Enum STATTXR

#[repr(u8)]
pub enum STATTXR {
    Disabled = 0,
    Stall = 1,
    Nak = 2,
    Valid = 3,
}

Status bits, for transmission transfers Device mode These bits contain the information about the endpoint status, listed in . These bits can be toggled by the software to initialize their value. When the application software writes 0, the value remains unchanged, while writing 1 makes the bit value to toggle. Hardware sets the STATTX bits to NAK, when a correct transfer has occurred (VTTX=1) corresponding to a IN or SETUP (control only) transaction addressed to this channel/endpoint. It then waits for the software to prepare the next set of data to be transmitted. Double-buffered bulk endpoints implement a special transaction flow control, which controls the status based on buffer availability condition (Refer to endpoints and usage in Device mode). If the endpoint is defined as isochronous, its status can only be ‘VALID’ or ‘DISABLED’. Therefore, the hardware cannot change the status of the channel/endpoint/channel after a successful transaction. If the software sets the STATTX bits to ‘STALL’ or ‘NAK’ for an isochronous channel/endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing 1. Host mode The STATTX bits contain the information about the channel status. Refer to for the full descriptions (‘Host mode’ descriptions). Whereas in Device mode, these bits contain the status that are given out on the following transaction, in Host mode they capture the status last received from the device. If a NAK is received, STATTX contains the value indicating NAK.

Value on reset: 0

Variants

Disabled = 0

0: All transmission requests addressed to this endpoint/channel are ignored.

Stall = 1

1: Device mode: the endpoint is stalled and all transmission requests result in a STALL handshake. Host mode: this indicates that the device has STALLed the channel.

Nak = 2

2: Device mode: the endpoint is NAKed and all transmission requests result in a NAK handshake. Host mode: this indicates that the device has NAKed the transmission request.

Valid = 3

3: This endpoint/channel is enabled for transmission.

Trait Implementations

impl Clone for STATTXR

fn clone(&self) -> STATTXR

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for STATTXR

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl FieldSpec for STATTXR

type Ux = u8

Raw field type (u8, u16, u32, …).

impl Format for STATTXR

fn format(&self, f: Formatter<'_>)

Writes the defmt representation of self to fmt.

impl From<STATTXR> for u8

fn from(variant: STATTXR) -> Self

Converts to this type from the input type.

impl PartialEq for STATTXR

fn eq(&self, other: &STATTXR) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for STATTXR

impl Eq for STATTXR

impl IsEnum for STATTXR

impl StructuralPartialEq for STATTXR