/*
 * cdc.h
 *
 *  Created on: Nov 6, 2024
 *      Author: true
 */

#ifndef USER_USB_CDC_H_
#define USER_USB_CDC_H_

#ifdef __cplusplus
extern "C" {
#endif



#include <stdio.h>
#include <string.h>



/******************************************************************************/
/* Related macro definitions */
/* Serial buffer related definitions */
#define DEF_CDC_RX_BUF_LEN       ( 4 * 512 )                                    /* Serial x receive buffer size */
#define DEF_CDC_TX_BUF_LEN       ( 2 * 512 )                                    /* Serial x transmit buffer size */
#define DEF_USB_FS_PACK_LEN      64                                             /* USB full speed mode packet size for serial x data */
#define DEF_CDC_TX_BUF_NUM_MAX   (DEF_CDC_TX_BUF_LEN / DEF_USB_FS_PACK_LEN)     /* Serial x transmit buffer size */

/* Serial port receive timeout related macro definition */
#define DEF_CDC_BAUDRATE         115200                                         /* Default baud rate for serial port */
#define DEF_CDC_STOPBIT          0                                              /* Default stop bit for serial port */
#define DEF_CDC_PARITY           0                                              /* Default parity bit for serial port */
#define DEF_CDC_DATABIT          8                                              /* Default data bit for serial port */
#define DEF_CDC_RX_TIMEOUT       30                                             /* Serial port receive timeout, in 100uS */
#define DEF_CDC_USB_UP_TIMEOUT   60000                                          /* Serial port receive upload timeout, in 100uS */


/************************************************************/
/* Serial port X related structure definition */
typedef struct __attribute__((packed)) _UART_CTL
{
    uint16_t Rx_LoadPtr;                                                        /* Serial x data receive buffer load pointer */
    uint16_t Rx_DealPtr;                                                        /* Pointer to serial x data receive buffer processing */
    volatile uint16_t Rx_RemainLen;                                             /* Remaining unprocessed length of the serial x data receive buffer */
    uint8_t  Rx_TimeOut;                                                        /* Serial x data receive timeout */
    uint8_t  Rx_TimeOutMax;                                                     /* Serial x data receive timeout maximum */

    volatile uint16_t Tx_LoadNum;                                               /* Serial x data send buffer load number */
    volatile uint16_t Tx_DealNum;                                               /* Serial x data send buffer processing number */
    volatile uint16_t Tx_RemainNum;                                             /* Serial x data send buffer remaining unprocessed number */
    volatile uint16_t Tx_PackLen[DEF_CDC_TX_BUF_NUM_MAX];                       /* The current packet length of the serial x data send buffer */
    uint8_t  Tx_Flag;                                                           /* Serial x data send status */
    uint8_t  Recv1;
    uint16_t Tx_CurPackLen;                                                     /* The current packet length sent by serial port x */
    uint16_t Tx_CurPackPtr;                                                     /* Pointer to the packet currently being sent by serial port x */

    uint8_t  USB_Up_IngFlag;                                                    /* Serial xUSB packet being uploaded flag */
    uint8_t  Recv2;
    uint16_t USB_Up_TimeOut;                                                    /* Serial xUSB packet upload timeout timer */
    uint8_t  USB_Up_Pack0_Flag;                                                 /* Serial xUSB data needs to upload 0-length packet flag */
    uint8_t  USB_Down_StopFlag;                                                 /* Serial xUSB packet stop down flag */

    uint8_t  Com_Cfg[ 8 ];                                                      /* Serial x parameter configuration (default baud rate is 115200, 1 stop bit, no parity, 8 data bits) */
    uint8_t  Recv3;
    uint8_t  USB_Int_UpFlag;                                                    /* Serial x interrupt upload status */
    uint16_t USB_Int_UpTimeCount;                                               /* Serial x interrupt upload timing */
} CDC_CTL, *PCDC_CTL;

/***********************************************************************************************************************/
/* Constant, variable extents */
/* The following are serial port transmit and receive related variables and buffers */
extern volatile CDC_CTL Cdc;                                                    /* Serial x control related structure */
extern __attribute__ ((aligned(4))) uint8_t CDC_Tx_Buf[DEF_CDC_TX_BUF_LEN];     /* Serial x transmit buffer */
extern __attribute__ ((aligned(4))) uint8_t CDC_Rx_Buf[DEF_CDC_RX_BUF_LEN];     /* Serial x transmit buffer */

/***********************************************************************************************************************/



void CDC_USB_Init(void);
void CDC_DataTx_Process( void );                                                /* Serial port 1 data sending processing  */
void CDC_DataRx_Process( void );                                                /* Serial port 1 data reception processing */



#ifdef __cplusplus
}
#endif

#endif /* USER_USB_CDC_H_ */