usb_init.c

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 * Copyright (c) 2019, Nations Technologies Inc.
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 * All rights reserved.
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/**
 * @file usb_init.c
 * @author Nations
 * @version v1.0.0
 *
 * @copyright Copyright (c) 2019, Nations Technologies Inc. All rights reserved.
 */
#include "usb_lib.h"

/*  The number of current endpoint, it will be used to specify an endpoint */
uint8_t EPindex;
/*  The number of current device, it is an index to the Device_Table */
/* uint8_t  Device_no; */
/*  Points to the USB_DeviceMess structure of current device */
/*  The purpose of this register is to speed up the execution */
USB_DeviceMess* pInformation;
/*  Points to the DEVICE_PROP structure of current device */
/*  The purpose of this register is to speed up the execution */
DEVICE_PROP* pProperty;
/*  Temporary save the state of Rx & Tx status. */
/*  Whenever the Rx or Tx state is changed, its value is saved */
/*  in this variable first and will be set to the EPRB or EPRA */
/*  at the end of interrupt process */
uint16_t SaveState;
uint16_t wInterrupt_Mask;
USB_DeviceMess Device_Info;
USER_STANDARD_REQUESTS* pUser_Standard_Requests;

/**
 * @brief USB system initialization
 */
void USB_Init(void)
{
    pInformation            = &Device_Info;
    pInformation->CtrlState = 2;
    pProperty               = &Device_Property;
    pUser_Standard_Requests = &User_Standard_Requests;
    /* Initialize devices one by one */
    pProperty->Init();
    /*Pull up DP*/
    _EnPortPullup();
}