RFC 5424 compatible syslog implementation for OpenThread.
This requires:
- a filesystem of some kind, with stubs for newlib's file I/O functions… we're using SPIFFS with a SPI EEPROM, but there are lots of options.
- a real-time clock with an implementation of gettimeofday… we use a NXP PCF8523 I²C RTC to synchronise a software counter
If sending of a message fails (because buffers are full) and the message severity is high enough,