Differences

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--- write_to_logs [2019/01/09 10:28] – created akuzmuk
+++ write_to_logs [2021/07/23 14:44] – [ERROR(message)] emozolyak
@@ Line 1: / Line 1: @@
 ===== Writing to communication log =====
 ==== ERROR(message) ====
-The function adds the **message** with the ERROR level to communication log (**Maintenance -> WebHMI Log**). Function returns 1 if any error occurred and 0 on success.
+There are 4 functions for writing to the communication log:
+**INFO, ERROR, DEBUG, TRACE**
+Functions return '1' if any error occurred and '0' on success.
 ==== INFO(message) ====
@@ Line 18: / Line 24: @@
 The function adds the **message** with the TRACE level to communication log (**Maintenance -> WebHMI Log**). Function returns 1 if any error occurred and 0 on success.
+==== Customize log output ====
+You can implement your version of log output function with more complex formatting (e.g. table output or json output), wrapping the basics functions into your Lua code ([[useful_programs#debug_printing |see the example]]).
 ===== Writing to message log =====