31 lines
1.2 KiB
Markdown
31 lines
1.2 KiB
Markdown
Debugging libmraa {#debugging}
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=================
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This page contains a few debugging tip, when filing an issue please go through
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this list as if you don't it's the first thing we'll have to ask you to do.
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### Version
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Getting the exact version of libmraa you're running is really important to us.
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The best way to get this is to call mraa_get_version() or mraa.getVersion(). If
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mraa returns x.x.x-dirty then your version was not built from a git tree or you
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built out of tree (see our building doc) - or you don't have git installed.
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### Syslog
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mraa logs pretty much everything that goes wrong to syslog, these days it'll go
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to the systemd journal usually so check with `sudo journalctl -f` whilst
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running your app or check all libmraa messages with `journalctl -t libmraa`.
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Grab all the messages from the initialisation message right up to your last
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one, using a pastebin is always a good idea, I like dpaste.com. If your system
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does not have systemd likely your log is in /var/log/messages or similar.
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### Common Errors
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* Not running as root
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* Incorrect IO numbers, mraa uses physical connector pin numbering see your
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platform doc for details
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* Unsuported platform
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* Using the wrong pin, check pin capabilities
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