Reply To: SD card logging problem on Controllino maxi automation

[Fruitdas]

I have made some progress.

As described in the FAQ: number 7:

Call this function prior to usage of the SPI bus:

Controllino_RTC_init();

This was only part of the solution. When I connected the Logic analyser, it worked. When I disconnected, it stopped working. The logic analyser input has a 100kOhm pull down resistor. I also had to add a small (27pF) capacitor in parallel with the resistor. This is on the clock line and seems to filter enough for proper operations.

I hope we have found a stable solution.