diff options
| -rw-r--r-- | test/motion_sense_fifo.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/test/motion_sense_fifo.c b/test/motion_sense_fifo.c index b20eb9a36f..bdac86d942 100644 --- a/test/motion_sense_fifo.c +++ b/test/motion_sense_fifo.c @@ -269,6 +269,58 @@ static int test_spread_data_in_window(void) return EC_SUCCESS; } +static int test_spread_data_on_overflow(void) +{ + const uint32_t now = __hw_clock_source_read(); + const int fill_count = (CONFIG_ACCEL_FIFO_SIZE / 2) - 1; + int i, read_count; + + /* Set up the sensors */ + motion_sensors[0].collection_rate = 20; /* us */ + motion_sensors[0].oversampling_ratio = 1; + motion_sensors[1].oversampling_ratio = 1; + + /* Add 1 sample for sensor [1]. This will be evicted. */ + data->sensor_num = 1; + motion_sense_fifo_stage_data(data, motion_sensors + 1, 3, 0); + + /* + * Fill the rest of the fifo, every 2 entries will have the same + * timestamp simulating have 2 entries on the hardware FIFO per read. + */ + data->sensor_num = 0; + for (i = 0; i < fill_count; i++) { + int ts = now - ((fill_count - i) / 2) * 10; + + motion_sense_fifo_stage_data(data, motion_sensors, 3, ts); + } + + /* Insert an async event which also causes a commit */ + motion_sense_fifo_insert_async_event(motion_sensors, ASYNC_EVENT_FLUSH); + + read_count = + motion_sense_fifo_read(sizeof(data), 4, data, &data_bytes_read); + + /* Verify that we read 4 entries */ + TEST_EQ(read_count, 4, "%d"); + + /* Verify that entries 0 and 2 are timestamps (1 and 3 are data) */ + TEST_BITS_SET(data[0].flags, MOTIONSENSE_SENSOR_FLAG_TIMESTAMP); + TEST_BITS_SET(data[2].flags, MOTIONSENSE_SENSOR_FLAG_TIMESTAMP); + + /* + * Verify that the first read entry is the first one added in the for + * loop above. + */ + TEST_EQ(data[0].sensor_num, 0, "%u"); + TEST_EQ(data[0].timestamp, now - ((fill_count - 1) / 2) * 10, "%u"); + + /* Verify that the timestamp was spread */ + TEST_NE(data[0].timestamp, data[2].timestamp, "%u"); + + return EC_SUCCESS; +} + static int test_spread_data_by_collection_rate(void) { const uint32_t now = __hw_clock_source_read(); @@ -374,6 +426,7 @@ void run_test(int argc, char **argv) RUN_TEST(test_add_data_no_spreading_when_different_sensors); RUN_TEST(test_add_data_no_spreading_different_timestamps); RUN_TEST(test_spread_data_in_window); + RUN_TEST(test_spread_data_on_overflow); RUN_TEST(test_spread_data_by_collection_rate); RUN_TEST(test_spread_double_commit_same_timestamp); RUN_TEST(test_commit_non_data_or_timestamp_entries); |