Re: [Emc-users] MESA 7i43

[andy p. <bod...@gm...>]

On 3 July 2011 12:06, Andrew <par...@gm...> wrote:

> 1. There are several 7i43 models. I guess 7i43-U-4 is what I need?

Probably. The bigger FPGA gives a wider choice of firmwares, there are
some functions that won't fit in the smaller one. EMC2 only supports
the parallel interface.

> 2. Do I need any breakout boards, or servo drives and other stuff can
> be connected directly to 7i43?

You can connect direct to the 7i43, though it isn't the most
convenient of headers. Boards like the 7i33TA make wiring easier (and
include the PWM to voltage conversion, if you are not desperate to do
that yourself)

SPI is a problem. There is an experimental framework that supports the
Mesa Buffered SPI interface, but you would need to write a driver in
comp for your specific encoders. When I say "experimental" I mean that
it isn't even in the development version of EMC2. I can send you a
patch file.

-- 
atp
"Torque wrenches are for the obedience of fools and the guidance of wise men"