NUC100的FMC读写操作

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

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

 * [url=home.php?mod=space&uid=895143]@version[/url]  V3.00

 * $Revision: 2 $

 * $Date: 15/05/12 1:49p $

 * [url=home.php?mod=space&uid=247401]@brief[/url]    Show how to read/program embedded flash by ISP function.

 * @note

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

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

#include <stdio.h>

#include "NUC100Series.h"



#define PLLCON_SETTING      CLK_PLLCON_50MHz_HXT

#define PLL_CLOCK           50000000





#define APROM_TEST_BASE             0x3000

#define DATA_FLASH_TEST_BASE        0xF000

#define DATA_FLASH_TEST_END         0x10000

#define TEST_PATTERN                0x5A5A5A5A







void SYS_Init(void)

{

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

    /* Init System Clock                                                                                       */

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



    /* Enable Internal RC 22.1184MHz clock */

    CLK_EnableXtalRC(CLK_PWRCON_OSC22M_EN_Msk);



    /* Waiting for Internal RC clock ready */

    CLK_WaitClockReady(CLK_CLKSTATUS_OSC22M_STB_Msk);



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

    CLK_SetHCLK(CLK_CLKSEL0_HCLK_S_HIRC, CLK_CLKDIV_HCLK(1));



    /* Enable external XTAL 12MHz clock */

    CLK_EnableXtalRC(CLK_PWRCON_XTL12M_EN_Msk);



    /* Waiting for external XTAL clock ready */

    CLK_WaitClockReady(CLK_CLKSTATUS_XTL12M_STB_Msk);



    /* Set core clock as PLL_CLOCK from PLL */

    CLK_SetCoreClock(PLL_CLOCK);



    /* Enable UART module clock */

    CLK_EnableModuleClock(UART0_MODULE);



    /* Select UART module clock source */

    CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UART_S_HXT, CLK_CLKDIV_UART(1));





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

    /* Init I/O Multi-function                                                                                 */

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



    /* Set GPB multi-function pins for UART0 RXD and TXD */

    SYS->GPB_MFP = SYS_GPB_MFP_PB0_UART0_RXD | SYS_GPB_MFP_PB1_UART0_TXD;



}



void UART_Init()

{

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

    /* Init UART                                                                                               */

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

    UART_Open(UART0, 115200);

}





static int  SetDataFlashBase(uint32_t u32DFBA)

{

    uint32_t au32Config[2];



    /* Read current User Configuration */

    FMC_ReadConfig(au32Config, 1);



    /* Just return when Data Flash has been enabled */

    if(!(au32Config[0] & 0x1))

        return 0;



    /* Enable User Configuration Update */

    FMC_EnableConfigUpdate();



    /* Erase User Configuration */

    FMC_Erase(FMC_CONFIG_BASE);



    /* Write User Configuration to Enable Data Flash */

    au32Config[0] &= ~0x1;

    au32Config[1] = u32DFBA;



    if(FMC_WriteConfig(au32Config, 2))

        return -1;



    printf("\nSet Data Flash base as 0x%x.\n", FMC_ReadDataFlashBaseAddr());



    /* Perform chip reset to make new User Config take effect */

    SYS->IPRSTC1 |= SYS_IPRSTC1_CHIP_RST_Msk;



    return 0;

}





int32_t FillDataPattern(uint32_t u32StartAddr, uint32_t u32EndAddr, uint32_t u32Pattern)

{

    uint32_t u32Addr;



    for(u32Addr = u32StartAddr; u32Addr < u32EndAddr; u32Addr += 4)

    {

        FMC_Write(u32Addr, u32Pattern);

    }

    return 0;

}





int32_t  VerifyData(uint32_t u32StartAddr, uint32_t u32EndAddr, uint32_t u32Pattern)

{

    uint32_t    u32Addr;

    uint32_t    u32Data;



    for(u32Addr = u32StartAddr; u32Addr < u32EndAddr; u32Addr += 4)

    {

        u32Data = FMC_Read(u32Addr);

        if(u32Data != u32Pattern)

        {

            printf("\nFMC_Read data verify failed at address 0x%x, read=0x%x, expect=0x%x\n", u32Addr, u32Data, u32Pattern);

            return -1;

        }

    }

    return 0;

}





int32_t  FlashTest(uint32_t u32StartAddr, uint32_t u32EndAddr, uint32_t u32Pattern)

{

    uint32_t    u32Addr;



    for(u32Addr = u32StartAddr; u32Addr < u32EndAddr; u32Addr += FMC_FLASH_PAGE_SIZE)

    {

        printf("    Flash test address: 0x%x    \r", u32Addr);



        // Erase page

        FMC_Erase(u32Addr);



