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https://github.com/zephyrproject-rtos/zephyr
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9d63adf3ea
Renames supported platform configurations to conform to new platform
configuration naming scheme.
Example usage with PLATFORM_CONFIG:
make PLATFORM_CONFIG=basic_cortex_m3
make PLATFORM_CONFIG=basic_atom
make PLATFORM_CONFIG=basic_minuteia
make PLATFORM_CONFIG=galileo
xxx_ti_lm3s6965_defconfig -> xxx_basic_cortex_m3_defconfig
xxx_generic_pc_atom_n28xx_defconfig -> xxx_basic_atom_defconfig
xxx_generic_pc_minuteia_defconfig -> xxx_basic_minuteia_defconfig
xxx_quark_defconfig -> xxx_galileo_defconfig
Change-Id: I696eb8b9ad9a72d7a72efbe1341ce23500335764
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
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|---|---|---|
| .. | ||
| src | ||
| Makefile | ||
| prj_arm.conf | ||
| prj_x86.conf | ||
| prj.mdef | ||
| README.txt | ||
Title: test_tickless
Description:
This test verifies the timing accuracy of the tickless idle feature.
The test first calibrates itself by repeatedly sleeping for 10 ticks with the
tickless idle feature disabled. It then repeats this process with the tickless
idle feature enabled. Lastly, it compares the average measured duration of
each approach and displays the result. The tick timing is correct if the
'diff ticks' with tickless enabled matches the SLEEP_TICKS (10) setting in
the source.
The demonstration utilizes microkernel resource APIs, timers and tickless
idle mode.
--------------------------------------------------------------------------------
Building and Running Project:
This microkernel project outputs to the console. It can be built and executed
on QEMU as follows:
make qemu
--------------------------------------------------------------------------------
Troubleshooting:
Problems caused by out-dated project information can be addressed by
issuing one of the following commands then rebuilding the project:
make clean # discard results of previous builds
# but keep existing configuration info
or
make pristine # discard results of previous builds
# and restore pre-defined configuration info
--------------------------------------------------------------------------------
Sample Output:
Tickless Idle Test
Calibrating TSC...
Calibrated time stamp period = 0x00000000163adc3a
Do the real test with tickless enabled
Going idle for 10 ticks...
start ticks : 343
end ticks : 353
diff ticks : 10
diff time stamp: 0x0000000018a69898
Cal time stamp: 0x00000000163adc3a
variance in time stamp diff: 10 percent
===================================================================
PROJECT EXECUTION SUCCESSFUL