Freematics Forum

I have now implemented this where incoming NMEA sentence characters are stored in char array and then written to SD card. It works fine for a few minutes but then goes off and I seem to get partial NMEA sentences in my file like this, 95,$GPVTG,326.52,T,,M,1.75,N,3.25,K,N*35 110,104,29 47,20,-484,-1...

This does not appear to work for me. This is what my settings look like, In config.h I have, ... // minimum loop time #define MIN_LOOP_TIME 250 /* ms */ ... #define USE_GPS 1 #define LOG_GPS_NMEA_DATA 1 #define LOG_GPS_PARSED_DATA 0 In initGPS function, I have uncommented this, write("ATSGC &qu...

Okay I have given it a go now but have run into new problems. With the above mentioned fix applied, I only receive NMEA messages when the vehicle is switched off and no PID data is being received from the protocol processor. As soon as the vehicle is switched on, PID data keeps streaming but I don't...

Yes stopping is relatively easy. But is there is a way to know that the vehicle has started up again in this case?

I have been experimenting with the data logger for the last few days. It seems that the logger continues to log PID data when the vehicle is switched off and I end up with a huge file. It might be vehicle dependent but it seems that even with ignition off the ECU in my vehicle keeps responding to re...

Thanks I will try it.

I am using latest v3 of datalogger from Github and having problems with NMEA messages. I have enabled NMEA logging with the following in config.h // enable(1)/disable(0) GPS module #define USE_GPS 1 #define LOG_GPS_NMEA_DATA 1 #define LOG_GPS_PARSED_DATA 0 However, in the log file, I see partial NME...

Hello, I have just been looking through the v3 datalogger sketch from github and was wondering why is the data from accelerometer, gyro and magnetometer right shifted before writing to the SD card like this, logData(PID_ACC, ax >> 4, ay >> 4, az >> 4) A related question, how is the MPU axes (x, y, z...

Thanks! That does the trick.

The GPS track seems to be messed up, looking at the other thread, it seems there is a bug in the parsing code. Did you have any success with TinyGPS parsing NMEA or the fix for parsing?

Okay I have just emailed it to you.