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Message.m
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Message.m
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classdef Message < handle
%Represents a CAN message
% Holds onto the data related to this message
properties
%Set at initialization
Desc = '' % Description
IDm = 0 % ID Size (Bits) ID length in the
Sm = 0 % Size (bytes) Number of Bytes in the data portion
Tm = 0 % Period (ms) The Minimum period at which the message is sent out.
Jm = 0 % Jitter (ms) The max amount of time between trigger and Queued
Dm = 0 % Deadline (ms) The max allowed time on bus
g = 0 % IDScaler
Cm = 0 % Max Tx Time
m = 0 %Priority of this message
Rm = 0 %Response Time of message
end
methods
%%Message Constructor
function obj = Message(IDm,Sm,Tm,Jm,Dm,Desc)
assert( IDm == 11 || IDm== 29 ,'ID Size must be 11 or 29');
assert( Sm <= 8 && Sm >= 0 , 'Sm must be in range 0-8');
obj.IDm = IDm;
obj.Sm=Sm;
obj.Tm=Tm;
obj.Jm=Jm;
obj.Dm=Dm;
obj.Desc=Desc;
G = 34; %if IDm==11
if(IDm == 29)
G=54;
end
obj.g=G;
end
%Calculates the Tx time given tBit in ms
function setTbit(obj,Tbit)
obj.Cm = (obj.g+8*obj.Sm+13+floor( (obj.g+8*obj.Sm-1)/4) )*Tbit;
end
end
end