Save Accel data (25hz) to fit file

There are two recording modes, settable on the device - Smart (the default) where the fit is only written when it needs to be, and 1-seconf, where the fit is written every second  If you want to write 25 samples per second, you use an array in fitContrib, but then you'll need to write something that can display that data from a fit file.

Jim Yeh

I modified a copy of the pitch counter example so I could grab the raw accel data I was after. Was very basic. I can post my code if you like but if you look at the example it is pretty self-explanatory.

I had way more issues with tryin to actually visualise the data. The monkeygraph tool does not open the FIT FIle for me. I used FITSDK tools to convert to CSV, but still not great. 

Cheers

Thanks you everyone for replying, I've searched save accel to fit by using the "Search" field, and what I found is at least three years ago. And I was affarid the current SDK may have some changed. Now I check the topics page by page and find people asked this months, really sorry that I ask again. I'll check these topics and consult you guys if there is further question!

Much appricated!

MThurtell jim_m_58

Hi thanks for your offer. I just made it and be able to get the accel data. However if I want to save the gyro data at the same time, APP will throw a "New Field out of memory for FIT data" error.

Have you ever encounter this before? According to the document, it seems to be a message limitation. I'm wondering if I can use another message or sessions.

Sorry Jim Y, not sure on the gyro info mate.

if I want to save Gyro into fit file with 25hz, and there would be 300 bytes(3 directions * 25 * 4 Bytes) which exceed 256 bytes, what can I do to bypass the 256 bytes limit per message?

Nothing you can do,  And note, it's only 32 bytes for a DF.