6b19b877c6
when performing a test request using the web UI, we need to init() the respective power meter, but we do not want to start the polling task. hence we move initialization of the polling task to the poll() function. it will return if the task is setup already, otherwise setup the task.
45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include "PowerMeterSml.h"
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#include <SoftwareSerial.h>
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class PowerMeterSerialSml : public PowerMeterSml {
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public:
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PowerMeterSerialSml()
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: PowerMeterSml("PowerMeterSerialSml") { }
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~PowerMeterSerialSml();
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bool init() final;
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void loop() final;
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private:
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// we assume that an SML datagram is complete after no additional
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// characters were received for this many milliseconds.
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static uint8_t constexpr _datagramGapMillis = 50;
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static uint32_t constexpr _baud = 9600;
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// size in bytes of the software serial receive buffer. must have the
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// capacity to hold a full SML datagram, as we are processing the datagrams
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// only after all data of one datagram was received.
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static int constexpr _bufCapacity = 1024; // memory usage: 1 byte each
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// amount of bits (RX pin state transitions) the software serial can buffer
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// without decoding bits to bytes and storing those in the receive buffer.
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// this value dictates how ofter we need to call a function of the software
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// serial instance that performs bit decoding (we call available()).
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static int constexpr _isrCapacity = 256; // memory usage: 8 bytes each (timestamp + pointer)
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static void pollingLoopHelper(void* context);
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std::atomic<bool> _taskDone;
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void pollingLoop();
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TaskHandle_t _taskHandle = nullptr;
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bool _stopPolling;
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mutable std::mutex _pollingMutex;
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std::unique_ptr<SoftwareSerial> _upSmlSerial = nullptr;
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};
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