/**
  ******************************************************************************
  * @file    usb_prop.c
  * @author  MCD Application Team
  * @version V4.0.0
  * @date    21-January-2013
  * @brief   All processing related to Virtual Com Port Demo
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
  */


// Includes
#include "usb_lib.h"
#include "usb_conf.h"
#include "usb_prop.h"
#include "usb_desc.h"
#include "usb_pwr.h"
#include "hw_config.h"


// Private variables
uint8_t Request = 0;

LINE_CODING linecoding = {
		115200, // baud rate
		0x00,   // stop bits - 1
		0x00,   // parity - none
		0x08    // no. of bits 8
};


// Structures initializations
DEVICE Device_Table = {
		EP_NUM,
		1
};

DEVICE_PROP Device_Property = {
		Virtual_Com_Port_Init,
		Virtual_Com_Port_Reset,
		Virtual_Com_Port_Status_In,
		Virtual_Com_Port_Status_Out,
		Virtual_Com_Port_Data_Setup,
		Virtual_Com_Port_NoData_Setup,
		Virtual_Com_Port_Get_Interface_Setting,
		Virtual_Com_Port_GetDeviceDescriptor,
		Virtual_Com_Port_GetConfigDescriptor,
		Virtual_Com_Port_GetStringDescriptor,
		0,
		0x40 // MAX PACKET SIZE
};

USER_STANDARD_REQUESTS User_Standard_Requests = {
		Virtual_Com_Port_GetConfiguration,
		Virtual_Com_Port_SetConfiguration,
		Virtual_Com_Port_GetInterface,
		Virtual_Com_Port_SetInterface,
		Virtual_Com_Port_GetStatus,
		Virtual_Com_Port_ClearFeature,
		Virtual_Com_Port_SetEndPointFeature,
		Virtual_Com_Port_SetDeviceFeature,
		Virtual_Com_Port_SetDeviceAddress
};

ONE_DESCRIPTOR Device_Descriptor = {
		(uint8_t*)Virtual_Com_Port_DeviceDescriptor,
		VIRTUAL_COM_PORT_SIZ_DEVICE_DESC
};

ONE_DESCRIPTOR Config_Descriptor = {
		(uint8_t*)Virtual_Com_Port_ConfigDescriptor,
		VIRTUAL_COM_PORT_SIZ_CONFIG_DESC
};

ONE_DESCRIPTOR String_Descriptor[4] = {
		{(uint8_t*)Virtual_Com_Port_StringLangID,  VIRTUAL_COM_PORT_SIZ_STRING_LANGID},
		{(uint8_t*)Virtual_Com_Port_StringVendor,  VIRTUAL_COM_PORT_SIZ_STRING_VENDOR},
		{(uint8_t*)Virtual_Com_Port_StringProduct, VIRTUAL_COM_PORT_SIZ_STRING_PRODUCT},
		{(uint8_t*)Virtual_Com_Port_StringSerial,  VIRTUAL_COM_PORT_SIZ_STRING_SERIAL}
};


// Private functions

/*******************************************************************************
* Function Name  : Virtual_Com_Port_init.
* Description    : Virtual COM Port Mouse init routine.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Virtual_Com_Port_Init(void) {
	// Update the serial number string descriptor with the data from the unique ID
	Get_SerialNum();
	pInformation->Current_Configuration = 0;
	// Connect the device
	PowerOn();
	// Perform basic device initialization operations
	USB_SIL_Init();
	bDeviceState = UNCONNECTED;
}

/*******************************************************************************
* Function Name  : Virtual_Com_Port_Reset
* Description    : Virtual_Com_Port Mouse reset routine
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Virtual_Com_Port_Reset(void) {
	// Set Virtual_Com_Port DEVICE as not configured
	pInformation->Current_Configuration = 0;
	// Current Feature initialization
	pInformation->Current_Feature = Virtual_Com_Port_ConfigDescriptor[7];
	// Set Virtual_Com_Port DEVICE with the default Interface
	pInformation->Current_Interface = 0;
//	*BTABLE = BTABLE_ADDRESS & 0xFFF8;
	*BTABLE = BTABLE_ADDRESS; // BTABLE_ADDRESS = 0

