S32K144: FlexIO Master Receive Blocked for more than 13 bytes

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S32K144: FlexIO Master Receive Blocked for more than 13 bytes

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sundaram_v
Contributor II

Hello Team,

Currently, we have two S32K144 devices, and one is acting as an IIC master and the other as a slave.

We were implementing the FLEXIO mechanism (Master and Slave) for communication between two S32K144 devices using FREERTOS. We were using the RTM 3.0.0 SDK.

Our communication protocol follows: for each master request, the slave should respond with 15 bytes.

But we understood that FLEXIO Master Receive will support only up to 13 bytes; if it is more than 13 bytes, it is getting asserted.

Could you please help with some suggestions on this? This is very important for us.

Thanks
Sundar

 

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Robin_Shen
NXP TechSupport
NXP TechSupport

Hi Sundar,

Please update the S32K1 SDK to RTM 3.0.3 or higher. It was fixed in RTM3.0.3, read S32SDK_for_S32K1xx_RTM_3.0.3_ReleaseNotes.pdf 

FlexIO_I2C There is a maximum limit of 13 bytes on the size of any transfer S32SDK_for_S32K1xx_RTM_3.0.3_ReleaseNotes.png


Best Regards,
Robin
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