CCS/TMS570LS3137-EP: TMS570LS3137

Hi,

The Data Block is to define the location of the data. The data block consists of header and data. The header takes 24-bytes. The smallest amount of data that can be stored within the Data Block is 64 bits. The minimum length of a data block is 24 bytes + 8 bytes = 32 bytes. If the Data size exceeds 64 bits, the Data Packets are added in 64 bit increments.

If Checksum is enabled, during writing of a block, Checksum of the data to be written is calculated and checked against the Checksum of the same block which is already existing in Flash. If Checksum matches, data is not written. If Checksum is not enabled, then data is compared byte by byte. If data does not match, write will be initiated.

Hello Wang,

Thanks for explaining, I have understood now it consume 32 bytes of frame in that 24 byte is header and 8 bytes is data.

I have tried to read the data without write. but i monitored in memory window data is present. but cannot able to read the expected data. why it is like that?

Can you please explain me, where i am making mistake. 

steps i followed to check

1. Required Data is written into flash bank 7,sector 0

2. Commented the write portion of code and disable the erase option in ccs ide.

3.  I tried to read the stored data, but data is not coming. (where i am making mistake). This is the function i am using to read the stored data

TI_Fee_Read(BlockNumber,BlockOffset,Read_Ptr,Length); 

Below code i am using ,

#define WRITE_SIZE 16

void FRAMWrite(void);

unsigned char count = 0;
unsigned long data;

#if defined(__TI_COMPILER_VERSION__)
#pragma NOINIT(FRAM_write)
uint8_t FRAM_write[WRITE_SIZE];
#elif defined(__IAR_SYSTEMS_ICC__)
__persistent unsigned long FRAM_write[WRITE_SIZE] = {0};
#elif defined(__GNUC__)
unsigned long __attribute__((persistent)) FRAM_write[WRITE_SIZE] = {0};
#else
#error Compiler not supported!
#endif

int main(void)
{
WDTCTL = WDTPW | WDTHOLD; // Stop WDT

// Configure GPIO
P1OUT &= ~BIT0; // Clear P1.0 output latch for a defined power-on state
P1DIR |= BIT0; // Set P1.0 to output direction

// Disable the GPIO power-on default high-impedance mode to activate
// previously configured port settings
PM5CTL0 &= ~LOCKLPM5;

// Initialize dummy data
data = 0x00010001;

while(1)
{
data += 0x00010001;
FRAMWrite();
count++;
//if (count > 100)
{
P1OUT ^= 0x01; // Toggle LED to show 512K bytes
count = 0; // ..have been written
// data = 0x00010001;
}
}
}

void FRAMWrite(void)
{
unsigned int i=0;

for ( i= 0; i< 16; i++)
{
FRAM_write[i] = data;
}
}

and i have changed linker script file as 

/* ============================================================================ */
/* Copyright (c) 2017, Texas Instruments Incorporated */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or without */
/* modification, are permitted provided that the following conditions */
/* are met: */
/* */
/* * Redistributions of source code must retain the above copyright */
/* notice, this list of conditions and the following disclaimer. */
/* */
/* * Redistributions in binary form must reproduce the above copyright */
/* notice, this list of conditions and the following disclaimer in the */
/* documentation and/or other materials provided with the distribution. */
/* */
/* * Neither the name of Texas Instruments Incorporated nor the names of */
/* its contributors may be used to endorse or promote products derived */
/* from this software without specific prior written permission. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" */
/* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, */
/* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
/* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR */
/* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, */
/* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, */
/* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; */
/* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, */
/* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR */
/* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */
/* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/* ============================================================================ */

