[Diy_efi] Data Logger CPU schematic and C for review

[Bernd Felsche]

On Monday 05 February 2007 18:27, Ian Molton wrote:
> Bernd Felsche wrote:
> > Perhaps better to focus on CAN aspects of the logger.

> Remember its an interceptor too...pure can isnt much use. Good for
> readout though as you suggest.

CAN can't provide the signal paths to the devices being monitored or
controlled unless they themselves are CAN-aware. But CAN does
provide for controlling how for example, the logger/interceptor does
its work... as well as providing lots of data channels for logging,
not just to a display panel, but also removable storage modules.

If the logger is sufficiently programmed, plugging in a storage
device of a type known to the CANbus could automagically cause it to
provide logging data to the removable module.

> > A separate CAN-based display module can then display any interesting
> > quantities that may be made available via the CAN properties of the
> > logger.

> Is there a good document about CAN somewhere? I'd like to know how fast
> it is, among other things...

Fast enough for most things; up to 1 Mbps.
	http://www.interfacebus.com/Design_Connector_CAN.html
	http://www.can-cia.org/can/

Data sheets and application notes from the chipmakers also provide
detailed information. Else IEEE has documents online for members.