[Paparazzi-devel] On-board data logger

[Steve Joyce]

I would like to log some messages to an SD card onboard the aircraft as a 
backup to the normal telemetry over the datalink.

I see this is on the hardware wishlist and there is some code to write to SD 
cards documented on the data logger page on the Wiki.

I am thinking you could use a "DOSonchip" breakout board or an ALFATxp chip 
to make file handling easier and communicate over spi.  The question is what 
is the best way to integrate it into the paparazzi code?  Ideally you could 
define it as an auxiliary datalink device in your airframe and have a 
separate telemetry section but it requires a bit of coding.

Does anyone have some advice about how to approach it? has anyone done it 
already?  Is it a dumb idea?

regards,
Steve