TMS320F28335: How to initialize the DATA_SECTION variables

sumanth padarthy38

Part Number: TMS320F28335

I used DATA_SECTION many times for applications for storing the data, but never had the need to initialize those variables.

I am storing long data of arrays in DATA_SECTION in XINTF zone 7.

If all the variables needs to be initialized with same values, i would use 'for loop'

If number of variables are small, i would initialize individually.

Below array is for example. Actual size of the buffer would be around 200+ length.

Eg: Array_Input_Buffer[] = {1, 1.11896985452742, 1.08979021355160,0.938253665384576};

how to initialize the buffer ?

I am using CCS9 with v20.2.4 LTS compiler.

over 4 years ago

0 Chester Gillon over 4 years ago

Guru 92251 points

sumanth padarthy38 said:
how to initialize the buffer ?

It's an old thread, but using external memory as RAM has some example code on how to configure the XINTF before the C run-time library initialisation starts.

0 tlee over 4 years ago

TI__Guru 62975 points

sumanth,

In addition to Chester's recommendation, you can also look into the SECTIONS directive for the linker command file that is described in the ASM Tools guide in case you are planning to run from flash. You can store the initialized buffer to flash and have the C-compiler copy the contents over to XINTF prior to main().

-Tommy

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28335: How to initialize the DATA_SECTION variables