69 lines
1.7 KiB
C++
69 lines
1.7 KiB
C++
#include "PayloadFormatter.h"
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PayloadFormatter::PayloadFormatter(uint8_t numOfRow, uint8_t numOfColumn) : _totalPayloads(0), _currentPayload(0), _numOfRow(numOfRow), _numOfColumn(numOfColumn), _payload(NULL), _length(0)
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{
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_length = numOfRow * numOfColumn * 2 + 7 + 1;
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_payload = (uint8_t *) calloc(_length, sizeof(uint8_t));
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}
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PayloadFormatter::~PayloadFormatter()
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{
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free(_payload);
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}
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void PayloadFormatter::startSession(uint8_t totalPayloads)
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{
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_totalPayloads = totalPayloads;
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_currentPayload = 0;
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}
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boolean PayloadFormatter::endSession()
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{
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boolean ret = _currentPayload == _totalPayloads;
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if(ret)_totalPayloads = 0;
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return ret;
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}
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int16_t PayloadFormatter::buildPayload(uint8_t **buffer, DateTime *dateTime, double *tempArray)
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{
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*buffer = _payload;
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if(_currentPayload == _totalPayloads || !_totalPayloads)
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{
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*_payload = '\0';
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return 0;
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}
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_currentPayload++;
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//Octet avec nombre de trames et numero de la trame
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_payload[0] = _totalPayloads;
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_payload[0] &= 0x0F;//Permet de mettre à 0 les overflow
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_payload[0] |= _currentPayload << 4;
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//Octet avec nombre de ligne et nombre de colonne de capteurs
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_payload[1] = _numOfRow;
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_payload[1] &= 0x0F;//Permet de mettre à 0 les overflow
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_payload[1] |= _numOfColumn << 4;
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//5 octets de dates
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_payload[2] = dateTime->year() - 2000;
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_payload[3] = dateTime->month();
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_payload[4] = dateTime->day();
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_payload[5] = dateTime->hour();
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_payload[6] = dateTime->minute();
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//Partie temperature
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for(int i(7),j(0); j < (_numOfRow * _numOfColumn); i+=2, j++)
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{
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//Format Q10.6
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int16_t q10_6 = round(tempArray[j] * pow(2,6));
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_payload[i] = q10_6 >> 8;
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_payload[i+1] = q10_6;
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}
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_payload[_length-1] = '\0';
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return _length - 1;
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}
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