RM44L520: Issue Accessing Flash with F021 API

Andrew Mercer

Part Number: RM44L520
Other Parts Discussed in Thread: HALCOGEN

I have been having a bit of trouble accessing flash using the F021 API. I included the F021_API_CoretexR4_LE_V3D16.lib file into my project and added the following folder to my include path:

C:\ti\Hercules\F021 Flash API\02.01.01\include

I updated my link.cmd file as shown below:

/*----------------------------------------------------------------------------*/
/* Memory Map                                                                 */

MEMORY
{
    VECTORS (X)  : origin=0x00000000 length=0x00000020
    KERNEL  (RX) : origin=0x00000020 length=0x00008000
    FLASH0  (RX) : origin=0x00008020 length=0x000B7FE0
    STACKS  (RW) : origin=0x08000000 length=0x00001000
    KRAM    (RW) : origin=0x08001000 length=0x00000800
    RAM     (RW) : origin=(0x08001000+0x00000800) length=(0x0001e400 - 0x00000800)
    FEE		(RW) : origin=0xF0200000 length=0x00004000 vfill=0xffffffff
    FEE1	(RW) : origin=0xF0204000 length=0x00004000 vfill=0xffffffff
    FEE2	(RW) : origin=0xF0208000 length=0x00004000 vfill=0xffffffff
    FEE3	(RW) : origin=0xF020C000 length=0x00004000 vfill=0xffffffff

/* USER CODE BEGIN (2) */
/* USER CODE END */
}

/* USER CODE BEGIN (3) */
/* USER CODE END */

/*----------------------------------------------------------------------------*/
/* Section Configuration                                                      */

SECTIONS
{
    .intvecs : {} > VECTORS
    /* FreeRTOS Kernel in protected region of Flash */
    .kernelTEXT   : {} > KERNEL
    .cinit        : {} > KERNEL
    .pinit        : {} > KERNEL
    /* Rest of code to user mode flash region */
    .text         : {} > FLASH0
    .const        : {} > FLASH0
    /* FreeRTOS Kernel data in protected region of RAM */
    .kernelBSS    : {} > KRAM
    .kernelHEAP   : {} > RAM
    .bss          : {} > RAM
    .data         : {} > RAM
    .sysmem  : {} > RAM

    FEE_TEXT_SECTION : {} > FLASH0
    FEE_CONST_SECTION : {} > FLASH0
    FEE_DATA_SECTION : {} > RAM


/* USER CODE BEGIN (4) */
/* USER CODE END */
}

After compiling and flashing my board I stepped through with my debugger and get the following error when reaching the first F021 API call:

Can't find a source file at "C:\Sid\work\GIT\catmcuauto-flashapi-f021-int\API\makefile/../Source/FlashStateMachine.InitializeFlashBanks.c"
Locate the file or edit the source lookup path to include its location.

I found another post regarding this error linked below:

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/463257/tms570-fapi_initializeflashbanks-failure-with-linker-for-bootloader

As recommended by one of the commenters, I checked if several memory locations where accessible using the code shown below:

uint32 Read;

Read = *((volatile uint32_t *)0x000U);
Read = *((volatile uint32_t *)0x100U);
Read = *((volatile uint32_t *)0x200U);
Read = *((volatile uint32_t *)0x300U);

Stepping through these lines of code did not cause an abort so it seems that my issues is different than the original poster. Any help at all would be greatly appreciated.

over 3 years ago

0 jagadish gundavarapu over 3 years ago

TI__Guru 74476 points

Hi Andrew,

Is it possible to you to attach your code?

Thanks & Regards,

Jagadish.

0 Andrew Mercer over 3 years ago in reply to jagadish gundavarapu

Prodigy 170 points

I can't provide the whole project as it contains proprietary code but I have included the section of code that should be writing to flash:

m_newLogData.FaultID = eventID;
            m_newLogData.Day = g_SystemTime.Day;
            m_newLogData.Seconds = g_SystemTime.Seconds;
            m_newLogData.Params = m_eventHelp;

            /* Initialize the flash program  sequence for Bank7 */
            m_flashStatus = Fapi_initializeFlashBanks((uint32_t) HCLK_FREQ);
            m_flashStatus = Fapi_setActiveFlashBank(Fapi_FlashBank7);
            m_flashStatus = Fapi_enableEepromBankSectors(prgBANK7_ACTIVESECTORS, (uint32_t) Fapi_FlashSector0);

            /* Wait until Flash State Machine is ready */
            while (FAPI_CHECK_FSM_READY_BUSY == Fapi_Status_FsmBusy) { ; /* Do Nothing */ }
            /*lint -e{740} Cast is OK */
            m_flashStatus = Fapi_issueProgrammingCommand((uint32_t*) m_pNewLog, (uint8_t*) (&m_newLogData), (uint8_t) prgBYTECNT_MAX, (uint8_t*) NULL, (uint8_t) NULL, Fapi_AutoEccGeneration);
            /* Wait until Flash State Machine is ready */
            while (FAPI_CHECK_FSM_READY_BUSY == Fapi_Status_FsmBusy) { ; /* Do Nothing */ }
            while (FAPI_GET_FSM_STATUS != (uint32_t) Fapi_Status_Success) { ; /* Do Nothing */ }

0 Andrew Mercer over 3 years ago in reply to Andrew Mercer

Prodigy 170 points

I have attached an older debug version of the project with the F021 elements updated to demonstrate the issue I have been having. Please let me know if there is any more information you need.

VM2_Code_FreeRTOS_Test.zip

0 Andrew Mercer over 3 years ago in reply to Andrew Mercer

Prodigy 170 points

I am just following up on this.

0 jagadish gundavarapu over 3 years ago in reply to Andrew Mercer

TI__Guru 74476 points

Hi Andrew,

I saw similar to our issue in below thread,

(5) TMS570LS3137: TI Flash and FEE API functions problems - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

There the issue is rectified after they disabled FEE driver in HALCoGen, but in our case i guess it was already disabled. Can you please confirm the same?

Thanks & Regards,

Jagadish.

0 Andrew Mercer over 3 years ago in reply to jagadish gundavarapu

Prodigy 170 points

Thank you for the reply. That is correct, I do not have the FEE driver enabled in HALCoGen.

0 Andrew Mercer over 3 years ago in reply to Andrew Mercer

Prodigy 170 points

I have now tried enabling the FEE driver, Disabling the FEE driver but keeping the created files, disabling the FEE driver and removing the FEE files, and switching the compiler version. One interesting thing to note is when I build the project it takes a suspiciously long time at the following step:

"C:/ti/ccs1110/ccs/utils/tiobj2bin/tiobj2bin.bat" "VM2.out" "VM2.bin" "C:/ti/ccs1110/ccs/tools/compiler/ti-cgt-arm_20.2.6.LTS/bin/ofd470.exe" "C:/ti/ccs1110/ccs/tools/compiler/ti-cgt-arm_20.2.6.LTS/bin/hex470.exe" "C:/ti/ccs1110/ccs/utils/tiobj2bin/mkhex4bin.exe"

I'm not sure if this is of much relevance but it might help.

0 Andrew Mercer over 3 years ago in reply to Andrew Mercer

Prodigy 170 points

The Flash API functions are still not working but the issue isn't related to what I have described above. The reason I am getting the error message above is due to source code not being included with the F021 library files. This causes CCS to provide an error message about not being able to step through the function. If you step over the API call rather than into the function seems to behave as expected. I will mark this as resolved and open a separate ticket about the actual issue I have been having.