117 lines
2.3 KiB
C
117 lines
2.3 KiB
C
/*
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* Copyright (c) 2019, Tongxin Microelectronics Co., Ltd.
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* All rights reserved.
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*
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* FileName: usb_init.c
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* SCFID:
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* Feature:
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* Version: V0.1
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*
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* History:
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* 2019-06-04
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* 1. Original version 0.1
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* */
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#include "global.h"
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extern uint8_t gLicenseFlag; //标记是否有License，gLicenseFlag = 0表明license有效
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void USBClkInit(void)
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{
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int i;
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RCC_Security2PeriphClockCmd(RCC_SEC2Periph_USB, ENABLE);
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USBPHYCKCON1 |= Bit1_En;
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USBPHYCKCON2 |= Bit12_En | Bit13_En | Bit16_En;
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USBPHYCON = 0x00000004; // Disable Pull-up
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for(i=0;i<100;i++)
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{}
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RCC_USBClockConfig(RCC_USB_CLKSRC_USBPHY,ENABLE);
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for(i=0;i<100;i++)
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{}
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USBDCON |= Bit20_En;
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for(i=0;i<10;i++) // Waiting for USB controller reset,16 cycles needed
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{
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__NOP();
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__NOP();
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__NOP();
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}
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USBPHYCON = 0x00000007; // Enable DP PU
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}
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/***************************************************************************
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* Function: USBInit
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* Description: usb Init
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* Input: NULL
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* Output: NULL
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* Return: NULL
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* Other: NULL
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**************************************************************************/
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void USBInit(void)
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{
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// USBDCON |= Bit20_En;
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USBDCON |= Bit16_En | Bit0_En; //reset irq en, ep0 irq en
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// SCUCM3 |= Bit8_En; // usb clock enable
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USBPCON = 0x00000002; // USB physical layer power on and no suspend
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USBPHYCON = 0x00000005; // Enable DP PU
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USBPHYCKCON1 |= Bit1_En;
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USBPHYCKCON2 |= Bit16_En;
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// XTAL and PLL Init
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// SCUXTAL = 0x03; // enable xtal in and out IO
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// USB parameter init
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st_usbDeviceRequest.bStdRqstFlag = 0;
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st_usbDeviceRequest.bClsRqstFlag = 0;
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st_usbDeviceRequest.bVdrRqstFlag = 0;
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g_sUsbEp0TxLen = 0;
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g_bUsbEp0TxIntFlag = 0;
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g_bUsbEp0RcvDataFlag = 0;
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g_bUsbEp1RcvDataFlag = 0;
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g_sUsbEp2TxLen = 0;
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#if CCID
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st_ccidCmdMessage.bWaitForAbort = 0;
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g_Icc1PowerOn = 0;
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#endif
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//usb端点初始化
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usbEpInit(); // USB Eps initialize
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}
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void AppUSBInit(uint8_t usbType)
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{
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//如果产品没有SPRODUCT_FLAG置位，设备为虚拟串口
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if(gLicenseFlag) //如果不相等
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{
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g_bUsbDevType = USBDEVTYPE_VSP;
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}
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else
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{
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g_bUsbDevType = usbType;
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}
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//usb时钟初始化
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USBClkInit();
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//usb端点初始化
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USBInit();
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//usb中断使能
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NVIC_ClearPendingIRQ(USB_IRQn);
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NVIC_EnableIRQ(USB_IRQn);
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}
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