#ifndef __VCOM_SERIAL_H__
#define __VCOM_SERIAL_H__

#include <stdint.h>


#define USBD_VID	0x0416
#define USBD_PID    0x50A1


#define EP_INT_IN_NUM		1
#define EP_BULK_IN_NUM		2
#define EP_BULK_OUT_NUM		2

#define EP_CTRL_PKSZ		64
#define EP_INT_IN_PKSZ		8
#define EP_BULK_IN_PKSZ		64
#define EP_BULK_OUT_PKSZ	64


/* CDC Class Specific Request */
#define SET_LINE_CODE           0x20
#define GET_LINE_CODE           0x21
#define SET_CONTROL_LINE_STATE  0x22


typedef struct __attribute__((packed))
{
    uint32_t u32DTERate;     // Baud rate
    uint8_t  u8CharFormat;   // stop bit, 0 - 1 Stop bit, 1 - 1.5 Stop bits, 2 - 2 Stop bits
    uint8_t  u8ParityType;   // parity, 0 - None, 1 - Odd, 2 - Even, 3 - Mark, 4 - Space
    uint8_t  u8DataBits;     // data bits,  5, 6, 7, 8, 16
} STR_VCOM_LINE_CODING;

extern STR_VCOM_LINE_CODING LineCfg;


#define RX_BUFF_SIZE    256 	// RX buffer size
#define TX_BUFF_SIZE    256 	// RX buffer size

typedef struct {
	uint8_t  rx_buff[RX_BUFF_SIZE];
	uint16_t rx_bytes;
	uint16_t rx_head;
	uint16_t rx_tail;
	uint8_t  tx_buff[TX_BUFF_SIZE];
	uint16_t tx_bytes;
	uint16_t tx_head;
	uint16_t tx_tail;
	
	uint16_t hw_flow;	// BIT0: DTR(Data Terminal Ready) , BIT1: RTS(Request To Send)
	
	uint8_t  in_buff[64];
	uint16_t in_bytes;
	uint8_t  out_buff[64];
	uint16_t out_bytes;
	uint16_t out_ready;
} VCOM;

extern volatile VCOM vcom;


void VCOM_Init(void);
void VCOM_SetLineCoding(void);
void VCOM_TransferData(void);
void VCOM_ClassRequest(USB_Setup_Packet_t * pSetup);


#endif