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MIPI Sys-T Logging Sample
Table of Contents
Building and Running
This project outputs a few sample log messages in MIPI Sys-T format.
These Sys-T messages can be interpreted by a utility in
<workspace>/modules/debug/mipi-sys-t/printer/.
Build the Sys-T Message Parser
cd <workspace>/modules/debug/mipi-sys-t/printer/
mkdir build
cd build
cmake ../
make
An newly built executable systprint can be found under
<workspace>/modules/debug/mipi-sys-t/printer/build.
MIPI Sys-T Text Messages
The Sys-T text messages are self contained strings that do not require additional artifacts to process.
To build the sample printing text messages under qemu_x86:
west build -b qemu_x86 samples/subsys/logging/syst -- -DCONFIG_LOG_BACKEND_SHOW_COLOR=n
Run the sample and capture the output in a text file:
west build -t run > /tmp/syst
Since the output is being directed to a text file, there will not be any output printed on the terminal. So exit QEMU by pressing CTRL+A x.
Sample Text Messages Output
The /tmp/syst should contain something like this:
SeaBIOS (version zephyr-v1.0.0-0-g31d4e0e-dirty-20200714_234759-fv-az50-zephyr)
Booting from ROM..SYS-T RAW DATA: 020A000B490000000000000000002A2A2A20426F6F74696E67205A6570687972204F53206275696C64202573202573202A2A2A0A007A65706879722D76332E302E302D323036372D673166623436343433333731650000
SYS-T RAW DATA: 220A000B170001000000000000004572726F72206D657373616765206578616D706C652E00
SYS-T RAW DATA: 320A000B190001000000000000005761726E696E67206D657373616765206578616D706C652E00
SYS-T RAW DATA: 420A000B16000100000000000000496E666F206D657373616765206578616D706C652E00
SYS-T RAW DATA: 720A000B170001000000000000004465627567206D657373616765206578616D706C652E00
SYS-T RAW DATA: 720A000B1E0001000000000000004465627567206D657373616765206578616D706C652C2025640001000000
SYS-T RAW DATA: 720A000B260001000000000000004465627567206D657373616765206578616D706C652C2025642C202564000100000002000000
SYS-T RAW DATA: 720A000B2E0001000000000000004465627567206D657373616765206578616D706C652C2025642C2025642C20256400010000000200000003000000
SYS-T RAW DATA: 720A000B380001000000000000004465627567206D657373616765206578616D706C652C2025642C2025642C2025642C20307825780001000000020000000300000004000000
SYS-T RAW DATA: 720A000B0C000100000000000000636861722025630021000000
SYS-T RAW DATA: 720A000B1D0001000000000000007320737472202573202573007374617469632073747200632073747200
SYS-T RAW DATA: 720A000B1500010000000000000064207374722025730064796E616D69632073747200
SYS-T RAW DATA: 720A000B6B0001000000000000006D69786564207374722025732025732025732025732025732025732025730064796E616D696320737472002D2D2D0064796E616D696320737472002D2D2D00616E6F746865722064796E616D696320737472002D2D2D00616E6F746865722064796E616D69632073747200
SYS-T RAW DATA: 720A000B430001000000000000006D6978656420632F732025632025732025732025732025630021000000737461746963207374720064796E616D69632073747200737461746963207374720021000000
SYS-T RAW DATA: 720A000B220001000000000000004465627567206D657373616765206578616D706C652C20256600EA2E4454FB210940
SYS-T RAW DATA: 220A000B090001000000000000002573006672616D6500
SYS-T RAW DATA: 220A000B47000200000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 320A000B090002000000000000002573006672616D6500
SYS-T RAW DATA: 320A000B47000200000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 420A000B090002000000000000002573006672616D6500
SYS-T RAW DATA: 420A000B47000200000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 720A000B090002000000000000002573006672616D6500
SYS-T RAW DATA: 720A000B47000200000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 020A000B2200020000000000000068656C6C6F207379732D74206F6E20626F6172642025730A0071656D755F78383600
[ 0.020000] <err> syst: Error message example.
[ 0.020000] <wrn> syst: Warning message example.
[ 0.020000] <inf> syst: Info message example.
[ 0.020000] <dbg> syst: Debug message example.
