136 lines
3.1 KiB
C++
136 lines
3.1 KiB
C++
#include <gtest/gtest.h>
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#include <time.h>
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#include <wiringPi.h>
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#define TRIGGER_PIN 0 // BCM 17
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#define LISTENER_PIN 1 // BCM 18
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#define ANOTHER_LISTENER_PIN 26 // BCM 12
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struct counters {
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uint32_t *primary;
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uint32_t *secondary;
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};
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/**
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* Tests ISR for rising edges.
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* Function wiringPiISR2 is used for the configuraiton.
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*/
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class ISRRising2 : public ::testing::Test {
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public:
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static void SetUpTestSuite() {
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wiringPiSetup();
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pinMode(TRIGGER_PIN, OUTPUT);
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digitalWrite(TRIGGER_PIN, LOW);
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counters_a.primary = &count;
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counters_a.secondary = &count2;
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counters_b.primary = &count;
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counters_b.secondary = &count3;
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wiringPiISR2(LISTENER_PIN, INT_EDGE_RISING, ISRRising2::TriggerCount, 1000,
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&counters_a);
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delay(100);
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}
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static uint32_t count;
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static uint32_t count2;
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static uint32_t count3;
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static counters counters_a;
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static counters counters_b;
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static void TriggerCount(WPIWfiStatus, void *userdata) {
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struct counters *counters = (struct counters *)userdata;
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++*counters->primary;
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++*counters->secondary;
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}
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static void TriggerCountDown(WPIWfiStatus, void *userdata) {
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struct counters *counters = (struct counters *)userdata;
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++*counters->primary;
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--*counters->secondary;
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}
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protected:
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virtual void SetUp() {
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count = 0;
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count2 = 0;
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count3 = 0;
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}
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virtual void TearDown() {
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digitalWrite(TRIGGER_PIN, LOW);
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delay(10);
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}
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};
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uint32_t ISRRising2::count = 0;
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uint32_t ISRRising2::count2 = 0;
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uint32_t ISRRising2::count3 = 0;
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struct counters ISRRising2::counters_a;
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struct counters ISRRising2::counters_b;
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TEST_F(ISRRising2, Fundamental) {
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EXPECT_EQ(count, 0u);
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EXPECT_EQ(count2, 0u);
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digitalWrite(TRIGGER_PIN, HIGH);
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delay(20);
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EXPECT_EQ(count, 1u);
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EXPECT_EQ(count2, 1u);
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digitalWrite(TRIGGER_PIN, LOW);
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delay(20);
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EXPECT_EQ(count, 1u);
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EXPECT_EQ(count2, 1u);
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}
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TEST_F(ISRRising2, ThreeTriggers) {
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digitalWrite(TRIGGER_PIN, HIGH);
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delay(10);
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count = 0;
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for (int i = 0; i < 6; ++i) {
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digitalWrite(TRIGGER_PIN, i % 2);
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delay(20);
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}
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EXPECT_EQ(count, 3u);
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}
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TEST_F(ISRRising2, Debounce) {
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delay(20);
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for (int i = 0; i < 7; ++i) {
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digitalWrite(TRIGGER_PIN, (i + 1) % 2);
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}
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delay(20);
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EXPECT_EQ(count, 1u);
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}
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TEST_F(ISRRising2, ISRInitConflict) {
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// this initialization should fail for ISR conflict
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EXPECT_EQ(wiringPiISR2(LISTENER_PIN, INT_EDGE_FALLING,
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ISRRising2::TriggerCountDown, 0, &counters_b),
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-1);
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// ensure the initialization above has released the mutex lock
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EXPECT_EQ(wiringPiISR2(ANOTHER_LISTENER_PIN, INT_EDGE_BOTH,
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ISRRising2::TriggerCountDown, 0, &counters_b),
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0);
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delay(100);
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// ensure the existing ISR has not broken
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EXPECT_EQ(count, 0u);
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EXPECT_EQ(count2, 0u);
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digitalWrite(TRIGGER_PIN, HIGH);
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delay(20);
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EXPECT_EQ(count, 1u);
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EXPECT_EQ(count2, 1u);
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digitalWrite(TRIGGER_PIN, LOW);
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delay(20);
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EXPECT_EQ(count, 1u);
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EXPECT_EQ(count2, 1u);
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delay(20);
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count = 0;
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for (int i = 0; i < 7; ++i) {
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delay(1);
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digitalWrite(TRIGGER_PIN, (i + 1) % 2);
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}
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delay(20);
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EXPECT_EQ(count, 1u);
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}
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