Tool/software: Code Composer Studio
Hi,
I wrote a function to remove an offset from a sample and saturate it if the operation extrapolates the int16 range.
However, apparently when the result off subtraction is "-1" there are some weird behaviors returning "-255", "-256", "255" or "256".
If the offset is sufficient to the result be completely positive or negative there are no spikes (second half of plot).
During the test, I noted that this behavior happens inside the "else" precisely when there is no saturation happening, but there is something affecting the result of subtraction. Other weird behavior is that I can't trigger this behavior inside debugger (running line by line or even putting an "if (sub < -100)" to halt the execution).
I tested the same function (code) on Arduino: Receive the data with offset and then remove it, and there are no spikes.
What is the problem?
