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HDFLASH DRIVER

2.3.4 Firmware template

#include "io72521.h"/* ST72521 memory and registers mapping */

#include "HDFlash_macros.h"

/* HDFlash driver software

*/

unsigned char tempo; /*

/********VPP Supply 1ms stabilization delay********************/

#define Vpp_Enable()

{ \

ClrBit(PADR,1); \

for (tempo=0;tempo<1000;tempo++);

}

#define Vpp_Disable() SetBit(PADR,1) /* Disable Vpp macro

*/

void Loop(void);

/*************** Main****************************************/

void main(void)

{

/******************** Initialization ************************/

ST7_Init();

//General initialization

while(1) Loop();

}

/*****************UserWhileWriteBlock************************

void UserWhileWriteBlock(void)

{

WDGCR=0x08;

//Refresh WATCHDOG Timer

}

/*************** UserWhileErase ******************************

void UserWhileErase(void)

{

WDGCR=0x08;

//Refresh WATCHDOG Timer

}

/****Erasing & Reprogramming routines within External ISR*******/

@interrupt void On_SW1(void)

{

unsigned int cpt;

unsigned char *pFlash;

unsigned char ProgBuffer[45] @0x9C;

SPI_Init();

//initialize SPI communication

SPI_Rx(ProgBuffer,2,100,(char)0);

//Receive RASS keys from EEPROM

RASS_Disable(ProgBuffer[0],ProgBuffer[1]); //Unlock Flash

Vpp_Enable();

HDFlashEraseSector(1,1); //Erase Secor 1

for(cpt=0;cpt<2;cpt++)