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Forum Index : Microcontroller and PC projects : I2C Slave Example

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crackerjack

Senior Member

Joined: 11/07/2011
Location: Australia
Posts: 164
Posted: 04:38am 24 Sep 2011
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I am experimenting with the I2C functionality recently introduced to MMBasic and have had some success with the Maximite operating as the I2C master. I am trying to get the MM to now act as a slave and have not had much success. Does anybody have any code examples or tips on this, particularly relating to addressing and address masking in Slave mode.

I have a Bus Pirate (a very handy bit of kit, by the way) which I am using as the master/I2c sniffer for my experiments...

Thanks in advance,

Lance.
 
crackerjack

Senior Member

Joined: 11/07/2011
Location: Australia
Posts: 164
Posted: 01:20am 25 Sep 2011
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It would seem that the SDA and SCL lines were being held low because I was not actually executing an I2CSSEND in the appropriate SEND interrupt. After sending a single byte of data in the SEND intterupt routine, the lines return to high and things are now making a bit more sense.
 
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