I'm considering my first LIN bus based project, and I'm wondering how to get started. The RX Renesas Starter Kit (RSK) looks attractive initially, but it's a bit dear. I would need two kits to develop a bus solution, and each kit would cost me (here in Europe) $225 + $75 + VAT (which I can claim back) + fee from courier for collecting VAT (which I can't get back). The kit also includes an e8a, but I already have one of those. Any suggestions?
R8C/25 and most other R8C chips have hardware LIN.
Here's an option that might be less expensive - although the pins could be hard to access:
Almost any other R8C/2x, R8C/L3x or R8C/3x platform would work.
Another option is to make a board like the one from DJ Delorie - just request chip samples from Renesas. And buy one E8A.
I reckon it always easiest to start with a working solution and to then work towards my goal until I'm confident that I know what bits of the hardware I need in my final solution. If I don't buy a starter kit I would just go for a first pass at my target hardware. Although some of your suggestions are for cheap hardware, they don't seem to include LIN transceivers.
You are correct, since neither of these include transceivers. However, the transceiver isn't a requirement for lab-testing the LIN bus and associated software drivers, stacks, etc.
I did a check just now on the R8C/25 kits on Digikey. You can get two of the $225 kits for the
for less than $650.
Testing without transceivers would be a bit of a concern for me as I would have to rig up some sort of circuitry to drive and monitor a single wire bus. I've also discovered that the kits are available in europe for 144 euros, and that makes them quite a lot cheaper for me.
Some helpful chap at Renesas was monitoring this thread and has given me information on the schematics, so I can roll my own hardware with some more confidence. I haven't tried compiling the sample code, but at least I have it!
In reply to Oliver Sedlacek: