pub fn add_q15(src_a: &[q15], src_b: &[q15], dst: &mut [q15])Examples found in repository?
examples/basic_usage.rs (line 22)
5fn main() {
6 println!("=== embedded-dsp Basic Usage Example ===");
7
8 // 1. Vector Operations
9 let a = [1.0f32, 2.0, 3.0, 4.0];
10 let b = [10.0f32, 20.0, 30.0, 40.0];
11 let mut vec_out = [0.0f32; 4];
12 add_f32(&a, &b, &mut vec_out);
13 println!("Vector Add: {:?}", vec_out);
14
15 let dot = dot_prod_f32(&a, &b);
16 println!("Vector Dot Product: {}", dot);
17
18 // 2. Q15 Fixed-Point Saturating Math
19 let q15_a = [20000i16, 25000];
20 let q15_b = [15000i16, 10000];
21 let mut q15_out = [0i16; 2];
22 add_q15(&q15_a, &q15_b, &mut q15_out);
23 println!("Q15 Saturating Add (clamped at 32767): {:?}", q15_out);
24
25 // 3. FIR Filtering
26 let coeffs = [0.25f32, 0.5, 0.25]; // 3-tap moving average filter
27 let mut state = [0.0f32; 3 + 4 - 1];
28 let mut fir = FirInstanceF32::init(3, &coeffs, &mut state);
29
30 let input_signal = [1.0f32, 2.0, 3.0, 4.0];
31 let mut filtered_signal = [0.0f32; 4];
32 fir_f32(&mut fir, &input_signal, &mut filtered_signal);
33 println!("FIR Filter Output: {:?}", filtered_signal);
34
35 // 4. PID Motor Controller
36 let mut pid = PidInstanceF32::new(2.0, 0.1, 0.05);
37 let control_output = pid.process(10.0);
38 println!("PID Control Signal: {}", control_output);
39
40 // 5. 64-Point Complex FFT
41 let mut fft_data = [0.0f32; 128]; // 64 complex pairs [re, im, ...]
42 for i in 0..64 {
43 fft_data[2 * i] = (i as f32 * 0.1).sin();
44 }
45 cfft_f32(&mut fft_data, 64, 0, 1);
46 println!("64-Point Complex FFT processed successfully!");
47}