USBD_flg==1)
{
while(1)
{
//Uart_Printf("[GDS1_%d]",ep0SubState);
if(descSetup.bLengthL+(descSetup.bLengthH<<8) +++
descConf.wTotalLengthH=0;
descConf.bNumInterfaces=1;
//dbg descConf.bConfigurationValue=2; //why 2? There's no reason.
descConf.bConfigurationValue=1;
descConf.iConfiguration=0;
descConf.bmAttributes=CONF_ATTR_DEFAULT;//bus powered only.
descConf.maxPower=25; //draws 50mA current from the USB bus.
//Standard interface descriptor
descIf.bLength=0x9;
descIf.bDescriptorType=INTERFACE_TYPE;//0x04
descIf.bInterfaceNumber=0x0;
descIf.bAlternateSetting=0x0; //?
descIf.bNumEndpoints=2; //# of endpoints except EP0
descIf.bInterfaceClass=0xff; //0x0 ?
descIf.bInterfaceSubClass=0x0;
descIf.bInterfaceProtocol=0x0;
descIf.iInterface=0x0;
//Standard endpoint0 descriptor
descEndpt0.bLength=0x7;
descEndpt0.bDescriptorType=ENDPOINT_TYPE;//0x05
descEndpt0.bEndpointAddress=1|EP_ADDR_IN;//0x80|0x01=0x81 // 2400Xendpoint 1 is IN endpoint.
descEndpt0.bmAttributes=EP_ATTR_BULK;//0x02,transmition type = Bulk
descEndpt0.wMaxPacketSizeL=EP1_PKT_SIZE; //64
descEndpt0.wMaxPacketSizeH=0x0;
descEndpt0.bInterval=0x0; //not used
//Standard endpoint1 descriptor
descEndpt1.bLength=0x7;
descEndpt1.bDescriptorType=ENDPOINT_TYPE;//0x05
descEndpt1.bEndpointAddress=3|EP_ADDR_OUT;//0x00|0x03=0x03 // 2400X endpoint 3 is OUT endpoint.
descEndpt1.bmAttributes=EP_ATTR_BULK;//0x02,transmition type = Bulk
descEndpt1.wMaxPacketSizeL=EP3_PKT_SIZE; //64
descEndpt1.wMaxPacketSizeH=0x0;
descEndpt1.bInterval=0x0; //not used
#else
if(USBD_flg==1)
{
//Uart_Printf("InitDescriptorTable()\n");
//Standard device descriptor
descDev.bLength=0x12;//EP0_DEV_DESC_SIZE=0x12 bytes
descDev.bDescriptorType=DEVICE_TYPE;
descDev.bcdUSBL=0x10;
descDev.bcdUSBH=0x01;//Indicate USB Ver 1.10
descDev.bDeviceClass=0x00;//Vendor specific
descDev.bDeviceSubClass=0x0;
descDev.bDeviceProtocol=0x0;//?? should be 0xff
descDev.bMaxPacketSize0=0x8;//EndPoint_0's max Packet Size
descDev.idVendorL=0x71;//0x40;//Vendor ID_h
descDev.idVendorH=0x11;//0x52;//Vendor ID_l
descDev.idProductL=0xf0;//0x03;//Product ID_h
descDev.idProductH=0xff;//0x04;//Product ID_l
descDev.bcdDeviceL=0x00;//Product version_h
descDev.bcdDeviceH=0x01;//Product version_l
descDev.iManufacturer=0x1;//index of string descriptor index
descDev.iProduct=0x2;//index of string descriptor index
descDev.iSerialNumber=0x0;//Product serial number string descriptor index
descDev.bNumConfigurations=0x1;//Device descriptor number
//Standard configuration descriptor
descConf.bLength=0x09;
descConf.bDescriptorType=CONFIGURATION_TYPE;//0x02
descConf.wTotalLengthL=0x20; //+++
descConf.wTotalLengthH=0;
descConf.bNumInterfaces=1;
//dbg descConf.bConfigurationValue=2; //why 2? There's no reason.
descConf.bConfigurationValue=1;
descConf.iConfiguration=0;
descConf.bmAttributes=CONF_ATTR_DEFAULT;//0x0a;//bus powered only.
descConf.maxPower=0x32;//25; //draws 50mA current from the USB bus.
