flash.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include "flash.h"
#include "CAENVMElib.h"

Go to the source code of this file.

Functions
static int	GetFlashStatus32 (cvFlashAccess *Flash, uint8_t *Status)
static int	GetFlashStatus (cvFlashAccess *Flash, uint8_t *Status)
static int	WriteFlashPage32 (cvFlashAccess *Flash, uint8_t *data, int pagenum)
static int	ReadFlashPage32 (cvFlashAccess *Flash, uint8_t *data, int pagenum)
static int	ReadFlashSecurityReg32 (cvFlashAccess *Flash, uint8_t *data)
int	WriteFlashPage (cvFlashAccess *Flash, uint8_t *data, int pagenum)
int	ReadFlashPage (cvFlashAccess *Flash, uint8_t *data, int pagenum)
int	ReadFlashSecurityReg (cvFlashAccess *Flash, uint8_t *data)

Function Documentation

static int GetFlashStatus ( cvFlashAccess *  Flash, uint8_t *  Status  )

static

Definition at line 35 of file flash.c.

References GetFlashStatus32().

Referenced by WriteFlashPage32().

                                                                 {

  int ret;

    ret = GetFlashStatus32(Flash, Status);

  return ret;    
    
}

static int GetFlashStatus32 ( cvFlashAccess *  Flash, uint8_t *  Status  )

static

Definition at line 8 of file flash.c.

References CAENVME_ReadRegister(), CAENVME_WriteRegister(), FlashAccess::FlashEnable, FlashAccess::Handle, FlashAccess::RW_Flash, FlashAccess::Sel_Flash, and STATUS_READ_CMD.

Referenced by GetFlashStatus().

{
    int res = 0;
    uint32_t reg32;


        // Enable flash
    res |= CAENVME_WriteRegister(Flash->Handle,Flash->Sel_Flash,Flash->FlashEnable);
        // Status read Command
        reg32 = STATUS_READ_CMD;
        res |= CAENVME_WriteRegister(Flash->Handle, Flash->RW_Flash, reg32);
        // Status read
        res |= CAENVME_ReadRegister(Flash->Handle, Flash->RW_Flash, &reg32);
        // Disable flash 
        res |= CAENVME_WriteRegister(Flash->Handle, Flash->Sel_Flash, !Flash->FlashEnable);
        *Status = (uint8_t)(reg32 & 0xFF);

    return res;

}

int ReadFlashPage	(	cvFlashAccess *	Flash,
		uint8_t *	data,
		int	pagenum
	)

Definition at line 202 of file flash.c.

                                                                    {

  int ret;


    ret = ReadFlashPage32(Flash, data, pagenum);
 
  return ret;    
    
}

static int ReadFlashPage32 ( cvFlashAccess *  Flash, uint8_t *  data, int  pagenum  )

static

Definition at line 95 of file flash.c.

References CAENVME_ReadRegister(), CAENVME_WriteRegister(), FlashAccess::FlashEnable, FlashAccess::Handle, i, MAIN_MEM_PAGE_READ_CMD, FlashAccess::PageSize, FlashAccess::RW_Flash, and FlashAccess::Sel_Flash.

Referenced by ReadFlashPage().

{
    unsigned int i;
    int res = 0;
    uint32_t flash_addr;
    uint32_t Rbuff;
        uint32_t reg32;
    int  rcnt = 0;

        if (Flash->PageSize == 264)       // 4 and 8 Mbit
                flash_addr = (uint32_t)pagenum << 9;
        else if (Flash->PageSize == 528)  // 16 and 32 Mbit
                flash_addr = (uint32_t)pagenum << 10;
        else                              // 64 Mbit
                flash_addr = (uint32_t)pagenum << 11;

    reg32 = !Flash->FlashEnable; 
        res |= CAENVME_WriteRegister(Flash->Handle, Flash->Sel_Flash, reg32);    
        // Enable flash
    res |= CAENVME_WriteRegister(Flash->Handle, Flash->Sel_Flash, Flash->FlashEnable);

        // Opcode

   res |= CAENVME_WriteRegister(Flash->Handle, Flash->RW_Flash, MAIN_MEM_PAGE_READ_CMD); 
        // Page address

    res |= CAENVME_WriteRegister(Flash->Handle, Flash->RW_Flash, (flash_addr>>16) & 0xFF); 

    res |= CAENVME_WriteRegister(Flash->Handle, Flash->RW_Flash, (flash_addr>>8) & 0xFF); 

    res |= CAENVME_WriteRegister(Flash->Handle, Flash->RW_Flash, flash_addr & 0xFF); 
        // additional don't care bytes
    for (i=0; i<4; i++) {
                res |= CAENVME_WriteRegister(Flash->Handle, Flash->RW_Flash, 0);  
    }

    // Read Flash Page
    rcnt = 0;
    for (i=0; i<Flash->PageSize; i++) {
                CAENVME_ReadRegister(Flash->Handle, Flash->RW_Flash, &Rbuff);
                data[i] = (uint8_t) Rbuff;
    }

        // Disable flash 
    reg32 = !Flash->FlashEnable; 
        res |= CAENVME_WriteRegister(Flash->Handle, Flash->Sel_Flash, reg32);

    return res;
}

int ReadFlashSecurityReg	(	cvFlashAccess *	Flash,
		uint8_t *	data
	)

Definition at line 217 of file flash.c.

