OpenFPGA/yosys/examples/python-api/pass.py

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#!/usr/bin/python3
from pyosys import libyosys as ys
import matplotlib.pyplot as plt
import numpy as np
class CellStatsPass(ys.Pass):
def __init__(self):
super().__init__("cell_stats", "Shows cell stats as plot")
def py_help(self):
ys.log("This pass uses the matplotlib library to display cell stats\n")
def py_execute(self, args, design):
ys.log_header(design, "Plotting cell stats\n")
cell_stats = {}
for module in design.selected_whole_modules_warn():
for cell in module.selected_cells():
if cell.type.str() in cell_stats:
cell_stats[cell.type.str()] += 1
else:
cell_stats[cell.type.str()] = 1
plt.bar(range(len(cell_stats)), height = list(cell_stats.values()),align='center')
plt.xticks(range(len(cell_stats)), list(cell_stats.keys()))
plt.show()
def py_clear_flags(self):
ys.log("Clear Flags - CellStatsPass\n")
p = CellStatsPass()