M451用SPI flash做u盘的程序

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

 * [url=home.php?mod=space&uid=288409]@file[/url]     main.c

 * @brief

 *           Use embedded data flash as storage to implement a USB Mass-Storage device.

 * @note

 * Copyright (C) 2014~2015 Nuvoton Technology Corp. All rights reserved.

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

#include <stdio.h>

#include "M451Series.h"

#include "massstorage.h"







/*--------------------------------------------------------------------------*/



void SYS_Init(void)

{

    /*---------------------------------------------------------------------------------------------------------*/

    /* Init System Clock                                                                                       */

    /*---------------------------------------------------------------------------------------------------------*/



    /* Enable Internal RC 22.1184MHz clock */

    CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);



    /* Waiting for Internal RC clock ready */

    CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);



    /* Switch HCLK clock source to Internal RC and HCLK source divide 1 */

    CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));



    /* Enable external XTAL 12MHz clock */

    CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);



    /* Waiting for external XTAL clock ready */

    CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);



    /* Set Flash Access Delay */

    FMC->FTCTL |= FMC_FTCTL_FOM_Msk;



    /* Set core clock */

    CLK_SetCoreClock(72000000);



    /* Enable module clock */

    CLK_EnableModuleClock(UART0_MODULE);

    CLK_EnableModuleClock(USBD_MODULE);



    /* Select module clock source */

    CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HXT, CLK_CLKDIV0_UART(1));

    CLK_SetModuleClock(USBD_MODULE, 0, CLK_CLKDIV0_USB(3));



    /* Enable USB LDO33 */

    SYS->USBPHY = SYS_USBPHY_LDO33EN_Msk;



    /*---------------------------------------------------------------------------------------------------------*/

    /* Init I/O Multi-function                                                                                 */

    /*---------------------------------------------------------------------------------------------------------*/



    /* Set GPD multi-function pins for UART0 RXD and TXD, and Clock Output */

    SYS->GPD_MFPL = SYS_GPD_MFPL_PD0MFP_UART0_RXD | SYS_GPD_MFPL_PD1MFP_UART0_TXD | SYS_GPD_MFPL_PD6MFP_CLKO;



    /* Enable CLKO (PD.6) for monitor HCLK. CLKO = HCLK/8 Hz */

    CLK_EnableCKO(CLK_CLKSEL1_CLKOSEL_HCLK, 2, 0);

}



uint32_t u32SpiMidDid=0;

unsigned char   SrcArray[256];

unsigned char DestArray[256];



/*---------------------------------------------------------------------------------------------------------*/

/*  Main Function                                                                                          */

/*---------------------------------------------------------------------------------------------------------*/

int32_t main(void)

{

uint32_t        u32ByteCount;

    /* Unlock protected registers */

    SYS_UnlockReg();



    SYS_Init();

    /* Configure UART0: 115200, 8-bit word, no parity bit, 1 stop bit. */

    UART_Open(UART0, 115200);



    printf("+-------------------------------------------------------+\n");

    printf("|          NuMicro USB MassStorage Sample Code          |\n");

    printf("+-------------------------------------------------------+\n");





    SYS_UnlockReg();









    /* Fill the Source Data and clear Destination Data Buffer */

    for(u32ByteCount = 0; u32ByteCount < 256; u32ByteCount++)

    {

        SrcArray[u32ByteCount] = u32ByteCount;

        DestArray[u32ByteCount] = 0;

    }





         SpiInit(SPI2);

    /* read MID & DID */

        u32SpiMidDid = SpiReadMidDid();

//        SpiChipErase();

//        SpiWrite(0,256, (uint32_t)SrcArray);

//        SpiRead(0, 256, (uint32_t)DestArray);





//    while(1);



        

 

    printf("NuMicro USB MassStorage Start!\n");



    USBD_Open(&gsInfo, MSC_ClassRequest, NULL);



    USBD_SetConfigCallback(MSC_SetConfig);



    /* Endpoint configuration */

    MSC_Init();

    USBD_Start();

    NVIC_EnableIRQ(USBD_IRQn);



    while(1)

    {

        MSC_ProcessCmd();

    }

}







/*** (C) COPYRIGHT 2014~2015 Nuvoton Technology Corp. ***/