BRD_SD_SLOWDOWN parameter

ArduPlane Plane 3.9
1

Hi!
BRD_SD_SLOWDOWN parameter allow microSD cards to be run at a lower clock to improve reliability, defaults to 0.
I like to always set LOG_BITMAST to 65535 on the Cube with the provided SD card. In this case, which is the recommendend value for BRD_SD_SLOWDOWN? What happens if I set it to 16 or 32?

Thanks!

2

0, that 's why its the default. If its working fine any your not getting errors leave it as it is.If you getting errors then increase it slowly until its fixed. I should think on a cube it will be fine as zero so long as your SD card is good.

3

Thank you Peter for your answer! If 0 is the recommended value, but I can increase that value it if logging start to fail, why I can’t set it to higher values before, so that can improve long term reliability? (like a preventive/conservative measure).
Thanks again!

4

in my experience SD cards either work or not. You can turn down the speed but if you go too far you wont be able to log so much stuff. 0 will work fine in 90% of the cases, after all that is what was used before the parameter was introduced.