	// Initialize Endpoint 0
	SetEPType(ENDP0,EP_CONTROL);
	SetEPTxStatus(ENDP0,EP_TX_STALL);
	SetEPRxAddr(ENDP0,ENDP0_RXADDR);
	SetEPTxAddr(ENDP0,ENDP0_TXADDR);
	Clear_Status_Out(ENDP0);
	SetEPRxCount(ENDP0,Device_Property.MaxPacketSize);
	SetEPRxValid(ENDP0);

	// Initialize Endpoint 1
	SetEPType(ENDP1,EP_BULK);
	SetEPTxAddr(ENDP1,ENDP1_TXADDR);
	SetEPTxStatus(ENDP1,EP_TX_NAK);
	SetEPRxStatus(ENDP1,EP_RX_DIS);

	// Initialize Endpoint 2
	SetEPType(ENDP2,EP_INTERRUPT);
	SetEPTxAddr(ENDP2,ENDP2_TXADDR);
	SetEPRxStatus(ENDP2,EP_RX_DIS);
	SetEPTxStatus(ENDP2,EP_TX_NAK);

	// Initialize Endpoint 3
	SetEPType(ENDP3,EP_BULK);
	SetEPRxAddr(ENDP3,ENDP3_RXADDR);
	SetEPRxCount(ENDP3,VIRTUAL_COM_PORT_DATA_SIZE);
	SetEPRxStatus(ENDP3,EP_RX_VALID);
	SetEPTxStatus(ENDP3,EP_TX_DIS);

	// Set this device to response on default address
	SetDeviceAddress(0);

	bDeviceState = ATTACHED;
}

/*******************************************************************************
* Function Name  : Virtual_Com_Port_SetConfiguration.
* Description    : Update the device state to configured.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Virtual_Com_Port_SetConfiguration(void) {
	if (Device_Info.Current_Configuration) bDeviceState = CONFIGURED;
}

/*******************************************************************************
* Function Name  : Virtual_Com_Port_SetConfiguration.
* Description    : Update the device state to addressed.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Virtual_Com_Port_SetDeviceAddress(void) {
	bDeviceState = ADDRESSED;
}

/*******************************************************************************
* Function Name  : Virtual_Com_Port_Status_In.
* Description    : Virtual COM Port Status In Routine.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Virtual_Com_Port_Status_In(void) {
	if (Request == SET_LINE_CODING) Request = 0;
}

/*******************************************************************************
* Function Name  : Virtual_Com_Port_Status_Out
* Description    : Virtual COM Port Status OUT Routine.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Virtual_Com_Port_Status_Out(void) {
	// No actions here
}

/*******************************************************************************
* Function Name  : Virtual_Com_Port_Data_Setup
* Description    : handle the data class specific requests
* Input          : Request Nb.
* Output         : None.
* Return         : USB_UNSUPPORT or USB_SUCCESS.
*******************************************************************************/
RESULT Virtual_Com_Port_Data_Setup(uint8_t RequestNo) {
	uint8_t *(*CopyRoutine)(uint16_t);

