s32k312 I2C Clock Source

[Hoon]

[Robin_Shen]

Hi 

Please add Clock_Ip_ReferencePoints and configure AIPS_SLOW_CLK as the MODULE_CLK source of LPI2C.

Best Regards,
Robin
-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "ACCEPT AS SOLUTION" button. Thank you!

- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------

[Hoon]

Hi  @Robin_Shen 

As your guide, I added Clock_Ip_ReferencePoints and set it to AIPS_SLOW_CLK. The problem is that Baud rage is out of spec and causes an error. My target is 400kHz.

[Robin_Shen]

Please change the value of LPI2C Master configurations by refer to CALCULATE S32K312 I2C BAUDRATE IN DETAIL.

[Hoon · Accepted solution]

I solved the I2C clock setting problem according to your guide

I have one problem. I'm trying to use the Lpi2c_Ip_MasterEndTransfer function, but I get the following compiler error as below 

"""  function "Lpi2c_Ip_MasterEndTransfer" declared implicitly """

There is no problem using the other functions below in the Lpi2c_Ip.c file. The same phenomenon occurs when the location of the function is moved to Lpi2c_Ip_MasterDeinit for fear that the Lpi2c_Ip_MasterEndTransfer function has been deactivated by the define process. Is there a related error?

no problem functions

Lpi2c_Ip_MasterDeinit
Lpi2c_Ip_MasterInit
Lpi2c_Ip_MasterSendDataBlocking
Lpi2c_Ip_MasterReceiveDataBlocking

[Robin_Shen]

Please ask another question in the community if you have any questions that are not related to the original topic of an existing case. It helps to keep it clear.

I will be on leave for a week and my colleague will answer your question.