1 /*
2 * Copyright (c) 2019, Texas Instruments Incorporated
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * * Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * * Neither the name of Texas Instruments Incorporated nor the names of
17 * its contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
27 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 *
32 */
34 #ifndef MOTOR_PDM_LOC_H
35 #define MOTOR_PDM_LOC_H
37 /* Filter definitions */
38 /* Maximum number of inputs that can be handled in one function call */
39 #define SAMPLES 200
40 /* Maximum length of filter than can be handled */
41 #define FIRFLT_LEN 1001
42 /* Buffer to hold all of the input samples */
43 #define BUFFER_LEN (FIRFLT_LEN - 1 + SAMPLES)
44 /* FIR filter coefficients */
45 double coeffs[ FIRFLT_LEN ];
46 /* Down-sampling ratio*/
47 #define DRATIO 200
49 /* Anomaly detection parameters*/
50 #define START_FIND_THRESHOLD 150
51 #define STOP_FIND_THRESHOLD 1500
52 #define HANGOVER_TIME 20
54 /* Buffering for Qt display definitions */
55 #define DISPLAY_VECTOR 6
56 #define DISPLAY_MAX_BUFFER (DISPLAY_VECTOR*64*4096)
57 static int display_rd_data_cnt = 0;
58 static int display_wr_data_cnt = 0;
59 static double display_data_ready_to_use[DISPLAY_MAX_BUFFER];
61 void firFloatInit( double *insamp, int len_delay_line);
62 void firFloat( double *coeffs, double *insamp, int filterLength,
63 double *input, int length,
64 double *output);
66 #endif //MOTOR_PDM_LOC_H