[ 0.020000] <dbg> syst: Debug message example, 1
[ 0.020000] <dbg> syst: Debug message example, 1, 2
[ 0.020000] <dbg> syst: Debug message example, 1, 2, 3
[ 0.020000] <dbg> syst: Debug message example, 1, 2, 3, 0x4
[ 0.020000] <dbg> syst: char !
[ 0.020000] <dbg> syst: s str static str c str
[ 0.020000] <dbg> syst: d str dynamic str
[ 0.020000] <dbg> syst: mixed str dynamic str --- dynamic str --- another dynamic str --- another dynamic str
[ 0.020000] <dbg> syst: mixed c/s ! static str dynamic str static str !
[ 0.030000] <dbg> syst: Debug message example, %f
[ 0.030000] <err> syst: frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
[ 0.030000] <wrn> syst: frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
[ 0.030000] <inf> syst: frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
[ 0.030000] <dbg> syst: frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
hello sys-t on board qemu_x86
SYS-T RAW DATA: 220A000B170003000000000000004572726F72206D657373616765206578616D706C652E00
SYS-T RAW DATA: 320A000B190003000000000000005761726E696E67206D657373616765206578616D706C652E00
SYS-T RAW DATA: 420A000B16000300000000000000496E666F206D657373616765206578616D706C652E00
SYS-T RAW DATA: 720A000B170003000000000000004465627567206D657373616765206578616D706C652E00
SYS-T RAW DATA: 720A000B1E0003000000000000004465627567206D657373616765206578616D706C652C2025640001000000
SYS-T RAW DATA: 720A000B260003000000000000004465627567206D657373616765206578616D706C652C2025642C202564000100000002000000
SYS-T RAW DATA: 720A000B2E0003000000000000004465627567206D657373616765206578616D706C652C2025642C2025642C20256400010000000200000003000000
SYS-T RAW DATA: 720A000B380003000000000000004465627567206D657373616765206578616D706C652C2025642C2025642C2025642C20307825780001000000020000000300000004000000
SYS-T RAW DATA: 720A000B0C000300000000000000636861722025630021000000
SYS-T RAW DATA: 720A000B1D0003000000000000007320737472202573202573007374617469632073747200632073747200
SYS-T RAW DATA: 720A000B1500030000000000000064207374722025730064796E616D69632073747200
SYS-T RAW DATA: 720A000B6B0003000000000000006D69786564207374722025732025732025732025732025732025732025730064796E616D696320737472002D2D2D0064796E616D696320737472002D2D2D00616E6F746865722064796E616D696320737472002D2D2D00616E6F746865722064796E616D69632073747200
SYS-T RAW DATA: 720A000B430004000000000000006D6978656420632F732025632025732025732025732025630021000000737461746963207374720064796E616D69632073747200737461746963207374720021000000
SYS-T RAW DATA: 720A000B220004000000000000004465627567206D657373616765206578616D706C652C20256600EA2E4454FB210940
SYS-T RAW DATA: 220A000B090004000000000000002573006672616D6500
SYS-T RAW DATA: 220A000B47000400000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 320A000B090004000000000000002573006672616D6500
SYS-T RAW DATA: 320A000B47000400000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 420A000B090004000000000000002573006672616D6500
SYS-T RAW DATA: 420A000B47000400000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 720A000B090004000000000000002573006672616D6500
SYS-T RAW DATA: 720A000B47000400000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 020A000B2200040000000000000068656C6C6F207379732D74206F6E20626F6172642025730A0071656D755F78383600
QEMU: Terminated
Parsing Text Messages
Use systprint to parse the output:
<workspace>/modules/debug/mipi-sys-t/printer/build/systprint -p /tmp/syst
And the parsed messages:
Error message example.
Warning message example.
Info message example.
Debug message example.
Debug message example, 1
Debug message example, 1, 2
Debug message example, 1, 2, 3
Debug message example, 1, 2, 3, 0x4
char !
s str static str c str
d str dynamic str
mixed str dynamic str --- dynamic str --- another dynamic str --- another dynamic str
mixed c/s ! static str dynamic str static str !
Debug message example, 3.141593
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
hello sys-t on board qemu_x86
Warning message example.
