topic Re: Basic Configuration for I2C on KL27 in Kinetis Microcontrollers

Basic Configuration for I2C on KL27

RicardoRuiz18a — Mon, 24 May 2021 02:15:05 GMT

I have been searching in the forum about some examples of how to configure and use i2c but couldn't found any. where i can find some example? Does not matter if is not for KL27, I just want to know how to configure it.

Thank you

Re: Basic Configuration for I2C on KL27

ErichStyger — Mon, 24 May 2021 04:49:39 GMT

Hi @RicardoRuiz18a ,

there are examples in the SDK, just use them with the MCUXpresso IDE:

I hope this helps,

Erich

Re: Basic Configuration for I2C on KL27

Robin_Shen — Mon, 24 May 2021 06:48:03 GMT

Hi RicardoRuiz18a,

Please Select Development Board and then Build MCUXpresso SDK v2.9.0 of KL27.

First you need to install SDK in MCUXpresso IDE, then import examples from SDK.
Here you can refer several I2C example for FRDM-KL27Z.

Best Regards,
Robin
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Re: Basic Configuration for I2C on KL27

bobpaddock — Mon, 24 May 2021 12:00:48 GMT

Repeated Start is broken in parts that have the Double Buffered I2C module such as the KL27.
There are a few discussion about it in the forms.

The SDK gets around the issue by inserting undocumented NOPs to outlast the hardware race condition.