Polyphony によるチャタリング除去プログラム

fix_bounce.py

from polyphony import testbench, module, is_worker_running
from polyphony.timing import clksleep, wait_rising, wait_value
from polyphony.io import Port, Queue
from polyphony.typing import bit, bit32

@module
class fix_bounce_contact:
    def __init__(self, wait_n, long_press_count_n):
        self.wait_n = wait_n
        self.long_press_count_n = long_press_count_n

        self.button_in = Port(bit, 'in')

        self.button_out = Port(bit, 'out', 0)
        self.long_press_button_out = Port(bit, 'out', 0)
        self.append_worker(self.main)

    #----------------------------------------------------------------
    #----------------------------------------------------------------

    def loop_wait(self):
        for i in range(self.wait_n):
            pass

    #----------------------------------------------------------------
    def main(self):
        while is_worker_running():
            count:bit32 = 0
            v0:bit = 0
            v1:bit = 0
            while True:
                max_count:bit32 = self.long_press_count_n
                count = 0
                while True:
                    self.loop_wait()
                    v0 = v1
                    v1 = self.button_in.rd()
                    count += 1
                    if v0 != v1:
                        break

                    if (v1 == 1) and ( count > max_count ):
                        self.long_press_button_out.wr(1)
                        
                self.long_press_button_out.wr(0)
                self.button_out.wr(v1)
        
#----------------------------------------------------------------
@testbench
def test(m):
    for i in range(10):
        m.button_in.wr(1)
        wait_value(1, m.button_out)
        print("0button", m.button_out.rd(), m.long_press_button_out.rd())

        m.button_in.wr(0)
        wait_value(0, m.button_out)
        print("1button", m.button_out.rd(), m.long_press_button_out.rd())

    for i in range(10):
        m.button_in.wr(1)
        wait_value(1, m.button_out)
        print("2button", m.button_out.rd(), m.long_press_button_out.rd())

        wait_value(1, m.long_press_button_out)
        print("3button", m.button_out.rd(), m.long_press_button_out.rd())

        m.button_in.wr(0)
        wait_value(0, m.button_out)
        print("4button", m.button_out.rd(), m.long_press_button_out.rd())

m = fix_bounce_contact(100, 10)
test(m)