About otavio.maciel

otavio.maciel · 2023-02-06

Hello dear! I'm developing a new product. I would like use the STM32 F1 series, but I was surprised with this: https://blog.zapb.de/stm32f1-exceptional-failure/The F1 Series don't have RDP Level 2 protection, in this case, what's the most security wa...

otavio.maciel · 2022-12-20

Hello guys, I have a problem with my project. I'm development the PS/2 (device, keyboard-like) protocol with my STM32F103C8T6 (Bluepill). When i convert my port to the open collector output, the noise appear in the PS/2 bus. In this moment, the STM32...

otavio.maciel · 2023-02-06

So what you are telling me is that F1 is not safe compared to current technologies.What is the difference in firmware protection from an AVR to the F1? Because AVR has been around for a long time and Lock Bits are still enough to protect the firmware...

otavio.maciel · 2023-02-06

Serious?? :sad_but_relieved_face: I just wanted the security I have working with the AVRs and the old 8051s.:loudly_crying_face:

otavio.maciel · 2023-02-06

Cool! No one is going to spend $100k to clone this firmware, my product unit will cost around $7.00, but I intend to sell many units in my country.Using the Cortex-M33 becomes expensive.. :( Going back a bit to the F1 family. How much do you need to ...

otavio.maciel · 2023-02-06

The F030 Series using RDP Level 2 increase the firmware security, correct? Maybe the way out is to use it. What do you think? I want the code to have enough security to make cloning unfeasible.

otavio.maciel · 2022-12-20

The problem is the protoboard! Thank you very much for help! :(

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Firmware Protection (F1 Series)

Noise in the open colector output

Re: Firmware Protection (F1 Series)

Re: Firmware Protection (F1 Series)

Re: Firmware Protection (F1 Series)

Re: Firmware Protection (F1 Series)

Re: Noise in the open colector output