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https://github.com/Genaker/LoraSA.git
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643 lines
21 KiB
C++
643 lines
21 KiB
C++
/**
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RadioLib SX126x Spectrum Scan
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This code perform a spectrum power scan using SX126x.
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The output is in the form of scan lines, each line has 33 power bins.
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First power bin corresponds to -11 dBm, the second to -15 dBm and so on.
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Higher number of samples in a bin corresponds to more power received
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at that level.
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To show the results in a plot, run the Python script
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RadioLib/extras/SX126x_Spectrum_Scan/SpectrumScan.py
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WARNING: This functionality is experimental and requires a binary patch
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to be uploaded to the SX126x device. There may be some undocumented
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side effects!
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For default module settings, see the wiki page
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https://github.com/jgromes/RadioLib/wiki/Default-configuration#sx126x---lora-modem
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For full API reference, see the GitHub Pages
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https://jgromes.github.io/RadioLib/
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*/
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// Turns the 'PRG' button into the power button, long press is off
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// TODO add it to compiler options using -DHELTEC_POWER_BUTTON
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#define HELTEC_POWER_BUTTON // must be before "#include <heltec_unofficial.h>"
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#include <Arduino.h>
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#include <heltec_unofficial.h>
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// This file contains a binary patch for the SX1262
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#include "modules/SX126x/patches/SX126x_patch_scan.h"
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// project components
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#include "global_config.h"
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#include "ui.h"
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// -----------------------------------------------------------------
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// CONFIGURATION OPTIONS
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// -----------------------------------------------------------------
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typedef enum
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{
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METHOD_RSSI = 0u,
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METHOD_SPECTRAL
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} TSCAN_METOD_ENUM;
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#define SCAN_METHOD METHOD_SPECTRAL
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// Feature to scan diapazones. Other frequency settings will be ignored.
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int SCAN_RANGES[] = {};
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// int SCAN_RANGES[] = {850890, 920950};
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// MHZ per page
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// to put everething into one page set RANGE_PER_PAGE = FREQ_END - 800
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unsigned int RANGE_PER_PAGE = FREQ_END - FREQ_BEGIN; // FREQ_END - FREQ_BEGIN
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// To Enable Multi Screen scan
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// unsigned int RANGE_PER_PAGE = 50;
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// Default Range on Menu Button Switch
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#define DEFAULT_RANGE_PER_PAGE 50
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// TODO: Ignore power lines
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#define UP_FILTER 5
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#define LOW_FILTER 3
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#define FILTER_SPECTRUM_RESULTS true
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// Number of samples for each frequency scan. Fewer samples = better temporal resolution.
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// if more than 100 it can freez
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#define SAMPLES 100 //(scan time = 1294)
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// number of samples for RSSI method
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#define SAMPLES_RSSI 21 //
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#define RANGE (int)(FREQ_END - FREQ_BEGIN)
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#define SINGLE_STEP (float)(RANGE / STEPS)
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unsigned int range = (int)(FREQ_END - FREQ_BEGIN);
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unsigned int fr_begin = FREQ_BEGIN;
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unsigned int fr_end = FREQ_BEGIN;
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unsigned int iterations = RANGE / RANGE_PER_PAGE;
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// unsigned int range_frequency = FREQ_END - FREQ_BEGIN;
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unsigned int median_frequency = FREQ_BEGIN + FREQ_END - FREQ_BEGIN / 2;
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// #define OSD_ENABLED true // unused
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// #define DISABLE_PLOT_CHART false // unused
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// Array to store the scan results
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uint16_t result[RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE];
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uint16_t filtered_result[RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE];
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// Waterfall array
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bool waterfall[10][STEPS][10]; // 10 - ???
