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feat(gateway): add support for full IP forwarding of KNX TP telegrams and enhance tunnel frame handling

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Signed-off-by: Tony <tonylu@tony-cloud.com>
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Tony
2026-05-19 03:14:03 +08:00
parent b447da5bfc
commit 3af2995b40
7 changed files with 68 additions and 10 deletions
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README.md
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@@ -34,7 +34,7 @@ The native rewrite now wires a shared `gateway_core` bootstrap component, a mult
KNX Data Secure and KNXnet/IP Secure support are controlled by `GATEWAY_KNX_DATA_SECURE_SUPPORTED` and `GATEWAY_KNX_IP_SECURE_SUPPORTED`. The current KNXnet/IP Secure flag reserves and reports secure service capability, while runtime secure-session transport is still reported as not implemented until that path is wired. The gateway derives its KNX serial identity from the ESP base MAC, and the development factory setup key is deterministically derived from that KNX serial so the same board keeps the same FDSK across NVS erases.
The KNXnet/IP tunnel can start from the built-in default configuration before any ETS download. KNX TP-UART is enabled only when `GATEWAY_KNX_TP_UART_PORT` is `0`, `1`, or `2`; set that UART port to `-1` for IP-only operation. UART TX/RX GPIO values of `-1` mean use the ESP-IDF target default pins for that UART, not disabled. `GATEWAY_KNX_TP_UART_9BIT_MODE` enables the NCN5120/OpenKNX-style 9-bit host frame on the wire, represented on ESP-IDF as 8 data bits plus even parity. Non-UART GPIO options use `-1` as disabled, including the KNX programming button, KNX programming LED, setup AP button, Wi-Fi reset button, and status LED.
The KNXnet/IP tunnel can start from the built-in default configuration before any ETS download. KNX TP-UART is enabled only when `GATEWAY_KNX_TP_UART_PORT` is `0`, `1`, or `2`; set that UART port to `-1` for IP-only operation. UART TX/RX GPIO values of `-1` mean use the ESP-IDF target default pins for that UART, not disabled. `GATEWAY_KNX_TP_UART_9BIT_MODE` enables the NCN5120/OpenKNX-style 9-bit host frame on the wire, represented on ESP-IDF as 8 data bits plus even parity. Enable `GATEWAY_KNX_TP_FULL_IP_FORWARD` when the gateway must mirror all physical TP telegrams back out to KNXnet/IP tunnelling and multicast so ETS can monitor or download other TP devices through the gateway's IP endpoint. Non-UART GPIO options use `-1` as disabled, including the KNX programming button, KNX programming LED, setup AP button, Wi-Fi reset button, and status LED.
When no KNX bridge config or ETS application data has been downloaded, the KNXnet/IP router starts in commissioning mode: OpenKNX receives tunnel programming traffic from ETS, while DALI group routing and REG1-Dali function-property actions stay inactive until ETS reports a configured application.