52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
/*
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MqttLogger - offer print() interface like Serial but by publishing to a given mqtt topic.
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Uses Serial as a fallback when no mqtt connection is available.
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Claus Denk
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https://androbi.com
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*/
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#ifndef MqttLogger_h
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#define MqttLogger_h
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#include <Arduino.h>
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#include <Print.h>
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#include <PubSubClient.h>
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enum MqttLoggerMode {
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MqttAndSerialFallback = 0,
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SerialOnly = 1,
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MqttOnly = 2,
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MqttAndSerial = 3,
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};
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class MqttLogger : public Print
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{
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private:
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const char* topic;
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uint8_t* buffer;
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uint8_t* bufferEnd;
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uint16_t bufferCnt = 0, bufferSize = 0;
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PubSubClient* client;
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MqttLoggerMode mode;
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void sendBuffer();
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public:
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MqttLogger(MqttLoggerMode mode=MqttLoggerMode::MqttAndSerialFallback);
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MqttLogger(PubSubClient& client, const char* topic, MqttLoggerMode mode=MqttLoggerMode::MqttAndSerialFallback);
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~MqttLogger();
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void setClient(PubSubClient& client);
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void setTopic(const char* topic);
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void setMode(MqttLoggerMode mode);
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void setRetained(boolean retained);
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virtual size_t write(uint8_t);
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using Print::write;
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uint16_t getBufferSize();
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boolean setBufferSize(uint16_t size);
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};
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#endif
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