Documentation

Use the double function to convert the data to type double before performing the computation. For example:

datas(inc+1) = double(idata);

Use the mvl2dec function to convert the data to an unsigned decimal value. For example:

uval = mvl2dec(oport.val)

This example assumes the standard logic or bit vector is composed of the character literals '1' and '0' only. These are the only two values that can be converted to an integer equivalent.

The mvl2dec function converts the binary data that the MATLAB function receives from the entity's osc_in port to unsigned decimal values that MATLAB can compute.

See mvl2dec for more information on this function.

Use the following application of the mvl2dec function to convert the data to a signed decimal value. For example:

suval = mvl2dec(oport.val, true);

This example assumes the standard logic or bit vector is composed of the character literals '1' and '0' only. These are the only two values that can be converted to an integer equivalent.

Declare the data as a character that matches the character literal for the desired logic state. For STD_LOGIC and STD_ULOGIC, the character can be 'U', 'X', '0', '1', 'Z', 'W', 'L', 'H', or '-'. For BIT, the character can be '0' or '1'. For example:

iport.s1 = 'X'; %STD_LOGIC
iport.bit = '1'; %BIT

Declare the data as a column vector or row vector of characters (as defined above) with one bit per character. For example:

iport.s1v = 'X10ZZ'; %STD_LOGIC_VECTOR
iport.bitv = '10100'; %BIT_VECTOR
iport.uns = dec2mvl(10,8); %UNSIGNED, 8 bits

Declare the data as an array of type int32 with a size that is equivalent to the VHDL array size. Alternatively, convert the data to an array of type int32 with the MATLAB int32 function before returning it. Be sure to limit the data to values with the range of the VHDL type. If you want to, check the right and left fields of the portinfo structure. For example:

iport.int = int32(1:10)';

Declare the data as an array of type double with a size that is equivalent to the VHDL port size. For example:

iport.dbl = ones(2,2); 

Declare a VHDL TIME value as time in seconds, using type double, or as an integer of simulator time increments, using type int64. You can use the two formats interchangeably and what you specify does not depend on the hdldaemon 'time' option (see hdldaemon), which applies to IN ports only. Declare an array of TIME values by using a MATLAB array of identical size and shape. All elements of a given port are restricted to time in seconds (type double) or simulator increments (type int64), but otherwise you can mix the formats. For example:

iport.t1 = int64(1:10)'; %Simulator time
                         %increments
iport.t2 = 1e-9; %1 nsec

Declare the data as a character vector or string scalar for scalar ports or a cell array of character vectors or string array for array ports with each element equal to a label for the defined enumerated type. The 'label' field of the portinfo structure lists all valid labels (see Gaining Access to and Applying Port Information). Except for character literals, labels are not case sensitive. In general, you should specify character literals completely, including the single quotes, as in the first example shown here. .

iport.char = {'''A''', '''B'''}; %Character
                                 %literal
iport.udef = 'mylabel'; %User-defined label

Use the dec2mvl function to convert the integer. For example:

oport.slva =dec2mvl([23 99],8)';

Declare the data as a character or a column vector of characters that matches the character literal for the desired logic state. For example:

iport.bit = '1'; 

Declare the data as a character or a column vector of characters that matches the character literal for the desired logic state. For example:

iport.bit = '1';