/******************************************************************************/
/* lnk_msp430fr6989.cmd - LINKER COMMAND FILE FOR LINKING MSP430FR6989 PROGRAMS */
/* */
/* Usage: lnk430 <obj files...> -o <out file> -m <map file> lnk.cmd */
/* cl430 <src files...> -z -o <out file> -m <map file> lnk.cmd */
/* */
/*----------------------------------------------------------------------------*/
/* These linker options are for command line linking only. For IDE linking, */
/* you should set your linker options in Project Properties */
/* -c LINK USING C CONVENTIONS */
/* -stack 0x0100 SOFTWARE STACK SIZE */
/* -heap 0x0100 HEAP AREA SIZE */
/* */
/*----------------------------------------------------------------------------*/
/* Version: 1.204 */
/*----------------------------------------------------------------------------*/

/****************************************************************************/
/* Specify the system memory map */
/****************************************************************************/

MEMORY
{
TINYRAM : origin = 0x0006, length = 0x001A
PERIPHERALS_8BIT : origin = 0x0020, length = 0x00E0
PERIPHERALS_16BIT : origin = 0x0100, length = 0x0100
RAM : origin = 0x1C00, length = 0x0800
INFOA : origin = 0x1980, length = 0x0080
INFOB : origin = 0x1900, length = 0x0080
INFOC : origin = 0x1880, length = 0x0080
INFOD : origin = 0x1800, length = 0x0080
FRAM : origin = 0x4400, length = 0xBB80
FRAM2 : origin = 0x10000,length = 0x14000
JTAGSIGNATURE : origin = 0xFF80, length = 0x0004, fill = 0xFFFF
BSLSIGNATURE : origin = 0xFF84, length = 0x0004, fill = 0xFFFF
IPESIGNATURE : origin = 0xFF88, length = 0x0008, fill = 0xFFFF
INT00 : origin = 0xFF90, length = 0x0002
INT01 : origin = 0xFF92, length = 0x0002
INT02 : origin = 0xFF94, length = 0x0002
INT03 : origin = 0xFF96, length = 0x0002
INT04 : origin = 0xFF98, length = 0x0002
INT05 : origin = 0xFF9A, length = 0x0002
INT06 : origin = 0xFF9C, length = 0x0002
INT07 : origin = 0xFF9E, length = 0x0002
INT08 : origin = 0xFFA0, length = 0x0002
INT09 : origin = 0xFFA2, length = 0x0002
INT10 : origin = 0xFFA4, length = 0x0002
INT11 : origin = 0xFFA6, length = 0x0002
INT12 : origin = 0xFFA8, length = 0x0002
INT13 : origin = 0xFFAA, length = 0x0002
INT14 : origin = 0xFFAC, length = 0x0002
INT15 : origin = 0xFFAE, length = 0x0002
INT16 : origin = 0xFFB0, length = 0x0002
INT17 : origin = 0xFFB2, length = 0x0002
INT18 : origin = 0xFFB4, length = 0x0002
INT19 : origin = 0xFFB6, length = 0x0002
INT20 : origin = 0xFFB8, length = 0x0002
INT21 : origin = 0xFFBA, length = 0x0002
INT22 : origin = 0xFFBC, length = 0x0002
INT23 : origin = 0xFFBE, length = 0x0002
INT24 : origin = 0xFFC0, length = 0x0002
INT25 : origin = 0xFFC2, length = 0x0002
INT26 : origin = 0xFFC4, length = 0x0002
INT27 : origin = 0xFFC6, length = 0x0002
INT28 : origin = 0xFFC8, length = 0x0002
INT29 : origin = 0xFFCA, length = 0x0002
INT30 : origin = 0xFFCC, length = 0x0002
INT31 : origin = 0xFFCE, length = 0x0002
INT32 : origin = 0xFFD0, length = 0x0002
INT33 : origin = 0xFFD2, length = 0x0002
INT34 : origin = 0xFFD4, length = 0x0002
INT35 : origin = 0xFFD6, length = 0x0002
INT36 : origin = 0xFFD8, length = 0x0002
INT37 : origin = 0xFFDA, length = 0x0002
INT38 : origin = 0xFFDC, length = 0x0002
INT39 : origin = 0xFFDE, length = 0x0002
INT40 : origin = 0xFFE0, length = 0x0002
INT41 : origin = 0xFFE2, length = 0x0002
INT42 : origin = 0xFFE4, length = 0x0002
INT43 : origin = 0xFFE6, length = 0x0002
INT44 : origin = 0xFFE8, length = 0x0002
INT45 : origin = 0xFFEA, length = 0x0002
INT46 : origin = 0xFFEC, length = 0x0002
INT47 : origin = 0xFFEE, length = 0x0002
INT48 : origin = 0xFFF0, length = 0x0002
INT49 : origin = 0xFFF2, length = 0x0002
INT50 : origin = 0xFFF4, length = 0x0002
INT51 : origin = 0xFFF6, length = 0x0002
INT52 : origin = 0xFFF8, length = 0x0002
INT53 : origin = 0xFFFA, length = 0x0002
INT54 : origin = 0xFFFC, length = 0x0002
RESET : origin = 0xFFFE, length = 0x0002
}