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// global variable
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// Used as a Led Light and Buzzer/count trigger
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bool first_run = false;
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// drone detection flag
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bool drone_detected = false;
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bool detected = false;
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unsigned int drone_detection_level = DEFAULT_DRONE_DETECTION_LEVEL;
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unsigned int drone_detected_frequency_start = 0;
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unsigned int drone_detected_frequency_end = 0;
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unsigned int detection_count = 0;
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bool single_page_scan = false;
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bool SOUND_ON = true;
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unsigned int scan_time = 0;
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unsigned int scan_start_time = 0;
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#ifdef PRINT_PROFILE_TIME
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uint64_t scan_start = 0;
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#endif
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unsigned int x, y, scan_iteration, w = 0;
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unsigned int ranges_count = 0;
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float freq = 0;
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int rssi = 0;
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int state = 0;
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int result_index = 0;
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unsigned int button_pressed_counter = 0;
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void setup(void)
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{
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float vbat;
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float resolution;
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pinMode(LED, OUTPUT);
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pinMode(BUZZER_PIN, OUTPUT);
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pinMode(REB_PIN, OUTPUT);
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heltec_setup();
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UI_Init(&display);
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for (int i = 0; i < 200; i++)
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{
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button.update();
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delay(10);
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if (button.pressed())
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{
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SOUND_ON = false;
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tone(BUZZER_PIN, 205, 100);
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delay(50);
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tone(BUZZER_PIN, 205, 100);
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break;
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}
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}
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// initialize SX1262 FSK modem at the initial frequency
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both.println("Init radio");
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RADIOLIB_OR_HALT(radio.beginFSK(FREQ_BEGIN));
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// upload a patch to the SX1262 to enable spectral scan
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// NOTE: this patch is uploaded into volatile memory,
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// and must be re-uploaded on every power up
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both.println("Upload SX1262 patch");
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// Upload binary patch into the SX126x device RAM. Patch is needed to e.g.,
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// enable spectral scan and must be uploaded again on every power cycle.
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RADIOLIB_OR_HALT(radio.uploadPatch(sx126x_patch_scan, sizeof(sx126x_patch_scan)));
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// configure scan bandwidth and disable the data shaping
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both.println("Setting up radio");
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RADIOLIB_OR_HALT(radio.setRxBandwidth(BANDWIDTH));
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// and disable the data shaping
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RADIOLIB_OR_HALT(radio.setDataShaping(RADIOLIB_SHAPING_NONE));
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both.println("Starting scanning...");
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vbat = heltec_vbat();
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both.printf("V battery: %.2fV (%d%%)\n", vbat,
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heltec_battery_percent(vbat));
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delay(300);
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display.clear();
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resolution = RANGE / STEPS;
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if (RANGE_PER_PAGE == range)
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{
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single_page_scan = true;
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}
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else
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{
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single_page_scan = false;
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}
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// Adjust range if it is not even to RANGE_PER_PAGE
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if (!single_page_scan && range % RANGE_PER_PAGE != 0)
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{
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// range = range + range % RANGE_PER_PAGE;
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}
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if (single_page_scan)
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{
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both.println("Single Page Screen MODE");
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both.println("Multi Screen View Press P - button");
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both.println("Single Screen Resolution: " + String(resolution) + "Mhz/tick");
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both.println("Curent Resolution: " + String((float)RANGE_PER_PAGE / STEPS) + "Mhz/tick");
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for (int i = 0; i < 500; i++)
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{
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button.update();
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delay(10);
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both.print(".");
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if (button.pressed())
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{
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RANGE_PER_PAGE = DEFAULT_RANGE_PER_PAGE;
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single_page_scan = false;
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tone(BUZZER_PIN, 205, 100);
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delay(50);
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tone(BUZZER_PIN, 205, 100);
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break;
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}
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}
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}
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else
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{
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both.println("Multi Page Screen MODE");
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both.println("Single screen View Press P - button");
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both.println("Single screen Resolution: " + String(resolution) + "Mhz/tick");
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both.println("Curent Resolution: " + String((float)RANGE_PER_PAGE / STEPS) + "Mhz/tick");
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for (int i = 0; i < 500; i++)
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{
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button.update();
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delay(10);
