TMS570LS0714: flash erase cause FEE issue

Hello Strong,

In your case, how long will take watchdog to reset? What could happen is: Fapi_BlockErase is taking longer so watchdog kicked in. To confirm this: can you try to disable watchdog and then measure the cycles in Fapi_BlockErase function?

best regards,

David Zhou

Hi David,

Thanks for your reply.

how long will take watchdog to reset?  ----- 300ms

What could happen is: Fapi_BlockErase is taking longer so watchdog kicked in.

 -----  Fapi_BlockErase is run for once in the initiation function before while loop as below.  there would not have watchdog reset when using Fapi_BlockErase.

         the watchdog reset occur when call fee operation function. this function run in while loop in the main function.

while(1)

{

IOO_LVPHV_EN; // 测试代码

WatchDog_Feed(); // 喂狗

App_UDSDTCRecord_OBC(); //  fee operation

IOO_LVPHV_NEN; // 测试代码

}

Hello Strong,

It takes up to 4 seconds to erase a sector or a bank. Once the DWD is enabled, it cannot be disabled except by system reset or power on reset. Customer should change the watchdog reaction (reset --> interrupt only) before calling the API to erase the flash.

Hi QJ,

customer do the watchdog service as below,  you mean calling Fapi_BlockErase will take about 4 seconds? 

do

{

vimDisableInterrupt(15U); /* 禁止APP中断，此传参值根据APP开启的中断号决定，在sys_vim.h文件中可以看到*/

status = Fapi_BlockErase(Bank,Flash_Start_Address,Size_In_Bytes);

vimEnableInterrupt(15U,SYS_FIQ); /* 使能APP中断，此传参值根据APP开启的中断号决定，在sys_vim.h文件中可以看到*/

WatchDog_Feed(); // 喂狗

}while(((++t_Cnt) < 10U) && ( 0U != status));

Hi QJ,

Actually the watchdog issue occur during the while(1) function, not when call Fapi_BlockErase, my understanding is that there also have flash erasing when call the below function in while loop:

App_UDSDTCRecord_OBC(); //  fee operation

but what can't explain is that if they remove Fapi_BlockErase(Bank,Flash_Start_Address,Size_In_Bytes) function which erasing bank0 and run before while(1), there will have no this watchdog reset issue.

Hi QJ,

Update more of customer's test:

1. customer initialize watchdog after Fapi_BlockErase function, still have the issue.

2. Remove this function below, then will not have watchdog reset. this can approve only the FEE operation will cause the watchdog reset.

   App_UDSDTCRecord_OBC(); //  fee operation

Strong,

Since watchdog timeout is 300ms, so any interrupt masked operation which takes 300ms will trigger watchdog. How long does it take App_UDSDTCRecord_OBC() to complete? Can you try to profile it? Can you also add a variable j here to see if the watch dog failed for the very 1st time or it is in the middle ?

int j=0;

while(1)

{

IOO_LVPHV_EN; // 测试代码

WatchDog_Feed(); // 喂狗

App_UDSDTCRecord_OBC(); //  fee operation

j++;

IOO_LVPHV_NEN; // 测试代码

}

printf("%d\n",j);

Also would it be possible to attached a CCS project which demos the issue? We don't need the complete project so you can remove a lot of user application related code but just keep watch dog & Flash API & FEE.

best regards,

David Zhou

Hi David,

Thanks for your support, I post the code attached, and I will send the password by email. it is a full project and can reproduce the issue.

Stronghttps://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/312/8561.Project_5F00_Test3.7z

Hello Strong,

The FEE is emulated EEPROM which is bank7. The FEE driver is generated through the HALCOGen. But customer uses the last sector of the program flash. I suggest customer to use BANK7 and FEE drivers.

Hi QJ,

sorry I not understand " customer uses the last sector of the program flash", I see ti_fee_cfg.c file that configure FEE bank to bank7. and check with customer, they use Halcogen to configure bank7.

const Fee_VirtualSectorConfigType Fee_VirtualSectorConfiguration[TI_FEE_NUMBER_OF_VIRTUAL_SECTORS] =

{

/* Virtual Sector 1 */

{

/* Virtual sector number */ 1U,

/* Bank */ 7U,

/* Start Sector */ (Fapi_FlashSectorType)0U,

/* End Sector */ (Fapi_FlashSectorType)7U

},

/* Virtual Sector 2 */

{

/* Virtual sector number */ 2U,

/* Bank */ 7U,

/* Start Sector */ (Fapi_FlashSectorType)8U,

/* End Sector */ (Fapi_FlashSectorType)15U

}

};