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58 lines
1.6 KiB
Python
58 lines
1.6 KiB
Python
from myhdl import *
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def TimeCount(tens, ones, tenths, startstop, reset, clock):
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""" 3 digit time counter in seconds and tenths of a second.
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tens: most significant digit of the seconds
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ones: least significant digit of the seconds
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tenths: tenths of a second
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startstop: input that starts or stops the counter on posedge
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reset: reset input
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clock: 10kHz clock input
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"""
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@instance
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def logic():
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seen = False
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counting = False
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while True:
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yield clock.posedge, reset.posedge
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if reset:
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tens.next = 0
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ones.next = 0
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tenths.next = 0
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seen = False
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counting = False
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else:
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if startstop and not seen:
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seen = True
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counting = not counting
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elif not startstop:
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seen = False
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if counting:
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if tenths == 9:
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tenths.next = 0
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if ones == 9:
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ones.next = 0
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if tens == 5:
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tens.next = 0
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else:
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tens.next = tens + 1
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else:
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ones.next = ones + 1
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else:
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tenths.next = tenths + 1
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return logic
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