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both.print(".");
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if (button.pressed())
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{
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RANGE_PER_PAGE = range;
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single_page_scan = true;
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tone(BUZZER_PIN, 205, 100);
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break;
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}
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}
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}
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display.clear();
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// waterfall start line y-axis
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w = WATERFALL_START;
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}
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void loop(void)
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{
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UI_displayDecorate(0, 0, false); // some default values
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drone_detected = false;
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detection_count = 0;
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drone_detected_frequency_start = 0;
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ranges_count = 0;
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#ifdef PRINT_PROFILE_TIME
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scan_start = millis();
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#endif
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if (!ANIMATED_RELOAD || !single_page_scan)
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{
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// clear the scan plot rectangle
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UI_clearPlotter();
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}
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// do the scan
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range = FREQ_END - FREQ_BEGIN;
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if (RANGE_PER_PAGE > range)
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{
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RANGE_PER_PAGE = range;
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}
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fr_begin = FREQ_BEGIN;
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fr_end = fr_begin;
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// 50 is a single-screen range
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// TODO: Make 50 a variable with the option to show the full range
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iterations = range / RANGE_PER_PAGE;
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#if 0 // disabled code
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if (range % RANGE_PER_PAGE != 0)
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{
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// add more scan
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//++;
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}
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#endif
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if (RANGE_PER_PAGE == range)
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{
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single_page_scan = true;
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}
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else
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{
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single_page_scan = false;
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}
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for (int range : SCAN_RANGES)
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{
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ranges_count++;
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}
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if (ranges_count > 0)
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{
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iterations = ranges_count;
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single_page_scan = false;
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}
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// Iterating by small ranges by 50 Mhz each pixel is 0.4 Mhz
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for (scan_iteration = 0; scan_iteration < iterations; scan_iteration++)
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{
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range = RANGE_PER_PAGE;
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if (ranges_count == 0)
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{
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fr_begin = (scan_iteration == 0) ? fr_begin : fr_begin += range;
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fr_end = fr_begin + RANGE_PER_PAGE;
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}
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else
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{
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fr_begin = SCAN_RANGES[scan_iteration] / 1000;
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fr_end = SCAN_RANGES[scan_iteration] % 1000;
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range = fr_end - fr_begin;
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}
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if (!ANIMATED_RELOAD || !single_page_scan)
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{
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// clear the scan plot rectangle
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UI_clearPlotter();
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}
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if (single_page_scan == false)
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{
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UI_displayDecorate(fr_begin, fr_end, true);
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}
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drone_detected_frequency_start = 0;
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display.setTextAlignment(TEXT_ALIGN_RIGHT);
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// horizontal x axis loop
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for (x = 0; x < STEPS; x++)
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{
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scan_start_time = millis();
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#if ANIMATED_RELOAD
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UI_drawCursor(x);
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#endif
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waterfall[scan_iteration][x][w] = false;
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freq = fr_begin + (range * ((float)x / STEPS));
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radio.setFrequency(freq);
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// TODO: RSSI METHOD
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// Gets RSSI (Recorded Signal Strength Indicator)
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// Restart continuous receive mode on the new frequency
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// state = radio.startReceive();
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// if (state == RADIOLIB_ERR_NONE) {
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// Serial.println(F("Started continuous receive mode"));
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//} else {
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// Serial.print(F("Failed to start receive mode, error code: "));
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// Serial.println(state);
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//}
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// rssi = radio.getRSSI(false);
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// Serial.println(String(rssi) + "db");
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// delay(25);
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// This code will iterate over the specified frequencies,
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// changing the frequency every
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// second and printing the RSSI value for each frequency to the serial monitor. Adjust the frequencies array
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// to include the specific frequencies you're interested in monitoring.
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// A short delay after changing the frequency
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// ensures the module has time to stabilize and get an accurate RSSI reading.
