Struct PamojaLorawanHeader 

#[repr(C)]
pub struct PamojaLorawanHeader {

    pub payload_len: usize,
    pub dev_addr: u32,
    pub fcnt: u16,
    pub message_type: PamojaLorawanMessageType,
    pub fport: u8,
    pub is_data: u8,
    pub has_fport: u8,
    pub confirmed: u8,
    pub adr: u8,
    pub ack: u8,
    pub fpending: u8,
    pub fopts_len: u8,
    pub adr_ack_req: u8,
    pub class_b: u8,
}

What a frame says about itself before any key is involved.

Every field is a scalar, so this crosses the boundary by value. is_data is 1 when dev_addr and fcnt are meaningful, which is every message type except the two join frames, and has_fport is 1 when fport is.

Nothing here is authenticated, since checking the MIC needs the session key. Treat it as a routing hint until pamoja_lorawan_session_decode has verified the frame.

Fields

payload_len: usize

The length of the still-encrypted payload, in bytes.

dev_addr: u32

The device address, meaningful only when is_data is 1.

fcnt: u16

The low 16 bits of the frame counter, meaningful only when is_data is 1.

message_type: PamojaLorawanMessageType

What kind of message the frame is.

fport: u8

The port the frame was sent on, meaningful only when has_fport is 1.

is_data: u8

1 for a data frame, 0 for one of the two join frames.

has_fport: u8

1 when the frame carries a port rather than only frame options.

confirmed: u8

1 when the frame asks to be acknowledged.

adr: u8

1 when the frame takes part in adaptive data rate.

ack: u8

1 when the frame acknowledges the last confirmed one.

fpending: u8

1 when the network has more downlink data waiting.

fopts_len: u8

How many bytes of frame options the header carries, from 0 to 15.

adr_ack_req: u8

1 when an uplink asks the network to answer. Reserved on a downlink, which reads 0.

class_b: u8

1 when an uplink comes from a device running Class B.

Trait Implementations

impl Clone for PamojaLorawanHeader

fn clone(&self) -> PamojaLorawanHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PamojaLorawanHeader

impl Debug for PamojaLorawanHeader

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

Formats the value using the given formatter.

impl Eq for PamojaLorawanHeader

impl PartialEq for PamojaLorawanHeader

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PamojaLorawanHeader