add some code

managed_components/espressif__esp-dsp/modules/iir/test_sim/main.c

@@ -0,0 +1,12 @@
+
+void test_iir_biquad();
+
+int main(void)
+{
+    printf("main starts!\n");
+//    xt_iss_profile_enable();
+    test_iir_biquad();
+//    xt_iss_profile_disable();
+
+    printf("Test done\n");
+}

managed_components/espressif__esp-dsp/modules/iir/test_sim/test_iir_biquad.c

@@ -0,0 +1,56 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include "dsp_common.h"
+
+#include "dsps_biquad.h"
+
+#define N_SAMPLES 1024
+int N = N_SAMPLES;
+// Input test array
+float d[N_SAMPLES];
+// output array
+float y[N_SAMPLES];
+float y_ref[N_SAMPLES];
+
+extern void xt_iss_profile_disable();
+extern void xt_iss_profile_enable();
+esp_err_t dsps_biquad_f32_aes3(const float *input, float *output, int len, float *coef, float *w);
+
+void test_iir_biquad()
+{
+    float coeffs_lpf[5] = {0.073802,  0.147603,  0.073802,  -1.250516,  0.545723};
+    float w_lpf[5] = {0, 0};
+    float w_lpf_ref[5] = {0, 0};
+    esp_err_t ret = ESP_OK;
+
+    for (size_t i = 0; i < N; i++) {
+        d[i] = 0;
+    }
+    d[0] = 1;
+    xt_iss_profile_enable();
+    ret = dsps_biquad_f32_ansi(d, y_ref, N, coeffs_lpf, w_lpf_ref);
+    xt_iss_profile_disable();
+    if (ret  != ESP_OK) {
+        printf("dsps_biquad_f32 error = %i\n", ret);
+        return;
+    }
+    xt_iss_profile_enable();
+    ret = dsps_biquad_f32_aes3(d, y, N, coeffs_lpf, w_lpf);
+    xt_iss_profile_disable();
+    if (ret  != ESP_OK) {
+        printf("dsps_biquad_f32 error = %i\n", ret);
+        return;
+    }
+    for (size_t i = 0; i < N; i++) {
+        if (((y[i] - y_ref[i]) > 0.0000001) || (y[i] - y_ref[i]) < -0.0000001) {
+            printf("ERROR result[%i]: %f, expect = %f, diff=%f\n", i, y[i], y_ref[i], y[i] - y_ref[i]);
+            return;
+
+        }
+    }
+    printf("Test Correct!\n");
+
+}