/****************************************************************************/
/* Specify the sections allocation into memory */
/****************************************************************************/

SECTIONS
{
GROUP(RW_IPE)
{
GROUP(READ_WRITE_MEMORY)
{
.TI.persistent : {} /* For #pragma persistent */
.cio : {} /* C I/O Buffer */
.sysmem : {} /* Dynamic memory allocation area */
} PALIGN(0x0400), RUN_START(fram_rw_start)

GROUP(IPENCAPSULATED_MEMORY)
{
.ipestruct : {} /* IPE Data structure */
.ipe : {} /* IPE */
.ipe_const : {} /* IPE Protected constants */
.ipe:_isr : {} /* IPE ISRs */
.ipe_vars : type = NOINIT{} /* IPE variables */
} PALIGN(0x0400), RUN_START(fram_ipe_start) RUN_END(fram_ipe_end) RUN_END(fram_rx_start)
} > 0x4400

.cinit : {} > FRAM /* Initialization tables */
.pinit : {} > FRAM /* C++ Constructor tables */
.binit : {} > FRAM /* Boot-time Initialization tables */
.init_array : {} > FRAM /* C++ Constructor tables */
.mspabi.exidx : {} > FRAM /* C++ Constructor tables */
.mspabi.extab : {} > FRAM /* C++ Constructor tables */
#ifndef __LARGE_DATA_MODEL__
.const : {} > FRAM /* Constant data */
#else
.const : {} >> FRAM | FRAM2 /* Constant data */
#endif

.text:_isr : {} > FRAM /* Code ISRs */
#ifndef __LARGE_CODE_MODEL__
.text : {} > FRAM /* Code */
#else
.text : {} >> FRAM2 | FRAM /* Code */
#endif
#ifdef __TI_COMPILER_VERSION__
#if __TI_COMPILER_VERSION__ >= 15009000
#ifndef __LARGE_CODE_MODEL__
.TI.ramfunc : {} load=FRAM, run=RAM, table(BINIT)
#else
.TI.ramfunc : {} load=FRAM | FRAM2, run=RAM, table(BINIT)
#endif
#endif
#endif

.jtagsignature : {} > JTAGSIGNATURE /* JTAG Signature */
.bslsignature : {} > BSLSIGNATURE /* BSL Signature */

GROUP(SIGNATURE_SHAREDMEMORY)
{
.ipesignature : {} /* IPE Signature */
.jtagpassword : {} /* JTAG Password */
} > IPESIGNATURE

.bss : {} > RAM /* Global & static vars */
.data : {} > RAM /* Global & static vars */
.TI.noinit : {} > FRAM /* For #pragma noinit */
.stack : {} > RAM (HIGH) /* Software system stack */
.tinyram : {} > TINYRAM /* Tiny RAM */

but write to this location is not happening.....

Thank you,

Regards,

Anand Kumar N S