Reading and Writing to an SD Card via SPI on Arduino

Hi, I'm looking for some general guidance on writing data to an SD card through SPI on an Arduino UNO running through Matlab.

This is the SD card breakout I am using: https://www.sparkfun.com/products/13743. There are plenty of examples and helpful functions written to access data on the SD card for programming through the Arduino IDE. So, I can see a path to complete my project that way, BUT, I want to learn more about controlling external devices with Matlab and Simulink.

So. I cannot seem to find SD card specific functions in Matlab like find a file, open a file, and write to that file. Do I need to figure out the low level byte commands to send through SPI to accomplish these and then code that into Matlab, or does something like that already exist? I THINK the answer is no, that if I want to use Matlab, I need to figure out all of the communication commands for the SPI device.

If it helps, I can state a specific task: I want to write "Hello World!" onto an SD card through Arduino SPI using Matlab.

Any suggestions are appreciated.

[fus]

Did you ever figure this one out? I just got into this myself and wanted to comb through the internet for solutions because I don't know how to use sblocks yet. I'm surprised this is probably the only post on it I've seen so far.

[Pathmashantha Senanayaka]

I want to play music file on sd card module connected to arduino using matlab guide.

Please help..

Answer 1

[Vishal Neelagiri]

You might find the following documentation links useful regarding this:

https://www.mathworks.com/help/supportpkg/arduinoio/examples/communicate-with-spi-device-on-arduino-hardware.html

https://www.mathworks.com/help/supportpkg/arduino/ug/spiwriteread.html

https://www.mathworks.com/help/supportpkg/arduinoio/ref/writeread.html

[Russell Senior]

Thanks Vishal! I read those in depth, and they provide good information on HOW to communicate, but not WHAT to communicate for µSD cards.

Answer 2

[Sean Hanrahan]

Could this be of assistance?

https://au.mathworks.com/matlabcentral/fileexchange/51710-data-logger-on-arduino-uno