* 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>
* DPL MQTT handler: modernize
* there is no need to tokenize and check the topic of a received MQTT
message if we only subscribe to a single topic. all messages will be
for that topic. avoid testing the topic in the callback alltogether.
* use std::string and std::stoi over allocating and deleting a buffer
and copying charactes around.
* use a switch statement to process the actual payload.
* break a long line.
* DPL: fix getMode() return value
getMode() returned a bool. probably its return type was not adjusted
when the third mode was introduced. this lead to mode 2 being cast to
true implicitly, which in turn was used to construct a String, such that
"1" was published as the DPL mode when in fact it was 2.
make the mode an enum class to avoid such problems in the future.
inline getMode() and setMode().
fix indention.
the size allocated for the HTTP request response was too little, while
the size for the buffer of the websocket output was increased already.
add a new member variable and use it in both context, such that
increasing the buffer size to accomodate more space (for the JSON data
in particular) will benefit both contexts in the future.
* DPL: improve verbose logging
* shorten DPL log prefix
* canUseDirectSolarPower() was printed two times
* _batteryDischargeEnabled was printed two times
* convert boolean values to human-readable strings
* add units where possible
* split messages into block "before calculating new limit" and "after
calculating new limit", as the latter cannot rely on _inverter being
available.
* order messages such that variables whose value is derived from other
variables are printed later than their dependencies.
* merge output into blocks (one instance near "Printout some stats")
* remove more redundant info (produced in functions outside loop())
* print target grid consumption
* DPL: inhibit solar passthrough while stop threshold reached
* DPL: implement and use isBelowStopThreshold()
we only want to inhibit solar passthrough if the SoC is *below* the stop
threshold, not if it is equal to the stop threshold. otherwise, when
discharging, we would discharge until the battery reached the stop
threshold, then we would also inhibit solar passthrough, until the
battery is charged to the SoC stop threshold plus one percent.
processing a published valued on a subscribed topic is currently running
in a task that is not the task executing the main loop(). that's because
the espMqttClient(Secure) was constructed without arguments, which
selects the constructor with two arguments priority and core, both of
which have default values. that constructor selects
espMqttClientTypes::UseInternalTask::YES, causing a task to be created
in which context the MQTT client loop is executed.
MQTT subscribers assume they are running in the same context as the main
loop(). most code assumes exactly that. as the scheduler is preemptive
and very little (none at all?) code is interlocked, we have to make sure
to meet the programmer's expectations.
this changeset calls the MQTT client loop in the context of the main
loop() and enforces the use of espMqttClientTypes::UseInternalTask::NO.
* PowerMeter: gracefully handle non-float MQTT values
* PowerMeter: update _lastPowerMeterUpdate conservatively
update the timestampt only if the topic actually matched any
subscription and if the value could be parsed as a float.
* PowerMeter: unsubscribe before subscribing
* PowerMeter: organize subscriptions in a map
this allows for a slightly more elegant code and reduced amount of code
overall.
* PowerMeter: clean up header
* move private methods to private section of class declaration.
* remove unused member variable.
Make the administrative accesspoint timeout configurable. The default
value is 3 minutes, values from 0-99999 are possible, where 0 means
infinite (no timeout).
Signed-off-by: Martin Dummer <martin.dummer@gmx.net>
* DPL: implement verbose logging switch
* MQTT: implement verbose logging switch
* power meter: implement verbose logging switch
* Hoymiles lib: implement verbose logging switch
* cpp linting: "final" makes "virtual" and "override" redundant
... however, using only "final" is not as verbose.
When OpenDTU has a Pylontech CAN Bus Battery connected and enabled, this
patch adds the discovery routine for Home Assistant
Signed-off-by: Martin Dummer <martin.dummer@gmx.net>
if the new calculated power limit is below the minimum power limit
setting, the inverter is shut down. the shutdown() function is called
every time this condition is detected, which is also true if the
inverter is kept shut down for longer. that happens while the battery
is charging in particular (solar passthrough off). there are other
cases.
in such cases we still want to get into the DPL status "stable". to be
able to determine this stable state, we must know if the call to
shutdown did actually initiate a shutdown or if the inverter is already
shut down.
we then can forward this "changed" or "not changed" info up the call
chain, where the loop() will know that the system is actually stable.
