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LoraSA/src_sa/main.cpp
Alain Sanguinetti 14f9b3ce2d fix: make targets build, except e-ink because of fSPI
2024-08-28 10:16:02 +02:00

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/**
RadioLib SX126x Spectrum Scan
This code perform a spectrum power scan using SX126x.
The output is in the form of scan lines, each line has 33 power bins.
First power bin corresponds to -11 dBm, the second to -15 dBm and so on.
Higher number of samples in a bin corresponds to more power received
at that level.
To show the results in a plot, run the Python script
RadioLib/extras/SX126x_Spectrum_Scan/SpectrumScan.py
WARNING: This functionality is experimental and requires a binary patch
to be uploaded to the SX126x device. There may be some undocumented
side effects!
For default module settings, see the wiki page
https://github.com/jgromes/RadioLib/wiki/Default-configuration#sx126x---lora-modem
For full API reference, see the GitHub Pages
https://jgromes.github.io/RadioLib/
*/
// #define HELTEC_NO_DISPLAY
#include <Arduino.h>
#include <heltec_unofficial.h>
// This file contains a binary patch for the SX1262
#include "modules/SX126x/patches/SX126x_patch_scan.h"
#include "global_config.h"
#include "ui.h"
// #define OSD_ENABLED true
// #define WIFI_SCANNING_ENABLED true
// #define BT_SCANNING_ENABLED true
#define BT_SCAN_DELAY 60 * 1 * 1000
#define WF_SCAN_DELAY 60 * 2 * 1000
long noDevicesMillis = 0, cycleCnt = 0;
bool present = false;
bool scanFinished = true;
// time to scan BT
#define BT_SCAN_TIME 10
uint64_t wf_start = 0;
uint64_t bt_start = 0;
#define MAX_POWER_LEVELS 33
#ifdef OSD_ENABLED
#include "DFRobot_OSD.h"
#define OSD_SIDE_BAR true
static constexpr uint16_t levels[10] = {
0x105, // 0
0x10E, // 1
0x10D, // 2
0x10C, // 3
0x10B, // 4
0x10A, // 5
0x109, // 6
0x108, // 7
0x107, // 8
0x106, // 9
};
static constexpr uint16_t power_level[MAX_POWER_LEVELS + 1] = {
0x10E, // 0
0x10E, // 1
0x10D, // 2
0x10C, // 3
0x10B, // 4
0x10A, // 5
0x109, // 6
0x108, // 7
0x107, // 8
0x106, // 9 not using 106 to accent rise
// new line
0x10E, // 10
0x10D, // 11
0x10C, // 12
0x10B, // 13
0x10A, // 14
0x109, // 15
0x108, // 16
0x107, // 17
0x106, // 18 not using 106
// new line
0x10E, // 19
0x10D, // 20
0x10C, // 21
0x10B, // 22
0x10A, // 23
0x109, // 24
0x108, // 25
0x107, // 26
0x106, // 27
0x105, // 28 ---
0x105, // 29
0x105, // 30
0x105, // 31
0x105, // 32
0x105 // 33
};
// SPI pins
#define OSD_CS 47
#define OSD_MISO 33
#define OSD_MOSI 34
#define OSD_SCK 26
#endif
#define OSD_WIDTH 30
#define OSD_HEIGHT 16
#define OSD_CHART_WIDTH 15
#define OSD_CHART_HEIGHT 5
#define OSD_X_START 1
#define OSD_Y_START 16
// TODO: Calculate dinammicaly:
// osd_steps = osd_mhz_in_bin / (FM range / LORA radio x Steps)
int osd_mhz_in_bin = 5;
int osd_steps = 12;
int global_counter = 0;
#ifdef OSD_ENABLED
DFRobot_OSD osd(OSD_CS);
#endif
/*Define Custom characters Example*/
static const int buf0[36] = {0x02, 0x80, 0x02, 0x40, 0x7F, 0xE0, 0x42, 0x00,
0x42, 0x00, 0x7A, 0x40, 0x4A, 0x40, 0x4A, 0x80,
0x49, 0x20, 0x5A, 0xA0, 0x44, 0x60, 0x88, 0x20};
// project components
#ifdef WIFI_SCANNING_ENABLED
#include "WiFi.h"
#endif
#ifdef BT_SCANNING_ENABLED
#include <BLEAdvertisedDevice.h>
#include <BLEDevice.h>
#include <BLEScan.h>
#include <BLEUtils.h>
#endif
// -----------------------------------------------------------------
// CONFIGURATION OPTIONS
// -----------------------------------------------------------------
typedef enum
{
METHOD_RSSI = 0u,
METHOD_SPECTRAL
} TSCAN_METOD_ENUM;
#define SCAN_METHOD
#define METHOD_SPECTRAL
// #define METHOD_RSSI // Uncomment this and comment METHOD_SPECTRAL fot RSSI
// Feature to scan diapazones. Other frequency settings will be ignored.
