/*
 *  Copyright (c) 2019, Tongxin Microelectronics Co., Ltd. 
 *  All rights reserved.
 * 
 *  FileName: usb_init.c
 *  SCFID: 
 *  Feature: 
 *  Version: V0.1
 * 
 *  History: 
 *    2019-06-04
 *      1. Original version 0.1
 * */
#include "global.h"

extern uint8_t gLicenseFlag;   //标记是否有License，gLicenseFlag = 0表明license有效

void USBClkInit(void)
{
	int i;
	
    RCC_Security2PeriphClockCmd(RCC_SEC2Periph_USB, ENABLE);
    
	USBPHYCKCON1 |= Bit1_En;
	USBPHYCKCON2 |= Bit12_En | Bit13_En | Bit16_En;	
    
    USBPHYCON = 0x00000004;													//	Disable Pull-up
	
	for(i=0;i<100;i++)
	{}	
	
    RCC_USBClockConfig(RCC_USB_CLKSRC_USBPHY,ENABLE);
	
	for(i=0;i<100;i++)
	{}		
	
	USBDCON |= Bit20_En;
	
	for(i=0;i<10;i++)												//	Waiting for USB controller reset,16 cycles needed
	{
		__NOP();
		__NOP();
		__NOP();	
	}
	
	USBPHYCON = 0x00000007;													//	Enable DP PU 	
}	

/***************************************************************************
* Function: USBInit
* Description: usb Init
* Input:  NULL
* Output: NULL
* Return: NULL	
* Other:  NULL
**************************************************************************/
void USBInit(void)
{
//	USBDCON |= Bit20_En;
	USBDCON |= Bit16_En | Bit0_En;											//reset irq en, ep0 irq en
	
//	SCUCM3 |= Bit8_En;														//	usb clock enable
	USBPCON	= 0x00000002;													//	USB physical layer power on and no suspend

	USBPHYCON = 0x00000005;													//	Enable DP PU 

	USBPHYCKCON1 |= Bit1_En;
	USBPHYCKCON2 |= Bit16_En;
	
//	XTAL and PLL Init
//	SCUXTAL = 0x03;															//	enable xtal in and out IO

//	USB parameter init
	st_usbDeviceRequest.bStdRqstFlag = 0;
	st_usbDeviceRequest.bClsRqstFlag = 0;
	st_usbDeviceRequest.bVdrRqstFlag = 0;
		
	g_sUsbEp0TxLen = 0;
	g_bUsbEp0TxIntFlag = 0;
	g_bUsbEp0RcvDataFlag = 0;

	g_bUsbEp1RcvDataFlag = 0;
	g_sUsbEp2TxLen = 0;
#if CCID
	st_ccidCmdMessage.bWaitForAbort = 0;
	g_Icc1PowerOn = 0;
#endif

	//usb端点初始化
	usbEpInit();															//	USB Eps initialize	
}

void AppUSBInit(uint8_t usbType)
{
    //如果产品没有SPRODUCT_FLAG置位，设备为虚拟串口
    if(gLicenseFlag)  //如果不相等
    {
        g_bUsbDevType = USBDEVTYPE_VSP;
    }
    else
    {	
        g_bUsbDevType = usbType;
    }    
    
	//usb时钟初始化
	USBClkInit();
	
	//usb端点初始化
	USBInit();
	
	//usb中断使能
    NVIC_ClearPendingIRQ(USB_IRQn);
    NVIC_EnableIRQ(USB_IRQn);

}