* fix another fixable "passtrough" typo
the typo in the config's identifier is not changed to preserve
compatibility while not spending the effort to migrate the setting.
* webapp language: prefer SoC over SOC
* DPL: implement solar passthrough loss factor
in (full) solar passthrough mode, the inverter output power is coupled
to the charge controler output power. the inverter efficiency is already
accounted for. however, the battery might still be slowly discharged for
two reasons: (1) line losses are not accounted for and (2) the inverter
outputs a little bit more than permitted by the power limit.
this is undesirable since the battery is significantly drained if solar
passthrough is active for a longer period of time. also, when using full
solar passthrough and a battery communication interface, the SoC will
slowly degrade to a value below the threshold value for full solar
passthrough. this makes the system switch from charging the battery
(potentially rapidly) to discharging the battery slowly. this switch
might happen in rather fast succession. that's effectively
trickle-charging the battery.
instead, this new factor helps to account for line losses between the
solar charge controller and the inverter, such that the battery is
actually not involved in solar passthrough. the value can be increased
until it is observed that the battery is not discharging when solar
passthrough is active.
In Home Assistant, when Home Assistant MQTT-Auto-Discovery is active,
almost all Sensors of the auto-discovered Victron device in Home
Assistant become "unavailable" after a short time - except those
Sensors with frequent changes like battery voltage or panel voltage.
This patch introduces regular mqtt updates for all VE.Direct sensors
when MQTT-Auto-Discovery is enabled.
Signed-off-by: Martin Dummer <martin.dummer@gmx.net>
* DPL: wait for valid time information
we know that the Hoymiles library refuses to send any message to any
inverter until the system has valid time information. until then we can
do nothing, not even shutdown the inverter.
* DPL: wait for device info to be ready
a calculated power limit will always be limited to the reported
device's max power. that upper limit is only known after the first
DevInfoSimpleCommand succeeded. wait for that information to be
available.
* DPL: fix initial calculcation backoff
if the calculation backoff is initialized to zero, the backoff will be
doubled to zero until a new, different power limit was calculated for
the first time. this lead to the DPL recalculating a power limit
hundreds of times without a backoff after startup.
* VE.Direct: remove polling interval
the polling interval was meant to limit the amount of MQTT updates.
however, that is already controlled by the global MQTT publish interval.
the removed interval was instead used to limit polling of the VE.Direct
UART for incoming data.
the Victron device sends data unsolicited. the VeDirectFrameHandler does
not implement any polling mechanism. no data is ever sent to the Victron
device.
what the removed polling interval did was cause a buffer overrun of the
HardwareSerial class, since the incoming data was not processed in time.
so every five seconds, we read a whole valid VE.Direct frame, plus some
old data, which was not a whole frame, leading to VE.Direct error
messages to pop up.
with the polling interval removed, no framing errors are reported, and
instead we gain new data from the charge controller approximately ever
two seconds -- for free.
* VE.Direct: change texts to correct VE.Direct capital letters
* VE.Direct: improve "UpdatesOnly" switch labels
especially since the publish interval setting is gone, the label makes
it hard to comprehend what the switch does. update the texts to better
explain what the switch is used for.
use the same text on the VE.Direct info view.
* VE.Direct: use StatusBadge on info view
there were custom badges to indicate the VE.Direct settings. replace
those by the common StatusBadge to make then look the same as the other
badged on the info views.
a new status is needed to communicate that no update was sent to the
inverter because its power limit is still valid. in this case,
calculating a new power limit is delayed by an exponentially increasing
backoff. the maximum backoff time is ~1s, which is still plenty fast.
the backoff is actually necessary for another reason: at least
currently, a lot of debug messages are printed to the console. printing
all that information in every DPL loop() is too much.
