MCI

Description

MultiMedia Card Interface. MCI supports SD, MMC and SDIO cards. This crate implements the SDIO, MMC and SD protocols. Done in no-std so aimed towards embedded use.

Where to start

Example for ATSAMD51:

pub fn mci() {
    use mci::mci_card::MciCard;
    use mci_atsamd51::AtsamdMci;

    let mut device: hal::pac::Peripherals = c.device;

    let mci = AtsamdMci::new(device.SDHC0);
    let mut pins = hal::Pins::new(device.PORT);
    // Write protect pin
    let mut wp = pins.wp.into_pull_up_input(&mut pins.port);
    // Card detect pin
    let mut detect = pins.detect.into_pull_up_input(&mut pins.port);
    let card = MciCard::new(
        mci,
        wp, true,       // Write protect pin must be pulled high in order to be protected
        detect, true,   // Detect pin must be pulled high in order to signal a card to be detected
        0               // Slot 0. ATSAMD51 can only support 1 slot in anyway
    );
}

For ATSAMD51 remember to compile with target thumbv7em-none-eabihf

Folder structure

mci/

The crate that provides and implements the SD/MMC/SDIO protocols

Folder	Description
command_arguments	Create arguments for a command to be sent to the card
command_arguments/mmc	MMC specific command arguments
command_arguments/sd	SD specific command arguments
command_arguments/sdio / SDIO specific command arguments
functions	Functions implemented on the MciCard struct according to card type
registers	Describing the return values of commands and/or registers
registers/sd	SD specific registers
registers/sdio	SDIO specific registers
sd	SD specific enums

mci-atsamd51

Crate for the implementation of MCI interface for ATSAMD51 devices

Documentation and specifications

https://www.sdcard.org/