📄 usbdebug.c
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Temp = USB_Device_Request.wLength;
USB_Device_Request.wLength = 0;
USB_Device_Request.wLength = (UC) Temp;
USB_Device_Request.wLength <<= 8;
Temp >>= 8;
USB_Device_Request.wLength |= Temp;
//check if the device request is vendor or class specific
if(USB_Device_Request.bmRequestType == 0xC0 ||
USB_Device_Request.bmRequestType == 0x40 ||
USB_Device_Request.bmRequestType == 0xA1 ||
USB_Device_Request.bmRequestType == 0x21)
{
//Vendor and Classs request routine
Vendor_Specific_Command();
return;
}
//decode device reuest
switch(USB_Device_Request.bRequest)
{
case Get_Descriptor :
switch(USB_Device_Request.wValue)
{
case 1 :
if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
Descriptor_Ptr = &Standard_Device_Descriptor[0]; //set pointer to device descriptor
if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
Descriptor_Ptr = &HS_Device_Descriptor[0]; //set pointer to device descriptor
count = *Descriptor_Ptr; //read in descriptor length
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = 0x12;
D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = 0;
//send descriptor
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
//check for status stage
while(!USB_Int_Flag.BITS.EP0TX)
{
if(USB_Int_Flag.BITS.SUSP ||
USB_Int_Flag.BITS.RESET)
return;
}
USB_Int_Flag.BITS.EP0TX = 0;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 0;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.VALUE = 2;
break;
case 0x0102 :
case 2 :
USB_Int_Flag.BITS.EP0RX = 0;
Temp = 64;
Descriptor_Ptr = &Standard_Config_Descriptor[0]; //set pointer to configuration descriptor
count = *Descriptor_Ptr; //get configuration Descriptor length
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
//check if only configuration descriptor required
if(count >= USB_Device_Request.wLength) //Send only Configuration descriptor
{
D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = (UC) USB_Device_Request.wLength;
D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = (UC) (USB_Device_Request.wLength >> 8);
//send descriptor
for(count = 0 ; count < USB_Device_Request.wLength ; count++)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
Descriptor_Ptr++;
}
//check for status stage
while(!USB_Int_Flag.BITS.EP0TX)
{
if(USB_Int_Flag.BITS.SUSP ||
USB_Int_Flag.BITS.RESET)
return;
}
USB_Int_Flag.BITS.EP0TX = 0;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 0;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STATUS = 1;
/*
//end of status stage
while(!USB_Int_Flag.BITS.EP0RX)
{
if(USB_Int_Flag.BITS.SUSP ||
USB_Int_Flag.BITS.RESET)
return;
}
USB_Int_Flag.BITS.EP0RX = 0;
*/
}
else //send Configuration,Interface and Endpoint descriptor
{
if(USB_Device_Request.wLength >= 32)
{
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
count--;
Descriptor_Ptr++;
}
if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
Descriptor_Ptr = &Bulk_Interface_Descriptor[0]; //set pointer to interface descriptor
if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
Descriptor_Ptr = &HS_Bulk_Interface_Descriptor[0]; //set pointer to interface descriptor
count = *Descriptor_Ptr; //get the descriptor count
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
count--;
Descriptor_Ptr++;
}
if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
Descriptor_Ptr = &Int_In_Descriptor[0]; //set pointer to interface descriptor
if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
Descriptor_Ptr = &HS_Int_In_Descriptor[0]; //set pointer to interface descriptor
count = *Descriptor_Ptr; //read in descriptor length
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
count--;
Descriptor_Ptr++;
}
if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
Descriptor_Ptr = &Int_Out_Descriptor[0]; //set pointer to interface descriptor
if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
Descriptor_Ptr = &HS_Int_Out_Descriptor[0]; //set pointer to interface descriptor
count = *Descriptor_Ptr; //read in descriptor length
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
count--;
Descriptor_Ptr++;
}
if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
Descriptor_Ptr = &Bulk_In_Descriptor[0]; //set pointer to interface descriptor
if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
Descriptor_Ptr = &HS_Bulk_In_Descriptor[0]; //set pointer to interface descriptor
count = *Descriptor_Ptr; //read in descriptor length
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
count--;
Descriptor_Ptr++;
}
if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
Descriptor_Ptr = &Bulk_Out_Descriptor[0]; //set pointer to interface descriptor
if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
Descriptor_Ptr = &HS_Bulk_Out_Descriptor[0]; //set pointer to interface descriptor
count = *Descriptor_Ptr; //read in descriptor length
while(count != 0)
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