kmp-ble-dfu/com.atruedev.kmpble.dfu.transport/SmpTransport

SmpTransport

class SmpTransport(peripheral: Peripheral, commandTimeout: Duration) : DfuTransport

SMP (Simple Management Protocol) transport for MCUboot DFU.

SMP uses a single characteristic for both request and response. Responses may be fragmented across multiple BLE notifications when the payload exceeds the MTU. This transport reassembles fragmented responses based on the SMP header length field before returning to the caller.

Constructors

constructor(peripheral: Peripheral, commandTimeout: Duration)

Properties

open override val mtu: Int

Maximum payload size per write, in bytes.

open override val notifications: Flow<ByteArray>

Incoming notifications from the DFU Control Point characteristic.

Functions

open override fun close()

Release transport resources synchronously.

open suspend override fun sendCommand(data: ByteArray): ByteArray

Write a command to the DFU Control Point and wait for the response notification.

sendCommandExpectingDisconnect

suspend fun DfuTransport.sendCommandExpectingDisconnect(data: ByteArray)

Send a command where the device is expected to disconnect or reboot before responding (e.g. reset commands).

open suspend override fun sendData(data: ByteArray)

Write firmware data to the peripheral.