Event logging to sd Card

[MaxBaex]

Events shall be logged to the SD card.

• Measurement values of all Sensors
• Unexpected events. (I2C_Errors, GNSS Reception Gaps,
• Is it possible to log a hard fault, mem fault, bus fault to the sd card? May use a Watchdog and some Noinit RAM?

Status shall be reported via the LEDs:

LED1: SD-Card

• 1/s when writing to card.
• Off if card not available / missing.
• 5/s sd card problem. (Not possible to open a file or card full)

LED2: System State

• 5/s: Waiting for GNSS Fix and initialization. Error if state persists for more than a minute. GNSS might be unconfigured.
• On system active and landed. (e.g. Airspeed below <50kmh)
• 1/s system active and airborne. (e.g. Airspeed above >= 50kmh

LED3 To be defined.

[MaxBaex]

Crashdumps and LED signals are implemented. This shall be sufficient for now.