Hi!
Have bought a Primer to play with. I am not interested in Circle, so erased all stm32 flash content. Of course, several times have restored CircleOs, to be sure I am on the right way.
Next step was to load any valid stm32f103rbt6 application. Unfortunately, without any kind of analysis, just loaded Ride7 Example\ARM\test project.
Flash successfully programmed, but from now on no connection with RLink is possible.
As I can see now, testR7 project for stm32 configures pins 6..13 of PORTC as a general output GPIO. They are mostly LED control in PRIME but 13, used as shutdown pin, and it has LOW level while Prime is on. So I have to cut off the wire from stm32 pin 2 (close to J3.5 on the back side) and released U9 6pin (it has HIGH level now). But nothing changed - Rlink still not accesible.
I am sure some other pins may have wrong state and block the ST7265.
Could you please tell me where to dig, otherwise I will be forced to fully detouch stm32 from ST7265 - too much dangerous work...