From 0a1c0716ede3c8c3b84f6c137bc15c12c6b4aec7 Mon Sep 17 00:00:00 2001
From: Mark Qvist <markq@qvistconsult.com>
Date: Mon, 7 Apr 2014 13:43:50 +0200
Subject: [PATCH] Preamble timing

---
 Modem/afsk.c   | 2 +-
 Modem/config.h | 2 +-
 buildrev.h     | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Modem/afsk.c b/Modem/afsk.c
index b16ffa1..fd2c0f2 100644
--- a/Modem/afsk.c
+++ b/Modem/afsk.c
@@ -281,7 +281,7 @@ void afsk_adc_isr(Afsk *afsk, int8_t currentSample) {
 
 	afsk->iirY[0] = afsk->iirY[1];
 	
-	//af->iirY[1] = afsk->iirX[0] + afsk->iirX[1] + (afsk->iirY[0] >> 1) + (afsk->iirY[0] >> 3) + (afsk->iirY[0] >> 5); // Butterworth
+	//afsk->iirY[1] = afsk->iirX[0] + afsk->iirX[1] + (afsk->iirY[0] >> 1) + (afsk->iirY[0] >> 3) + (afsk->iirY[0] >> 5); // Butterworth
 	afsk->iirY[1] = afsk->iirX[0] + afsk->iirX[1] + (afsk->iirY[0] >> 1); // Chebyshev
 
 
diff --git a/Modem/config.h b/Modem/config.h
index b44486a..d032a76 100644
--- a/Modem/config.h
+++ b/Modem/config.h
@@ -11,7 +11,7 @@
 #define CONFIG_AFSK_RXTIMEOUT 0				// How long a read operation from the modem
 											// will wait for data before timing out.
 
-#define CONFIG_AFSK_PREAMBLE_LEN 1000UL		// The length of the packet preamble in milliseconds
+#define CONFIG_AFSK_PREAMBLE_LEN 350UL		// The length of the packet preamble in milliseconds
 #define CONFIG_AFSK_TRAILER_LEN 100UL		// The length of the packet tail in milliseconds
 
 #endif
\ No newline at end of file
diff --git a/buildrev.h b/buildrev.h
index e1d8ca6..05a6c74 100644
--- a/buildrev.h
+++ b/buildrev.h
@@ -1,2 +1,2 @@
-#define VERS_BUILD 439
+#define VERS_BUILD 444
 #define VERS_HOST  "vixen"