// int SCAN_RANGES[] = {850890, 920950};
int SCAN_RANGES[] = {};
// MHZ per page
// to put everething into one page set RANGE_PER_PAGE = FREQ_END - 800
uint64_t RANGE_PER_PAGE = FREQ_END - FREQ_BEGIN; // FREQ_END - FREQ_BEGIN
// multiplies STEPS * N to increase scan resolution.
#define SCAN_RBW_FACTOR 2
constexpr int OSD_PIXELS_PER_CHAR = (STEPS * SCAN_RBW_FACTOR) / OSD_CHART_WIDTH;
// To Enable Multi Screen scan
// uint64_t RANGE_PER_PAGE = 50;
// Default Range on Menu Button Switch
#define DEFAULT_RANGE_PER_PAGE 50
// Print spectrum values pixels at once or by line
bool ANIMATED_RELOAD = false;
// TODO: Ignore power lines
#define UP_FILTER 5
#define LOW_FILTER 3
// Remove reading without neighbors
#define FILTER_SPECTRUM_RESULTS true
#define FILTER_SAMPLES_MIN
constexpr bool DRAW_DETECTION_TICKS = true;
// Number of samples for each frequency scan. Fewer samples = better temporal resolution.
// if more than 100 it can freez
#define SAMPLES 35 //(scan time = 1294)
// number of samples for RSSI method
#define SAMPLES_RSSI 20 // 21 //
#define RANGE (int)(FREQ_END - FREQ_BEGIN)
#define SINGLE_STEP (float)(RANGE / (STEPS * SCAN_RBW_FACTOR))
uint64_t range = (int)(FREQ_END - FREQ_BEGIN);
uint64_t fr_begin = FREQ_BEGIN;
uint64_t fr_end = FREQ_BEGIN;
uint64_t iterations = RANGE / RANGE_PER_PAGE;
// uint64_t range_frequency = FREQ_END - FREQ_BEGIN;
uint64_t median_frequency = FREQ_BEGIN + FREQ_END - FREQ_BEGIN / 2;
// #define DISABLE_PLOT_CHART false // unused
// Array to store the scan results
uint16_t result[RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE];
uint16_t result_display_set[RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE];
uint16_t result_detections[RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE];
uint16_t filtered_result[RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE];
int max_bins_array_value[MAX_POWER_LEVELS];
int max_step_range = 32;
// Waterfall array
bool waterfall[STEPS], detected_y[STEPS]; // 20 - ??? steps of the waterfall
// global variable
// Used as a Led Light and Buzzer/count trigger
bool first_run, new_pixel, detected_x = false;
// drone detection flag
bool detected = false;
uint64_t drone_detection_level = DEFAULT_DRONE_DETECTION_LEVEL;
uint64_t drone_detected_frequency_start = 0;
uint64_t drone_detected_frequency_end = 0;
uint64_t detection_count = 0;
bool single_page_scan = false;
bool SOUND_ON = false;
// #define PRINT_DEBUG
#define PRINT_PROFILE_TIME
#ifdef PRINT_PROFILE_TIME
uint64_t loop_start = 0;
uint64_t loop_time = 0;
uint64_t scan_time = 0;
uint64_t scan_start_time = 0;
#endif
uint64_t x, y, range_item, w = WATERFALL_START, i = 0;
int osd_x = 1, osd_y = 2, col = 0, max_bin = 32;
uint64_t ranges_count = 0;
float freq = 0;
int rssi = 0;
int state = 0;
#ifdef METHOD_SPECTRAL
constexpr int samples = SAMPLES;
#endif
#ifdef METHOD_RSSI
constexpr int samples = SAMPLES_RSSI;
#endif
uint8_t result_index = 0;
uint8_t button_pressed_counter = 0;
uint64_t loop_cnt = 0;
#ifdef WIFI_SCANNING_ENABLED
// WiFi Scan
// TODO: Make Async Scan