Info message example.
Debug message example.
Debug message example, 1
Debug message example, 1, 2
Debug message example, 1, 2, 3
Debug message example, 1, 2, 3, 0x4
char !
s str static str c str
d str dynamic str
mixed str dynamic str --- dynamic str --- another dynamic str --- another dynamic str
mixed c/s ! static str dynamic str static str !
Debug message example, 3.141593
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
hello sys-t on board qemu_x86
MIPI Sys-T Catalog Messages
Catalog messages are similar to dictionary logging where the format strings are being referenced by identification hashes, and the string arguments are encoded in the Sys-T message payload. The hashes and the encoded arguments can be combined offline with the collateral file (which contains the mapping between hashes and their corresponding format strings) to form the actual messages.
To build the sample printing catalog messages under qemu_x86:
west build -b qemu_x86 samples/subsys/logging/syst -- -DCONFIG_LOG_BACKEND_SHOW_COLOR=n -DCONFIG_LOG_MIPI_SYST_USE_CATALOG=y
Run the sample and capture the output in a text file:
west build -t run > /tmp/syst
Since the output is being directed to a text file, there will not be any output printed on the terminal. So exit QEMU by pressing CTRL+A x.
Sample Catalog Messages Output
The /tmp/syst should contain something like this:
SeaBIOS (version zephyr-v1.0.0-0-g31d4e0e-dirty-20200714_234759-fv-az50-zephyr)
Booting from ROM..SYS-T RAW DATA: 020A000B490000000000000000002A2A2A20426F6F74696E67205A6570687972204F53206275696C64202573202573202A2A2A0A007A65706879722D76332E302E302D323036372D673166623436343433333731650000
SYS-T RAW DATA: 230A0001040001000000000000004C221100
SYS-T RAW DATA: 330A00010400010000000000000030221100
SYS-T RAW DATA: 430A00010400010000000000000018221100
SYS-T RAW DATA: 730A00010400010000000000000000221100
SYS-T RAW DATA: 730A000108000100000000000000E421110001000000
SYS-T RAW DATA: 730A00010C000100000000000000C42111000100000002000000
SYS-T RAW DATA: 730A000110000100000000000000A0211100010000000200000003000000
SYS-T RAW DATA: 730A0001140001000000000000006021110001000000020000000300000004000000
SYS-T RAW DATA: 730A0001080001000000000000003C21110021000000
SYS-T RAW DATA: 730A000115000100000000000000302111007374617469632073747200632073747200
SYS-T RAW DATA: 730A0001100001000000000000002421110064796E616D69632073747200
SYS-T RAW DATA: 730A0001500001000000000000000421110064796E616D696320737472002D2D2D0064796E616D696320737472002D2D2D00616E6F746865722064796E616D696320737472002D2D2D00616E6F746865722064796E616D69632073747200
SYS-T RAW DATA: 730A00013E000100000000000000E820110021000000737461746963207374720064796E616D696320737472007374617469632073747200210000000103050464796E616D69632073747200
SYS-T RAW DATA: 730A00010C000100000000000000CC201100EA2E4454FB210940
SYS-T RAW DATA: 230A00010A000100000000000000C92011006672616D6500
SYS-T RAW DATA: 220A000B47000100000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 330A00010A000100000000000000C62011006672616D6500
SYS-T RAW DATA: 320A000B47000100000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 430A00010A000200000000000000C32011006672616D6500
SYS-T RAW DATA: 420A000B47000200000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 730A00010A000200000000000000C02011006672616D6500
SYS-T RAW DATA: 720A000B47000200000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 020A000B2200020000000000000068656C6C6F207379732D74206F6E20626F6172642025730A0071656D755F78383600
[ 0.020000] <err> syst: Error message example.
[ 0.020000] <wrn> syst: Warning message example.
[ 0.020000] <inf> syst: Info message example.
[ 0.020000] <dbg> syst: Debug message example.
[ 0.020000] <dbg> syst: Debug message example, 1
[ 0.020000] <dbg> syst: Debug message example, 1, 2
[ 0.020000] <dbg> syst: Debug message example, 1, 2, 3
[ 0.020000] <dbg> syst: Debug message example, 1, 2, 3, 0x4
[ 0.020000] <dbg> syst: char !
