chipscopy.PCIe¶

class chipscopy.api.pcie.PCIe(*args, **kwds)[source]¶

Returns a text string of the PCIe LTSSM in the DOT format. DOT is a graph description language: (https://en.wikipedia.org/wiki/DOT_(graph_description_language)) This format can be graphed using python (networkx) or other graphing tools (graphviz and others)

Parameters:: None –
Returns:: String with the PCIe LTSSM graph in a DOT format, using the same colors and labels as get_plt()

get_plt()[source]¶

Returns a matplotlib figure to plot, showing the PCIe LTSSM graph. States will be colored green if they have been visited, orange if it’s the last state visited, and grey if not visited. The edge labels represent the number of times that state transition has be traversed.

Parameters:: None –
Returns:: A matplotlib.pyplot that can be titled and shown later (can use plt.title or plt.show()

print_trace()[source]¶

Prints PCIe trace to console, parsing the hierarchy of loops and substates to create a user-friendly output

Parameters:: None –
Returns:: None

read_data()[source]¶

Reads the PCIe debug memory again, and updated internal properties, same as refresh()

Parameters:: None –
Returns:: None

refresh()[source]¶

Reads the PCIe debug memory again, and updated internal properties.

Parameters:: None –
Returns:: None

reset_core()[source]¶

Resets the PCIe debug core, telling the IP to start collecting a new state trace

Parameters:: None –
Returns:: None