STM8S003F3P6 is protected

[RomanoLorenzo]

Hi everybody,

I am using the STM8S003F3P6 development board (little blue one bought from AliExpress) and I am trying to program it using ST-LINK V2 (also bought on AliExpress).

I wrote the code using STVD and now I would like to program the MCU. I tried to follow the "standard" procedure to program the microcontoller but it doesn't work. The ST Visual Programmer displays the following error:

Error: The device is protected

I searched for the solution in internet, and everybody says that I have to unlock the Read Out Protection. Those bits were already set to 0, but I cleared them anyway.

This should have solved my problem, but unlikely the problem is still there.

I read the datasheet and I didn't find any solution. I want to say that I tried programming another chip (same microcontroller model, same ST-LINK, same software tools) and everything works perfectly. Can someone help me please?

Thanks,

Lorenzo

[Peter BENSCH]

Welcome, @RomanoLorenzo​, to the community!

There can be two serious problems, since you also bought the ST-LINK/v2 from Aliexpress, which is pretty much a little colored metal box and therefore a fake or counterfeit, right?

But since you can program similar types with the presumed fake, it must inevitably have to do with the STM8, which is probably a counterfeit, as they are very often found on Aliexpress.

So you should contact Aliexpress and try to exchange the board or claim your money back.

Hope that helps?

Regards

/Peter

[RomanoLorenzo]

Thanks Peter for your answer,

The ST-LINK/v2 is 100% fake, it is based on the Geehy APM32F103C8T6 microcontroller, but luckily it works fine.

I tried programming the STM8 again and again, but still doesn't work. I thin you are right; it must be fake!

I will try again, and if i won't be able to program it I will try to decap the chip in order to find out more.

Meanwhile if anybody knows anything more, i appreciate every kind of advice.

Thanks,

Lorenzo