I’m working on a project where I am reading in midi file data and then playing it out on stepper motors. Right now, I am just hard coding the arrays I need into a header file and then using those arrays in the program. The three arrays I’m using are MIDI note values (int), note start time (float), and note durations (float). With this setup, I’m able to get around 700 notes worth of data before the mbed runs out of memory. Ideally, I would like to be able to write the arrays to a file on the sd card and then read it back during the program to avoid having to store it on the flash memory. The thing is, the SD card documentation is kinda all over the place. I just wanted to see if someone could help point me in the right direction to get started on this or offer an example to help. I’m not sure how to format the data going to the sd card and then read it back in a usable way.