diff --git a/libraries/AP_RCProtocol/AP_RCProtocol_DSM.cpp b/libraries/AP_RCProtocol/AP_RCProtocol_DSM.cpp
index bb6c746835..9d7555bebf 100644
--- a/libraries/AP_RCProtocol/AP_RCProtocol_DSM.cpp
+++ b/libraries/AP_RCProtocol/AP_RCProtocol_DSM.cpp
@@ -440,3 +440,25 @@ void AP_RCProtocol_DSM::update(void)
     }
 #endif
 }
+
+// support byte input
+void AP_RCProtocol_DSM::process_byte(uint8_t b)
+{
+    uint32_t now = AP_HAL::millis();
+    if (now - byte_input.last_byte_ms > 3 ||
+        byte_input.ofs == sizeof(byte_input.buf)) {
+        byte_input.ofs = 0;
+    }
+    byte_input.last_byte_ms = now;
+    byte_input.buf[byte_input.ofs++] = b;
+    if (byte_input.ofs == 16) {
+        uint16_t values[8];
+        uint16_t num_values=0;
+        if (dsm_decode(AP_HAL::micros64(), byte_input.buf, values, &num_values, 8) &&
+            num_values >= MIN_RCIN_CHANNELS) {
+            add_input(num_values, values, false);
+        }
+
+        byte_input.ofs = 0;
+    }
+}
diff --git a/libraries/AP_RCProtocol/AP_RCProtocol_DSM.h b/libraries/AP_RCProtocol/AP_RCProtocol_DSM.h
index 956d5be9f0..faad1dadea 100644
--- a/libraries/AP_RCProtocol/AP_RCProtocol_DSM.h
+++ b/libraries/AP_RCProtocol/AP_RCProtocol_DSM.h
@@ -23,6 +23,7 @@ class AP_RCProtocol_DSM : public AP_RCProtocol_Backend {
 public:
     AP_RCProtocol_DSM(AP_RCProtocol &_frontend) : AP_RCProtocol_Backend(_frontend) {}
     void process_pulse(uint32_t width_s0, uint32_t width_s1) override;
+    void process_byte(uint8_t byte) override;
     void start_bind(void) override;
     void update(void) override;
 
@@ -51,4 +52,9 @@ private:
     } bind_state;
     uint32_t bind_last_ms;
 
+    struct {
+        uint8_t buf[16];
+        uint8_t ofs;
+        uint32_t last_byte_ms;
+    } byte_input;
 };