Struct esp_idf_sys::sdmmc_host_t

#[repr(C)]
pub struct sdmmc_host_t {

    pub flags: u32,
    pub slot: c_int,
    pub max_freq_khz: c_int,
    pub io_voltage: f32,
    pub init: Option<unsafe extern "C" fn() -> esp_err_t>,
    pub set_bus_width: Option<unsafe extern "C" fn(slot: c_int, width: usize) -> esp_err_t>,
    pub get_bus_width: Option<unsafe extern "C" fn(slot: c_int) -> usize>,
    pub set_bus_ddr_mode: Option<unsafe extern "C" fn(slot: c_int, ddr_enable: bool) -> esp_err_t>,
    pub set_card_clk: Option<unsafe extern "C" fn(slot: c_int, freq_khz: u32) -> esp_err_t>,
    pub set_cclk_always_on: Option<unsafe extern "C" fn(slot: c_int, cclk_always_on: bool) -> esp_err_t>,
    pub do_transaction: Option<unsafe extern "C" fn(slot: c_int, cmdinfo: *mut sdmmc_command_t) -> esp_err_t>,
    pub __bindgen_anon_1: sdmmc_host_t__bindgen_ty_1,
    pub io_int_enable: Option<unsafe extern "C" fn(slot: c_int) -> esp_err_t>,
    pub io_int_wait: Option<unsafe extern "C" fn(slot: c_int, timeout_ticks: TickType_t) -> esp_err_t>,
    pub command_timeout_ms: c_int,
    pub get_real_freq: Option<unsafe extern "C" fn(slot: c_int, real_freq: *mut c_int) -> esp_err_t>,
}

SD/MMC Host description

This structure defines properties of SD/MMC host and functions of SD/MMC host which can be used by upper layers.

Fields

flags: u32

< flags defining host properties

slot: c_int

< slot number, to be passed to host functions

max_freq_khz: c_int

< max frequency supported by the host

io_voltage: f32

< I/O voltage used by the controller (voltage switching is not supported)

init: Option<unsafe extern "C" fn() -> esp_err_t>

< Host function to initialize the driver

set_bus_width: Option<unsafe extern "C" fn(slot: c_int, width: usize) -> esp_err_t>

< host function to set bus width

get_bus_width: Option<unsafe extern "C" fn(slot: c_int) -> usize>

< host function to get bus width

set_bus_ddr_mode: Option<unsafe extern "C" fn(slot: c_int, ddr_enable: bool) -> esp_err_t>

< host function to set DDR mode

set_card_clk: Option<unsafe extern "C" fn(slot: c_int, freq_khz: u32) -> esp_err_t>

< host function to set card clock frequency

set_cclk_always_on: Option<unsafe extern "C" fn(slot: c_int, cclk_always_on: bool) -> esp_err_t>

< host function to set whether the clock is always enabled

do_transaction: Option<unsafe extern "C" fn(slot: c_int, cmdinfo: *mut sdmmc_command_t) -> esp_err_t>

< host function to do a transaction

__bindgen_anon_1: sdmmc_host_t__bindgen_ty_1

io_int_enable: Option<unsafe extern "C" fn(slot: c_int) -> esp_err_t>

< Host function to enable SDIO interrupt line

io_int_wait: Option<unsafe extern "C" fn(slot: c_int, timeout_ticks: TickType_t) -> esp_err_t>

< Host function to wait for SDIO interrupt line to be active

command_timeout_ms: c_int

< timeout, in milliseconds, of a single command. Set to 0 to use the default value.

get_real_freq: Option<unsafe extern "C" fn(slot: c_int, real_freq: *mut c_int) -> esp_err_t>

< Host function to provide real working freq, based on SDMMC controller setup

Trait Implementations

impl Clone for sdmmc_host_t

fn clone(&self) -> sdmmc_host_t

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for sdmmc_host_t

fn default() -> Self

Returns the “default value” for a type.

impl Copy for sdmmc_host_t