One addition: found this command in the documentation of flash encryption in the chaper to re-flash updated partitions

But it creates the same problem

Hi I followed the documentation to enable Secure Boot and Flash Encryption for my ESP32-C2 platform. I choose development mode to be able to still download plain text images using the UART downloader. The flashing of the initial image succeeded. I see in the traces from the bootloader that secure bo...

Thanks for the reply. OK I understand that there are ways to open the plastic package, but usually there would be no access to the SiP flash using normal pins I guess. But anyway a good point to maybe enable flash encryption for this scenario as well.

Hi, just a general question about the usage of flash encryption. The documentation says Flash encryption is intended for encrypting the contents of off-chip flash memory. What does that exactly mean? Does it only make sense for an ESP chip that has a separate flash chip attached via SPI? Or is it al...

Hi just my two cents on this. At least for the ES32-C2 I found out that the default hardware setting for the main XTAL frequency in sdkconfig was wrong for the dev board I was using. It was set to 40MHz instead of 26MHz, which is the correct setting.
Maybe this is the same for the ESP-C3 setup.

Hi and thanks for the reply, even though I am confident that I did exactly what you were suggesting it seems to work now. Maybe something was stuck on my computer and it was healed by a restart. Anyway thanks for your help. I will see if other problems pop up and maybe report that issue here. So far...

short update: I am running the IDE/IDF on WIndows

Hi I am using the Eclipse IDE for Espressif and everything works fine so far. I use the predefined tools in the tool bar to build and download my application. So far so good. I now want to test the Secure Boot feature and according to the doc I need to execute some command line request using e.g. id...

@RobMeades thanks for sharing the analysis. Somehow it seems different from my case, I only see the issue with longer payloads on the bus. All short data communications seems to work as expected. I tried all recommendations from the github issue, but it did not solve the problem.

here is the summary of my timeout trials from today. I found a section in the ESP8694(C2) reference manual: 21.4.7 Timeout Control The I2C master controller has three types of timeout control, namely timeout control for SCL_FSM, for SCL_MAIN_FSM, and for the SCL line. The first two are always enable...