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SPICmd ignored if no channel open?

 
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GTBecker



Joined: 18 Jan 2006
Posts: 457
Location: Cape Coral
Posted: 15 January 2010, 15:34 PM    Post subject: SPICmd ignored if no channel open? Reply with quote
I've found it convenient to switch between SPI master and slave during code testing using either OpenSPI() or OpenSPISlave(). It appears there is no harm in leaving master SPICmds in place while in slave mode; the machine acts like they are ignored if no SPI channel has been opened. Is this a safe practice?

Alternatively I can use conditional compiles, but commenting out just one line is easier.
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dkinzer
Site Admin


Joined: 03 Sep 2005
Posts: 2499
Location: Portland, OR
Posted: 15 January 2010, 16:33 PM    Post subject: Re: SPICmd ignored if no channel open? Reply with quote
GTBecker wrote:
It appears there is no harm in leaving master SPICmds in place while in slave mode
If the SPI interface is already active, as it is if slave mode has been activated, then SPICmd() does nothing.
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