November 12, 2013
about 7 months ago
I’m not sure about the STM32F4, as long as it has some type of SPI module, you should be fine.
But internal resistors will not be strong enough, here’s a promising webpage I found about SD cards and PIC projects. Even if you’re using a diff mcu (microcontroller) the main takeaways are the same (1) use a library to comm with the SD card and (2) have some resistors on the lines from your mcu to the SD card. This is the link: http://www.studentcompanion.co.za/post/2013/09/29/Interfacing-SD-Card-With-PIC-Microcontroller-MikroC
Yeah you may need some resistors on the SPI lines actually. I would recommend “SD Card Projects Using the PIC Microcontroller” by Dogan Ibrahim. He walks you through a variety of different projects, near the end he has a data logging project. Even if you’re not using a PIC, it may still be worth a look so that you know what to be cognizant of with your circuit.
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