                                                              {

  int ret;

    ret = ReadFlashSecurityReg32(Flash, data);
  return ret;    
    
}

static int ReadFlashSecurityReg32 ( cvFlashAccess *  Flash, uint8_t *  data  )

static

Definition at line 146 of file flash.c.

References AT45_IDREG_LENGTH, AT45_READ_SECURITY_REGISTER_OPCODE, CAENVME_ReadRegister(), CAENVME_WriteRegister(), FlashAccess::FlashEnable, FlashAccess::Handle, i, FlashAccess::RW_Flash, and FlashAccess::Sel_Flash.

Referenced by ReadFlashSecurityReg().

{
  int i;
  int res = 0;
  uint32_t data32[2048];
  uint32_t reg32;

  reg32 = !Flash->FlashEnable;
  res |= CAENVME_WriteRegister(Flash->Handle, Flash->Sel_Flash, reg32);
  // enable flash (NCS = 0)
  res |= CAENVME_WriteRegister(Flash->Handle, Flash->Sel_Flash, Flash->FlashEnable);

  // write opcode
  reg32 = AT45_READ_SECURITY_REGISTER_OPCODE;
  res |= CAENVME_WriteRegister(Flash->Handle, Flash->RW_Flash, reg32);
  // additional don't care bytes
  reg32 = 0;
  for (i=0; i<3; i++)
      res |= CAENVME_WriteRegister(Flash->Handle, Flash->RW_Flash, reg32);

  // read flash page
  for (i=0; i<AT45_IDREG_LENGTH; i++) 
      res |= CAENVME_ReadRegister(Flash->Handle, Flash->RW_Flash,(data32+i));

  // disable flash (NCS = 1)
  reg32 = !Flash->FlashEnable;
  res |= CAENVME_WriteRegister(Flash->Handle, Flash->Sel_Flash, reg32);
  for (i=0; i<AT45_IDREG_LENGTH; i++) 
          data[i] = (uint8_t)data32[i];

  return res;
}

int WriteFlashPage	(	cvFlashAccess *	Flash,
		uint8_t *	data,
		int	pagenum
	)

Definition at line 186 of file flash.c.

                                                                     {

  int ret;

    ret = WriteFlashPage32(Flash, data, pagenum);

  return ret;    
    
}

static int WriteFlashPage32 ( cvFlashAccess *  Flash, uint8_t *  data, int  pagenum  )

static

Definition at line 46 of file flash.c.

References CAENVME_WriteRegister(), FlashAccess::FlashEnable, GetFlashStatus(), FlashAccess::Handle, i, MAIN_MEM_PAGE_PROG_TH_BUF1_CMD, FlashAccess::PageSize, FlashAccess::RW_Flash, and FlashAccess::Sel_Flash.

Referenced by WriteFlashPage().

{
    unsigned int i;
    int res = 0;
    uint8_t stat;
    uint32_t flash_addr;
        uint32_t reg32;

        if (Flash->PageSize == 264)  // 4 and 8 Mbit
                flash_addr = (uint32_t)pagenum << 9;
        else if (Flash->PageSize == 528)  // 16 and 32 Mbit
                flash_addr = (uint32_t)pagenum << 10;
        else  // 64 Mbit
                flash_addr = (uint32_t)pagenum << 11;

        reg32 = !Flash->FlashEnable; 
        res |= CAENVME_WriteRegister(Flash->Handle, Flash->Sel_Flash, reg32);
        // Enable flash 
    res |= CAENVME_WriteRegister(Flash->Handle, Flash->Sel_Flash, Flash->FlashEnable);

    // Opcode
    res |= CAENVME_WriteRegister(Flash->Handle, Flash->RW_Flash, MAIN_MEM_PAGE_PROG_TH_BUF1_CMD); 

        // Page address

    res |= CAENVME_WriteRegister(Flash->Handle,Flash->RW_Flash, (flash_addr>>16) & 0xFF); 

    res |= CAENVME_WriteRegister(Flash->Handle,Flash->RW_Flash, (flash_addr>>8) & 0xFF); 

    res |= CAENVME_WriteRegister(Flash->Handle,Flash->RW_Flash, flash_addr & 0xFF); 

    // Fill buffer
    for (i=0; i<Flash->PageSize; i++) {
                res |= CAENVME_WriteRegister(Flash->Handle,Flash->RW_Flash, data[i]); 
    }

    // Disable flash 
   reg32 = !Flash->FlashEnable; 
        res |= CAENVME_WriteRegister(Flash->Handle, Flash->Sel_Flash, reg32);

    // wait for Tep (Time of erase and programming)
        do 
                res |= GetFlashStatus(Flash, &stat);
        while (!(stat & 0x80));

    return res;
}