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Iv'e heard it's possible to change the pins drive strength.
Iv'e had several questions regarding this topic:
1. how exactly is the drive strength changed?
2. does the "pin mode" number sent to PinTypeI2C have any effect/connection to this (I aw different values for the SDA pin in different code examples I found)?
3. are there any negative implications to increasing the drive strength? any guidelines I should pay attention to?
Thanks in advance!
Please see below:
The drive strength changes by using this function
This function is called inside PinTypeI2C().
The Pin mode corrosponds to what peripheral you would like that pin to be muxed to. There is a table inside the CC3200 Datasheet that shows what the number should be for I2C.
The drive strength really just depends on what you are trying to control. the pull up or pull down usually can be a weak pull for Digital signals, and strong if your driving a LED or such device.
Let me know if that helps!
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In reply to Vincent Rodriguez:
Vincent - Thank you very much! This clarified the issue for me. One small followup - when you mentioned "PinConfigSet" routine, you wrote "PIN_STRENGTH_2MA|PIN_STRENGTH_4MA" as the second argument. The documentation mentions another option - "PIN_STRENGTH_6MA". Was it left out by mistake or is it not really allowed?
In reply to Tal Ben Porath:
No, it was not left out, you have multiple drive strengths that you can configure. For more info, please refer to page 498 of http://www.ti.com/lit/ug/swru367c/swru367c.pdf
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