RIOT-OS/RIOT
RIOT-OS/RIOT
1
0
Fork 0
mirror of https://github.com/RIOT-OS/RIOT.git synced 2025-01-18 12:52:44 +01:00
Code Releases Activity

tests/ztimer_overhead: add ztimer_sleep overhead

Browse Source
This commit is contained in:
Francisco Molina 2022-02-09 14:28:09 +01:00
parent d758cb93ef
commit a8006a74f8
5 changed files with 64 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
tests/ztimer_overhead/Makefile
View File

@ -1,6 +1,9 @@
DEVELHELP ?= 0
include ../Makefile.tests_common
USEMODULE += ztimer_overhead ztimer_usec
USEMODULE += ztimer_auto_adjust
USEMODULE += ztimer_overhead
USEMODULE += ztimer_usec
include $(RIOTBASE)/Makefile.include

19
tests/ztimer_overhead/README.md
View File

@ -3,5 +3,22 @@
This test application sets up a ztimer_periph at 1MHz, then measures 1024
times how much overhead ztimer adds.
It uses the "ztimer_overhead()" function. See it's documentation for more
It uses the "ztimer_overhead_set()" function. See it's documentation for more
information.
It then sets `adjust_set` parameter and sleeps 1024 times and measure how
much overhead ztimer_sleep adds.
It uses the "ztimer_overhead_sleep()" function. See it's documentation for more
information.
At the end of the test `adjust_set` and `adjust_sleep` values are printed
that can be set for the target `BOARD` in `board.h`.
e.g for dwm1001:
```shell
ZTIMER_USEC adjust params for dwm1001:
CONFIG_ZTIMER_USEC_ADJUST_SET 6
CONFIG_ZTIMER_USEC_ADJUST_SLEEP 21
```

1
tests/ztimer_overhead/app.config.test
View File

@ -3,3 +3,4 @@
CONFIG_MODULE_ZTIMER=y
CONFIG_ZTIMER_USEC=y
CONFIG_MODULE_ZTIMER_OVERHEAD=y
CONFIG_MODULE_ZTIMER_AUTO_ADJUST=y

32
tests/ztimer_overhead/main.c
View File

@ -23,26 +23,25 @@
#include <stdlib.h>
#include <inttypes.h>
#include "board.h"
#include "ztimer.h"
#include "ztimer/overhead.h"
#define BASE 1000
#define SAMPLES 1024
int main(void)
static int32_t _ztimer_usec_overhead(unsigned samples, unsigned base,
int32_t (*overhead_fn)(ztimer_clock_t *clock, uint32_t base))
{
uint32_t total = 0;
int32_t min = INT32_MAX;
int32_t max = INT32_MIN;
/* unset configured adjustment */
/* ZTIMER_USEC->adjust_set = 0; */
printf("ZTIMER_USEC->adjust_set = %" PRIu16 "\n", ZTIMER_USEC->adjust_set);
unsigned n = samples;
unsigned n = SAMPLES;
while (n--) {
int32_t overhead = ztimer_overhead(ZTIMER_USEC, BASE);
int32_t overhead = overhead_fn(ZTIMER_USEC, base);
total += labs(overhead);
if (overhead < min) {
min = overhead;
@ -55,5 +54,26 @@ int main(void)
printf("min=%" PRIi32 " max=%" PRIi32 " avg_diff=%" PRIi32 "\n", min, max,
(total / SAMPLES));
return min;
}
int main(void)
{
/* unset configured adjustment */
printf("ZTIMER_USEC auto_adjust params:\n");
printf(" ZTIMER_USEC->adjust_set = %" PRIu16 "\n", ZTIMER_USEC->adjust_set);
ZTIMER_USEC->adjust_set = 0;
printf(" ZTIMER_USEC->adjust_sleep = %" PRIu16 "\n", ZTIMER_USEC->adjust_sleep);
ZTIMER_USEC->adjust_sleep = 0;
printf("ZTIMER_USEC auto_adjust params cleared\n");
printf("zitmer_overhead_set...\n");
ZTIMER_USEC->adjust_set = _ztimer_usec_overhead(SAMPLES, BASE, ztimer_overhead_set);
printf("zitmer_overhead_sleep...\n");
ZTIMER_USEC->adjust_sleep = _ztimer_usec_overhead(SAMPLES, BASE, ztimer_overhead_sleep);
printf("ZTIMER_USEC adjust params for %s:\n", RIOT_BOARD);
printf(" CONFIG_ZTIMER_USEC_ADJUST_SET %" PRIi16 "\n", ZTIMER_USEC->adjust_set);
printf(" CONFIG_ZTIMER_USEC_ADJUST_SLEEP %" PRIi16 "\n", ZTIMER_USEC->adjust_sleep);
return 0;
}

15
tests/ztimer_overhead/tests/01-run.py
View File

@ -10,8 +10,23 @@ import sys
from testrunner import run
ADJUST_SET_MARGIN = 1
ADJUST_SLEEP_MARGIN = 1
def testfunc(child):
child.expect(r"ZTIMER_USEC->adjust_set = (\d+)\r\n")
auto_adjust_set = int(child.match.group(1))
child.expect(r"ZTIMER_USEC->adjust_sleep = (\d+)\r\n")
auto_adjust_sleep = int(child.match.group(1))
child.expect(r"min=-?\d+ max=-?\d+ avg_diff=\d+\r\n")
child.expect(r"min=-?\d+ max=-?\d+ avg_diff=\d+\r\n")
child.expect(r"CONFIG_ZTIMER_USEC_ADJUST_SET\s+(\d+)\r\n")
adjust_set = int(child.match.group(1))
child.expect(r"CONFIG_ZTIMER_USEC_ADJUST_SLEEP\s+(\d+)\r\n")
adjust_sleep = int(child.match.group(1))
assert auto_adjust_set >= adjust_set - ADJUST_SET_MARGIN
assert auto_adjust_sleep >= adjust_sleep - ADJUST_SLEEP_MARGIN
if __name__ == "__main__":