Hi Bob, On Tue, Jan 3, 2023 at 7:55 PM Bob Dunlop <bob.dun...@xyzzy.org.uk> wrote:
> Hi, > > On Mon, Jan 02 at 02:23, Damien Maguire wrote: > ... > > have been struggling to find a good example of using a uSD card with a > > 32F1 using libopencm3. Perhaps someone could point me in the right > > direction? > > Useful sources for information on interfacing and initialising SDcards: > http://elm-chan.org/docs/mmc/mmc_e.html > http://elm-chan.org/docs/mmc/m/sdinit.png > http://www.cl.cam.ac.uk/teaching/1011/P31/lib/diskio.c > None of them reference/use libopencm3 but still useful reading. > > I have code for STM32F401 libopencm3 that will take you from initialising > GPIOs to reading sectors from the card and determining it's size. > A couple of Blackpill cards are what I had spare for a project but no > reason the codes shouldn't be easily ported to STM32F1, that's kinda > the point of libopencm3. Read only operation as that's all I need for > my project, but sector write would be an easy addition. > > Don't have any FAT filesytem code as planning to use a readonly EXT2 > filesystem. Because... > > > I can email you the relevant files if you want. I have my own some > would concider crankey style and it's not ready for public distribution, > but it's well commented in my opinion, compiles and runs. > > I would be interested in your written code related to reading sd card. Please share if it's possible for you. I've had fun with libopencm3/bluepill while making https://github.com/amitesh-singh/FASTUSBasp Thanks, Amitesh > -- > Bob Dunlop > > > _______________________________________________ > libopencm3-devel mailing list > libopencm3-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/libopencm3-devel >
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