Re: [Amforth-devel] spi master mode?

[Marcin C. <sa...@sa...>]

>> Erich Waelde <ew....@na...> wrote:
>
> The bit $10, which is apparently not set, ist the MSTR bit. That fits
> the symtoms I'm seeing: "spirw" (available in core/words/spirw.asm)
> never returns, because SPIF in register SPSR is never set. No wonder,
> if we are not in master mode to begin with. The bit-bang version
> never looks at SPSR and SPCR.

I've had this when some other device on the SPI bus was pulling /SS low
and thus forced us to be slave.

//Marcin