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// configurations
#define ENABLE_DATA_OUT 1
#define ENABLE_DATA_LOG 1
typedef enum {
LOG_TYPE_DEFAULT = 0,
LOG_TYPE_0_60,
LOG_TYPE_0_100,
LOG_TYPE_100_200,
LOG_TYPE_400M,
LOG_TYPE_LAPS,
LOG_TYPE_ROUTE,
} LOG_TYPES;
#define FLAG_CAR 0x1
#define FLAG_CYCLING 0x2
#define FLAG_OBD 0x10
#define FLAG_GPS 0x20
#define FLAG_ACC 0x40
typedef struct {
uint32_t time;
uint16_t pid;
uint8_t flags;
uint8_t checksum;
float value;
} LOG_DATA;
typedef struct {
uint32_t time;
uint16_t pid;
uint8_t flags;
uint8_t checksum;
float value[3];
} LOG_DATA_COMM;
typedef struct {
uint32_t time; /* e.g. 1307281259 */
uint16_t pid;
uint8_t message;
uint8_t checksum;
uint16_t fileIndex;
uint16_t fileSize; /* KB */
uint16_t logFlags;
uint8_t logType;
uint8_t data[5];
} LOG_DATA_FILE_INFO;
typedef struct {
uint32_t time;
uint16_t pid;
uint8_t message;
uint8_t checksum;
uint8_t data[12];
} LOG_DATA_COMMAND;
typedef struct {
uint32_t id;
uint32_t dataOffset;
uint8_t ver;
uint8_t logType;
uint16_t flags;
uint32_t dateTime; //4, YYMMDDHHMM, e.g. 1305291359
/*
uint8_t devid[8];
uint8_t vin[24];
uint8_t unused[84];
*/
} HEADER;
#define HEADER_LEN 128 /* bytes */
#define PID_GPS_COORDINATES 0xF00A
#define PID_GPS_ALTITUDE 0xF00C
#define PID_GPS_SPEED 0xF00D
#define PID_GPS_HEADING 0xF00E
#define PID_GPS_SAT_COUNT 0xF00F
#define PID_GPS_TIME 0xF010
#define PID_ACC 0xF020
#define PID_GYRO 0xF021
#define PID_MESSAGE 0xFE00
#define MSG_FILE_LIST_BEGIN 0x1
#define MSG_FILE_LIST_END 0x2
#define MSG_FILE_INFO 0x3
#define MSG_FILE_REQUEST 0x4
#define FILE_NAME_FORMAT "/DAT%05d.LOG"
#if ENABLE_DATA_OUT
#if defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__)
SoftwareSerial mySerial(A8, A9); /* for BLE Shield on MEGA*/
#elif defined(__AVR_ATmega644P__)
SoftwareSerial mySerial(9, 10); /* for Microduino */
#else
SoftwareSerial mySerial(A2, A3); /* for BLE Shield on UNO*/
#endif
#endif
class CDataLogger {
public:
void initSender()
{
#if ENABLE_DATA_OUT
mySerial.begin(9600);
#endif
}
#if ENABLE_DATA_OUT
void sendFileInfo(File& file)
{
if (file.size() < HEADER_LEN) return;
LOG_DATA_FILE_INFO info = {0};
info.fileIndex = atol(file.name() + 3);
if (info.fileIndex == 0) return;
HEADER hdr;
if (file.readBytes((char*)&hdr, sizeof(hdr)) != sizeof(hdr)) return;
info.pid = PID_MESSAGE;
info.message = MSG_FILE_INFO;
info.fileSize = file.size();
info.time = hdr.dateTime;
info.logType = hdr.logType;
info.logFlags = hdr.flags;
info.checksum = getChecksum((char*)&info, sizeof(info));
mySerial.write((uint8_t*)&info, sizeof(info));
}
void sendCommand(byte message, void* data = 0, byte bytes = 0)
{
LOG_DATA_COMMAND msg = {0, PID_MESSAGE, message};
if (data) memcpy(msg.data, data, bytes);
msg.checksum = getChecksum((char*)&msg, sizeof(msg));
mySerial.write((uint8_t*)&msg, sizeof(msg));
}
bool receiveCommand(LOG_DATA_COMMAND& msg)
{
if (!mySerial.available())
return false;
if (mySerial.readBytes((char*)&msg, sizeof(msg)) != sizeof(msg))
return false;
uint8_t checksum = msg.checksum;
msg.checksum = 0;
if (getChecksum((char*)&msg, sizeof(msg)) != msg.checksum) {
return false;
}
return true;
}
#endif
void logData(uint16_t pid, float value)
{
LOG_DATA_COMM ld = {dataTime, pid, 1, 0, value};
ld.checksum = getChecksum((char*)&ld, 12);
#if ENABLE_DATA_OUT
mySerial.write((uint8_t*)&ld, 12);
#endif
#if ENABLE_DATA_LOG
sdfile.write((uint8_t*)&ld, 12);
#endif
dataSize += 12;
}
void logData(uint16_t pid, float value1, float value2)
{
LOG_DATA_COMM ld = {dataTime, pid, 2, 0, {value1, value2}};
ld.checksum = getChecksum((char*)&ld, 16);
#if ENABLE_DATA_OUT
mySerial.write((uint8_t*)&ld, 16);
#endif
#if ENABLE_DATA_LOG
sdfile.write((uint8_t*)&ld, 16);
#endif
dataSize += 16;
}
void logData(uint16_t pid, float value1, float value2, float value3)
{
LOG_DATA_COMM ld = {dataTime, pid, 3, 0, {value1, value2, value3}};
ld.checksum = getChecksum((char*)&ld, 20);
#if ENABLE_DATA_OUT
mySerial.write((uint8_t*)&ld, 20);
#endif
#if ENABLE_DATA_LOG
sdfile.write((uint8_t*)&ld, 20);
#endif
dataSize += 20;
}
#if ENABLE_DATA_LOG
uint16_t openFile(LOG_TYPES logType, uint16_t logFlags = 0, uint32_t dateTime = 0)
{
uint16_t fileIndex;
char filename[24] = "/FRMATICS";
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;
}
HEADER hdr = {'UDUS', HEADER_LEN, 1, logType, logFlags, dateTime};
sdfile.write((uint8_t*)&hdr, sizeof(hdr));
for (byte i = 0; i < HEADER_LEN - sizeof(hdr); i++)
sdfile.write((uint8_t)0);
dataSize = HEADER_LEN;
sdfile.flush();
return fileIndex;
}
void closeFile()
{
sdfile.close();
}
void flushFile()
{
sdfile.flush();
}
#endif
uint32_t dataTime;
uint32_t dataSize;
private:
static 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
File sdfile;
#endif
};
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