From 776d5e6ba3b7dacc6c6c4dd53aa6854f25f79592 Mon Sep 17 00:00:00 2001
From: Alexander Malishev <malishev@gmail.com>
Date: Mon, 30 Apr 2018 22:41:55 +0400
Subject: [PATCH] HAL_ChibiOS: Fixed s-bus signal polarity in
 SoftSigReaderInt.cpp

---
 libraries/AP_HAL_ChibiOS/SoftSigReaderInt.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libraries/AP_HAL_ChibiOS/SoftSigReaderInt.cpp b/libraries/AP_HAL_ChibiOS/SoftSigReaderInt.cpp
index a93ddd8044..916dc62230 100644
--- a/libraries/AP_HAL_ChibiOS/SoftSigReaderInt.cpp
+++ b/libraries/AP_HAL_ChibiOS/SoftSigReaderInt.cpp
@@ -45,7 +45,11 @@ void SoftSigReaderInt::init(EICUDriver* icu_drv, eicuchannel_t chan)
         icucfg.iccfgp[i]=nullptr;
     }
     icucfg.iccfgp[chan] = &channel_config;
+#ifdef HAL_RCIN_IS_INVERTED
     channel_config.alvl = EICU_INPUT_ACTIVE_HIGH;
+#else
+    channel_config.alvl = EICU_INPUT_ACTIVE_LOW;
+#endif
     channel_config.capture_cb = _irq_handler;
     eicuStart(_icu_drv, &icucfg);
     //sets input filtering to 4 timer clock