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#ifdef PRINT_DEBUG
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Serial.println();
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Serial.print("step-");
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Serial.print(x);
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Serial.print(" Frequency:");
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Serial.print(freq);
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Serial.println();
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#endif
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// SpectralScan Method
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#if SCAN_METHOD == METHOD_SPECTRAL
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{
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// start spectral scan third parameter is a sleep interval
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radio.spectralScanStart(SAMPLES, 1);
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// wait for spectral scan to finish
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while (radio.spectralScanGetStatus() != RADIOLIB_ERR_NONE)
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{
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Serial.print("radio.spectralScanGetStatus ERROR: ");
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Serial.println(radio.spectralScanGetStatus());
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heltec_delay(ONE_MILLISEC);
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}
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// read the results Array to which the results will be saved
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radio.spectralScanGetResult(result);
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}
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#endif
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#if SCAN_METHOD == METHOD_RSSI
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// Spectrum analyzer using getRSSI
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{
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state = radio.startReceive(0);
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if (state == RADIOLIB_ERR_NONE)
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{
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#ifdef PRINT_DEBUG
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Serial.println(F("Started continuous receive mode"));
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#endif
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}
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else
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{
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Serial.print(F("Failed to start receive mode, error code: "));
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Serial.println(state);
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}
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for (int r = 1; r < RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE; r++)
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{
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result[r] = 0;
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}
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result_index = 0;
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// N of samples
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for (int r = 1; r < SAMPLES_RSSI; r++)
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{
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rssi = radio.getRSSI(false);
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// delay(ONE_MILLISEC);
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// ToDO: check if 4 is correct value for 33 power bins
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result_index = (abs(rssi) / 4);
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// Debug Information
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#ifdef PRINT_DEBUG
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Serial.print("Frequency: ");
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Serial.println(freq);
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Serial.println(rssi);
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Serial.println(result_index);
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#endif
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// Saving max value only rss is negative so smaller is bigger
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if (result[result_index] > rssi)
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{
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result[result_index] = rssi;
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}
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}
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}
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#endif // SCAN_METHOD == METHOD_RSSI
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detected = false;
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#ifdef FILTER_SPECTRUM_RESULTS
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// Filter Elements without neighbors
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for (y = 1; y < RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE; y++)
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{
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// if RSSI method actual value is -xxx dB
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if (result[y] && (result[y + 1] != 0 || result[y - 1] != 0))
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{
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// Filling the empty pixel between signals int the level < 27 (noise level)
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/* if (y < 27 && result[y + 1] == 0 && result[y + 2] > 0)
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{
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result[y + 1] = 1;
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filtered_result[y + 1] = 1;
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}*/
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filtered_result[y] = 1;
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}
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else
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{
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filtered_result[y] = 0;
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}
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}
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#endif
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for (y = 0; y < RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE; y++)
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{
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#ifdef PRINT_DEBUG
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Serial.printf("%04X,", result[y]);
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#endif
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if (result[y] || y == drone_detection_level)
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{
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// check if we should alarm about a drone presence
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if (filtered_result[y] == 1 && y <= drone_detection_level)
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{
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drone_detected = true;
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#ifdef WATERFALL_ENABLED
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if (single_page_scan)
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{
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// Drone detection true for waterfall
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waterfall[scan_iteration][x][w] = true;
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display.setColor(WHITE);
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display.setPixel(x, w);
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}
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#endif
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if (drone_detected_frequency_start == 0)
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{
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drone_detected_frequency_start = freq;
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}
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drone_detected_frequency_end = freq;
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UI_setLedFlag(true);
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// If level is set to sensitive,
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// start beeping every 10th frequency and shorter
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if (drone_detection_level <= 25)
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{
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if (detection_count == 1 && SOUND_ON)
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{
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tone(BUZZER_PIN, 205, 10); // same action ???
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}
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if (detection_count % 5 == 0 && SOUND_ON)
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{
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tone(BUZZER_PIN, 205, 10); // same action ???
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}
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}
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else
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{
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if (detection_count % 20 == 0 && SOUND_ON)
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{
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tone(BUZZER_PIN, 205, 10); // same action ???
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}
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}
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// draw ... ???
