example_processing_noncoherent_mean.c
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1 // Copyright (c) Acconeer AB, 2022-2024
2 // All rights reserved
3 // This file is subject to the terms and conditions defined in the file
4 // 'LICENSES/license_acconeer.txt', (BSD 3-Clause License) which is part
5 // of this source code package.
6
7 /** \example example_processing_noncoherent_mean.c
8 * @brief example_processing_noncoherent_mean.c
9 * Example program that shows how to calculate the non-coherent mean of the values in
10 * an A121 sparse IQ frame with multiple sweeps.
11 */
12
13 #include <stdbool.h>
14 #include <stdint.h>
15 #include <stdio.h>
16
17 #include "acc_config.h"
18 #include "acc_definitions_a121.h"
19 #include "acc_hal_definitions_a121.h"
20 #include "acc_hal_integration_a121.h"
21 #include "acc_integration_log.h"
22 #include "acc_rss_a121.h"
23 #include "acc_version.h"
24
25 #include "acc_processing_helpers.h"
26
27 #define SENSOR_ID (1U)
28
29 #define SWEEPS_PER_FRAME 16
30
31 static void update_configuration(acc_config_t *config);
32
33 int acconeer_main(int argc, char *argv[]);
34
35 int acconeer_main(int argc, char *argv[])
36 {
37 (void)argc;
38 (void)argv;
39
40 acc_control_helper_t control_helper_state = {0};
41
42 printf("Acconeer software version %s\n", acc_version_get());
43
44 const acc_hal_a121_t *hal = acc_hal_rss_integration_get_implementation();
45
46 if (!acc_rss_hal_register(hal))
47 {
48 return EXIT_FAILURE;
49 }
50
51 bool res = acc_control_helper_create(&control_helper_state, SENSOR_ID);
52
53 if (!res)
54 {
55 printf("acc_control_helper_create() failed\n");
56 return EXIT_FAILURE;
57 }
58
59 update_configuration(control_helper_state.config);
60
61 res = acc_control_helper_activate(&control_helper_state);
62
63 if (!res)
64 {
65 printf("acc_control_helper_activate() failed\n");
66 acc_control_helper_destroy(&control_helper_state);
67 return EXIT_FAILURE;
68 }
69
70 uint32_t sweep_data_length = control_helper_state.proc_meta.sweep_data_length;
71 uint32_t point_vector_length = SWEEPS_PER_FRAME;
72
73 acc_vector_float_t *current_sweep_noncoherent_mean_amplitude = acc_vector_float_alloc(sweep_data_length);
74 acc_vector_iq_t *point_vector = acc_vector_iq_alloc(point_vector_length);
75
76 bool mem_ok = (current_sweep_noncoherent_mean_amplitude != NULL) && (point_vector != NULL);
77 if (!mem_ok)
78 {
79 printf("Memory allocation for vectors failed\n");
80 }
81 else
82 {
83 uint32_t iterations = 25U;
84 for (uint32_t i = 0U; i < iterations; i++)
85 {
86 if (!acc_control_helper_get_next(&control_helper_state))
87 {
88 printf("acc_control_helper_get_next() failed\n");
89 break;
90 }
91
92 // The acc_vector_iq_noncoherent_mean calculates the non-coherent mean by taking the mean value
93 // of the complex vector elements and then return the absabsolute value of the mean
94 // non-coherent mean = (z=0..n) mean(sqrt(real(z)^2 + imag(z)^2))
95
96 for (uint32_t p = 0U; p < sweep_data_length; p++)
97 {
98 acc_get_iq_point_vector(&control_helper_state, p, point_vector);
99 current_sweep_noncoherent_mean_amplitude->data[p] = acc_vector_iq_noncoherent_mean_amplitude(point_vector);
100 }
101
102 acc_vector_float_print("Non-coherent mean amplitude", current_sweep_noncoherent_mean_amplitude);
103
104 uint32_t max_peak_index = acc_vector_float_argmax(current_sweep_noncoherent_mean_amplitude);
105 printf("Highest peak index: %" PRIu32 ", peak ampliude %" PRIfloat "\n",
106 max_peak_index,
107 ACC_LOG_FLOAT_TO_INTEGER(current_sweep_noncoherent_mean_amplitude->data[max_peak_index]));
108 }
109 }
110
111 acc_vector_iq_free(point_vector);
112 acc_vector_float_free(current_sweep_noncoherent_mean_amplitude);
113 acc_control_helper_destroy(&control_helper_state);
114
115 printf("Application finished OK\n");
116
117 return EXIT_SUCCESS;
118 }
119
120 static void update_configuration(acc_config_t *config)
121 {
122 int32_t start_point = 100; // start at 250 mm
123 uint16_t step_length = 2; // 2*2.5 mm = 5 mm
124 uint16_t num_points = 100; // range length 2*100*2.5 mm = 500 mm
125
126 acc_config_start_point_set(config, start_point);
127 acc_config_num_points_set(config, num_points);
128 acc_config_step_length_set(config, step_length);
129 acc_config_profile_set(config, ACC_CONFIG_PROFILE_2);
130 acc_config_hwaas_set(config, 30);
131 // The processing in this example assumes that sweeps_per_frame > 1
132 acc_config_sweeps_per_frame_set(config, SWEEPS_PER_FRAME);
133 acc_config_prf_set(config, ACC_CONFIG_PRF_13_0_MHZ);
134 }
acc_config_start_point_set
void acc_config_start_point_set(acc_config_t *config, int32_t start_point)
Set the starting point of the sweep.
acc_control_helper_create
bool acc_control_helper_create(acc_control_helper_t *radar, acc_sensor_id_t sensor_id)
Create a helper instance.
