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MMDVM
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Reduce the C4FSK filter length significantly.

This commit is contained in:
Jonathan Naylor 2016-03-09 07:01:08 +00:00
parent 314b58912b
commit a4814bf351
3 changed files with 4 additions and 6 deletions
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2
Config.h
View File

@ -19,7 +19,7 @@
#if !defined(CONFIG_H)
#define CONFIG_H
#define WANT_DEBUG
// #define WANT_DEBUG
// Allow the use of the COS line to lockout the modem
// #define USE_COS_AS_LOCKOUT

6
IO.cpp
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@ -21,10 +21,8 @@
#include "IO.h"
// Generated using rcosdesign(0.2, 8, 5, 'sqrt') in MATLAB
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;
static q15_t C4FSK_FILTER[] = {2667, 6995, 11237, 14331, 15464, 14331, 11237, 6995, 2667, 0};
const uint16_t C4FSK_FILTER_LEN = 10U;
// 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};

2
SerialPort.cpp
View File

@ -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 20160308 (D-Star/DMR/System Fusion)";
const uint8_t HARDWARE[] = "MMDVM 20160309 (D-Star/DMR/System Fusion)";
const uint8_t PROTOCOL_VERSION = 1U;