[ 0.020000] <dbg> syst: s str static str c str
[ 0.020000] <dbg> syst: d str dynamic str
[ 0.020000] <dbg> syst: mixed str dynamic str --- dynamic str --- another dynamic str --- another dynamic str
[ 0.020000] <dbg> syst: mixed c/s ! static str dynamic str static str !
[ 0.020000] <dbg> syst: Debug message example, %f
[ 0.020000] <err> syst: frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
[ 0.020000] <wrn> syst: frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
[ 0.020000] <inf> syst: frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
[ 0.030000] <dbg> syst: frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
hello sys-t on board qemu_x86
SYS-T RAW DATA: 230A0001040003000000000000004C221100
SYS-T RAW DATA: 330A00010400030000000000000030221100
SYS-T RAW DATA: 430A00010400030000000000000018221100
SYS-T RAW DATA: 730A00010400030000000000000000221100
SYS-T RAW DATA: 730A000108000300000000000000E421110001000000
SYS-T RAW DATA: 730A00010C000300000000000000C42111000100000002000000
SYS-T RAW DATA: 730A000110000300000000000000A0211100010000000200000003000000
SYS-T RAW DATA: 730A0001140003000000000000006021110001000000020000000300000004000000
SYS-T RAW DATA: 730A0001080003000000000000003C21110021000000
SYS-T RAW DATA: 730A000115000300000000000000302111007374617469632073747200632073747200
SYS-T RAW DATA: 730A0001100003000000000000002421110064796E616D69632073747200
SYS-T RAW DATA: 730A0001500003000000000000000421110064796E616D696320737472002D2D2D0064796E616D696320737472002D2D2D00616E6F746865722064796E616D696320737472002D2D2D00616E6F746865722064796E616D69632073747200
SYS-T RAW DATA: 730A00013E000300000000000000E820110021000000737461746963207374720064796E616D696320737472007374617469632073747200210000000103050464796E616D69632073747200
SYS-T RAW DATA: 730A00010C000300000000000000CC201100EA2E4454FB210940
SYS-T RAW DATA: 230A00010A000300000000000000C92011006672616D6500
SYS-T RAW DATA: 220A000B47000300000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 330A00010A000300000000000000C62011006672616D6500
SYS-T RAW DATA: 320A000B47000300000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 430A00010A000400000000000000C32011006672616D6500
SYS-T RAW DATA: 420A000B47000400000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 730A00010A000400000000000000C02011006672616D6500
SYS-T RAW DATA: 720A000B47000400000000000000257300303320643220303420303020303020303820303120303220203033203034203035203036203037203038202020202020207C2E2E2E2E2E2E2E2E202E2E2E2E2E2E202000
SYS-T RAW DATA: 020A000B2200040000000000000068656C6C6F207379732D74206F6E20626F6172642025730A0071656D755F78383600
QEMU: Terminated
Notice the shorter payload of catalog messages compared to text messages.
Parsing Catalog Messages
Use systprint to parse the output:
<workspace>/modules/debug/mipi-sys-t/printer/build/systprint -c <build_dir>/zephyr/mipi_syst_collateral.xml -p /tmp/syst
And the parsed messages:
Error message example.
Warning message example.
Info message example.
Debug message example.
Debug message example, 1
Debug message example, 1, 2
Debug message example, 1, 2, 3
Debug message example, 1, 2, 3, 0x4
char !
s str static str c str
d str dynamic str
mixed str dynamic str --- dynamic str --- another dynamic str --- another dynamic str
mixed c/s ! static str dynamic str static str !
Debug message example, 3.141593
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
hello sys-t on board qemu_x86
Error message example.
Warning message example.
Info message example.
Debug message example.
Debug message example, 1
Debug message example, 1, 2
Debug message example, 1, 2, 3
Debug message example, 1, 2, 3, 0x4
char !
s str static str c str
d str dynamic str
mixed str dynamic str --- dynamic str --- another dynamic str --- another dynamic str
mixed c/s ! static str dynamic str static str !
Debug message example, 3.141593
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
frame
03 d2 04 00 00 08 01 02 03 04 05 06 07 08 |........ ......
hello sys-t on board qemu_x86