Problem during writing to the Flash for MSP432

abdelrahman mohamed

I wanted to write to the flash of the MSP432P401R launchpad

I used this functions first

MAP_PCM_setCoreVoltageLevel(PCM_VCORE1);
FlashCtl_setWaitState(FLASH_BANK0, 2);
FlashCtl_setWaitState(FLASH_BANK1, 2);
MAP_CS_setDCOCenteredFrequency(CS_DCO_FREQUENCY_48);
FlashCtl_unprotectSector(FLASH_MAIN_MEMORY_SPACE_BANK0, FLASH_SECTOR7 | FLASH_SECTOR8 | FLASH_SECTOR9);
FlashCtl_enableWordProgramming(FLASH_IMMEDIATE_WRITE_MODE);
FlashCtl_initiateSectorErase(FLASH_SECTOR7);

then I wrote to the flash using assembly language, but I found that the data is wrote to the flash just after I build the project before actually executing the store instructions

also after I run the code two or three times I got error about writing to the flash, I had to reset the launchpad before using it again

what did I do wrong , and how can I fix that ?

I'm using IAR system

over 8 years ago

0 Chris Sterzik over 8 years ago

TI__Guru 64141 points

Can you confirm that the driverLib APIs are working and that your assembly code is not working? Can you also specify which device/launchpad you are using (Rev B or Rev C silicon)? We recommend that you use the driverLib APIs.

Best Regards,
Chris

0 abdelrahman mohamed over 8 years ago in reply to Chris Sterzik

Prodigy 90 points

My assembly code is working when i'm writing to the RAM ,but if i tried to write to the flash I got flash loader error ,My launchpad is Rev B

0 Evan W over 8 years ago in reply to abdelrahman mohamed

TI__Mastermind 39870 points

Can you confirm that the driverlib APIs are working when you are trying to write to flash? We also recommend that everyone use Rev C (red launchpads). Have you had a chance to upgrade to the new launchpad?

0 abdelrahman mohamed over 8 years ago in reply to Evan W

Prodigy 90 points

If I run this functions without writing to the flash I got flash loader error ,also can you tell me the exact steps so I can write to the flash using API then storing the data to the flash using assembly ? I read the example provided by ti but I couldn't figure out how to write using the assembly as it's very important to my project

0 Evan W over 8 years ago in reply to abdelrahman mohamed

TI__Mastermind 39870 points

Abdelrahman,

My apologies for not getting back to you sooner. We unfortunately do not support writing to flash using assembly. We can assure you though that the ROM C library is very optimized and with it being in ROM, doesn't impact your code space and is reliable. Using Rev C might alleviate your issues though.

**Attention** This is a public forum

MSP low-power microcontrollers

MSP low-power microcontroller forum

Problem during writing to the Flash for MSP432