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RIOT/tests/xtimer_usleep
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Gaëtan Harter 1bc0bbb1a8
tests/xtimer_usleep: disable running test on native 
The test randomly fails for unrelated PRs. Expecting real-time timing on
native is not really possible. Maybe it could be fixed but it currently
triggers many false positive.
2018-12-05 17:32:53 +01:00
..
tests tests: move testrunner import up 2018-08-13 14:11:24 +02:00
main.c tests/xtimer_usleep: Add SLEEP_PIN, Updated README 2018-05-29 16:09:20 +02:00
Makefile tests/xtimer_usleep: disable running test on native 2018-12-05 17:32:53 +01:00
README.md tests/xtimer_usleep: Add SLEEP_PIN, Updated README 2018-05-29 16:09:20 +02:00

README.md

xtimer_usleep test application

This test tests xtimer_usleep() against the timings of xtimer_now_usec() and by comparing the incoming values with the test hosts time.

The sleep times can be probed with a oscilloscope at a pin if SLEEP_PIN is set and the respective gpio SLEEP_PORT is defined in the makefile, the port information can be found in the enum in cpu/include/periph_cpu.h.

FEATURES_REQUIRED += periph_gpio
CFLAGS += -DSLEEP_PIN=7
CFLAGS += -DSLEEP_PORT=PORT_F

Usage

Executed from the project directory

make BOARD=<Board Name> flash test

Expected result running

XXX-XX-XX XX:XX:XX,XXX - INFO # Connect to serial port /dev/ttyACM0
Welcome to pyterm!
Type '/exit' to exit.
XXXX-XX-XX XX:XX:XX,XXX - INFO # main(): This is RIOT! (Version: XXX )
XXXX-XX-XX XX:XX:XX,XXX - INFO # Running test 5 times with 7 distinct sleep times
XXXX-XX-XX XX:XX:XX,XXX - INFO # Please hit any key and then ENTER to continue
a
a
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 10232 us (expected: 10000 us) Offset: 232 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 50232 us (expected: 50000 us) Offset: 232 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 10464 us (expected: 10234 us) Offset: 230 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 57008 us (expected: 56780 us) Offset: 228 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 12352 us (expected: 12122 us) Offset: 230 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 98992 us (expected: 98765 us) Offset: 227 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 75232 us (expected: 75000 us) Offset: 232 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 10232 us (expected: 10000 us) Offset: 232 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 50224 us (expected: 50000 us) Offset: 224 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 10464 us (expected: 10234 us) Offset: 230 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 57008 us (expected: 56780 us) Offset: 228 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 12352 us (expected: 12122 us) Offset: 230 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 98992 us (expected: 98765 us) Offset: 227 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 75232 us (expected: 75000 us) Offset: 232 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 10232 us (expected: 10000 us) Offset: 232 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 50232 us (expected: 50000 us) Offset: 232 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 10456 us (expected: 10234 us) Offset: 222 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 57008 us (expected: 56780 us) Offset: 228 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 12352 us (expected: 12122 us) Offset: 230 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 98992 us (expected: 98765 us) Offset: 227 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 75232 us (expected: 75000 us) Offset: 232 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 10232 us (expected: 10000 us) Offset: 232 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 50232 us (expected: 50000 us) Offset: 232 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 10456 us (expected: 10234 us) Offset: 222 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 57008 us (expected: 56780 us) Offset: 228 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 12352 us (expected: 12122 us) Offset: 230 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 98992 us (expected: 98765 us) Offset: 227 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 75232 us (expected: 75000 us) Offset: 232 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 10232 us (expected: 10000 us) Offset: 232 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 50232 us (expected: 50000 us) Offset: 232 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 10464 us (expected: 10234 us) Offset: 230 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 57008 us (expected: 56780 us) Offset: 228 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 12352 us (expected: 12122 us) Offset: 230 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 98992 us (expected: 98765 us) Offset: 227 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 75224 us (expected: 75000 us) Offset: 224 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Test ran for 2056976 us

On Error with pyterm

XXX-XX-XX XX:XX:XX,XXX - INFO # Connect to serial port /dev/ttyACM0
Welcome to pyterm!
Type '/exit' to exit.
XXXX-XX-XX XX:XX:XX,XXX - INFO # main(): This is RIOT! (XXX)
XXXX-XX-XX XX:XX:XX,XXX - INFO # Running test 5 times with 7 distinct sleep times
XXXX-XX-XX XX:XX:XX,XXX - INFO # Please hit any key and then ENTER to continue
a
a
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 10224 us (expected: 10000 us) Offset: 224 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 50232 us (expected: 50000 us) Offset: 232 us
XXXX-XX-XX XX:XX:XX,XXX - INFO # Slept for 1464 us (expected: 1234 us) Offset: 230 us
Invalid timeout 1464 ,expected 1172 < 1234 < 1295
Host max error  61
error           291