📄 chap_9.c
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//Get_Descriptor()获取描述符
void get_descriptor(void)
{
switch(USB_Device_Request.wValue)
{
case 1://设备描述符
//选择描述符
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
//选择端点号
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
//写下发送字节数
D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = 0x12;
D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = 0;
//send descriptor
//发送描述符
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
count--;
Descriptor_Ptr++;
}
wait_ep0tx();
ep0out_ack();
break;
case 2 : //获取配置描述符
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
//选择端点号1
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
//check if only configuration descriptor required
//检查描述符长度,决定是只发送配置描述符还是描述符集合
if(count >= USB_Device_Request.wLength) //Send only Configuration descriptor
{
//写入发送字节数
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
//发送描述符
for(count = 0 ; count < USB_Device_Request.wLength ; count++)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
Descriptor_Ptr++;
}
wait_ep0tx();
ep0out_ack();
}
else //send Configuration,Interface and Endpoint descriptor
{
//发送描述符集合(配置+接口+端点)
if(USB_Device_Request.wLength >= 32)
{
//写入配置描述符
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
count--;
Descriptor_Ptr++;
}
//选择高速还是全速接口描述符
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
//写入接口描述符
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
count--;
Descriptor_Ptr++;
}
//选择高速还是全速端点1IN描述符
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
//写入端点1IN描述符
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
count--;
Descriptor_Ptr++;
}
//选择高速还是全速端点1OUT描述符
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
//写入端点1OUT描述符
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
count--;
Descriptor_Ptr++;
}
//选择高速还是全速端点2IN描述符
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
//写入端点2IN描述符
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
count--;
Descriptor_Ptr++;
}
//选择高速还是全速端点2OUT描述符
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
//写入端点2OUT描述符
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
count--;
Descriptor_Ptr++;
}
}
//使端点有效
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.VENDP = 1; //validate FIFO
wait_ep0tx();
ep0out_ack();
}
break;
case 3: //获取字符串描述符
Descriptor_Ptr = &Standard_String_ID[0]; //set pointer to interface descriptor
count = *Descriptor_Ptr; //get length
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
if(USB_Device_Request.wLength < count)
count = USB_Device_Request.wLength; //get the remaining length
D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = count;
D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = 0;
//send string ID
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
count--;
}
wait_ep0tx();
ep0out_ack();
break;
case 4:
reserved();
break;
case 5: //获取端点描述符
Temp = 0;
if((USB_Device_Request.wValue & 0x00ff) > 0x0001)
{
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 1;
while(!USB_Int_Flag.BITS.EP0SETUP)
{
//读取ISP1581中断寄存器
USB_Int_Flag.VALUE |= D14_Cntrl_Reg.D14_INT.VALUE;
//回写ISP1581中断寄存器
D14_Cntrl_Reg.D14_INT.VALUE = USB_Int_Flag.VALUE;
if(USB_Int_Flag.BITS.SUSP || USB_Int_Flag.BITS.RESET)
return;
}
USB_Int_Flag.BITS.EP0TX = 0;
}
else
{
Descriptor_Ptr = &Bulk_Out_Descriptor[0]; //set pointer to Bulk Out endpoint descriptor
count = *Descriptor_Ptr; //read in descriptor length
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
if(count >= USB_Device_Request.wLength)
{
Temp = USB_Device_Request.wLength;
//send endpoint descriptor
D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = (UC) Temp;
D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = (UC) (Temp >> 8);
for(count = 0 ; count < USB_Device_Request.wLength ; count++)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
Descriptor_Ptr++;
}
wait_ep0tx();
ep0out_ack();
}
else
{
USB_Device_Request.wLength -= count; //send Endpoint descriptor
Temp += count;
