86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
/*
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Copyright 2018 Bert Melis
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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extern "C" {
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#include <freertos/FreeRTOS.h>
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#include <freertos/task.h>
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#include <esp32-hal-gpio.h>
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#include <driver/rmt.h>
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#include <esp_timer.h>
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}
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#include <functional>
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namespace esp32DHTInternals {
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typedef std::function<void(float, float)> OnData_CB;
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typedef std::function<void(uint8_t)> OnError_CB;
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} // end namespace esp32DHTInternals
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class DHT {
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public:
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DHT();
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~DHT();
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void setup(uint8_t pin, rmt_channel_t channel = RMT_CHANNEL_0); // setPin does complete setup of DHT lib
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void onData(esp32DHTInternals::OnData_CB callback);
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void onError(esp32DHTInternals::OnError_CB callback);
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void read();
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const char* getError() const;
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protected:
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uint8_t _status;
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uint8_t _data[5];
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private:
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static void _handleTimer(DHT* instance);
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static void _handleData(DHT* instance);
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void _decode(rmt_item32_t* data, int numItems);
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void _tryCallback();
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virtual float _getTemperature() = 0;
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virtual float _getHumidity() = 0;
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private:
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uint8_t _pin;
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rmt_channel_t _channel;
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esp32DHTInternals::OnData_CB _onData;
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esp32DHTInternals::OnError_CB _onError;
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esp_timer_handle_t _timer;
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TaskHandle_t _task;
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RingbufHandle_t _ringBuf;
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};
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class DHT11 : public DHT {
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private:
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float _getTemperature();
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float _getHumidity();
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};
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class DHT22 : public DHT {
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private:
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float _getTemperature();
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float _getHumidity();
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};
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