I2C with the SX28 (SX/B not ASM)

crgwbr

Hey Everyone,
I've been looking into using th PCF8574 in a project, orriganally I was going to use the BS2-40, but for several reasons, I decided to use the SX28 instied.· The BS2p the I2C syntax looks like this:

[font=TimesNewRoman,Bold size=2]I2COUT· Pin, [/font]SlaveID, Address {\LowAddress}, [noparse][[/noparse]OutputData]
[font=TimesNewRoman,Italic size=2]However, in SX/B it looks like there is no place to put the Slave ID or the Address.· How do you specify them.[/font]
Thanks,
crgwbr
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NerdMaster
For
Life

Bean

In SX/B you need to send each byte seperately.

I2CStart Pin
I2CSend Pin, SlaveID
I2CSend Pin, Address
I2CSend Pin, LowAdress
I2CSend Pin, OutputData
I2CStop Pin

See the example in the help file for the I2C commands.

Bean.

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·

crgwbr

Thanks Bean. I forgot about the 1 byte at a time rule in sx/b.

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NerdMaster
For
Life

JonnyMac

Do keep in mind that all of the SX/B I2C commands generate code to deal with I2C timing, so you can use up a bunch of code space if you have too many of these commands in your listing. What do, as with SERIN and SEROUT, is embed these commands into my own subroutines, that way they only get compiled once and I'm able to add features to my calls.