	CopyRoutine = NULL;
	if (RequestNo == GET_LINE_CODING) {
		if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) {
			CopyRoutine = Virtual_Com_Port_GetLineCoding;
		}
	} else if (RequestNo == SET_LINE_CODING) {
		if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) {
			CopyRoutine = Virtual_Com_Port_SetLineCoding;
		}
		Request = SET_LINE_CODING;
	}

	if (CopyRoutine == NULL) return USB_UNSUPPORT;

	pInformation->Ctrl_Info.CopyData    = CopyRoutine;
	pInformation->Ctrl_Info.Usb_wOffset = 0;
	(*CopyRoutine)(0);

	return USB_SUCCESS;
}

/*******************************************************************************
* Function Name  : Virtual_Com_Port_NoData_Setup.
* Description    : handle the no data class specific requests.
* Input          : Request Nb.
* Output         : None.
* Return         : USB_UNSUPPORT or USB_SUCCESS.
*******************************************************************************/
RESULT Virtual_Com_Port_NoData_Setup(uint8_t RequestNo) {
	if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) {
		if (RequestNo == SET_COMM_FEATURE) {
			return USB_SUCCESS;
		} else if (RequestNo == SET_CONTROL_LINE_STATE) return USB_SUCCESS;
	}

	return USB_UNSUPPORT;
}

/*******************************************************************************
* Function Name  : Virtual_Com_Port_GetDeviceDescriptor.
* Description    : Gets the device descriptor.
* Input          : Length.
* Output         : None.
* Return         : The address of the device descriptor.
*******************************************************************************/
uint8_t *Virtual_Com_Port_GetDeviceDescriptor(uint16_t Length) {
	return Standard_GetDescriptorData(Length,&Device_Descriptor);
}

/*******************************************************************************
* Function Name  : Virtual_Com_Port_GetConfigDescriptor.
* Description    : get the configuration descriptor.
* Input          : Length.
* Output         : None.
* Return         : The address of the configuration descriptor.
*******************************************************************************/
uint8_t *Virtual_Com_Port_GetConfigDescriptor(uint16_t Length) {
	return Standard_GetDescriptorData(Length,&Config_Descriptor);
}

/*******************************************************************************
* Function Name  : Virtual_Com_Port_GetStringDescriptor
* Description    : Gets the string descriptors according to the needed index
* Input          : Length.
* Output         : None.
* Return         : The address of the string descriptors.
*******************************************************************************/
uint8_t *Virtual_Com_Port_GetStringDescriptor(uint16_t Length) {
	uint8_t wValue0 = pInformation->USBwValue0;

	return (wValue0 > 4) ? NULL : Standard_GetDescriptorData(Length,&String_Descriptor[wValue0]);
}

/*******************************************************************************
* Function Name  : Virtual_Com_Port_Get_Interface_Setting.
* Description    : test the interface and the alternate setting according to the
*                  supported one.
* Input1         : uint8_t: Interface : interface number.
* Input2         : uint8_t: AlternateSetting : Alternate Setting number.
* Output         : None.
* Return         : The address of the string descriptors.
*******************************************************************************/
RESULT Virtual_Com_Port_Get_Interface_Setting(uint8_t Interface, uint8_t AlternateSetting) {
	if (AlternateSetting > 0) return USB_UNSUPPORT; else if (Interface > 1) return USB_UNSUPPORT;

	return USB_SUCCESS;
}

/*******************************************************************************
* Function Name  : Virtual_Com_Port_GetLineCoding.
* Description    : send the linecoding structure to the PC host.
* Input          : Length.
* Output         : None.
* Return         : Linecoding structure base address.
*******************************************************************************/
uint8_t *Virtual_Com_Port_GetLineCoding(uint16_t Length) {
	if (Length == 0) {
		pInformation->Ctrl_Info.Usb_wLength = sizeof(linecoding);

		return NULL;
	}

	return(uint8_t *)&linecoding;
}

/*******************************************************************************
* Function Name  : Virtual_Com_Port_SetLineCoding.
* Description    : Set the linecoding structure fields.
* Input          : Length.
* Output         : None.
* Return         : Linecoding structure base address.
*******************************************************************************/
uint8_t *Virtual_Com_Port_SetLineCoding(uint16_t Length) {
	if (Length == 0) {
		pInformation->Ctrl_Info.Usb_wLength = sizeof(linecoding);

		return NULL;
	}

	return(uint8_t *)&linecoding;
}