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from simtestutil import SimTestCase, SimTestLoader
import pysimulavr
class XPin(pysimulavr.Pin):
def __init__(self, dev, sim, name, state = None):
pysimulavr.Pin.__init__(self)
self.ct = sim.getCurrentTime
self.name = name
if state is not None: self.SetPin(state)
# hold the connecting net here, it have not be destroyed, if we leave this method
self.__net = pysimulavr.Net()
self.__net.Add(self)
self.__net.Add(dev.GetPin(name))
class TestCase(SimTestCase):
_state_0 = "L"
_state_1 = "H"
def setPinAndGetValue(self, pin, state, runtime, label):
pin.SetPin(state)
self.sim.doRun(self.sim.getCurrentTime() + runtime)
return self.sim.getWordByName(self.dev, label)
def test_00(self):
"""check input capture"""
self.assertDevice()
self.assertStartTime()
ct = self.dev.GetClockFreq()
rt = 15000
# skip initialisation
self.assertInitDone()
# check input_capture after initialisation
self.assertWordValue("input_capture", 0)
# connect pin, set to state before edge
x = XPin(self.dev, self.sim, "D4", self._state_0)
self.sim.doRun(self.sim.getCurrentTime() + 10000)
# set pin to state after edge
t0 = self.sim.getCurrentTime()
v0 = self.setPinAndGetValue(x, self._state_1, rt, "input_capture")
self.assertTrue(v0 > 0, "value input capture is 0")
# set pin to state before edge
self.setPinAndGetValue(x, self._state_0, rt, "input_capture")
# set pin to state after edge (second edge)
t1 = self.sim.getCurrentTime()
v1 = self.setPinAndGetValue(x, self._state_1, rt, "input_capture")
self.assertTrue(v1 > 0, "value input capture is 0 (2. edge)")
# calculate difference on captured values
self.assertEqual(t1 - t0, (v1 - v0) * ct)
# delete external pin
del x
if __name__ == '__main__':
from unittest import TextTestRunner
tests = SimTestLoader("timer_16_icap_p_atmega128.elf").loadTestsFromTestCase(TestCase)
TextTestRunner(verbosity = 2).run(tests)
# EOF
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