TMS320F28377D-Q1: EEPROM Emulation

Hi Ralf,

Thank you for your question, our emulation expert will get back to you as soon as possible.

Ralf: Below link answers your question.

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/943021/compiler-tms320f28379d-emulated-eeprom-in-flash

Here is what I use on 28379d and works fine

/**
* @file Flash.c
* @author F
* @version 1.0
* @date 12 Novembre 2009
* @brief Flash module.
* @details Flash functions for writing in Data Flash.
*
*/

#include "include.h"
#include "F021_F2837xD_C28x.h"

StructDataFlash *DataFlashRam;

const ulong FlashSector[16]=
{
0x080000, // A
0x081000, // B
0x082000, // C
0x083000, // D
0x084000, // E
0x085000, // F
0x086000, // G
0x087000, // H
};

//#pragma CODE_SECTION(FlashWriteBuf, ".TI.ramfunc");
uint FlashWriteBuf(uint *c)
{
//! Writes buffer in DataFlash.
//!
//! \param *c : buffer to be written.
//!
//! This function control values of Data Flash parameters.
//!
//! \return : 0 = Success.
uchar i; /* Counter of words */
uchar e; /* Error flag */
Fapi_StatusType f;
e = 1;
/* Erase sector and Blank Check */
EALLOW;
f = Fapi_issueAsyncCommandWithAddress(Fapi_EraseSector, (uint32 *)&DataFlash);
/* Wait until FSM is done with erase sector operation */
while (Fapi_checkFsmForReady() != Fapi_Status_FsmReady){}
/* Check for success */
if (f != Fapi_Status_Success)
e = 0;
/* Write command */
i = 0;
do
{
f = Fapi_issueProgrammingCommand((ulong *)&DataFlash + (i >> 1), c + i, 8, 0, 0, Fapi_AutoEccGeneration);
/* Wait until the Flash program operation is over */
while(Fapi_checkFsmForReady() == Fapi_Status_FsmBusy);
/* Check for success */
if (f != Fapi_Status_Success)
e = 0;
i = i + 8;
}
while (i < sizeof(StructDataFlash));
EDIS;
return e;
}

uint FlashWrite(uint *a, uchar *s, uint n)
{
//! Replace old datas by new in Data Flash.
//!
//! \param *a : address of first word to write.
//! \param *s : address of buffer to write (buffer of uchar).
//! \param n : number of words to write (-1).
//!
//! This function control values of Data Flash parameters.
//!
//! \return : 0 = Success.
uint c[sizeof(StructDataFlash)];
uint i;
/* Save old data in buffer */
i = 0;
do
{
c[i] = *(uint *)((ulong)&DataFlash + i);
i ++;
}
while (i < sizeof(StructDataFlash));
/* Replace data in buffer */
i = 0;
do
{
c[(ulong)a - (ulong)&DataFlash + i] = (*(uint *)(s + (2 * i) + 1) << 8) + *(uint *)(s + (2 * i));
i ++;
}
while (i <= n);
/* Start write command */
i = FlashWriteBuf((uint *)&c);
return i;
}

void FlashInit(void)
{
//! Initialize Data Flash parameters.
//!
//! \param None.
//!
//! This function initialize Data Flash.
//!
//! \return None.
Fapi_StatusType f;
//Flash_initModule(FLASH0CTRL_BASE, FLASH0ECC_BASE, DEVICE_FLASH_WAITSTATES);
EALLOW;
f = Fapi_initializeAPI(F021_CPU0_BASE_ADDRESS, CPUCLK_FREQUENCY);
/* Check for success */
if (f != Fapi_Status_Success)
RamRODef.Flash = 1;
f = Fapi_setActiveFlashBank(Fapi_FlashBank0);
/* Check for success */
if (f != Fapi_Status_Success)
RamRODef.Flash = 1;
/* Control Data Flash Parameters */
if (FlashCtrl() == 0)
RamRODef.Data = 0;
else
RamRODef.Data = 1;
EDIS;
}

uint FlashVer(void)
{
/* Return version of Flash library */
Fapi_LibraryInfoType f;
f = Fapi_getLibraryInfo(); /* Get Flash Api version */
return f.u8ApiMajorVersion * 100 + f.u8ApiMinorVersion;
}