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https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git
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e60e38375c
In order to allow the upcoming GLib and DBus bindings to reuse the test code, let's put all common elements into reusable libtool objects and export the relevant symbols in internal headers. Tested-by: Alexander Sverdlin <alexander.sverdlin@siemens.com> Link: https://lore.kernel.org/r/20240812-dbus-v5-1-ead288509217@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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// SPDX-FileCopyrightText: 2024 Kent Gibson <warthog618@gmail.com>
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#include <glib.h>
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#include <gpiod.h>
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#include <poll.h>
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#include <gpiod-test.h>
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#include <gpiod-test-common.h>
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#include <gpiosim-glib.h>
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#include "helpers.h"
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#define GPIOD_TEST_GROUP "kernel-uapi"
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static gpointer falling_and_rising_edge_events(gpointer data)
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{
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GPIOSimChip *sim = data;
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/*
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* needs to be as long as several system timer ticks or resulting
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* pulse width is unreliable and may get filtered by debounce.
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*/
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g_usleep(50000);
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g_gpiosim_chip_set_pull(sim, 2, G_GPIOSIM_PULL_UP);
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g_usleep(50000);
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g_gpiosim_chip_set_pull(sim, 2, G_GPIOSIM_PULL_DOWN);
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return NULL;
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}
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GPIOD_TEST_CASE(enable_debounce_then_edge_detection)
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{
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static const guint offset = 2;
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g_autoptr(GPIOSimChip) sim = g_gpiosim_chip_new("num-lines", 8, NULL);
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g_autoptr(struct_gpiod_chip) chip = NULL;
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g_autoptr(struct_gpiod_line_settings) settings = NULL;
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g_autoptr(struct_gpiod_line_config) line_cfg = NULL;
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g_autoptr(struct_gpiod_line_request) request = NULL;
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g_autoptr(GThread) thread = NULL;
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g_autoptr(struct_gpiod_edge_event_buffer) buffer = NULL;
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struct gpiod_edge_event *event;
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guint64 ts_rising, ts_falling;
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gint ret;
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chip = gpiod_test_open_chip_or_fail(g_gpiosim_chip_get_dev_path(sim));
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settings = gpiod_test_create_line_settings_or_fail();
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line_cfg = gpiod_test_create_line_config_or_fail();
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buffer = gpiod_test_create_edge_event_buffer_or_fail(64);
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gpiod_line_settings_set_direction(settings, GPIOD_LINE_DIRECTION_INPUT);
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gpiod_line_settings_set_debounce_period_us(settings, 10);
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gpiod_test_line_config_add_line_settings_or_fail(line_cfg, &offset, 1,
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settings);
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request = gpiod_test_chip_request_lines_or_fail(chip, NULL, line_cfg);
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gpiod_line_settings_set_edge_detection(settings, GPIOD_LINE_EDGE_BOTH);
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gpiod_test_line_config_add_line_settings_or_fail(line_cfg, &offset, 1,
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settings);
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gpiod_test_line_request_reconfigure_lines_or_fail(request, line_cfg);
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thread = g_thread_new("request-release",
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falling_and_rising_edge_events, sim);
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g_thread_ref(thread);
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/* First event. */
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ret = gpiod_line_request_wait_edge_events(request, 1000000000);
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g_assert_cmpint(ret, >, 0);
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gpiod_test_join_thread_and_return_if_failed(thread);
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ret = gpiod_line_request_read_edge_events(request, buffer, 1);
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g_assert_cmpint(ret, ==, 1);
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gpiod_test_join_thread_and_return_if_failed(thread);
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g_assert_cmpuint(gpiod_edge_event_buffer_get_num_events(buffer), ==, 1);
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event = gpiod_edge_event_buffer_get_event(buffer, 0);
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g_assert_nonnull(event);
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gpiod_test_join_thread_and_return_if_failed(thread);
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g_assert_cmpint(gpiod_edge_event_get_event_type(event), ==,
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GPIOD_EDGE_EVENT_RISING_EDGE);
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g_assert_cmpuint(gpiod_edge_event_get_line_offset(event), ==, 2);
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ts_rising = gpiod_edge_event_get_timestamp_ns(event);
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/* Second event. */
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ret = gpiod_line_request_wait_edge_events(request, 1000000000);
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g_assert_cmpint(ret, >, 0);
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gpiod_test_join_thread_and_return_if_failed(thread);
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ret = gpiod_line_request_read_edge_events(request, buffer, 1);
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g_assert_cmpint(ret, ==, 1);
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gpiod_test_join_thread_and_return_if_failed(thread);
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g_assert_cmpuint(gpiod_edge_event_buffer_get_num_events(buffer), ==, 1);
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event = gpiod_edge_event_buffer_get_event(buffer, 0);
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g_assert_nonnull(event);
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gpiod_test_join_thread_and_return_if_failed(thread);
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g_assert_cmpint(gpiod_edge_event_get_event_type(event), ==,
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GPIOD_EDGE_EVENT_FALLING_EDGE);
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g_assert_cmpuint(gpiod_edge_event_get_line_offset(event), ==, 2);
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ts_falling = gpiod_edge_event_get_timestamp_ns(event);
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g_thread_join(thread);
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g_assert_cmpuint(ts_falling, >, ts_rising);
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}
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