KPN IoT / kpn_senml

The KPN SenML library helps you create and parse senml documents in both json and cbor format. The library can be used for sending sensor data and receiving actuator commands.

senml_float_record.cpp

Committer:
kpniot
Date:
2018-05-19
Revision:
0:a9259748d982

File content as of revision 0:a9259748d982:

/*  _  __  ____    _   _ 
 * | |/ / |  _ \  | \ | |
 * | ' /  | |_) | |  \| |
 * | . \  |  __/  | |\  |
 * |_|\_\ |_|     |_| \_|
 * 
 * (c) 2018 KPN
 * License: MIT License.
 * Author: Jan Bogaerts
 * 
 * support for float sensors
 */


#include <senml_float_record.h>
#include <senml_helpers.h>
#include <cbor.h>
#include <senml_double_pack.h> 
#include <senml_int_pack.h> 

SenMLFloatRecord::SenMLFloatRecord(const char* name): SenMLRecordTemplate(name)
{
}

SenMLFloatRecord::SenMLFloatRecord(const char* name, SenMLUnit unit): SenMLRecordTemplate(name, unit)
{
}

float SenMLFloatRecord::getAdjustedValue()
{
    float adjustedValue = this->get();
    if(_streamCtx->baseDataType == CBOR_TYPE_DOUBLE){
        if(this->asSum())
            adjustedValue -= ((SenMLDoublePack*)this->getRoot())->getBaseSum();
        else
            adjustedValue -= ((SenMLDoublePack*)this->getRoot())->getBaseValue();
    }
    else if( _streamCtx->baseDataType == CBOR_TYPE_INT){
        if(this->asSum())
            adjustedValue -= ((SenMLIntPack*)this->getRoot())->getBaseSum();
        else
            adjustedValue -= ((SenMLIntPack*)this->getRoot())->getBaseValue();
    }
    return adjustedValue;
}

void SenMLFloatRecord::fieldsToJson()
{
    SenMLRecord::fieldsToJson();
    if(this->asSum())
        printText(",\"s\":", 5);
    else
        printText(",\"v\":", 5);
    printDouble(this->getAdjustedValue(), SENML_MAX_DOUBLE_PRECISION);
}

int SenMLFloatRecord::fieldsToCbor()
{
    int res = SenMLRecord::fieldsToCbor();
    if(this->asSum())
        res += cbor_serialize_int(SENML_CBOR_S_LABEL);
    else
        res += cbor_serialize_int(SENML_CBOR_V_LABEL);
    res += cbor_serialize_double(this->getAdjustedValue());
    return res;
}