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Boardwalk :: Forum List Luminary Micro Forums Design Stellaris 2006

kcrajesh

Junior Boarder 		Click here to see the profile of this user

2007/01/02 07:18

I2C and OLED

Can both the OLED and I2C be used on the LM3S811 Eval. board.

I notice that PB3/I2CSDA and PB2/I2CSCL are used to connect to the OLED.

TIA.

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LMI Eric

Moderator 		Click here to see the profile of this user

2007/01/02 10:33

Re:I2C and OLED

Yes, that is definitely possible as long as the other device(s) have different slave addresses.

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kcrajesh

Junior Boarder 		Click here to see the profile of this user

2007/01/03 05:59

Re:I2C and OLED

Eric

Thanks for the reply.

My device has a slave address of 0x42. However I am concerned with the following text onthe Eval. board manual

Note that the SSD0303’s I2C bus implementation is not 100% compliant with the I2C specification.
Designers should refer to the SSD0303 datasheet before connecting other I2C devices to the bus."


I have requested Solomon Systech for the datasheet and am waiting for it.

TIA.

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LMI Eric

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2007/01/03 09:28

Re:I2C and OLED

Yes, unfortunately the I2C controller in the display is a bit tricky to use. There were some very strange delays that had to be added to the OSRAM driver to get things working reliably.

To my knowledge, the behavior of the OSRAM display shouldn't affect communication with other devices as long as transfers to the display are properly handled.

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