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
count--;
Descriptor_Ptr++;
}
Descriptor_Ptr = &Bulk_In_Descriptor[0]; //set pointer to Bulk In endpoint descriptor
count = *Descriptor_Ptr; //read in descriptor length
if(count >= USB_Device_Request.wLength)
{
Temp += USB_Device_Request.wLength;
//send endpoint descriptor
D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = (UC) Temp;
D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = (UC) (Temp >> 8);
for(count = 0 ; count < USB_Device_Request.wLength ; count++)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
Descriptor_Ptr++;
}
wait_ep0tx();
ep0out_ack();
}
else
{
USB_Device_Request.wLength -= count; //send Endpoint descriptor
Temp += count;
D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = (UC) Temp;
D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = (UC) (Temp >> 8);
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
count--;
Descriptor_Ptr++;
}
wait_ep0tx();
ep0out_ack();
}
}
}
break;
case 6: //获取设备限制描述符
Descriptor_Ptr = &HS_Device_Qualifier[0]; //set pointer to High Speed device descriptor
count = *Descriptor_Ptr; //read in descriptor length
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
if(USB_Device_Request.wLength < count)
{
D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = (UC) USB_Device_Request.wLength;
D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = 0;
count = USB_Device_Request.wLength;
}
else
{
D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = count;
D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = 0;
}
while(count != 0)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
Descriptor_Ptr++;
count--;
};
wait_ep0tx();
ep0out_ack();
break;
case 7 ://获取速度配置描述符
Temp = 64;
Descriptor_Ptr = &Other_Speed_Config_Descriptor[0]; //set pointer to configuration descriptor
count = *Descriptor_Ptr; //get configuration Descriptor length
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
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);
for(count = 0 ; count < USB_Device_Request.wLength ; count++)
{
D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
Descriptor_Ptr++;
}
wait_ep0tx();
ep0out_ack();
}
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++;
}
Descriptor_Ptr = &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++;
}
Descriptor_Ptr = &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++;
}
Descriptor_Ptr = &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++;
}
Descriptor_Ptr = &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++;
}
Descriptor_Ptr = &Bulk_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++;
}
}
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.VENDP = 1; //validate FIFO
wait_ep0tx();
ep0out_ack();
}
break;
case 8:
break;
default :
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 1;
while(!USB_Int_Flag.BITS.EP0SETUP)
{
//读取ISP1581中断寄存器
USB_Int_Flag.VALUE |= D14_Cntrl_Reg.D14_INT.VALUE;
//回写ISP1581中断寄存器
D14_Cntrl_Reg.D14_INT.VALUE = USB_Int_Flag.VALUE;
if(USB_Int_Flag.BITS.SUSP || USB_Int_Flag.BITS.RESET)
return;
}
USB_Int_Flag.BITS.EP0TX = 0;
break;
}
}
//Set_Address设置地址
void set_address(void)
{
USB_Int_Flag.BITS.EP0RX = 0;
D14_Cntrl_Reg.D14_ADDRESS.BITS.DEVADDR = (USB_Device_Request.wValue >> 8);//设置地址
//状态响应
ep0in_ack();
}
//Set_Config设置配置
void set_config(void)
{
USB_Int_Flag.BITS.EP0RX = 0;
if(USB_Device_Request.wValue == 0)
{
Device_Config_Value = 0;
ep0in_ack();
}
else if (USB_Device_Request.wValue == 0x0100)
{
//配置设备
Device_Config_Value = (UC) (USB_Device_Request.wValue >> 8);
// USB_Device.BITS.State = USB_Configured;
ep0in_ack();
}
else
{
D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 1;
while(!USB_Int_Flag.BITS.EP0SETUP)
{
//读取ISP1581中断寄存器
USB_Int_Flag.VALUE |= D14_Cntrl_Reg.D14_INT.VALUE;
//回写ISP1581中断寄存器
D14_Cntrl_Reg.D14_INT.VALUE = USB_Int_Flag.VALUE;
if(USB_Int_Flag.BITS.SUSP || USB_Int_Flag.BITS.RESET)
return;
}
USB_Int_Flag.BITS.EP0TX = 0;
}
}
//Get_Config获取配置
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