TMS320F28027: TMS320F28027: EXPLAIN THE CODE

SIB CHAKRABARTI

Prodigy 50 points

Part Number: TMS320F28027

Pl. explain the following code in TMS320f28027 as a part of main() and what it does:

////////////////////////////////////////////////////////////////////////////////////////

MemCopy(&RamfuncsLoadStart, &RamfuncsLoadEnd, &RamfuncsRunStart);

////////////////////////////////////////////////////////////////////////////////////////

over 4 years ago

0 Siddharth Deshpande over 4 years ago

TI__Mastermind 36305 points

Hi,

memcpy function is used copy the ram function sections from Flash to RAM.

When the complete code is placed in Flash, there are a few functions such as interrupt and flash configuration related functions etc. need to be run in RAM either for faster execution or due to the design need.

All these functions can be assigned to ramfunction section. At the device start memcpy will takes care to copy these functions from Flash to RAM.

Best Regards

Siddharth

0 SIB CHAKRABARTI over 4 years ago in reply to Siddharth Deshpande

Prodigy 50 points

how does the compiler understand the symbols: RamfuncsLoadStart, RamfuncsLoadEnd, RamfuncsRunStart ? where are they declared ?

0 Siddharth Deshpande over 4 years ago in reply to SIB CHAKRABARTI

TI__Mastermind 36305 points

Hi,

These symbols will be initialized by the linker. All you have to do is call the memcopy function with these variables as the argument. This will copy the variables from flash to ram

If you take a look at your linker file you will see in the sections specification.

Best Regards

Siddharth

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28027: TMS320F28027: EXPLAIN THE CODE