Definition: acc_control_helper.c:41
acc_rss_a121.h
acc_get_iq_point_vector
void acc_get_iq_point_vector(const acc_control_helper_t *control_helper_state, uint32_t point, acc_vector_iq_t *vector_out)
Extract an IQ vector with sweep data for a specific point from a newly captured IQ frame with multipl...
Definition: acc_processing_helpers.c:152
acc_vector_float_free
void acc_vector_float_free(acc_vector_float_t *vector)
Free storage of data elements in a float vector.
Definition: acc_processing_helpers.c:85
acc_vector_iq_free
void acc_vector_iq_free(acc_vector_iq_t *vector)
Free storage of data elements in an IQ vector.
Definition: acc_processing_helpers.c:73
acc_control_helper_t::config
acc_config_t * config
Definition: acc_control_helper.h:25
acc_version.h
SWEEPS_PER_FRAME
#define SWEEPS_PER_FRAME
Definition: example_processing_noncoherent_mean.c:29
acc_config_profile_set
void acc_config_profile_set(acc_config_t *config, acc_config_profile_t profile)
Set a profile.
acc_config_sweeps_per_frame_set
void acc_config_sweeps_per_frame_set(acc_config_t *config, uint16_t sweeps)
Set sweeps per frame.
acc_vector_float_t::data
float * data
Definition: acc_processing_helpers.h:36
SENSOR_ID
#define SENSOR_ID
Definition: example_processing_noncoherent_mean.c:27
acconeer_main
int acconeer_main(int argc, char *argv[])
Assembly test example.
Definition: example_processing_noncoherent_mean.c:35
acc_control_helper_destroy
void acc_control_helper_destroy(acc_control_helper_t *radar)
Destroy a helper instance.
Definition: acc_control_helper.c:50
config
cargo_config_t config
Definition: i2c_example_cargo.c:34
ACC_CONFIG_PROFILE_2
@ ACC_CONFIG_PROFILE_2
Definition: acc_definitions_a121.h:53
acc_hal_rss_integration_get_implementation
const acc_hal_a121_t * acc_hal_rss_integration_get_implementation(void)
Get hal implementation reference.
Definition: acc_hal_integration_stm32cube_xm.c:152
acc_vector_iq_t
Definition: acc_processing_helpers.h:27
acc_hal_a121_t
Definition: acc_hal_definitions_a121.h:82
acc_control_helper_t::proc_meta
acc_processing_metadata_t proc_meta
Definition: acc_control_helper.h:32
acc_rss_hal_register
bool acc_rss_hal_register(const acc_hal_a121_t *hal)
Register an integration.
acc_config_hwaas_set
void acc_config_hwaas_set(acc_config_t *config, uint16_t hwaas)
Set the hardware accelerated average samples (HWAAS)
acc_processing_metadata_t::sweep_data_length
uint16_t sweep_data_length
Definition: acc_processing.h:41
acc_hal_integration_a121.h
acc_version_get
const char * acc_version_get(void)
Get the version of the Acconeer software.
acc_config_t
struct acc_config acc_config_t
Definition: acc_config.h:24
printf
#define printf
Definition: printf.h:60
acc_config_step_length_set
void acc_config_step_length_set(acc_config_t *config, uint16_t step_length)
Set the step length in a sweep.
acc_config_num_points_set
void acc_config_num_points_set(acc_config_t *config, uint16_t num_points)
Set the number of data points to measure.
acc_hal_definitions_a121.h
update_configuration
static void update_configuration(acc_config_t *config)
Definition: example_processing_noncoherent_mean.c:120
acc_processing_helpers.h
acc_vector_float_t
Definition: acc_processing_helpers.h:33
acc_integration_log.h
ACC_LOG_FLOAT_TO_INTEGER
#define ACC_LOG_FLOAT_TO_INTEGER(a)
Definition: acc_integration_log.h:26
acc_vector_iq_alloc
acc_vector_iq_t * acc_vector_iq_alloc(uint32_t data_length)
Allocate storage for an IQ vector.
Definition: acc_processing_helpers.c:27
acc_vector_float_alloc
acc_vector_float_t * acc_vector_float_alloc(uint32_t data_length)
Allocate storage for a float vector.
Definition: acc_processing_helpers.c:50
acc_vector_float_print
void acc_vector_float_print(const char *label, acc_vector_float_t *vector_a)
Print float vector.
Definition: acc_processing_helpers.c:401
acc_control_helper_t
Definition: acc_control_helper.h:23
acc_vector_iq_noncoherent_mean_amplitude
float acc_vector_iq_noncoherent_mean_amplitude(const acc_vector_iq_t *vector_a)
Non-coherent mean amplitude of IQ vector.
Definition: acc_processing_helpers.c:331
acc_control_helper_activate
bool acc_control_helper_activate(acc_control_helper_t *radar)
Activate the sensor.
Definition: acc_control_helper.c:81
acc_config_prf_set
void acc_config_prf_set(acc_config_t *config, acc_config_prf_t prf)
Set Pulse Repetition Frequency.
ACC_CONFIG_PRF_13_0_MHZ
@ ACC_CONFIG_PRF_13_0_MHZ
Definition: acc_definitions_a121.h:118
acc_config.h
PRIfloat
#define PRIfloat
Specifier for printing float type using integers.
Definition: acc_integration_log.h:31
acc_control_helper_get_next
bool acc_control_helper_get_next(acc_control_helper_t *radar)
Perform a radar measurement and wait for the result.
Definition: acc_control_helper.c:157
acc_definitions_a121.h
acc_vector_float_argmax
uint32_t acc_vector_float_argmax(acc_vector_float_t *vector_a)
Index of element with maximum value in a float vector.
Definition: acc_processing_helpers.c:357