Quote:
Originally Posted by sawickm
DJB,
I did not realize that the some PICs had an optional built-in CAN controller (eCAN). What Cougar interface hardware are you using on the ATmega168 for CAN bus? schematic? I know you discussed this issue on another thread, but progress info on it died out.
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There is pretty much only one choice for an add-on CAN controller chip. The MCP2515. It connects to a 4 wire SPI bus. The Cougar board has almost every signal needed on the ISP programming header (GND, +5V, the three high speed SPI lines) . Only the chip select line needs to be picked up from one of the unused pins on the PIC (PD2, PD3, or PD4).