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display.setPixel(x, 1);
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display.setPixel(x, 2);
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display.setPixel(x, 3);
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display.setPixel(x, 4);
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}
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#ifdef WATERFALL_ENABLED
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if (filtered_result[y] == 1 && y > drone_detection_level && single_page_scan && waterfall[scan_iteration][x][w] != true)
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{
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// If drone not found set dark pixel on the waterfall
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// TODO: make something like scrolling up if possible
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waterfall[scan_iteration][x][w] = false;
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display.setColor(BLACK);
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display.setPixel(x, w);
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display.setColor(WHITE);
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}
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#endif
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if (filtered_result[y] == 1)
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{
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// Set signal level pixel
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display.setPixel(x, y);
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detected = true;
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}
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// Draw detection Level line every 2 pixel
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if (y == drone_detection_level && x % 2 == 0)
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{
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display.setPixel(x, y);
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}
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}
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#ifdef PRINT_PROFILE_TIME
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scan_time = millis() - scan_start_time;
|
|
// Huge performance issue if enable
|
|
// Serial.printf("Single Scan took %lld ms\n", scan_time);
|
|
#endif
|
|
}
|
|
|
|
// count detected
|
|
if (detected)
|
|
{
|
|
detection_count++;
|
|
}
|
|
|
|
#ifdef PRINT_DEBUG
|
|
Serial.println("....");
|
|
#endif
|
|
if (first_run || ANIMATED_RELOAD)
|
|
{
|
|
display.display();
|
|
}
|
|
|
|
// Detection level button short press
|
|
if (button.pressedFor(100))
|
|
{
|
|
button.update();
|
|
button_pressed_counter = 0;
|
|
// if long press stop
|
|
while (button.pressedNow())
|
|
{
|
|
delay(10);
|
|
// Print Curent frequency
|
|
display.setTextAlignment(TEXT_ALIGN_CENTER);
|
|
display.drawString(128 / 2, 0, String(freq));
|
|
display.display();
|
|
button_pressed_counter++;
|
|
if (button_pressed_counter > 150)
|
|
{
|
|
digitalWrite(LED, HIGH);
|
|
delay(150);
|
|
digitalWrite(LED, LOW);
|
|
}
|
|
}
|
|
if (button_pressed_counter > 150)
|
|
{
|
|
// Remove Curent Freqancy Text
|
|
display.setTextAlignment(TEXT_ALIGN_CENTER);
|
|
display.setColor(BLACK);
|
|
display.drawString(128 / 2, 0, String(freq));
|
|
display.setColor(WHITE);
|
|
display.display();
|
|
break;
|
|
}
|
|
if (button_pressed_counter > 50 && button_pressed_counter < 150)
|
|
{
|
|
// Visually confirm it's off so user releases button
|
|
display.displayOff();
|
|
// Deep sleep (has wait for release so we don't wake up immediately)
|
|
heltec_deep_sleep();
|
|
break;
|
|
}
|
|
button.update();
|
|
display.setTextAlignment(TEXT_ALIGN_RIGHT);
|
|
// erase old value
|
|
display.setColor(BLACK);
|
|
display.fillRect(128 - 13, 0, 13, 13);
|
|
display.setColor(WHITE);
|
|
drone_detection_level++;
|
|
// print new value
|
|
display.drawString(128, 0, String(drone_detection_level));
|
|
tone(BUZZER_PIN, 104, 150);
|
|
if (drone_detection_level > 30)
|
|
{
|
|
drone_detection_level = 1;
|
|
}
|
|
}
|
|
// wait a little bit before the next scan,
|
|
// otherwise the SX1262 hangs
|
|
// Add more logic before insead of long delay...
|
|
// heltec_delay(1);
|
|
// Loop is needed if heltec_delay(1) not used
|
|
heltec_loop();
|
|
}
|
|
w++;
|
|
if (w > STATUS_TEXT_TOP + 1)
|
|
{
|
|
w = WATERFALL_START;
|
|
}
|
|
#ifdef WATERFALL_ENABLED
|
|
// Draw waterfall position cursor
|
|
if (single_page_scan)
|
|
{
|
|
display.setColor(BLACK);
|
|
display.drawHorizontalLine(0, w, STEPS);
|
|
display.setColor(WHITE);
|
|
}
|
|
#endif
|
|
display.display();
|
|
}
|
|
#ifdef PRINT_DEBUG
|
|
Serial.println("----");
|
|
#endif
|
|
// display.display();
|
|
#ifdef PRINT_PROFILE_TIME
|
|
scan_time = millis() - scan_start;
|
|
Serial.printf("Scan took %lld ms\n", scan_time);
|
|
#endif
|
|
}
|