* JK BMS: avoid trailing whitespace in debug output
* JK BMS: publish data points through MQTT
* JK BMS: updateFrom: skip data points with equal value
this changes the interpretation of the timestamp in data containers that
are merely updated from other data containers: this is the oldest
timestamp known where the value was as recorded by the data point in its
respective container.
the data container constructed from an answer will -- naturally -- have
the timetamps of its data points set to the time they were constructed.
* JK BMS: only publish changed values to MQTT broker
all values are still published once every minute if the MQTT retain flag
is NOT set. otherwise, the constant values are only published once on
startup.
this avoids the debug buffer being overrun if verbose logging is
disabled in particular. that would happen because the buffer would
only be reset if verbose logging was enabled but filled in any case.
Due to side effects it is possible that the inverter receives the request but the DTU does not receive the answer. In this case the DTU would resend the request but the inverter would generate a event log entry (DTU command failed) because it received the message twice.
* thread-safety and dynamic memory for MessageOutput
* use dynamic memory to allow handling of arbitrary message lenghts.
* keep a message buffer for every task so no task ever mangles the
message of another task.
* every complete line is written to the serial console and moved to
a line buffer for sending them through the websocket.
* the websocket is always fed complete lines.
* make sure to feed only as many lines as possible to the websocket
handler, so that no lines are dropped.
* lock all MessageOutput state against concurrent access.
* MessageOutput: respect HardwareSerial buffer size
the MessageOutput class buffers whole lines of output printed by any
task in order to avoid mangling of text. that means we hand over full
lines to the HardwareSerial instance, which might be too much in one
call to write(buffer, size). we now check the return value of
write(buffer, size) and call the function again with the part of the
message that could not yet be written by HardwareSerial.
* VE.Direct: reset state machine on timeout
there will never be a large gap between two bytes of the same frame.
if such a large gap is observed, reset the state machine so it tries
to decode a new frame once more data arrives.
this is helpful in case of corrupted data that prevents the state
machine of transitioning to the final state even though the VE.Direct
data producer is done sending bytes that belong to the same frame.
* VE.Direct: print problems to MessageOutput
this includes the web console in particular, where many users have
access to while the serial console is not attached or monitored.
* VE.Direct: collect serial input into buffer and print
should help debug issues for users.
* VE.Direct: implement and use verbose logging switch
* add Icons for Battery and Victron device sensors in Home Assistant
overriding the boring default icon for many sensors
Signed-off-by: Martin Dummer <martin.dummer@gmx.net>
