From 0eabad2c6fde26e07df8ff483e5610b99841150e Mon Sep 17 00:00:00 2001
From: dron0gus <dron0gus@gmail.com>
Date: Fri, 3 Jan 2020 17:13:55 +0300
Subject: [PATCH] icu trigger: do not crash on incorrect brainPin (#1082)

* icu trigger: do not crash on incorrect brainPin

* Update trigger_input_icu.cpp
---
 firmware/hw_layer/trigger_input_icu.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/firmware/hw_layer/trigger_input_icu.cpp b/firmware/hw_layer/trigger_input_icu.cpp
index 50a601694a..22589b6092 100644
--- a/firmware/hw_layer/trigger_input_icu.cpp
+++ b/firmware/hw_layer/trigger_input_icu.cpp
@@ -87,6 +87,11 @@ void turnOnTriggerInputPin(const char *msg, int index, bool isTriggerShaft) {
 	}
 
 	digital_input_s* input = startDigitalCapture("trigger", brainPin, true);
+	if (input == NULL) {
+		/* error already reported */
+		return;
+	}
+
 	if (isTriggerShaft) {
 		void * arg = (void*) (index == 0);
 		input->setWidthCallback((VoidInt)(void*)shaftWidthCallback, arg);