Map27.h

// Map27.h
//
// Basic definitions for Map27 library
//
// Author: Mike McCauley (mikem@airspayce.com)
// Copyright (C) 2013 Mike McCauley
// $Id: DataLayer.h,v 1.1 2013/07/09 23:38:09 mikem Exp mikem $

//

#ifndef MAP27_MAP27_H
#define MAP27_MAP27_H

// The version of the Map27 protocol we can handle
// Corresponds to "MAP27 Mobile Access Protocol for MPT 1327 equipment Version 1.5" January 1998
#define MAP27_PROTOCOL_VERSION 1

// Default Baud rate
#define MAP27_DEFAULT_BAUD 9600

// N1 4.5.6
// Max message legth this uint can handle
// Actual length is negotiated at link establishment time
#define MAP27_N1                   10
#define MAP27_MAX_MESSAGE_LEN      (16*(MAP27_N1+1))

// k 4.3.2.1
// Max number of pending messages this unit can handle
// MAx window size k
#define MAP27_WINDOW_SIZE      5

// N2 4.5.7
#define MAP27_MAX_RETRANSMISSIONS 10

// N3 4.5.8
#define MAP27_MAX_ACTIVITY_TIMEOUTS 5

// T0 4.5.1
#define MAP27_ESTABLISHMENT_TIMEOUT 100
// T1 is computed by calc_retry_timeout()
// T2 is computed by calc_acknowledgement_timeout()
// T3 4.5.4:
#define MAP27_ACTIVITY_TIMEOUT      15000
// T4 4.5.5
#define MAP27_LINK_FAILURE_DETECTION_TIMEOUT ((MAP27_MAX_ACTIVITY_TIMEOUTS * MAP27_ACTIVITY_TIMEOUT) + 10)

#define min(a,b) ((a)<(b)?(a):(b))
#define max(a,b) ((a)>(b)?(a):(b))


#endif