pysimavr/ledrow.py

from pysimavr.proxy import Proxy
from pysimavr.swig.ledrow import ledrow_t, ledrow_core_init
from pysimavr.swig.simavr import get_irq_at


class LedRow(Proxy):
    _reserved = 'getirq pinstate reset_dirty'.split()

    def __init__(self, avr, size=8):
        self.backend = ledrow_t()
        ledrow_core_init(avr.backend, self.backend, size)

    def _getirq(self, index):
        return get_irq_at(self.backend.irq, index)

    def getirq(self, pin):
        return self._getirq(int(pin))

    def pinstate(self, i):
        return bool(self.backend.pinstate & (1 << i))

    def reset_dirty(self, i):
        'read and reset'
        x = bool(self.backend.pinstate_changed & (1 << i))
        self.backend.pinstate_changed &= ~(1 << i)
        return x