Reference code for cycling data logger

3 files changed, 246 insertions, 3 deletions

diff --git a/bikelogger/bikelogger.ino b/bikelogger/bikelogger.ino
index db92865..b864cda 100644
--- a/bikelogger/bikelogger.ino
+++ b/bikelogger/bikelogger.ino
@@ -1,5 +1,7 @@
 /*************************************************************************
-* A prototype for cycling data logger (based on GPS and MEMS)
+* Reference code for cycling data logger (based on GPS and MEMS)
+* Works with Freematics OBD-II Telematics Advanced Kit 
+* Visit http://freematics.com for more information
 * Distributed under GPL v2.0
 * Written by Stanley Huang
 *************************************************************************/
@@ -84,7 +86,7 @@ void processGPS()
 
     uint32_t date;
     gps.get_datetime(&date, &time, 0);
-    logger.logData(PID_GPS_TIME, time, date);
+    logger.logData(PID_GPS_TIME, (int32_t)time);
 
     speed = (int)(gps.speed() * 1852 / 100);
     if (speed < 1000) speed = 0;
@@ -103,7 +105,8 @@ void processGPS()
     gps.get_position(&lat, &lon, 0);
     curLat = (float)lat / 100000;
     curLon = (float)lon / 100000;
-    logger.logData(PID_GPS_COORDINATES, curLat, curLon);
+    logger.logData(PID_GPS_LATITUDE, lat);
+    logger.logData(PID_GPS_LONGITUDE, lon);
 
     if (logger.dataTime - lastTime >= 3000 && speed > 0) {
         if (lastLat == 0) lastLat = lat;
diff --git a/bikelogger/config.h b/bikelogger/config.h
new file mode 100644
index 0000000..ee7abba
--- /dev/null
+++ b/bikelogger/config.h
@@ -0,0 +1,39 @@
+#ifndef CONFIG_H_INCLUDED
+#define CONFIG_H_INCLUDED
+
+/**************************************
+* Data logging/streaming out
+**************************************/
+#define ENABLE_DATA_OUT 1
+#define ENABLE_DATA_LOG 1
+#define USE_SOFTSERIAL 0
+//this defines the format of log file
+#define LOG_FORMAT FORMAT_CSV
+#define STREAM_FORMAT FORMAT_CSV
+#define STREAM_BAUDRATE 115200
+
+/**************************************
+* Choose SD pin here
+**************************************/
+#define SD_CS_PIN SS // generic
+//#define SD_CS_PIN 4 // ethernet shield
+//#define SD_CS_PIN 7 // microduino
+//#define SD_CS_PIN 10 // SD breakout
+
+/**************************************
+* Choose LCD model here
+**************************************/
+LCD_SSD1289 lcd;
+//LCD_ILI9341 lcd;
+//LCD_Null lcd;
+
+/**************************************
+* Other options
+**************************************/
+#define USE_MPU6050 0
+#define GPS_BAUDRATE 38400
+#define GPS_DATA_TIMEOUT 2000 /* ms */
+//#define DEBUG Serial
+#define DEBUG_BAUDRATE 9600
+
+#endif // CONFIG_H_INCLUDED
diff --git a/bikelogger/datalogger.h b/bikelogger/datalogger.h
new file mode 100644
index 0000000..2a58bf3
--- /dev/null
+++ b/bikelogger/datalogger.h
@@ -0,0 +1,201 @@
+/*************************************************************************
+* 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
+};