From ef20e6f9883cb518742788d1e18ad77d3ae77724 Mon Sep 17 00:00:00 2001
From: Darafei Praliaskouski <me@komzpa.net>
Date: Tue, 28 Apr 2026 23:34:12 +0400
Subject: [PATCH] feat(config): add dynamic coding rate mode

---
 meshtastic/config.proto | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/meshtastic/config.proto b/meshtastic/config.proto
index 1e7fa997..2257b9f0 100644
--- a/meshtastic/config.proto
+++ b/meshtastic/config.proto
@@ -1069,6 +1069,18 @@ message Config {
       NOT_PRESENT = 2;
     }
 
+    enum DynamicCodingRateMode {
+      /*
+       * Keep using the configured static coding rate.
+       */
+      DCR_OFF = 0;
+
+      /*
+       * Select LoRa coding rate per packet using local airtime policy.
+       */
+      DCR_ON = 1;
+    }
+
     /*
      * When enabled, the `modem_preset` fields will be adhered to, else the `bandwidth`/`spread_factor`/`coding_rate`
      * will be taked from their respective manually defined fields
@@ -1199,6 +1211,12 @@ message Config {
      * Don't use radiolib to initialize the radio, instead listen for a serialHal connection
      */
     bool serial_hal_only = 107;
+
+    /*
+     * Dynamic Coding Rate policy mode. DCR_OFF keeps the configured static coding rate; DCR_ON applies
+     * per-packet CR selection.
+     */
+    DynamicCodingRateMode dcr_mode = 108;
   }
 
   message BluetoothConfig {