Struct capsules::sdcard::SDCardDriver

pub struct SDCardDriver<'a, A: Alarm + 'a> {
    sdcard: &'a SDCard<'a, A>,
    app: MapCell<App>,
    kernel_buf: TakeCell<'static, [u8]>,
}

Application driver for SD Card capsule, layers on top of SD Card capsule This is used if the SDCard is going to be attached directly to userspace syscalls. SDCardDriver can be ignored if another capsule is going to build off of the SDCard instead

Fields

sdcard: &'a SDCard<'a, A>

app: MapCell<App>

kernel_buf: TakeCell<'static, [u8]>

Methods

impl<'a, A: Alarm + 'a> SDCardDriver<'a, A>

Functions for SDCardDriver

pub fn new(
    sdcard: &'a SDCard<'a, A>,
    kernel_buf: &'static mut [u8; 512]
) -> SDCardDriver<'a, A>

Create new SD card userland interface

sdcard - SDCard interface to provide application access to kernel_buf - buffer used to hold SD card blocks, must be at least 512 bytes in length

Trait Implementations

impl<'a, A: Alarm + 'a> SDCardClient for SDCardDriver<'a, A>

Handle callbacks from SDCard

fn card_detection_changed(&self, installed: bool)

fn init_done(&self, block_size: u32, total_size: u64)

fn read_done(&self, data: &'static mut [u8], len: usize)

fn write_done(&self, buffer: &'static mut [u8])

fn error(&self, error: u32)

impl<'a, A: Alarm + 'a> Driver for SDCardDriver<'a, A>

Connections to userspace syscalls

fn allow(
    &self,
    _appid: AppId,
    allow_num: usize,
    slice: AppSlice<Shared, u8>
) -> ReturnCode

allow lets an application give the driver access to a buffer in the application's memory. This returns ENOSUPPORT if not used.

fn subscribe(&self, subscribe_num: usize, callback: Callback) -> ReturnCode

subscribe lets an application pass a callback to the driver to be called later. This returns ENOSUPPORT if not used.

fn command(
    &self,
    command_num: usize,
    data: usize,
    _: usize,
    _: AppId
) -> ReturnCode

command instructs a driver to perform some action synchronously. This returns ENOSUPPORT if not used.