        // Verify if page contents are all 0xFFFFFFFF

        if(VerifyData(u32Addr, u32Addr + FMC_FLASH_PAGE_SIZE, 0xFFFFFFFF) < 0)

        {

            printf("\nPage 0x%x erase verify failed!\n", u32Addr);

            return -1;

        }



        // Write test pattern to fill the whole page

        if(FillDataPattern(u32Addr, u32Addr + FMC_FLASH_PAGE_SIZE, u32Pattern) < 0)

        {

            printf("Failed to write page 0x%x!\n", u32Addr);

            return -1;

        }



        // Verify if page contents are all equal to test pattern

        if(VerifyData(u32Addr, u32Addr + FMC_FLASH_PAGE_SIZE, u32Pattern) < 0)

        {

            printf("\nData verify failed!\n ");

            return -1;

        }



        FMC_Erase(u32Addr);



        // Verify if page contents are all 0xFFFFFFFF

        if(VerifyData(u32Addr, u32Addr + FMC_FLASH_PAGE_SIZE, 0xFFFFFFFF) < 0)

        {

            printf("\nPage 0x%x erase verify failed!\n", u32Addr);

            return -1;

        }

    }

    printf("\r    Flash Test Passed.          \n");

    return 0;

}





int main()

{

    uint32_t i, u32Data;



    /* Unlock protected registers */

    SYS_UnlockReg();



    SYS_Init();

    UART_Init();



    /*

        This sample code is used to show how to use StdDriver API to implement ISP functions.

    */



    printf("\n\n");

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

    printf("|          NUC100 FMC Sample Code        |\n");

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



    //SYS_UnlockReg();



    /* Enable FMC ISP function */

    FMC_Open();



    if(SetDataFlashBase(DATA_FLASH_TEST_BASE) < 0)

    {

        printf("Failed to set Data Flash base address!\n");

        goto lexit;

    }



    /* Read BS */

    printf("  Boot Mode ............................. ");

    if(FMC_GetBootSource() == 0)

        printf("[APROM]\n");

    else

    {

        printf("[LDROM]\n");

        printf("  WARNING: The driver sample code must execute in AP mode!\n");

        goto lexit;

    }



    u32Data = FMC_ReadCID();

    printf("  Company ID ............................ [0x%08x]\n", u32Data);



    u32Data = FMC_ReadPID();

    printf("  Product ID ............................ [0x%08x]\n", u32Data);



    for(i = 0; i < 3; i++)

    {

        u32Data = FMC_ReadUID(i);

        printf("  Unique ID %d ........................... [0x%08x]\n", i, u32Data);

    }



    for(i = 0; i < 4; i++)

    {

        u32Data = FMC_ReadUCID(i);

        printf("  Unique Customer ID %d .................. [0x%08x]\n", i, u32Data);

    }



    /* Read User Configuration */

    printf("  User Config 0 ......................... [0x%08x]\n", FMC_Read(FMC_CONFIG_BASE));

    printf("  User Config 1 ......................... [0x%08x]\n", FMC_Read(FMC_CONFIG_BASE + 4));



    /* Read Data Flash base address */

    u32Data = FMC_ReadDataFlashBaseAddr();

    printf("  Data Flash Base Address ............... [0x%08x]\n", u32Data);



    printf("\n\nLDROM test =>\n");

    FMC_EnableLDUpdate();

    if(FlashTest(FMC_LDROM_BASE, FMC_LDROM_BASE + FMC_LDROM_SIZE, TEST_PATTERN) < 0)

    {

        printf("\n\nLDROM test failed!\n");

        goto lexit;

    }

    FMC_DisableLDUpdate();



    printf("\n\nAPROM test =>\n");

    FMC_EnableAPUpdate();

    if(FlashTest(APROM_TEST_BASE, DATA_FLASH_TEST_BASE, TEST_PATTERN) < 0)

    {

        printf("\n\nAPROM test failed!\n");

        goto lexit;

    }

    FMC_DisableAPUpdate();



    printf("\n\nData Flash test =>\n");

    if(FlashTest(DATA_FLASH_TEST_BASE, DATA_FLASH_TEST_END, TEST_PATTERN) < 0)

    {

        printf("\n\nUHB test failed!\n");

        goto lexit;

    }



lexit:



    /* Disable FMC ISP function */

    FMC_Close();



    /* Lock protected registers */

    SYS_LockReg();



    printf("\nFMC Sample Code Completed.\n");



    while(1);

}



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

这个应该是可以替代EEPROM的，可以开辟一段空间用于掉电存储。

这个接口适合外接什么设备呢

这个接口有时钟引脚吗

大概能匀出来多少内存啊

这个是存储模块吗

读写速度快吗