INot a genuine st device. Abort connection

[DRobe.4]

I use an STM32F7805-DK and a Keil IDE and have been working well for a month. Suddenly, I get Not a Genuine ST Device. I installed Keil on a second computer and bought a 2nd STM32F7805-DK but get the same result. What can I do... the drivers on the PCs are up to date, brand new STM32F7805-DK board...?

[Pavel A.]

This is interesting. So, Keil silently expanded their free STM32 Cortex M0 offering to automatically behave as "Lite" with F7.

That's, it works with F7, but limits code to 32 KB like MDK Lite.

Their debugger checks for STM32 and this check is not very reliable.

All problems come from bad, greedy capitalists that do not let software be free!

[DRobe.4]

As far as I know, the Lite version works with many processors, not just F7, and in all of its applications, the Lite version restricts code size to 32 kB. There is no way that I can afford to spend many thousands of $ for the full version of MDK 5, so I am happy to use the free version, even if it has a code size limitation. Keil is, as far as I know, not a charity, so somebody has to pay for their IDE. There are many free IDEs that are funded by companies to promote purchase of their CPUs, but Keil is not one of them. I think that my problems were not related to unreliability of Keil. In fact, the reason that I am using it, rather than the GCC-based free IDEs, is that I like Keil better. People who are grateful for what they have in life live longer than people who are critical.... just a hint.

[Doc_MK]

Re: Not a Genuine ST Device. Abort connection.

I have been using a STM32F103C8T6 based "bluepill" module with the free Keil microvision 5 version with no issues.

Recently, while programming a new module (bluepill), I got the above message. However after dismissing the message, the upload process went right ahead and voi la, - a perfectly working module!

Can anyone shed any light on this curious working of Keil.

Regards.