Cannot write to Memory on STM32F071V8

Posted on January 28, 2016 at 12:28

Hi,

I get the following error when trying to write to memory with the latest STLink Utility:

12:09:09 : ST-LINK SN : 48FF6E064967535727520587

12:09:09 : ST-LINK Firmware version : V2J25S4

12:09:09 : Connected via SWD.

12:09:09 : SWD Frequency = 0,9 MHz.

12:09:09 : Connection mode : Normal.

12:09:09 : Device ID:0x448

12:09:09 : Device flash Size : 64KBytes

12:09:09 : Device family :STM32F072xx/F078xx

12:09:42 : Internal command error

12:09:42 : Error occured during program operation!

12:09:42 : Programming error @: 0x00000000

Boot0 is pulled to ground with  a 10k resistor I hope this is enough.

I can write single Words to address 0x08000000 but not to address 0x00000000. I could imagine that something is blocking my write attempts, but it doesn't seem to be any FLASH protection.

If somebody could point me to the right direction I would be glad.

Regards,

Kilian