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esp_timer: test for monotonic values of esp_timer_get_timer in CI

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Reduce test time by increasing overflow rate, make test more robust.
This commit is contained in:
Ivan Grokhotkov 2018-05-23 22:41:54 +08:00
parent 4129436f7e
commit ef3c6ac276
1 changed files with 57 additions and 22 deletions
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79
components/esp32/test/test_esp_timer.c
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@ -404,40 +404,75 @@ TEST_CASE("esp_timer_get_time call takes less than 1us", "[esp_timer]")
TEST_PERFORMANCE_LESS_THAN(ESP_TIMER_GET_TIME_PER_CALL, "%dns", ns_per_call);
}
/* This test runs for about 10 minutes and is disabled in CI.
* Such run time is needed to have FRC2 timer overflow a few times.
*/
TEST_CASE("esp_timer_get_time returns monotonic values", "[esp_timer][ignore]")
TEST_CASE("esp_timer_get_time returns monotonic values", "[esp_timer]")
{
void timer_test_task(void* arg) {
int64_t delta = esp_timer_get_time() - ref_clock_get();
typedef struct {
SemaphoreHandle_t done;
bool pass;
int test_cnt;
int error_cnt;
int64_t total_sq_error;
int64_t max_error;
} test_state_t;
const int iter_count = 1000000000;
for (int i = 0; i < iter_count; ++i) {
int64_t now = esp_timer_get_time();
int64_t ref_now = ref_clock_get();
int64_t diff = now - (ref_now + delta);
void timer_test_task(void* arg) {
test_state_t* state = (test_state_t*) arg;
state->pass = true;
int64_t start_time = ref_clock_get();
int64_t delta = esp_timer_get_time() - start_time;
int64_t now = start_time;
int error_repeat_cnt = 0;
while (now - start_time < 10000000) { /* 10 seconds */
int64_t hs_now = esp_timer_get_time();
now = ref_clock_get();
int64_t diff = hs_now - (now + delta);
/* Allow some difference due to rtos tick interrupting task between
* getting 'now' and 'ref_now'.
*/
TEST_ASSERT_INT32_WITHIN(100, 0, (int) diff);
if (abs(diff) > 100) {
error_repeat_cnt++;
state->error_cnt++;
} else {
error_repeat_cnt = 0;
}
if (error_repeat_cnt > 2) {
printf("diff=%lld\n", diff);
state->pass = false;
}
state->max_error = MAX(state->max_error, abs(diff));
state->test_cnt++;
state->total_sq_error += diff * diff;
}
xSemaphoreGive((SemaphoreHandle_t) arg);
xSemaphoreGive(state->done);
vTaskDelete(NULL);
}
ref_clock_init();
SemaphoreHandle_t done_1 = xSemaphoreCreateBinary();
SemaphoreHandle_t done_2 = xSemaphoreCreateBinary();
setup_overflow();
xTaskCreatePinnedToCore(&timer_test_task, "t1", 4096, (void*) done_1, 6, NULL, 0);
xTaskCreatePinnedToCore(&timer_test_task, "t2", 4096, (void*) done_2, 6, NULL, 1);
test_state_t states[portNUM_PROCESSORS] = {0};
SemaphoreHandle_t done = xSemaphoreCreateCounting(portNUM_PROCESSORS, 0);
for (int i = 0; i < portNUM_PROCESSORS; ++i) {
states[i].done = done;
xTaskCreatePinnedToCore(&timer_test_task, "test", 4096, &states[i], 6, NULL, i);
}
TEST_ASSERT_TRUE( xSemaphoreTake(done_1, portMAX_DELAY) );
TEST_ASSERT_TRUE( xSemaphoreTake(done_2, portMAX_DELAY) );
vSemaphoreDelete(done_1);
vSemaphoreDelete(done_2);
for (int i = 0; i < portNUM_PROCESSORS; ++i) {
TEST_ASSERT_TRUE( xSemaphoreTake(done, portMAX_DELAY) );
printf("CPU%d: %s test_cnt=%d error_cnt=%d std_error=%d |max_error|=%d\n",
i, states[i].pass ? "PASS" : "FAIL",
states[i].test_cnt, states[i].error_cnt,
(int) sqrt(states[i].total_sq_error / states[i].test_cnt), (int) states[i].max_error);
}
vSemaphoreDelete(done);
teardown_overflow();
ref_clock_deinit();
for (int i = 0; i < portNUM_PROCESSORS; ++i) {
TEST_ASSERT(states[i].pass);
}
}
TEST_CASE("Can dump esp_timer stats", "[esp_timer]")