Posts tagged c
What you did not want to know about your code
- 26 September 2025
As any other engineer, I also like to hack around in the weekends at six o’clock in the morning when the family is still asleep. This time I wanted to play around with the new Matter smart home connectivity standard and add some temperature and humidity sensors to my smart home setup.
I bought some esp32-h2 development boards (they support WiFi, Thread and BLE), some SHT31-D sensors and started the old fashioned read the docs to get started.
I must say the espressif docs are well written and the community is very active.
Why unit tests crashed on windows but worked on the microcontroller
- 24 September 2025
When writing cross-platform code, it’s easy to forget that pointers don’t always have the same size. This caused a segmentation fault in one of our unit tests.
On the Aurix MCU, pointers are 32-bit.
In the code a pointer (memory address) was stored in a uint32_t variable.
That worked fine on the target.