Learning Q15 fractional numbers on dsPIC

To start utilizing DSP (with its A and B accumulators etc.) on need to properly understand fractional Q15 (or sometimes referred Q15.1) format.

Please see this page for information on Q15 and dsPIC:

• https://microchipdeveloper.com/dsp0201:numerical-formats

This project is supposed to be run under Simulator only with suitable breakpoint and Variables window for evaluation.

Demo functions

• void sum_q15_demo(void) - this function sums 0.1 + 0.2 using 3 different ways (float, Q15(x) conversion, Float2Fract(x) conversion).

Recommended software:

• MPLAB X IDE v5.45
• XC16 v1.70