Introduction
serdisplib uses syslog for reporting debugging information, errors and warnings.
Thus, /var/log/messages (or /var/adm/messages depending on operating system used) may contain useful informations.
- Attention
- Always have a look into
/var/log/messages (or /var/adm/messages ) if there are problems.
Warnings and errors (depending on the debugging level used) are logged there by serdisplib!
| #define sd_getdebuglevel |
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Gets the current debug level
- Returns
- debug level currently used
| #define sd_geterrormsg |
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Gets error message of last unsuccessful action
- Returns
- error message
| #define sd_runtime_error |
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Tests if a runtime error has occured (and thus display drawing has been stopped by the library)
- Return values
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| 0 | no runtime error |
| 1 | a runtime error occured |
- Attention
- Display drawing is stopped after a runtime error and may be reset using serdisp_reset() or serdisp_fullreset().
| #define sd_setdebuglevel |
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_level | ) |
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Sets a new debug level
- Parameters
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| _level | constant which sets the debug level:
SD_LVL_WARN = 0 .. only write warning informations
SD_LVL_INFO = 1 .. more verbose debugging
SD_LVL_VERBOSE = 2 .. verbose debugging |
Example:
1 sd_setdebuglevel(SD_LVL_VERBOSE);
| #define sd_setlogmedium |
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_medium | ) |
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Sets the log medium for debug messages
- Parameters
-
| _medium | constant which sets the log medium used for debugging information:
SD_LOG_SYSLOG .. syslog
SD_LOG_STDERR .. stderr
SD_LOG_STDOUT .. stdout |
Example:
enables info debugging and writes debugging information to stderr instead of using syslog:
1 sd_setdebuglevel(SD_LVL_INFO);
2 sd_setlogmedium(SD_LOG_STDERR);
