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101 lines
3.2 KiB
101 lines
3.2 KiB
// -----------------------------------------------------------------------------
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// Abstract sensor class (other sensor classes extend this class)
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// Copyright (C) 2017-2018 by Xose Pérez <xose dot perez at gmail dot com>
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// -----------------------------------------------------------------------------
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#if SENSOR_SUPPORT
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#pragma once
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#include <Arduino.h>
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#include <ArduinoJson.h>
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#define SENSOR_ERROR_OK 0 // No error
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#define SENSOR_ERROR_OUT_OF_RANGE 1 // Result out of sensor range
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#define SENSOR_ERROR_WARM_UP 2 // Sensor is warming-up
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#define SENSOR_ERROR_TIMEOUT 3 // Response from sensor timed out
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#define SENSOR_ERROR_UNKNOWN_ID 4 // Sensor did not report a known ID
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#define SENSOR_ERROR_CRC 5 // Sensor data corrupted
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#define SENSOR_ERROR_I2C 6 // Wrong or locked I2C address
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#define SENSOR_ERROR_GPIO_USED 7 // The GPIO is already in use
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#define SENSOR_ERROR_CALIBRATION 8 // Calibration error or Not calibrated
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#define SENSOR_ERROR_OTHER 99 // Any other error
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typedef std::function<void(unsigned char, const char *)> TSensorCallback;
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class BaseSensor {
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public:
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// Constructor
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BaseSensor() {}
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// Destructor
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~BaseSensor() {}
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// Initialization method, must be idempotent
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virtual void begin() {}
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// Loop-like method, call it in your main loop
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virtual void tick() {}
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// Pre-read hook (usually to populate registers with up-to-date data)
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virtual void pre() {}
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// Post-read hook (usually to reset things)
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virtual void post() {}
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// Descriptive name of the sensor
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virtual String description() = 0;
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// Address of the sensor (it could be the GPIO or I2C address)
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virtual String address(unsigned char index) = 0;
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// Descriptive name of the slot # index
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virtual String slot(unsigned char index) = 0;
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// Type for slot # index
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virtual unsigned char type(unsigned char index) = 0;
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// Current value for slot # index
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virtual double value(unsigned char index) = 0;
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// Retrieve current instance configuration
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virtual void getConfig(JsonObject& root) {};
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// Save current instance configuration
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virtual void setConfig(JsonObject& root) {};
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// Load the configuration manifest
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static void manifest(JsonArray& root) {};
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// Sensor ID
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unsigned char getID() { return _sensor_id; };
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// Return status (true if no errors)
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bool status() { return 0 == _error; }
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// Return ready status (true for ready)
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bool ready() { return _ready; }
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// Return sensor last internal error
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int error() { return _error; }
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// Number of available slots
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unsigned char count() { return _count; }
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// Hook for event callback
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void onEvent(TSensorCallback fn) { _callback = fn; };
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protected:
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TSensorCallback _callback = NULL;
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unsigned char _sensor_id = 0x00;
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int _error = 0;
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bool _dirty = true;
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unsigned char _count = 0;
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bool _ready = false;
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};
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#endif
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