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/*************************************************************************
* Arduino Data Logger Class
* Distributed under GPL v2.0
* Copyright (c) 2013-2014 Stanley Huang <stanleyhuangyc@gmail.com>
* All rights reserved.
* Visit http://freematics.com for more information
*************************************************************************/
#define FORMAT_BIN 0
#define FORMAT_CSV 1
typedef struct {
uint32_t time;
uint16_t pid;
uint8_t flags;
uint8_t checksum;
float value[3];
} LOG_DATA_COMM;
#define HEADER_LEN 128 /* bytes */
#define PID_GPS_LATITUDE 0xA
#define PID_GPS_LONGITUDE 0xB
#define PID_GPS_ALTITUDE 0xC
#define PID_GPS_SPEED 0xD
#define PID_GPS_HEADING 0xE
#define PID_GPS_SAT_COUNT 0xF
#define PID_GPS_TIME 0x10
#define PID_GPS_DATE 0x11
#define PID_ACC 0x20
#define PID_GYRO 0x21
#define PID_COMPASS 0x22
#define PID_MEMS_TEMP 0x23
#define PID_BATTERY_VOLTAGE 0x24
#define FILE_NAME_FORMAT "/DAT%05d.CSV"
#if ENABLE_DATA_OUT
#if USE_SOFTSERIAL
#if defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__)
SoftwareSerial SerialBLE(A8, A9); /* for BLE Shield on MEGA*/
#else
SoftwareSerial SerialBLE(A2, A3); /* for BLE Shield on UNO/leonardo*/
#endif
#else
#define SerialBLE Serial3
#endif
#endif
#if ENABLE_DATA_LOG
static File sdfile;
#endif
static const char* idstr = "FREEMATICS\r";
class CDataLogger {
public:
void initSender()
{
#if ENABLE_DATA_OUT
SerialBLE.begin(STREAM_BAUDRATE);
SerialBLE.print(idstr);
#endif
#if ENABLE_DATA_LOG
m_lastDataTime = 0;
#endif
}
void logTimeElapsed()
{
#if ENABLE_DATA_LOG
dataSize += sdfile.print(dataTime - m_lastDataTime);
sdfile.write(',');
dataSize++;
m_lastDataTime = dataTime;
#endif
}
void logData(char c)
{
#if ENABLE_DATA_OUT && STREAM_FORMAT == FORMAT_CSV
SerialBLE.write(c);
#endif
#if ENABLE_DATA_LOG
if (c >= ' ') {
sdfile.write(c);
dataSize++;
}
#endif
}
void logData(uint16_t pid, int value)
{
char buf[16];
byte n = sprintf(buf, "%X,%d\r", pid, value);
#if ENABLE_DATA_OUT
#if STREAM_FORMAT == FORMAT_BIN
LOG_DATA_COMM ld = {dataTime, pid, 1, 0, value};
ld.checksum = getChecksum((char*)&ld, 12);
SerialBLE.write((uint8_t*)&ld, 12);
#else
SerialBLE.write((uint8_t*)buf, n);
#endif
#endif
#if ENABLE_DATA_LOG
logTimeElapsed();
dataSize += sdfile.write((uint8_t*)buf, n);
#endif
}
void logData(uint16_t pid, int32_t value)
{
char buf[20];
byte n = sprintf(buf, "%X,%ld\r", pid, value);
#if ENABLE_DATA_OUT
#if STREAM_FORMAT == FORMAT_BIN
LOG_DATA_COMM ld = {dataTime, pid, 1, 0, value};
ld.checksum = getChecksum((char*)&ld, 12);
SerialBLE.write((uint8_t*)&ld, 12);
#else
SerialBLE.write((uint8_t*)buf, n);
#endif
#endif
#if ENABLE_DATA_LOG
logTimeElapsed();
dataSize += sdfile.write((uint8_t*)buf, n);
#endif
}
void logData(uint16_t pid, int value1, int value2, int value3)
{
char buf[24];
byte n = sprintf(buf, "%X,%d,%d,%d\r", pid, value1, value2, value3);
#if ENABLE_DATA_OUT
#if STREAM_FORMAT == FORMAT_BIN
LOG_DATA_COMM ld = {dataTime, pid, 3, 0, {value1, value2, value3}};
ld.checksum = getChecksum((char*)&ld, 20);
SerialBLE.write((uint8_t*)&ld, 20);
#else
SerialBLE.write((uint8_t*)buf, n);
#endif
#endif
#if ENABLE_DATA_LOG
logTimeElapsed();
dataSize += sdfile.write((uint8_t*)buf, n);
#endif
}
#if ENABLE_DATA_LOG
uint16_t openFile(uint16_t logFlags = 0, uint32_t dateTime = 0)
{
uint16_t fileIndex;
char filename[24] = "/FRMATICS";
dataSize = 0;
if (SD.exists(filename)) {
for (fileIndex = 1; fileIndex; fileIndex++) {
sprintf(filename + 9, FILE_NAME_FORMAT, fileIndex);
if (!SD.exists(filename)) {
break;
}
}
if (fileIndex == 0)
return 0;
} else {
SD.mkdir(filename);
fileIndex = 1;
sprintf(filename + 9, FILE_NAME_FORMAT, 1);
}
sdfile = SD.open(filename, FILE_WRITE);
if (!sdfile) {
return 0;
}
return fileIndex;
}
void closeFile()
{
sdfile.close();
}
void flushFile()
{
sdfile.flush();
}
#endif
uint32_t dataTime;
uint32_t dataSize;
private:
byte getChecksum(char* buffer, byte len)
{
uint8_t checksum = 0;
for (byte i = 0; i < len; i++) {
checksum ^= buffer[i];
}
return checksum;
}
#if ENABLE_DATA_LOG
uint32_t m_lastDataTime;
#endif
};
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