Code Protect

sami · ‎2013-05-26

Posted on May 26, 2013 at 20:51

Hello

After I have finished my project I need to protect my code from being read from JTAG or from serial bootloader ,

Could you guid me or show me how can I protect my code ?

I am using keil . , STM32f407.

Thank you in advanced

Esat

flyer31 · ‎2013-05-26

Posted on May 27, 2013 at 08:13

The easiest way would be, that you set the option byte to read level 1 (menu Target - Option Bytes, do NOT use read level 2 - except you want to configure it such, that absolutely no more re-programming possible on the chip).

You can also program the option byte quite easily from inside your software. You can also do it during Flash programming via Keil - you have to look for an example of Keil, where they use the programming cycle Flash + Option Byte (Project settings, Utilities/Debug).

sami · ‎2013-05-27

Posted on May 27, 2013 at 16:55

Thank you Bil

I still could not do that . I am using keil ..

Could you show a code for this or exmple , please?

Amel NASRI · ‎2013-06-11

Posted on June 11, 2013 at 12:44

Hello,

You can do it with an easy way using the ST-Link utility tool that you can download from this page:

http://www.st.com/web/en/catalog/tools/PF258168

.

All the required documentation is available on the same page.

Best Regards,

ST.MCU

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sami · ‎2013-06-20

Posted on June 20, 2013 at 11:24

Thank you Mayla

I dont have st_link , I have ulink2 keil ,

is there away in the software for example a function , that protect the code ?

martinmartin9129 · ‎2013-06-20

Posted on June 20, 2013 at 15:35

You can put in your code:

FLASH_OB_Unlock();
FLASH_OB_RDPConfig(OB_RDP_Level_1);
FLASH_OB_Launch(); 
FLASH_OB_Lock();