From 028d0cf609dcb78b1ad70ac030284de1f76f0669 Mon Sep 17 00:00:00 2001
From: Geoffrey Merck <F4FXL@users.noreply.github.com>
Date: Sun, 26 Apr 2020 12:38:23 +0200
Subject: [PATCH] Add q31_t cast

---
 FMCTCSSRX.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/FMCTCSSRX.cpp b/FMCTCSSRX.cpp
index ade0491..57fbfbe 100644
--- a/FMCTCSSRX.cpp
+++ b/FMCTCSSRX.cpp
@@ -122,7 +122,7 @@ CTCSSState CFMCTCSSRX::process(q15_t sample)
   q31_t t3 = t2 * 2;
 
   // m_q0 = m_coeffDivTwo * m_q1 * 2 - q2 + sample
-  m_q0 = t3 - q2 + sample;
+  m_q0 = t3 - q2 + q31_t(sample);
 
   m_count++;
   if (m_count == N) {