Daniel Levine / CircularBufferSDCardLib

A set of data recording functions to locally store data in a circular buffer, with functions for offloading to an SD Card when convenient. dataRecorderr.h shows accessible functions to the main program - all direct SD operations are abstracted away by the library. When using this library, #include dataRecorder.h

Dependencies:   sd-driver_compatible_with_MAX32630FTHR

Fork of CircularBufferSDCardLib by Daniel Levine

dataRecorder.cpp

Committer:
DVLevine
Date:
2018-04-04
Revision:
3:df8fb1b5d868
Parent:
2:c2cfb0ebc3bd
Child:
5:0a4ff027086c

File content as of revision 3:df8fb1b5d868:

#include "dataRecorder.h"

/* CONSTRUCTOR*/
DataRecorder::DataRecorder(){

  DataRecorder();
  //Initialize SDCard Reader Class
  m_saveBuddy = new SDCardReader();

  //Initialize data quantity as 0
  m_data_quantity = 0;
}


/* PUBLIC METHODS */

int DataRecorder::getDataQuantity(){
  return m_data_quantity;
}

int DataRecorder::getTimeStampQuantity(){
  return m_time_quantity;
}


uint16_t DataRecorder::popLastDataPoint(){
  m_data_quantity--;
    if (m_data_quantity<0){
    m_data_quantity=0;
  }
    uint16_t poppedData;
    if(!m_buf_data.empty()){
      m_buf_data.pop(poppedData);
      return poppedData;
    }else{
      return (uint16_t)0;
    }
  
}

uint32_t DataRecorder::popLastTimeStamp(){
  m_time_quantity--;
  if (m_time_quantity<0){
    m_time_quantity=0;
  }

  uint32_t poppedData;
  if(!m_buf_timestamp.empty()){
    m_buf_timestamp.pop(poppedData);
    return poppedData;
  }else{
    return (uint16_t)0;
  }
  
}

void DataRecorder::logDistancePoint(uint16_t value){
  m_data_quantity++;
  if (m_data_quantity>BUF_SIZE){
    m_data_quantity=BUF_SIZE;
  }
  m_buf_data.push(value);
}

void DataRecorder::logTimeStamp(uint32_t value){
  m_time_quantity++;
  if (m_time_quantity>BUF_SIZE){
    m_time_quantity=BUF_SIZE;
  }
  m_buf_timestamp.push(value);
}

/** Save logged data to SD card **/
void DataRecorder::saveLoggedData(string filename){
  //iterate over buffer and use the sd card commands
  int numPoints = m_data_quantity; //add check for timestamps
  
  int indexArr[m_data_quantity];
  for (int i = m_data_quantity; i >=0 ; i--){
    indexArr[i] = i;
  }
  
  uint32_t timeArr[m_time_quantity];
  uint16_t* allDataArr[m_data_quantity];

  for (int i = 0; i < numPoints; i++){
    uint16_t dataEntry[1];
    dataEntry[1] = popLastDataPoint(); 
    allDataArr[i] = dataEntry;
  }
  
  m_saveBuddy->fullWriteProcedure(filename,indexArr,timeArr,allDataArr); 
}
//saves buffer to sd card and clears it    
void DataRecorder::saveLoggedDataAndClearBuffer(string filename){
  saveLoggedData(filename);
  // then eraseBuffers();
}