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feat(openthread) Add custom transport to OpenThread

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- add a custom transport with Tx() and Rx() callbacks in OpenThread config
  - OpenThread calls Tx() to transmit, Rx() to receive data
  - external driver provides the transport for sending data between OT RCP and Host
- add an OpenThread call used by external driver to send a signal to OpenThread when there is incoming data
This commit is contained in:
Soh Kam Yung
2026-06-16 13:28:20 +08:00
committed by sohkamyung
parent 09d2eacbef
commit 8c87790e47
16 changed files with 818 additions and 23 deletions
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components/openthread/Kconfig
+17
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@@ -201,6 +201,11 @@ menu "OpenThread"
help
Select this to connect to a Radio Co-Processor via SPI.
config OPENTHREAD_RADIO_SPINEL_CUSTOM
bool "Connect via Custom Transport"
help
Select this to connect to a Radio Co-Processor via a provided Custom Transport.
config OPENTHREAD_RADIO_154_NONE
bool "Disable the Thread radio based on 15.4 link"
help
@@ -232,6 +237,11 @@ menu "OpenThread"
bool "USB RCP"
help
Select this to enable connection to host over USB JTAG serial.
config OPENTHREAD_RCP_CUSTOM
bool "Custom Transport RCP"
help
Select this to enable a custom transport connection to host
endchoice
config OPENTHREAD_NCP_VENDOR_HOOK
@@ -500,6 +510,13 @@ menu "OpenThread"
help
Set the OpenThread UART buffer size.
config OPENTHREAD_TRANSPORT_BUFFER_SIZE
depends on OPENTHREAD_RCP_CUSTOM || OPENTHREAD_RADIO_SPINEL_CUSTOM
int "The custom transport received buffer size of openthread"
default 2048
help
Set the OpenThread Custom transport buffer size.
config OPENTHREAD_MAC_MAX_CSMA_BACKOFFS_DIRECT
int "Maximum backoffs times before declaring a channel access failure."
default 4