From 204d5e452d646ec0525aa5e977b2cc7abdb5c283 Mon Sep 17 00:00:00 2001
From: Michael Jerris <mike@jerris.com>
Date: Tue, 5 Jun 2007 03:56:59 +0000
Subject: [PATCH] add v.23 modem definitions.

git-svn-id: http://svn.openzap.org/svn/openzap/trunk@213 a93c3328-9c30-0410-af19-c9cd2b2d52af
---
 libs/openzap/src/dsp/fsk.c |  8 ++++++++
 libs/openzap/src/dsp/fsk.h | 14 ++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/libs/openzap/src/dsp/fsk.c b/libs/openzap/src/dsp/fsk.c
index a53fa81e7b..d2beee6484 100644
--- a/libs/openzap/src/dsp/fsk.c
+++ b/libs/openzap/src/dsp/fsk.c
@@ -55,6 +55,14 @@
 #define V23_SPACE				2100
 #define V23_BAUD				1200
 
+static fsk_modem_definition_t fsk_modem_definitions[] =
+{
+    { /* FSK_V23_FORWARD_MODE1	*/	1700,	1300,	600		},
+    { /* FSK_V23_FORWARD_MODE2	*/	2100,	1300,	1200	},
+    { /* FSK_V23_BACKWARD		*/	450,	390,	75		},
+    { /* FSK_BELL202			*/	2200,	1200,	1200	},
+};
+
 /*
  *	dsp_fsk_attr_init
  *
diff --git a/libs/openzap/src/dsp/fsk.h b/libs/openzap/src/dsp/fsk.h
index b494593ebf..0f800bdc12 100644
--- a/libs/openzap/src/dsp/fsk.h
+++ b/libs/openzap/src/dsp/fsk.h
@@ -35,6 +35,20 @@
 #define	__FSK_H__
 #include "uart.h"
 
+typedef struct {
+    int freq_space;		/* Frequency of the 0 bit				*/
+    int freq_mark;		/* Frequency of the 1 bit				*/
+    int baud_rate;		/* baud rate for the modem				*/
+} fsk_modem_definition_t;
+
+/* Must be kept in sync with fsk_modem_definitions array in fsk.c	*/
+typedef enum {
+    FSK_V23_FORWARD_MODE1 = 0,	/* Maximum 600 bps for long haul	*/
+    FSK_V23_FORWARD_MODE2,		/* Standard 1200 bps V.23			*/
+    FSK_V23_BACKWARD,			/* 75 bps return path for V.23		*/
+    FSK_BELL202					/* Bell 202 half-duplex 1200 bps	*/
+} fsk_modem_types_t;
+
 typedef enum {
 	FSK_STATE_CHANSEIZE = 0,
 	FSK_STATE_CARRIERSIG,