I2C with MSP430F2132

Antoine Mattera

Other Parts Discussed in Thread: MSP430F2132

Hi everybody,

I started to study the I2C communication with MSP430F2132 since I would like to make working a LCD display using this protocol (the LCD diplay is NHD-C0216CiZ-FN-FBW-3V from Newhaven display).

What I would like to know is if it's possible to adapt the USI_I2C Library code (basically the Master code) to my specific microC since this library has been made for MSP430F20xx. Does a simple change of the included MSP library in the source will solve it? I checked registers of both microC and they seem to be quite the same but maybe I missed some difference.

If not I guess I have to develop everything by my own? I didn't see other library code for I2C. Both I2C protocol and MSP430's module are still a little bit in the shade to me (is it proper english?) but I understood quite a lot the library code (before noticing that it was for the wrong microC...) and it would be very usefull if I could use it for my tests.

I thanks in advance for any reply and also apologize for my english.

Kind regards,

Antoine

over 15 years ago

0 Bernhard Weller over 15 years ago

Genius 4925 points

The USCI Module in the F2132 is a lot more advanced than the USI of the 20xx series. And it should be easier to get a communication up with it.

I'd suggest to read the manual of the I2C Master mode (of the USCI module, see page 17-15 in the family user guide) carefully and then take a look at the code examples you can download for the F2132, there are 11 examples for I2C and it should be possible to get your display up and running quite fast.

I don't think it is possible to change the USI-Library to use the USCI module as it uses a completely different approach on how to transmit data via I2C.

0 Antoine Mattera over 15 years ago in reply to Bernhard Weller

Prodigy 70 points

Thank you very much Bernhard for the fast reply.

I'll read more carefully this part and I'll see what I can do with it. To my mind the library was easier to use but I was probably wrong. If I face some more issues I'll come back with more specific questions.

I wish you to have a nice day.

Kind regards,

Antoine

0 Priya Thanigai over 15 years ago

TI__Mastermind 26380 points

Antoine,

You need to be using the I2C libraries specifically designed for the USCI on the F2132.

Here are the links:

Using the USCI I2C Master SLAA382

http://focus.ti.com/mcu/docs/litabsmultiplefilelist.tsp?sectionId=96&tabId=1502&literatureNumber=slaa382&docCategoryId=1&familyId=342

Using the USCI I2C Slave SLAA383

http://focus.ti.com/mcu/docs/litabsmultiplefilelist.tsp?sectionId=96&tabId=1502&literatureNumber=slaa383&docCategoryId=1&familyId=342

Regards,

Priya

0 Bernhard Weller over 15 years ago in reply to Priya Thanigai

Genius 4925 points

Oh I didn't know that these documents existed, would have saved me some time on my last project. Well I keep that in mind for the future.

Thanks Priya.

0 Antoine Mattera over 15 years ago in reply to Priya Thanigai

Prodigy 70 points

Thank you so much Triya! That's exactly what I need.

Have a nice day.

Kind Regards,

Antoine

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I2C with MSP430F2132