Posted on April 12, 2018 at 17:18When I try to change option bytes, the device gets reset but the app keeps waiting forever: only a manual device reset in DFU mode will make it continue and exit normally.
For example running:
STM32_Programmer_CLI.exe -c port=usb1 -ob BOR_LEV=4
Gets this output:
-------------------------------------------------------------------
STM32CubeProgrammer v1.0.0
-------------------------------------------------------------------
USB speed : Full Speed (12MBit/s)
Manufacturer ID : STMicroelectronics
Product ID : STM32 BOOTLOADER
Serial number : 2076339B5636
Firmware version : 0x011a
Device ID : 0x0435
AREA NAME SECT.NBR ADDRESS SIZE TYPE
Option Bytes 0000 0x1fff7800 0040 B RW
OTP Memory 0000 0x1fff7000 0001 KB RW
Device Feature 0000 0xffff0000 0004 B RW
Device name: STM32L43xxx/STM32L44xxx
Device type: MCU
Device CPU : Cortex_M4
UPLOADING OPTION BYTES DATA ...
Bank : 0x00
Address : 0x1fff7800
Size : 36 Bytes
?????????????????????????????????????????????????? 100%
PROGRAMMING OPTION BYTES AREA ...
Bank : 0x00
Address : 0x1fff7800
Size : 36 Bytes
?????????????????????????????????????????????????? 100%
UPLOADING OPTION BYTES DATA ...
Bank : 0x00
Address : 0x1fff7800
Size : 36 Bytes
Hanging here until reset in DFU mode again:
?????????????????????????????????????????????????? 100%
OPTION BYTE PROGRAMMING VERIFICATION:
Option Bytes successfully programmed
If programming Option Bytes leads to automatic device reset, then the app should not wait for verification, or at least it should have a command line (and GUI) option to skip verification step and exit immediately
#option-bytes #dfu #stm32cube-programmer
