Adrian Mitevski / Mbed 2 deprecated mDot_LoRa_Sensornode

A multifunctional and modular Firmware for Multitech's mDot based on ARM mBed provides a widerange of functionality for several Sensors such as MAX44009, BME280, MPU9250, SI1143 and uBlox. It allows you to quickly build a Sensornode that measures specific data with its sensors and sends it via LoRaWAN.

Dependencies:   mDot_LoRa_Sensornode_Flowmeter_impl mbed-rtos mbed

LoRa-Sensornode Firmware for Multitech mDot

A multifunctional and modular Firmware for Multitech's mDot which provides a widerange of functionality for several Sensors. It allows you to quickly build a Sensornode that measures specific data with its sensors and sends it via LoRaWAN.

/media/uploads/mitea1/logo-lora-600x370.png /media/uploads/mitea1/mt_mdot_family_642px.png

Supported Sensors

Idea

The Firmware has some predefined Application Modes running different Tasks(Measurements). Each mode can be used in a different Scenario. Application_Modes define which sensors are used, how often they aquire data and how often the data has to be sent via LoRa. Lets say you just want to measure the Light then you choose an Application_Mode (or define one) that only runs TaskLight for light measurement. As a standard all measurements are taken every second and sent via LoRa but you can change that interval depending on your usage Scenario

app/Decoder.h

Committer:
mitea1
Date:
2018-11-02
Revision:
10:4051c38bf73f
Parent:
2:641a67ff243f

File content as of revision 10:4051c38bf73f:

/**
 * @file Decoder.h
 *
 * @author Adrian
 * @date 16.05.2016
 */

#ifndef APP_DECODER_H_
#define APP_DECODER_H_

#include <RawSerial.h>

#define HEADER_LENGHT 2
#define ID_LENGHT 2
#define LENGHT_LENGHT 2
#define PAYLOAD_LENGHT 28
#define CRC_LENGHT 2
#define MESSAGE_LENGHT (HEADER_LENGHT+ID_LENGHT+LENGHT_LENGHT+PAYLOAD_LENGHT+CRC_LENGHT)

/**
 * States in which the Decoder can be
 */
enum DecoderState{
	INIT = 0,//!< INIT
	RECEIVE, //!< RECEIVE
	DECODE,  //!< DECODE
};

/**
 * Container that can hold GPS Information
 */
typedef struct POSLHH{
	unsigned long iTOW;
	long lon;
	long lat;
	long height;
	long hMSL;
	unsigned long hAcc;
	unsigned long vAcc;
}POSLHH;

/**
 * @class Decoder
 * @brief This Class is used to decode the byte stream thats sent from the uBlox. At the moment
 * it only decodes the NAV-POLLSH byte stream. For correct usage all other messages of the uBlox
 * needs to be deactivated or at least the NAV-POLLSH needs to be activated
 */
class Decoder {
public:
	Decoder(mbed::RawSerial*);
	virtual ~Decoder();

	/**
	 * @brief Gets the actual State in which the decoder is
	 * @return
	 */
	DecoderState getActualState();

	/**
	 * @brief Gets the receive Buffer in which all received Bytes from the NAV-POLLSH are
	 * stored
	 * @return
	 */
	char* getReceiveBuffer();

	/**
	 * @brief Gets the last successfully decoded NAV-POLLSH Bytestream
	 * @return
	 */
	POSLHH getLastPoslhh();

private:
	DecoderState actualState;
	mbed::RawSerial* serial;
	char lastReceivedChar;
	POSLHH lastPoslhh;
	char receiveBuffer[MESSAGE_LENGHT];
	int bufferPosition;

	/**
	 * @brief Sets the actual State of the Decoder
	 * @param actualState
	 */
	void setActualState(DecoderState actualState);

	/**
	 * @brief Gets the latest character from the serial internal buffer
	 */
	void getCharacterFromSerial();

	/**
	 * @brief Checks if the specific Char was the last received Char
	 * @param specificChar
	 * @return
	 */
	bool hasReceived(char specificChar);

	/**
	 * @brief Buffers the last received Char at the beginning of the buffer
	 */
	void bufferReceivedCharacterAtBegin();

	/**
	 * @brief Buffers the last received char at the actual position of the buffer
	 */
	void bufferReceivedCharacter();

	/**
	 * @brief Checks if the whole buffer is filled up
	 * @return
	 */
	bool isBufferFilled();

	/**
	 * @brief The Decoding routing thats called when some Data is recieved via the serial
	 */
	void rxInterrupt();

	/**
	 * @brief Sets the position where the next Byte should be stored inside the buffer
	 * @param desiredPosition
	 */
	void setBufferPosition(uint8_t desiredPosition);

	/**
	 * @brief Increments the position where the next Byte should be stored by 1
	 */
	void incrementBufferPosition();

	/**
	 * @brief Clears the whole buffer
	 */
	void clearReceiveBuffer();

	/**
	 * @brief Decodes the whole buffer
	 */
	void decodeReceiveBuffer();
};

#endif /* APP_DECODER_H_ */