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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-02-12 10:31:38 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-02-14 10:28:29 +0100 |
| commit | 24bf11eca11947d961cc9bb5f7d92dabff169e93 (patch) | |
| tree | b28f3aa8a21df91e8feaf324613aa76460559837 /testsuites/sptests/spcpucounter01/spcpucounter01.scn | |
| parent | bsps/arm: Fix Cortex-A9 MPCore nanoseconds handler (diff) | |
| download | rtems-24bf11eca11947d961cc9bb5f7d92dabff169e93.tar.bz2 | |
score: Add CPU counter support
Add a CPU counter interface to allow access to a free-running counter.
It is useful to measure short time intervals. This can be used for
example to enable profiling of critical low-level functions.
Add two busy wait functions rtems_counter_delay_ticks() and
rtems_counter_delay_nanoseconds() implemented via the CPU counter.
Diffstat (limited to 'testsuites/sptests/spcpucounter01/spcpucounter01.scn')
| -rw-r--r-- | testsuites/sptests/spcpucounter01/spcpucounter01.scn | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/testsuites/sptests/spcpucounter01/spcpucounter01.scn b/testsuites/sptests/spcpucounter01/spcpucounter01.scn new file mode 100644 index 0000000000..fc8e84951e --- /dev/null +++ b/testsuites/sptests/spcpucounter01/spcpucounter01.scn @@ -0,0 +1,15 @@ +*** TEST SPCPUCOUNTER 1 *** +CPU counter frequency: 25000000Hz +nanoseconds for frequency count ticks: 1000000000 +test delay nanoseconds (10 times) +busy wait relative to clock tick: 0.001320 +busy wait relative to clock tick: 0.001640 +busy wait relative to clock tick: 0.001320 +busy wait relative to clock tick: 0.001160 +busy wait relative to clock tick: 0.001280 +busy wait relative to clock tick: 0.001240 +busy wait relative to clock tick: 0.001280 +busy wait relative to clock tick: 0.001280 +busy wait relative to clock tick: 0.001320 +busy wait relative to clock tick: 0.001280 +*** END OF TEST SPCPUCOUNTER 1 *** |