Warning: #10083-D LOAD placement ignored for "RamParameterDataObject": object is uninitialized

SUNIL SAWANT

Intellectual 955 points

Hi All,

I am using TMS30F2812 MCU.

I am running my application from flash memory. However, 2 variables are copied in RAM.

For copying variables in RAM, i have written following code:

In Main.c

#pragma DATA_SECTION(tTMS320F2812ECanaTransactionParameterDataObject, "RamParameterDataObject")
volatile t__TMS320F2812ECanaTransactionParameterDataObject tTMS320F2812ECanaTransactionParameterDataObject;

#pragma DATA_SECTION(tTMS320F2812ECanaTransactionStatusFlags, "RamTransactionStatusFlags")
volatile t__TMS320F2812ECanaTransactionStatusFlags tTMS320F2812ECanaTransactionStatusFlags;

/* Initialize the RamParameterDataObject section */
memcpy(&u16RamParameterDataObject_RunStart, &u16RamParameterDataObject_LoadStart, (Uint32)&u16RamParameterDataObject_LoadSize);

/* Initialize the RamTransactionStatusFlags section */
memcpy(&u16RamTransactionStatusFlags_RunStart, &u16RamTransactionStatusFlags_LoadStart, (Uint32)&u16RamTransactionStatusFlags_LoadSize);

In Main.h

extern Uint16 u16RamParameterDataObject_LoadStart;
extern Uint16 u16RamParameterDataObject_LoadSize;
extern Uint16 u16RamParameterDataObject_RunStart;

extern Uint16 u16RamTransactionStatusFlags_LoadStart;
extern Uint16 u16RamTransactionStatusFlags_LoadSize;
extern Uint16 u16RamTransactionStatusFlags_RunStart;

In F2812.cmd

    /*** User Defined Sections ***/
   RamParameterDataObject: LOAD = FLASHC, PAGE = 0
                           RUN = RAMM0,   PAGE = 1
                           LOAD_START(_u16RamParameterDataObject_LoadStart),
                           LOAD_SIZE(_u16RamParameterDataObject_LoadSize),
                           RUN_START(_u16RamParameterDataObject_RunStart)

   RamTransactionStatusFlags: LOAD = FLASHC, PAGE = 0
                               RUN = RAMM0,   PAGE = 1
                               LOAD_START(_u16RamTransactionStatusFlags_LoadStart),
                               LOAD_SIZE(_u16RamTransactionStatusFlags_LoadSize),
                               RUN_START(_u16RamTransactionStatusFlags_RunStart)

I have followed the procedure mentioned in application note SPRA958L.pdf. Section 4.6.2, page 19 and page 20.

Still i am getting following warnings:

#10083-D LOAD placement ignored for "RamParameterDataObject": object is uninitialized

#10083-D LOAD placement ignored for "RamTransactionStatusFlags": object is uninitialized

Please suggest way to suppress the warning.

Thank you,

Sunil Sawant

over 10 years ago

0 Gautam Iyer over 10 years ago

Guru 192875 points

Hi Sunil,

Please refer this doc for copying sections from Flash to RAM while execution:

Flash to RAM.pdf

Regards,

Gautam

0 David M. Alter over 10 years ago

TI__Guru 61235 points

Sunil,

RamParameterDataObject and RamTransactionStatusFlags are uninitialized variables. That is, they have no initial value. There is nothing to copy. They should just be linked to RAM, not flash. It's like doing this:

int x;

'x' is a variable. It has no value until you give it one in the code. Therefore, there is nothing to copy. You cannot link x to flash. It should be linked to RAM, and again there is nothing to copy.

Regards,
David

C2000™︎ microcontrollers

C2000 microcontrollers forum

Warning: #10083-D LOAD placement ignored for "RamParameterDataObject": object is uninitialized