decimal to hexadecimal with fixed point
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I have the following code: that turns a string hexadecimal value into a numbers like [-0.12 -0.34 0.67 0.54 -0.128 0.256 ...]:
f_aux0 = fi(1,0,8,0);
% Read first value
t_dat0 = fgetl(fid0);
t_dat1 = fgetl(fid1);
% Get data arrays
while (i < l)
f_aux0.hex = t_dat0;
ADC(i) = (f_aux0.data - 2^7)/2^7;
(...)
that turns a string hexadecimal value into a numbers like [-0.12 -0.34 0.67 0.54 -0.128 0.256 ...].
I want to do the inverse, this means, to convert a number like [-0.12 -0.34 0.67(...) in hexadecimal with the same " fi "
I also tried something like this:
adc=adc + (adc<0).*2^7;
hexstring=dec2hex(adc, ceil(7/4));
But gave me an error, in some cases the values were negative...
If some one can help me.
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Answers (1)
Jessica Clayton
on 2 Dec 2020
I understand that you are trying to convert between decimal and hex notation for fixed point values. This answer provides several different methods of accomplishing this task.
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