I’ve been using my STM32L053 DISCOVERY board for a few months. It worked until yesterday. I wrote a program to write a 4 char array to eeprom, under my lecturers supervision, and suddenly my and four of my student mates boards “crashed“ during debugging session. I am using KeilV18.104.22.168 version, toolchain is MDK-ARM Cortex-M0/M0+ 256K.
Those are the errors that we are getting:E310 : Debug access failed - cannot read address 0xF0000FE4 (accsize ‘4’, AP ‘0’)Error: Flash download failed - Target DLL has been cancelled
We tried reinstalling the drivers and restarting our computers. We also tried reflashing firmware with STM32CubePrg, changed debug connecting settings in project options - neither of the above works to solve our problem.
Anyone has any ideas how to solve this?
Adding a picture of the errors I am getting:
I have stm32mp157a and a similar error, it helped me:1. uncheck “Debug Description - Enable” on the Pack tab.After that, the device disappears from the SW Device list on the Debug tab - but this is not an error.2. uncheck “Update Target before Debugging” in Utilities tab
View all questions in Keil forum