LPC5536 I3C HotJoin

[lb_h]

Hello,all

LPC5536 as I3C Controller (CR), the bus is in Free state, Target (TGT) sends a Hotjoin request, the i3c_master_ibi_callback of the CR code recognizes the ibiType as kI3C_IbiHotJoin, but the CR only provides 7 SCL clocks, and then SCL stays high. The logic analyzer waveform is below. May I ask what is causing this to occur.

[Harry_Zhang]

Hi @lb_h 

First, you can refer to the lpc55s36 i3c examples to initialize i3c peripheral.

And I think you can try two directions,

Incorrect timing settings for the SCL clock could disrupt the Hot-Join process.

The I3C controller might not fully transition to the appropriate state for handling a Hot-Join request after detecting a bus free condition.

BR

Harry

[lb_h]

Thanks for your reply, but I still can't pinpoint the problem. the SDK Demos only have examples for handling IbiNormal, not Hotjoin, can you provide one?