// https://arduino-esp8266.readthedocs.io/en/latest/esp8266wifi/scan-examples.html#async-scan
void scanWiFi()
{
osd.clear();
osd.displayString(14, 2, "Scanning WiFi..");
int n = WiFi.scanNetworks();
#ifdef PRINT_DEBUG
Serial.println("scan done");
if (n == 0)
{
Serial.println("no networks found");
}
#endif
if (n > 0)
{
#ifdef PRINT_DEBUG
Serial.print(n);
Serial.println(" networks found");
#endif
for (int i = 0; i < n; ++i)
{
// Print SSID and RSSI for each network found
#ifdef PRINT_DEBUG
Serial.print(i + 1);
Serial.print(": ");
Serial.print(WiFi.SSID(i));
Serial.print(" (");
Serial.print(WiFi.RSSI(i));
Serial.print(")");
Serial.println((WiFi.encryptionType(i) == WIFI_AUTH_OPEN) ? " " : "*");
#endif
osd.displayString(i + 1, 1,
"WF:" + String((WiFi.SSID(i) + ":" + WiFi.RSSI(i))));
}
}
osd.displayChar(14, 1, 0x10f);
}
#endif
#ifdef BT_SCANNING_ENABLED
//**********************
// BLE devices scan.
//***********************
// TODO: Make Async Scan
// https://github.com/nkolban/esp32-snippets/blob/master/cpp_utils/tests/BLETests/SampleAsyncScan.cpp
void scanBT()
{
osd.clear();
osd.displayString(14, 2, "Scanning BT...");
cycleCnt++;
BLEDevice::init("");
BLEScan *pBLEScan = BLEDevice::getScan();
// active scan uses more power, but get results faster
pBLEScan->setActiveScan(true);
// TODO: adjust interval and window
pBLEScan->setInterval(0x50);
pBLEScan->setWindow(0x30);
#ifdef SERIAL_PRINT
Serial.printf("Start BLE scan for %d seconds...\n", BT_SCAN_TIME);
#endif
BLEScanResults foundDevices = pBLEScan->start(BT_SCAN_TIME);
int count = foundDevices.getCount();
#ifdef PRINT_DEBUG
Serial.printf("Found devices: %d \n", count);
#endif
present = false;
for (int i = 0; i < count; i++)
{
BLEAdvertisedDevice device = foundDevices.getDevice(i);
String currDevAddr = device.getAddress().toString().c_str();
String deviceName;
if (device.haveName())
{
deviceName = device.getName().c_str();
}
else
{
deviceName = currDevAddr;
}
#ifdef PRINT_DEBUG
Serial.printf("Found device #%s/%s with RSSI: %d \n", currDevAddr, deviceName,
device.getRSSI());
#endif
osd.displayString(i + 1, 1,
"BT:" + deviceName + ":" + String(device.getRSSI()) + " \n");
}
#ifdef PRINT_DEBUG
Serial.println("Scan done!");
Serial.printf("Cycle counter: %d, Free heap: %d \n", cycleCnt, ESP.getFreeHeap());
#endif
osd.displayChar(14, 1, 0x10f);
scanFinished = true;
}
#endif
#ifdef OSD_ENABLED
unsigned short selectFreqChar(int bin, int start_level = 0)
{
if (bin >= start_level)
{
// level when we are starting show levels symbols
// you can override with your own character for example 0x100 = " " empty char
return power_level[33];
}
else if (bin >= 0 && bin < MAX_POWER_LEVELS)
return power_level[bin];
// when wrong bin number or noc har assigned we are showing "!" char
return 0x121;
}
void osdPrintSignalLevelChart(int col, int signal_value)
{
// Third line
if (signal_value <= 9 && signal_value <= drone_detection_level)
{
osd.displayChar(13, col + 2, 0x100);
osd.displayChar(14, col + 2, 0x100);
osd.displayChar(12, col + 2, selectFreqChar(signal_value, drone_detection_level));
}
// Second line
else if (signal_value < 19 && signal_value <= drone_detection_level)
