riot-ci/RIOT
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

tests/periph_spi: add benchmark for acquire / release

Browse Source
This commit is contained in:
Benjamin Valentin 2020-05-20 17:54:40 +02:00
parent 1178c82a98
commit a57bd08a11
1 changed files with 19 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
tests/periph_spi/main.c
View File

@ -486,6 +486,25 @@ int cmd_bench(int argc, char **argv)
sum += (stop - start); sum += (stop - start);
sched_sum += sched_diff_us; sched_sum += sched_diff_us;
/* 15 - release & acquire the bus 1000 times */
sched_start = _sched_ticks();
start = xtimer_now_usec();
for (int i = 0; i < BENCH_REDOS; i++) {
spi_release(spiconf.dev);
if (spi_acquire(spiconf.dev, spiconf.cs, spiconf.mode, spiconf.clk) != SPI_OK) {
puts("ERROR - spi_acquire() failed.");
break;
}
}
stop = xtimer_now_usec();
sched_stop = _sched_ticks();
sched_diff_us = _xtimer_diff_usec(sched_stop, sched_start);
printf("15 - acquire/release %i times:\t\t", BENCH_REDOS);
printf("%"PRIu32"\t%"PRIu32"\n", (stop - start), sched_diff_us);
sum += (stop - start);
sched_sum += sched_diff_us;
xtimer_sleep(1); xtimer_sleep(1);
printf("-- - SUM:\t\t\t\t\t%"PRIu32"\t%"PRIu32"\n", sum, sched_sum); printf("-- - SUM:\t\t\t\t\t%"PRIu32"\t%"PRIu32"\n", sum, sched_sum);