Serial Data Logging to SD card

[jimini]

This might be a quick and effective solution for your chunks:

Particle Serial Interrupt

I published a library to do that. It’s a thread-based serial port buffer. You can choose the size of the buffer and read from it using the same methods you’d normally use for the hardware serial port. With a 4K buffer I was able to send data to a Photon continuously at 230400 without dropping a single byte.

I'm running this in a couple serial collectors quite effectively and it's been flawlessly operating for awhile now.