烈火－M0 4K DATAFLASH当做1K 32Bit EEPROM用，非常方便！

#include <stdio.h> 

#include "NUC1xx.h"

#include "Driver\DrvSYS.h"

#include "Driver\DrvGPIO.h"

#include "Driver\DrvUART.h"

#include "Driver\DrvFMC.h"



uint32_t temp1,temp2,temp3;



#define DATA_Flash_Start_ADD 0x0001F000

#define PAGE_SIZE 128 //512 byte



void DATA_FLASH_Write(uint32_t add,uint32_t data);

uint32_t DATA_FLASH_Read(uint32_t add);



//============================================================================

// DATA FLASH当做EEPROM用。4k 8BIT当做1K 32位用，这样读写更方便！---烈火狂龙

// u32addr : 0-1024 　　写入地址

// u32data : 0-0xFFFFFFFF 写入数据

//============================================================================

void DATA_FLASH_Write(uint32_t u32addr,uint32_t u32data)

{

uint32_t data_buff[128]={0};

uint32_t i=0;



__set_PRIMASK(1);//关闭全局中断,不关中断就等着出错吧，呵呵。



UNLOCKREG();

DrvFMC_EnableISP();



for(i=0;i<AGE_SIZE;i++)

DrvFMC_Read(DATA_Flash_Start_ADD+i*4+ u32addr/128*512, &data_buff);//读出一页



DrvFMC_Erase(DATA_Flash_Start_ADD+u32addr/128*512);//擦除一页



data_buff[u32addr%128]=u32data; //修改要写入的数据



for(i=0; i<AGE_SIZE; i++) //写入数据

DrvFMC_Write(DATA_Flash_Start_ADD+i*4+ u32addr/128*512, data_buff);





DrvFMC_DisableISP();

LOCKREG();

__set_PRIMASK(0);//打开全局中断



}



//============================================================================

// u32addr : 0-1024 　　读取地址

//============================================================================

uint32_t DATA_FLASH_Read(uint32_t u32add)

{

uint32_t u32data;

__set_PRIMASK(1);//关闭全局中断,不关中断就等着出错吧，呵呵。

UNLOCKREG();

DrvFMC_EnableISP();

DrvFMC_Read(u32add*4+DATA_Flash_Start_ADD, &u32data);

DrvFMC_DisableISP(); 

LOCKREG();

__set_PRIMASK(0);//打开全局中断

return u32data;

}







//============================================================================

// 　　　　　　　　　　　　　　　主程序

//============================================================================

int32_t main (void)

{

STR_UART_T sParam;



/* Unlock the protected registers */ 

UNLOCKREG();

/* Enable the 12MHz oscillator oscillation */

DrvSYS_SetOscCtrl(E_SYS_XTL12M, 1);



/* Waiting for 12M Xtal stalble */

DrvSYS_Delay(5000);



/* HCLK clock source. 0: external 12MHz; 4:internal 22MHz RC oscillator */

DrvSYS_SelectHCLKSource(0); 

/*lock the protected registers */

LOCKREG(); 



DrvSYS_SetClockDivider(E_SYS_HCLK_DIV, 0); /* HCLK clock frequency = HCLK clock source / (HCLK_N + 1) */



/* Set UART Pin */

DrvGPIO_InitFunction(E_FUNC_UART0);



/* UART Setting */

sParam.u32BaudRate = 115200;

sParam.u8cDataBits = DRVUART_DATABITS_8;

sParam.u8cStopBits = DRVUART_STOPBITS_1;

sParam.u8cParity = DRVUART_PARITY_NONE;

sParam.u8cRxTriggerLevel= DRVUART_FIFO_1BYTES;



/* Set UART Configuration */

if(DrvUART_Open(UART_PORT0,&sParam) != E_SUCCESS)

{

printf("UART0 open failed\n");

return FALSE;

}



printf("================================================\n\r");

printf(" 菜农新唐M0助学板范例 \n\r");

printf(" 实验十： DATA FLASH读写例程 　\n\r");

printf(" 烈火狂龙 论坛ID: plc_avr \n\r");

printf("================================================\n\r");



if(DATA_FLASH_Read(0)==0xFFFFFFFF)

{

DATA_FLASH_Write(0,0);

DATA_FLASH_Write(1,1);

DATA_FLASH_Write(2,2);

}

else

{

temp1 = DATA_FLASH_Read(0);

printf("当前DATA FLASH 地址0数据: %ld\n", temp1);

temp2 = DATA_FLASH_Read(1);

printf("当前DATA FLASH 地址1数据: %ld\n", temp2);

temp3 = DATA_FLASH_Read(2);

printf("当前DATA FLASH 地址2数据: %ld\n", temp3);



DATA_FLASH_Write(0,temp1+1);

DATA_FLASH_Write(1,temp2+1);

DATA_FLASH_Write(2,temp3+1);

}

printf("演示结束，按板子上面复位，可以看到DATA FLASH数据累加并保存\n");



while(1)

{



} 



}

//============================================================================

// END

//============================================================================