Is it possible to pass and use hexadecimal values in simulink, without converting decimal?

I am trying to use hexadecimal values in a model, without converting to decimal. Does simulink have hexadecimal supported blocks?

Answer 1

[Walter Roberson]

No. Hexadecimal is encoded as characters, and character is not a supported Simulink signal type.

You are permitted to pass around vectors of uint8 such as uint8('3e') = uint8([51 101]) and then char() the vector within a MATLAB Function Block or Level 2 S Function that wants the char version.

[Dean DeBastiani]

Thank you very much for your help, this is very useful.

[Walter Roberson]

Andy Bartlett's Answer reminds me that in R2019b, Simulink was enhanced to permit character vectors as a data type.

I cannot think of any special Simulink blocks that work with hex, though.

Answer 2

[Andy Bartlett]

If you are interested in entering parameters in hex or binary

For MATLAB integer types,

then as of R2019b, MATLAB has newly added the ability

to enter literals in hex and binary format.

https://www.mathworks.com/help/matlab/matlab_prog/specify-hexadecimal-and-binary-numbers.html

myParam1 = 0x2A
myParam2 = 0b11111110

For fixed-point fi objects,

values can be entered in hex or binary like, so

myParam3 = fi([],0,8,3,'hex','AC')
myParam4 = fi([],0,8,3,'bin','01101001')
% To check the hex and binary
myParam3.hex
myParam4.bin

If you are interested in viewing the hex or binary representation of signals,

please see

https://www.mathworks.com/matlabcentral/answers/585020-how-do-i-show-the-hex-or-binary-representation-for-an-integer-or-fixed-point-variable-in-matlab?s_tid=srchtitle