📄 usb.c
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case USB_Default :
default :
break;
case USB_Addressed :
if(USB_Device_Request.wValue == 0)
{
Device_Config_Value = 0;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STATUS = 1;
break;
}
if(USB_Device_Request.wValue == 0x0100 ||
USB_Device_Request.wValue == 0x0200)
{
Device_Config_Value = (UC) (USB_Device_Request.wValue >> 8);
USB_Device.BITS.State = USB_Configured;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STATUS = 1;
break;
}
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 1;
while(!USB_Int_Flag.BITS.EP0SETUP)
{
if(USB_Int_Flag.BITS.SUSP ||
Kernel_Flag.BITS.Bus_Reset)
return;
}
USB_Int_Flag.BITS.EP0TX = 0;
break;
case USB_Configured :
if(USB_Device_Request.wValue == 0)
{
Device_Config_Value = 0;
USB_Device.BITS.State = USB_Addressed;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STATUS = 1;
break;
}
if(USB_Device_Request.wValue == 0x0100 ||
USB_Device_Request.wValue == 0x0200)
{
Device_Config_Value = (UC) (USB_Device_Request.wValue >> 8);
USB_Device.BITS.State = USB_Configured;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STATUS = 1;
break;
}
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 1;
while(!USB_Int_Flag.BITS.EP0SETUP)
{
if(USB_Int_Flag.BITS.SUSP ||
Kernel_Flag.BITS.Bus_Reset)
return;
}
USB_Int_Flag.BITS.EP0TX = 0;
break;
}
}
//***********************************************************************
//* *
//* Routine : *
//* Input : None *
//* Output : None *
//* Function : *
//* *
//***********************************************************************
void Get_Config_Value(void)
{
switch(USB_Device.BITS.State)
{
default :
case USB_Default :
break;
case USB_Addressed :
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = 0;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.VENDP = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.DSEN = 1;
//check for status stage
while(!USB_Int_Flag.BITS.EP0TX)
{
if(USB_Int_Flag.BITS.SUSP ||
Kernel_Flag.BITS.Bus_Reset)
return;
}
USB_Int_Flag.BITS.EP0TX = 0;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 0;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STATUS = 1;
break;
case USB_Configured :
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_DATA_PORT_LSB = Device_Config_Value;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.VENDP = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.DSEN = 1;
//check for status stage
while(!USB_Int_Flag.BITS.EP0TX)
{
if(USB_Int_Flag.BITS.SUSP ||
Kernel_Flag.BITS.Bus_Reset)
return;
}
USB_Int_Flag.BITS.EP0TX = 0;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 0;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STATUS = 1;
break;
}
}
//***********************************************************************
//* *
//* Routine : *
//* Input : None *
//* Output : None *
//* Function : *
//* *
//***********************************************************************
void Clear_Feature_Request(void)
{
switch(USB_Device.BITS.State)
{
case USB_Addressed :
if(USB_Device_Request.wLength != 0)
break;
if(USB_Device_Request.wIndex != 0)
{
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 1;
while(!USB_Int_Flag.BITS.EP0SETUP)
{
if(USB_Int_Flag.BITS.SUSP ||
Kernel_Flag.BITS.Bus_Reset)
return;
}
USB_Int_Flag.BITS.EP0TX = 0;
}
else
{
if(USB_Device_Request.wValue == 0)
{
USB_Device.BITS.Halt = 0;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STATUS = 1;
break;
}
if(USB_Device_Request.wValue == 0x0100)
{
USB_Device.BITS.Remote_Wakeup = 0;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STATUS = 1;
break;
}
}
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 1;
while(!USB_Int_Flag.BITS.EP0SETUP)
{
if(USB_Int_Flag.BITS.SUSP ||
Kernel_Flag.BITS.Bus_Reset)
return;
}
USB_Int_Flag.BITS.EP0TX = 0;
break;
case USB_Configured :
if(USB_Device_Request.wLength != 0)
break;
if(USB_Device_Request.wValue == 0)
{
switch(USB_Device_Request.wIndex)
{
case 0x8000 :
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 0;
Kernel_Flag.BITS.Endpt_Stall = 0;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_ENDPT_TYPE.BITS.ENABLE = OFF; //disable FIFO
D14_Cntrl_Reg.D14_ENDPT_TYPE.BITS.ENABLE = ON; //disable FIFO
D14_Cntrl_Reg.D14_DMA_ENDPOINT = 1;
D14_Cntrl_Reg.D14_DMA_COMMAND = CLEAR_BUFFER;
break;
case 0x0000 :
D14_Cntrl_Reg.D14_ENDPT_INDEX = 0;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 0;
Kernel_Flag.BITS.Endpt_Stall = 0;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 0;
D14_Cntrl_Reg.D14_ENDPT_TYPE.BITS.ENABLE = OFF; //disable FIFO
D14_Cntrl_Reg.D14_ENDPT_TYPE.BITS.ENABLE = ON; //disable FIFO
D14_Cntrl_Reg.D14_DMA_ENDPOINT = 0;
D14_Cntrl_Reg.D14_DMA_COMMAND = CLEAR_BUFFER;
break;
case 0x8200 :
D14_Cntrl_Reg.D14_ENDPT_INDEX = 5;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 0;
Kernel_Flag.BITS.Endpt_Stall = 0;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 5;
D14_Cntrl_Reg.D14_ENDPT_TYPE.BITS.ENABLE = OFF; //disable FIFO
D14_Cntrl_Reg.D14_ENDPT_TYPE.BITS.ENABLE = ON; //disable FIFO
D14_Cntrl_Reg.D14_DMA_ENDPOINT = 5;
D14_Cntrl_Reg.D14_DMA_COMMAND = CLEAR_BUFFER;
break;
case 0x0200 :
D14_Cntrl_Reg.D14_ENDPT_INDEX = 4;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 0;
Kernel_Flag.BITS.Endpt_Stall = 0;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 4;
D14_Cntrl_Reg.D14_ENDPT_TYPE.BITS.ENABLE = OFF; //disable FIFO
D14_Cntrl_Reg.D14_ENDPT_TYPE.BITS.ENABLE = ON; //disable FIFO
D14_Cntrl_Reg.D14_DMA_ENDPOINT = 4;
D14_Cntrl_Reg.D14_DMA_COMMAND = CLEAR_BUFFER;
break;
default :
break;
}
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STATUS = 1;
USB_Device.BITS.Halt = 0;
break;
}
if(USB_Device_Request.wValue == 0x0100)
{
USB_Device.BITS.Remote_Wakeup = 0;
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STATUS = 1;
break;
}
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 1;
while(!USB_Int_Flag.BITS.EP0SETUP)
{
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