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# SPDX-License-Identifier: GPL-2.0-or-later
# SPDX-FileCopyrightText: 2022 Bartosz Golaszewski <brgl@bgdev.pl>
import gpiod
import time
from . import gpiosim
from datetime import timedelta
from functools import partial
from gpiod.line import Direction, Edge
from threading import Thread
from unittest import TestCase
EventType = gpiod.EdgeEvent.Type
Pull = gpiosim.Chip.Pull
class EdgeEventWaitTimeout(TestCase):
def test_event_wait_timeout(self):
sim = gpiosim.Chip()
with gpiod.request_lines(
sim.dev_path,
{0: gpiod.LineSettings(edge_detection=Edge.BOTH)},
) as req:
self.assertEqual(req.wait_edge_events(timedelta(microseconds=10000)), False)
def test_event_wait_timeout_float(self):
sim = gpiosim.Chip()
with gpiod.request_lines(
sim.dev_path,
{0: gpiod.LineSettings(edge_detection=Edge.BOTH)},
) as req:
self.assertEqual(req.wait_edge_events(0.01), False)
class EdgeEventInvalidConfig(TestCase):
def test_output_mode_and_edge_detection(self):
sim = gpiosim.Chip()
with self.assertRaises(ValueError):
gpiod.request_lines(
sim.dev_path,
{
0: gpiod.LineSettings(
direction=Direction.OUTPUT, edge_detection=Edge.BOTH
)
},
)
class WaitingForEdgeEvents(TestCase):
def setUp(self):
self.sim = gpiosim.Chip(num_lines=8)
self.thread = None
def tearDown(self):
if self.thread:
self.thread.join()
del self.thread
self.sim = None
def trigger_falling_and_rising_edge(self, offset):
time.sleep(0.05)
self.sim.set_pull(offset, Pull.UP)
time.sleep(0.05)
self.sim.set_pull(offset, Pull.DOWN)
def trigger_rising_edge_events_on_two_offsets(self, offset0, offset1):
time.sleep(0.05)
self.sim.set_pull(offset0, Pull.UP)
time.sleep(0.05)
self.sim.set_pull(offset1, Pull.UP)
def test_both_edge_events(self):
with gpiod.request_lines(
self.sim.dev_path, {2: gpiod.LineSettings(edge_detection=Edge.BOTH)}
) as req:
self.thread = Thread(
target=partial(self.trigger_falling_and_rising_edge, 2)
)
self.thread.start()
self.assertTrue(req.wait_edge_events(timedelta(seconds=1)))
events = req.read_edge_events()
self.assertEqual(len(events), 1)
event = events[0]
self.assertEqual(event.event_type, EventType.RISING_EDGE)
self.assertEqual(event.line_offset, 2)
ts_rising = event.timestamp_ns
self.assertTrue(req.wait_edge_events(timedelta(seconds=1)))
events = req.read_edge_events()
self.assertEqual(len(events), 1)
event = events[0]
self.assertEqual(event.event_type, EventType.FALLING_EDGE)
self.assertEqual(event.line_offset, 2)
ts_falling = event.timestamp_ns
self.assertGreater(ts_falling, ts_rising)
def test_rising_edge_event(self):
with gpiod.request_lines(
self.sim.dev_path, {6: gpiod.LineSettings(edge_detection=Edge.RISING)}
) as req:
self.thread = Thread(
target=partial(self.trigger_falling_and_rising_edge, 6)
)
self.thread.start()
self.assertTrue(req.wait_edge_events(timedelta(seconds=1)))
events = req.read_edge_events()
self.assertEqual(len(events), 1)
event = events[0]
self.assertEqual(event.event_type, EventType.RISING_EDGE)
self.assertEqual(event.line_offset, 6)
self.assertFalse(req.wait_edge_events(timedelta(microseconds=10000)))
def test_rising_edge_event(self):
with gpiod.request_lines(
self.sim.dev_path, {6: gpiod.LineSettings(edge_detection=Edge.FALLING)}
) as req:
self.thread = Thread(
target=partial(self.trigger_falling_and_rising_edge, 6)
)
self.thread.start()
self.assertTrue(req.wait_edge_events(timedelta(seconds=1)))
events = req.read_edge_events()
self.assertEqual(len(events), 1)
event = events[0]
self.assertEqual(event.event_type, EventType.FALLING_EDGE)
self.assertEqual(event.line_offset, 6)
self.assertFalse(req.wait_edge_events(timedelta(microseconds=10000)))
def test_sequence_numbers(self):
with gpiod.request_lines(
self.sim.dev_path, {(2, 4): gpiod.LineSettings(edge_detection=Edge.BOTH)}
) as req:
self.thread = Thread(
target=partial(self.trigger_rising_edge_events_on_two_offsets, 2, 4)
)
self.thread.start()
self.assertTrue(req.wait_edge_events(timedelta(seconds=1)))
events = req.read_edge_events()
self.assertEqual(len(events), 1)
event = events[0]
self.assertEqual(event.event_type, EventType.RISING_EDGE)
self.assertEqual(event.line_offset, 2)
self.assertEqual(event.global_seqno, 1)
self.assertEqual(event.line_seqno, 1)
self.assertTrue(req.wait_edge_events(timedelta(seconds=1)))
events = req.read_edge_events()
self.assertEqual(len(events), 1)
event = events[0]
self.assertEqual(event.event_type, EventType.RISING_EDGE)
self.assertEqual(event.line_offset, 4)
self.assertEqual(event.global_seqno, 2)
self.assertEqual(event.line_seqno, 1)
class ReadingMultipleEdgeEvents(TestCase):
def setUp(self):
self.sim = gpiosim.Chip(num_lines=8)
self.request = gpiod.request_lines(
self.sim.dev_path, {1: gpiod.LineSettings(edge_detection=Edge.BOTH)}
)
self.line_seqno = 1
self.global_seqno = 1
self.sim.set_pull(1, Pull.UP)
time.sleep(0.05)
self.sim.set_pull(1, Pull.DOWN)
time.sleep(0.05)
self.sim.set_pull(1, Pull.UP)
time.sleep(0.05)
def tearDown(self):
self.request.release()
del self.request
del self.sim
def test_read_multiple_events(self):
self.assertTrue(self.request.wait_edge_events(timedelta(seconds=1)))
events = self.request.read_edge_events()
self.assertEqual(len(events), 3)
for event in events:
self.assertEqual(event.line_offset, 1)
self.assertEqual(event.line_seqno, self.line_seqno)
self.assertEqual(event.global_seqno, self.global_seqno)
self.line_seqno += 1
self.global_seqno += 1
class EdgeEventStringRepresentation(TestCase):
def test_edge_event_str(self):
sim = gpiosim.Chip()
with gpiod.request_lines(
path=sim.dev_path, config={0: gpiod.LineSettings(edge_detection=Edge.BOTH)}
) as req:
sim.set_pull(0, Pull.UP)
event = req.read_edge_events()[0]
self.assertRegex(
str(event),
"<EdgeEvent type=Type\\.RISING_EDGE timestamp_ns=[0-9]+ line_offset=0 global_seqno=1 line_seqno=1>",
)
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