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6e0c4844f8
Renaming: - rename EventManager to EventManagerCommon, - rename PureEventManager and BellEventManager to EventManager
34 lines
976 B
Markdown
34 lines
976 B
Markdown
# Logging engine
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- [Logger](#Logger)
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- [Dumping to a file](#Dumping-to-a-file)
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## Logger
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Logger class is used for sending `log messages` coming from LOG macros:
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- `LOG_PRINTF`
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- `LOG_TRACE`
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- `LOG_DEBUG`
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- `LOG_INFO`
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- `LOG_WARN`
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- `LOG_ERROR`
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- `LOG_FATAL`
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- `LOG_CUSTOM`
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to a proper device (`SEGGER_RTT`, `console output`, `SYSTEMVIEW`)
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and at the same time to put them to a `circular buffer`.
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`Circular buffer` has a limited size which sometimes results in losing some logs.
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In such a case, proper `lost message info` is added to `msg` received from the buffer.
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## Dumping to a file
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Logs from `Circular buffer` are dumped to a file named `MuditaOS.log` every 10 sec by `EventManagerCommon` timer.
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Current max log file size is 50 MB (after reaching this size no more logs are dumped).
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Logs can be accessed using `mount_user_lfs_partition.py` script from `tools` directory.
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Additionally, `test/get_os_log.py` script allows getting a log file from a running phone.
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