//Standard interface descriptor
descIf.bLength=0x9;
descIf.bDescriptorType=INTERFACE_TYPE;//0x04
descIf.bInterfaceNumber=0x0;
descIf.bAlternateSetting=0x0; //?
descIf.bNumEndpoints=2; //# of endpoints except EP0
descIf.bInterfaceClass=0x08; //0x0 ?
descIf.bInterfaceSubClass=0x06;//0x04;//0x04:软盘，oxo6:普通邋邋SCSI
descIf.bInterfaceProtocol=0x50;
descIf.iInterface=0x0;
//Standard endpoint1 descriptor(IN)
descEndpt0.bLength=0x7;
descEndpt0.bDescriptorType=ENDPOINT_TYPE;//0x05
descEndpt0.bEndpointAddress=1|EP_ADDR_IN;//0x80|0x01=0x81 // 2400Xendpoint 1 is IN endpoint.
descEndpt0.bmAttributes=EP_ATTR_BULK;//0x02,transmition type = Bulk
descEndpt0.wMaxPacketSizeL=EP1_PKT_SIZE; //64
descEndpt0.wMaxPacketSizeH=0x0;
descEndpt0.bInterval=0x0; //not used
//Standard endpoint3 descriptor(OUT)
descEndpt1.bLength=0x7;
descEndpt1.bDescriptorType=ENDPOINT_TYPE;//0x05
descEndpt1.bEndpointAddress=3|EP_ADDR_OUT;//0x00|0x03=0x03 // 2400X endpoint 3 is OUT endpoint.
descEndpt1.bmAttributes=EP_ATTR_BULK;//0x02,transmition type = Bulk
descEndpt1.wMaxPacketSizeL=EP3_PKT_SIZE; //64
descEndpt1.wMaxPacketSizeH=0x0;
descEndpt1.bInterval=0x0; //not used
}
else if(USBD_flg==0)
{
//Standard device descriptor
descDev.bLength=0x12;//EP0_DEV_DESC_SIZE=0x12 bytes
descDev.bDescriptorType=DEVICE_TYPE;
descDev.bcdUSBL=0x10;
descDev.bcdUSBH=0x01;//Indicate USB Ver 1.10
descDev.bDeviceClass=0xFF;//Vendor specific
descDev.bDeviceSubClass=0x0;
descDev.bDeviceProtocol=0x0;//?? should be 0xff
descDev.bMaxPacketSize0=0x8;//EndPoint_0's max Packet Size
descDev.idVendorL=0x45;//Vendor ID_h
descDev.idVendorH=0x53;//Vendor ID_l
descDev.idProductL=0x34;//Product ID_h
descDev.idProductH=0x12;//Product ID_l
descDev.bcdDeviceL=0x00;//Product version_h
descDev.bcdDeviceH=0x01;//Product version_l
descDev.iManufacturer=0x1;//index of string descriptor index
descDev.iProduct=0x2;//index of string descriptor index
descDev.iSerialNumber=0x0;//Product serial number string descriptor index
descDev.bNumConfigurations=0x1;//Device descriptor number
//Standard configuration descriptor
descConf.bLength=0x09;
descConf.bDescriptorType=CONFIGURATION_TYPE;//0x02
descConf.wTotalLengthL=0x20; //+++
descConf.wTotalLengthH=0;
descConf.bNumInterfaces=1;
//dbg descConf.bConfigurationValue=2; //why 2? There's no reason.
descConf.bConfigurationValue=1;
descConf.iConfiguration=0;
descConf.bmAttributes=CONF_ATTR_DEFAULT;//bus powered only.
descConf.maxPower=25; //draws 50mA current from the USB bus.
//Standard interface descriptor
descIf.bLength=0x9;
descIf.bDescriptorType=INTERFACE_TYPE;//0x04
descIf.bInterfaceNumber=0x0;
descIf.bAlternateSetting=0x0; //?
descIf.bNumEndpoints=2; //# of endpoints except EP0
descIf.bInterfaceClass=0xff; //0x0 ?
descIf.bInterfaceSubClass=0x0;
descIf.bInterfaceProtocol=0x0;
descIf.iInterface=0x0;
//Standard endpoint0 descriptor
descEndpt0.bLength=0x7;
descEndpt0.bDescriptorType=ENDPOINT_TYPE;//0x05
descEndpt0.bEndpointAddress=1|EP_ADDR_IN;//0x80|0x01=0x81 // 2400Xendpoint 1 is IN endpoint.
descEndpt0.bmAttributes=EP_ATTR_BULK;//0x02,transmition type = Bulk
descEndpt0.wMaxPacketSizeL=EP1_PKT_SIZE; //64
descEndpt0.wMaxPacketSizeH=0x0;
descEndpt0.bInterval=0x0; //not used
//Standard endpoint1 descriptor
descEndpt1.bLength=0x7;
descEndpt1.bDescriptorType=ENDPOINT_TYPE;//0x05
descEndpt1.bEndpointAddress=3|EP_ADDR_OUT;//0x00|0x03=0x03 // 2400X endpoint 3 is OUT endpoint.
descEndpt1.bmAttributes=EP_ATTR_BULK;//0x02,transmition type = Bulk
descEndpt1.wMaxPacketSizeL=EP3_PKT_SIZE; //64
descEndpt1.wMaxPacketSizeH=0x0;
descEndpt1.bInterval=0x0; //not used
}
#endif
}