Cannot program option bytes on STM32L562 (STM32L562E-DK)

[dberliner]

I am trying to run the Secure Boot examples from STM32CubeL5 and have everything built, but on step 2 where I run `TFM_SBSFU_Boot\STM32CubeIDE\regression.sh` I am having an error where I cannot program the option bytes.(Another similar thread was with someone who bought a counterfeit part so I'll also mention that I bought the kit from ST.)

This is the script output

$ ./regression.sh 
regression script started
Regression to RDP 0, enable tz
      -------------------------------------------------------------------
                        STM32CubeProgrammer v2.19.0                  
      -------------------------------------------------------------------

ST-LINK SN  : 004600313137510B33333639
ST-LINK FW  : V3J13M4
Board       : STM32L562E-DK
Voltage     : 3.29V
SWD freq    : 8000 KHz
Connect mode: Hot Plug
Reset mode  : Software reset
Device ID   : 0x472
Revision ID : Rev Z
Device name : STM32L5xx
Flash size  : 512 KBytes (default)
Device type : MCU
Device CPU  : Cortex-M33
BL Version  : --


UPLOADING OPTION BYTES DATA ...

  Bank          : 0x00
  Address       : 0x50022040
  Size          : 40 Bytes

[==================================================] 100% 

  Bank          : 0x01
  Address       : 0x50022060
  Size          : 16 Bytes

[==================================================] 100% 


PROGRAMMING OPTION BYTES AREA ...
Warning: Option Byte: rdp, value: 0xAA, was not modified.
Warning: Option Byte: tzen, value: 0x1, was not modified.

Warning: Option Bytes are unchanged, Data won't be downloaded
Time elapsed during option Bytes configuration: 00:00:00.003
Remove bank1 protection
      -------------------------------------------------------------------
                        STM32CubeProgrammer v2.19.0                  
      -------------------------------------------------------------------

ST-LINK SN  : 004600313137510B33333639
ST-LINK FW  : V3J13M4
Board       : STM32L562E-DK
Voltage     : 3.29V
SWD freq    : 8000 KHz
Connect mode: Under Reset
Reset mode  : Hardware reset
Device ID   : 0x472
Revision ID : Rev Z
Device name : STM32L5xx
Flash size  : 512 KBytes (default)
Device type : MCU
Device CPU  : Cortex-M33
BL Version  : --


Hard reset is performed

UPLOADING OPTION BYTES DATA ...

  Bank          : 0x00
  Address       : 0x50022040
  Size          : 40 Bytes

[==================================================] 100% 

  Bank          : 0x01
  Address       : 0x50022060
  Size          : 16 Bytes

[==================================================] 100% 


PROGRAMMING OPTION BYTES AREA ...
Warning: Option Byte: secwm1_pend, value: 0x0, was not modified.
Warning: Option Byte: wrp1a_pend, value: 0x0, was not modified.
Warning: Option Byte: wrp1b_pend, value: 0x0, was not modified.

  Bank          : 0x00
  Address       : 0x50022040
  Size          : 40 Bytes



Reconnecting...
Reconnected !


UPLOADING OPTION BYTES DATA ...

  Bank          : 0x00
  Address       : 0x50022040
  Size          : 40 Bytes

[==================================================] 100% 

  Bank          : 0x01
  Address       : 0x50022060
  Size          : 16 Bytes

[==================================================] 100% 

OPTION BYTE PROGRAMMING VERIFICATION:

Error: Expected value for Option Byte "secwm1_pend": 0x0, found: 0x75
Error: Expected value for Option Byte "secwm1_pstrt": 0x7F, found: 0x0
Error: Expected value for Option Byte "wrp1a_pend": 0x0, found: 0x23
Error: Expected value for Option Byte "wrp1a_pstrt": 0x7F, found: 0x4
Error: Option Byte Programming failed Or modified by application after OB_LAUNCH

Time elapsed during option Bytes configuration: 00:00:02.122
regression script failed, press a key

If I open STM32CubeProrammer and edit the fields manually I get the same errors.

12:35:55 : UPLOADING OPTION BYTES DATA ...
12:35:55 :   Bank          : 0x00
12:35:55 :   Address       : 0x50022040
12:35:55 :   Size          : 40 Bytes
12:35:55 :   Bank          : 0x01
12:35:55 :   Address       : 0x50022060
12:35:55 :   Size          : 16 Bytes
12:35:55 : OPTION BYTE PROGRAMMING VERIFICATION:
12:35:55 : Error: Expected value for Option Byte "SECWM1_PEND": 0x0, found: 0x75
12:35:55 : Error: Expected value for Option Byte "WRP1A_PEND": 0x0, found: 0x23
12:35:55 : Error: Option Byte Programming failed Or modified by application after OB_LAUNCH
12:35:55 : Time elapsed during option Bytes configuration: 00:00:02.124
12:40:06 : Disconnected from device.

I'm not sure where to go from here to debug this. I have tried this on Windows and Linux with the exact same results so I don't think its a problem with my host tools.

[Imen.D]

Hello @dberliner ,

Perform a Full chip erase under the "Erase & Programming" tab. Then, reset the board and try running the code again. How to program STM32 Option Bytes with the HAL API - STMicroelectronics Community

[dberliner]

When I try to run a full chip erase I get:

15:07:08 : MASS ERASE ... 
15:07:08 : Error: failed to erase memory
15:07:08 : Error: Mass erase operation failed.Please verify flash protection

Same results when I try connecting under reset.

[Imen.D]

Check the power supply and that the target voltage is stable.

[dberliner]

I'm using the USB port and have tried several cables directly plugged into the USB ports on my PC. I need to find some wires for my bench supply so I'll update with that when I'm able. I dont have anything more complex than a multimeter to verify voltage but short of a hardware defect this shouldn't be an issue.