When using the simulator, the program runs normally.

i used led toggle to check mcu running.

Seems like you changed the example lab, and added some of variable with initialization value in this RAM section.

The same code,

TMS320F2800137 does not have this issue。

when i changed mcu (2800137 to 2800156),it have this issue.why?

You should change the .cmd file according to the device.

but 2800137 and 2800156 have the same Memory Map.

i am not find the reason.

why?

There is an example for F280015x in motor control SDK, please have a try without any changes on the variables.

youjun zhang said:

HAL_MTR_Handle halMtrHandle[2]; //!< the handle for the hardware abstraction
//!< layer to motor control
HAL_MTR_Obj halMtr[2]; //!< the hardware abstraction layer object
//!< to motor control
#pragma DATA_SECTION(halMtrHandle, "user_data");
#pragma DATA_SECTION(halMtr, "user_data");

The example only has one halMtrHandle and halMtr variable? Any other changes you made?

i add this 

#pragma DATA_SECTION(halHandle, "user_data");

but i changed as follows,the mcu runs normally.

#pragma DATA_SECTION(halHandle, "foc_data");//not used user_data

user_data : > RAMLS0D,
LOAD_START(loadStart_user_data),
LOAD_END(loadEnd_user_data),
LOAD_SIZE(loadSize_user_data)

foc_data : > RAMLS0D,
LOAD_START(loadStart_foc_data),
LOAD_END(loadEnd_foc_data),
LOAD_SIZE(loadSize_foc_data)

i am not find the reason.

What example lab are you using? Can you try the latest example lab in motor control SDK without any changes first?

example lab:tidm_02010_dmpfc_0013x

in the example,#pragma DATA_SECTION(halHandle, "user_data")

this function is not used .

TMS320F2800137 does not have this issue.

when i changed mcu (2800137 to 2800156),it have this issue.why?

I have compared the cmd files of two mcu and they are the same in the same example.

Just different in terms of peripherals, like flash and RAM, they are the same

To be simplify the question. You can remove all of the clean RAM sections functions, just need to clean the using variables in the RAM as required.