TMS320F28379D: Flash-API programming same address without erasing sector not working

Dominic Malane

Part Number: TMS320F28379D

Hello,

I'd like to store a bunch of data in a specific flash sector of the device and depending on some conditions I'd like to change some of those values. So far programming the sector with the initial values is working. But when I want to reprogram one value of the sector which was already programmed this is not possible. My workaround right now is to read all values erase the sector and programm the new values. Is there a way to reprogramm specific addresses without erasing the complete sector?

Regards,

Dominic

over 7 years ago

0 Vamsi Gudivada over 7 years ago

TI__Guru* 87155 points

Dominic,

You can not reprogram a given Flash location without erasing that sector.

You don't have to erase the sector every time you want to update the value. You can implement a simple EEPROM emulation method in Flash as explained in https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/319481 - This way you don't have to erase the Flash for every update.

This thread has similar discussion: https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/591767?CCS-TMS320F28377D-How-to-read-and-write-data-to-the-MCU-internal-Flash

Thanks and regards,

Vamsi

0 Dominic Malane over 7 years ago in reply to Vamsi Gudivada

Prodigy 160 points

Hello Vamsi,

Thank you very much for this information. Since I reprogramm the flash only in rare cases I decided to erase the flash for every update. The EEPROM soluation is very interesting. I ll keep that in mind.

Regards,

Dominic

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28379D: Flash-API programming same address without erasing sector not working