The following MCode function shows how to use the disp function to print variable values.
function x = testdisp(a, b)
persistent dly, dly = xl_state(zeros(1, 8), a);
persistent rom, rom = xl_state([3, 2, 1, 0], a);
disp('Hello World!');
disp(['num2str(dly) is ', num2str(dly)]);
disp('disp(dly) is ');
disp(dly);
disp('disp(rom) is ');
disp(rom);
a2 = dly.back;
dly.push_front_pop_back(a);
x = a + b;
disp(['a = ', num2str(a), ', ', ...
'b = ', num2str(b), ', ', ...
'x = ', num2str(x)]);
disp(num2str(true));
disp('disp(10) is');
disp(10);
disp('disp(-10) is');
disp(-10);
disp('disp(a) is ');
disp(a);
disp('disp(a == b)');
disp(a==b);
Select the Enable printing with disp option.
Figure 1. Enable Printing with disp
Here are the lines that are displayed on the MATLAB console for the first simulation step.
mcode_block_disp/MCode (Simulink time: 0.000000, FPGA clock: 0)
Hello World!
num2str(dly) is [0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000, 0.000000]
disp(dly) is
type: Fix_11_7,
maxlen: 8,
length: 8,
0: binary 0000.0000000, double 0.000000,
1: binary 0000.0000000, double 0.000000,
2: binary 0000.0000000, double 0.000000,
3: binary 0000.0000000, double 0.000000,
4: binary 0000.0000000, double 0.000000,
5: binary 0000.0000000, double 0.000000,
6: binary 0000.0000000, double 0.000000,
7: binary 0000.0000000, double 0.000000,
disp(rom) is
type: Fix_11_7,
maxlen: 4,
length: 4,
0: binary 0011.0000000, double 3.0,
1: binary 0010.0000000, double 2.0,
2: binary 0001.0000000, double 1.0,
3: binary 0000.0000000, double 0.0,
a = 0.000000, b = 0.000000, x = 0.000000
1
disp(10) is
type: UFix_4_0, binary: 1010, double: 10.0
disp(-10) is
type: Fix_5_0, binary: 10110, double: -10.0
disp(a) is
type: Fix_11_7, binary: 0000.0000000, double: 0.000000
disp(a == b)
type: Bool, binary: 1, double: 1