Re: [Amforth] Need some help with the SPI

[Matthias T. <mt...@we...>]

Hi,

> You can also use the following words to avoid c!@spi, which is
> missing from the preassembled package for the Arduino:
> 
> 
> \ send a byte, ignore received byte
> : c!spi ( c -- )
>     SPDR c! ( c addr -- )
> ;
> 
>   \ receive a byte, send a dummy one
> : c@spi ( -- c)
>     0 SPDR c! 1 ms SPDR c@
> ;
> 
> SPDR is a constant holding the address of the SPI data register (&78)

Thanks, I've added some comments to the spi.frt file.

Matthias