/*---------------------------------------------------------------------------------------------------------*/
/*                                                                                                         */
/* Copyright(c) 2016 Nuvoton Technology Corp. All rights reserved.                                         */
/*                                                                                                         */
/*---------------------------------------------------------------------------------------------------------*/

//***********************************************************************************************************
//  Nuvoton Technoledge Corp.
//  Website: http://www.nuvoton.com
//  E-Mail : MicroC-8bit@nuvoton.com
//  Date   : Apr/21/2016
//***********************************************************************************************************

//***********************************************************************************************************
//  File Function: N76E003 APROM program DATAFLASH as EEPROM way
//***********************************************************************************************************
#include "N76E003.h"
#include "Common.h"
#include "Delay.h"
#include "SFR_Macro.h"
#include "Function_define.h"

#define ADDR_BASE 0x4700

#define FLASH_L_LOW			ADDR_BASE+1
#define FLASH_L_HIGH		ADDR_BASE+2
#define FLASH_H_LOW			ADDR_BASE+3
#define FLASH_H_HIGH		ADDR_BASE+4

volatile unsigned char xdata page_buffer[128];


UINT8 Read_APROM_BYTE ( UINT16 code *u16_addr )
{
    UINT8 rdata;
    rdata = *u16_addr >> 8;
    return rdata;
}
/*****************************************************************************************************************
write_DATAFLASH_BYTE :
user can copy all this subroutine into project, then call this function in main.
******************************************************************************************************************/
void Write_DATAFLASH_BYTE ( unsigned int u16EPAddr, unsigned char u8EPData )
{
    unsigned char looptmp = 0;
    unsigned int u16_addrl_r;
    unsigned int RAMtmp;

//Check page start address
    u16_addrl_r = ( u16EPAddr / 128 ) * 128;

//Save APROM data to XRAM0
    for ( looptmp = 0; looptmp < 0x80; looptmp++ )
    {
        RAMtmp = Read_APROM_BYTE ( ( unsigned int code * ) ( u16_addrl_r + looptmp ) );
        page_buffer[looptmp] = RAMtmp;
    }

// Modify customer data in XRAM
    page_buffer[u16EPAddr & 0x7f] = u8EPData;

//Erase APROM DATAFLASH page
    IAPAL = u16_addrl_r & 0xff;
    IAPAH = ( u16_addrl_r >> 8 ) & 0xff;
    IAPFD = 0xFF;
    set_IAPEN;
    set_APUEN;
    IAPCN = 0x22;
    set_IAPGO;

//Save changed RAM data to APROM DATAFLASH
    set_IAPEN;
    set_APUEN;
    IAPCN = 0x21;

    for ( looptmp = 0; looptmp < 0x80; looptmp++ )
    {
        IAPAL = ( u16_addrl_r & 0xff ) + looptmp;
        IAPAH = ( u16_addrl_r >> 8 ) & 0xff;
        IAPFD = page_buffer[looptmp];
        set_IAPGO;
    }

    clr_APUEN;
    clr_IAPEN;
}

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


void main ( void )
{
    UINT8 datatemp;
    UINT16 system16highsite;
    /* -------------------------------------------------------------------------*/
    /*  Dataflash use APROM area, please ALWAYS care the address of you code    */
    /*	APROM 0x3800~0x38FF demo as dataflash 				      				      			*/
    /* 	Please use Memory window key in C:0x3800 to check earse result					*/
    /* -------------------------------------------------------------------------*/
    InitialUART0_Timer1 ( 115200 );
//call write byte
    Write_DATAFLASH_BYTE ( 0x3802, 0x34 );
    Write_DATAFLASH_BYTE ( FLASH_L_LOW, 0x55 );
    Write_DATAFLASH_BYTE ( FLASH_L_HIGH, 0x56 );
    Write_DATAFLASH_BYTE ( FLASH_H_LOW, 0xaa );
    Write_DATAFLASH_BYTE ( FLASH_H_HIGH, 0x66 );
//call read byte
    datatemp = Read_APROM_BYTE ( 0x3802 );
    system16highsite = ( ( Read_APROM_BYTE ( FLASH_H_HIGH ) << 8 ) + Read_APROM_BYTE ( FLASH_H_LOW ) );

    while ( 1 )
    {
//				printf ("\n data temp = 0x%bx", datatemp);
    }
}
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