From 7d77f20ee964160fd01e887a7bc37354f8fd09ee Mon Sep 17 00:00:00 2001
From: Jonathan Naylor <naylorjs@yahoo.com>
Date: Thu, 10 Mar 2016 18:16:01 +0000
Subject: [PATCH] Restore previous C4FSK filter.

---
 IO.cpp         | 6 ++++--
 SerialPort.cpp | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/IO.cpp b/IO.cpp
index 60496bd..9981773 100644
--- a/IO.cpp
+++ b/IO.cpp
@@ -21,8 +21,10 @@
 #include "IO.h"
 
 // Generated using rcosdesign(0.2, 8, 5, 'sqrt') in MATLAB
-static q15_t   C4FSK_FILTER[] = {-770, 2667, 6995, 11237, 14331, 15464, 14331, 11237, 6995, 2667, -770, 0};
-const uint16_t C4FSK_FILTER_LEN = 12U;
+static q15_t   C4FSK_FILTER[] = {401, 104, -340, -731, -847, -553, 112, 909, 1472, 1450, 683, -675, -2144, -3040, -2706, -770, 2667, 6995,
+                                   11237, 14331, 15464, 14331, 11237, 6995, 2667, -770, -2706, -3040, -2144, -675, 683, 1450, 1472, 909, 112,
+                                   -553, -847, -731, -340, 104, 401, 0};
+const uint16_t C4FSK_FILTER_LEN = 42U;
 
 // Generated using gaussfir(0.5, 4, 5) in MATLAB
 static q15_t   GMSK_FILTER[] = {8, 104, 760, 3158, 7421, 9866, 7421, 3158, 760, 104, 8, 0};
diff --git a/SerialPort.cpp b/SerialPort.cpp
index b6f3357..97cb463 100644
--- a/SerialPort.cpp
+++ b/SerialPort.cpp
@@ -57,7 +57,7 @@ const uint8_t MMDVM_DEBUG4       = 0xF4U;
 const uint8_t MMDVM_DEBUG5       = 0xF5U;
 const uint8_t MMDVM_SAMPLES      = 0xF8U;
 
-const uint8_t HARDWARE[]         = "MMDVM 20160309 (D-Star/DMR/System Fusion)";
+const uint8_t HARDWARE[]         = "MMDVM 20160310 (D-Star/DMR/System Fusion)";
 
 const uint8_t PROTOCOL_VERSION   = 1U;