From a23e821f944e95ad61492539ea823e148d705b98 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Fri, 7 May 2021 11:48:09 +1000
Subject: [PATCH] AP_Periph: allow safety LED as backup main LED for DNA

---
 Tools/AP_Periph/can.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Tools/AP_Periph/can.cpp b/Tools/AP_Periph/can.cpp
index c38b8fb4a9..4d212849f1 100644
--- a/Tools/AP_Periph/can.cpp
+++ b/Tools/AP_Periph/can.cpp
@@ -1175,6 +1175,9 @@ static void can_wait_node_id(void)
                 // blink LED in recognisable pattern while waiting for DNA
 #ifdef HAL_GPIO_PIN_LED
                 palWriteLine(HAL_GPIO_PIN_LED, (led_pattern & (1U<<led_idx))?1:0);
+#elif defined(HAL_GPIO_PIN_SAFE_LED)
+                // or use safety LED if defined
+                palWriteLine(HAL_GPIO_PIN_SAFE_LED, (led_pattern & (1U<<led_idx))?1:0);
 #else
                 (void)led_pattern;
                 (void)led_idx;