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NXP / i3c-slave-design

MIPI I3C Basic v1.0 communication Slave source code in Verilog with BSD license to support use in sensors and other devices.
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The function of HJ? thank you very much #31

Open owen-yang0726 opened 3 years ago

owen-yang0726 commented 3 years ago

Hi dear, Does free version of i3c_slave_design provide the function of HJ?

I try to modify the parameter of ENA_IBI_MR_HJ to 5'b01000, ENA_TIMEC to 6'd0(due to we do not have design of time control).

My test flow is set 1'b1 to address of 0x4 for bit[0] SLVENA, then trigger my master VIP write data to slave by I2C protocol with static address.

Next, I try to set 2'b11 to address of 0xc for bit[1:0] EVENT after my master VIP write data finish and pull stop.

But I found the SDR_hold will pull 1'b1 when I set 2'b11 to address of 0xc for bit[1:0] EVENT, and I can't no see slave design try to issue start.

In my point, I think slave determines that the Bus is idle it may request a start by pulling SDA low after I set 2'b11 to address of 0xc for bit[1:0] EVENT and then issue address of 7'h02 to request a DAA process. In the end turn to master VIP to choose ack/nack the slave request?

Can you please tell me what's wrong with my setting flow? Does anything I misunderstanding? or the free version does not support HJ? Attachment as my waveform shown that time 17164ns issue STOP and Time 22760ns set 2'b11 to address of 0xc for bit[1:0] EVENT, and then SDR_hold pull up, and then never seen slave design try to issue stop...

Thank you very much. many thanks.

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pkimelman-nxp commented 3 years ago

Just start the Hot-Join before you slave-enable. You cannot Hot-join after as it thinks it is already on the bus.