1. Fft_exter_int

1.1. Function description:

This demo shows how to trigger FFT external calculation done interrupt.

External calculation configure and enable:

Enable global interrupt & register FFT interrupt.
Initialize & configure the FFT, enable Q15 complex data multiplication arithmetic.
Enable external calculation done interrupt.
Set the address of operand 1 & 2 input data, then start calculation.
Waiting trigger the related interrupt and enter interrupt service routine.

Note

Only RTL configure the FFT exter calculation, the ctest is valid.

If successfully trigger and enter interrupt service routine, then print pass, if not print fail.

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