Sequence not started got casting error for p_sequencer and m_sequencer

UVM
, , ,
1

hi Expert,

I take some open source code for my learning purpose and added it into eda. but when i try to run it in eda its give this error “UVM_FATAL i3c_direct_data_seq.sv(2) @ 0 ps: uvm_test_top.env.m_vsequence@@i3c_direct_data_seq [DCLPSQ] uvm_pkg_sv_unit.i3c_direct_data_seq.m_set_p_sequencer uvm_test_top.env.m_vsequence.i3c_direct_data_seq Error casting p_sequencer, please verify that this sequence/sequence item is intended to execute on this type of sequencer”

Not able to identify the actual issue for this. can any one help me this thing. i shared complete code link.
eda link: EDA Playground

test is running: i3c_base_test, sequence is running: i3c_direct_data_seq

2

You are running the sequence ‘i3_direct_data_seq’ which is generating ‘i3_seq_item’ transactions. This sequence needs to run on a sequencer which is typed appropriately, but you are attempting to run on a virtual sequencer, which cannot generate any sequence items.

You should never use p_sequencer. Instead, you should specifically encapsulate any required data elements within your sequence and set them prior to starting the sequence. In this case, you should pass your agent config to the sequence prior to starting instead of attempting to get the config from the sequencer.

3

@cgales,

Thanks for response, i am not getting that things, in that code there is 2 sequencer is there one is vertual and taking instance of it in env, and env also make the proper connection with main sequencer. So not understand your point of view, can you add some portion of code here, i hope you have access of provided eda link.
Thanks

4

A virtual sequencer can only run virtual sequences. A virtual sequence will start regular sub-sequences on the appropriately typed sequencer.

You are attempting to run a regular sequence (i3_direct_data_seq) on a virtual sequencer, which won’t work.

If you want to override your test sequence, you should only override with a sequence that extends base_vseq (such as direct_vseq).

5

I tried to open your EDA code link. But it is not opening.
For your reference, You can take help from this link.

6

Hi @mohitv,

Not sure about this, but can you try with this link : https://www.edaplayground.com/x/Lsyj

let me know its open or not.