HomeSpan/docs/Logging.md

Message Logging

LOG1(X) and LOG2(X)

LOG1(const char *fmt, ...) and LOG2(const char *fmt, ...)

Displays user-defined log messages on the Arduino Serial Monitor according to the log level specified with setLogLevel(), or as specified at runtime with the 'L' command via the HomeSpan CLI. LOG1() messages will be output only if the log level is set to 1 or greater. LOG2() messages will be output only if the log level is set to 2.

• In the first form (e.g. LOG1(X)), the macro calls Serial.print(X). The argument X can be any variable recognized by the Arduino Serial.print() function. For example, int val=255; LOG1(val); outputs "255" to the Serial Monitor
• In the second form (e.g. LOG1(const char *fmt, ...)), the macro calls Serial.printf(fmt, ...) enabling you to create printf-style formatted output. For example, int val=255; LOG1("The value is: %X",val); outputs the "The value is: FF" to the Serial Monitor
• See Example 9 - MessageLogging for a tutorial sketch demonstrating these functions

WEBLOG(const char *fmt, ...)

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