{
osd.displayChar(12, col + 2, 0x100);
osd.displayChar(14, col + 2, 0x100);
osd.displayChar(13, col + 2, selectFreqChar(signal_value, drone_detection_level));
}
// First line
else
{
// Clean Up symbol
osd.displayChar(12, col + 2, 0x100);
osd.displayChar(13, col + 2, 0x100);
osd.displayChar(14, col + 2, selectFreqChar(signal_value, drone_detection_level));
}
}
void osdProcess()
{ // OSD enabled
// memset(max_step_range, 33, 30);
max_bin = 32;
osd.displayString(12, 1, String(FREQ_BEGIN));
osd.displayString(12, OSD_WIDTH - 8, String(FREQ_END));
// Finding biggest in result
// Skiping 0 and 32 31 to avoid overflow
for (int i = 1; i < MAX_POWER_LEVELS - 3; i++)
{
// filter
if (result[i] > 0
#if FILTER_SPECTRUM_RESULTS
&& ((result[i + 1] != 0 /*&& result[i + 2] != 0*/) || result[i - 1] != 0)
#endif
)
{
max_bin = i;
#ifdef PRINT_DEBUG
Serial.print("MAX in bin:" + String(max_bin));
Serial.println();
#endif
break;
}
}
// max_bin contains fist not 0 index of the bin
if (max_step_range > max_bin && max_bin != 0)
{
max_step_range = max_bin;
// Store RSSI value for RSSI Method
#ifdef METHOD_RSSI
max_bins_array_value[col] = result[max_bin];
#endif
}
// Going to the next OSD step
if (x % osd_steps == 0 && col < OSD_WIDTH)
{
// OSD SIDE BAR with frequency log
#ifdef OSD_SIDE_BAR
{
osd.displayString(col, OSD_WIDTH - 7,
String(FREQ_BEGIN + (col * osd_mhz_in_bin)) + "-" +
String(max_step_range) + " ");
}
#endif
// Test with Random Result...
// max_step_range = rand() % 32;
#ifdef METHOD_RSSI
// With THe RSSI method we can get real RSSI value not just a bin
#endif
// PRINT SIGNAL CHAR ROW, COL, VALUE
osdPrintSignalLevelChart(col, max_step_range);
#ifdef PRINT_DEBUG
Serial.println("MAX:" + String(max_step_range));
#endif
max_step_range = 32;
col++;
}
}
#endif
void init_radio()
{
// initialize SX1262 FSK modem at the initial frequency
both.println("Init radio");
RADIOLIB_OR_HALT(radio.beginFSK(FREQ_BEGIN));
// upload a patch to the SX1262 to enable spectral scan
// NOTE: this patch is uploaded into volatile memory,
// and must be re-uploaded on every power up
both.println("Upload SX1262 patch");
// Upload binary patch into the SX126x device RAM. Patch is needed to e.g.,
// enable spectral scan and must be uploaded again on every power cycle.
RADIOLIB_OR_HALT(radio.uploadPatch(sx126x_patch_scan, sizeof(sx126x_patch_scan)));
// configure scan bandwidth and disable the data shaping
both.println("Setting up radio");
RADIOLIB_OR_HALT(radio.setRxBandwidth(BANDWIDTH));
// and disable the data shaping
RADIOLIB_OR_HALT(radio.setDataShaping(RADIOLIB_SHAPING_NONE));
both.println("Starting scanning...");
// calibrate only once ,,, at startup
// TODO: check documentation (9.2.1) if we must calibrate in certain ranges
radio.setFrequency(FREQ_BEGIN, true);
delay(50);
}
void setup(void)
{
// LED brightness
heltec_led(25);
#ifdef OSD_ENABLED
osd.init(OSD_SCK, OSD_MISO, OSD_MOSI);
osd.clear();
/* Write the custom character to the OSD, replacing the original character*/
/* Expand 0xe0 to 0x0e0, the high 8 bits indicate page number and the low 8 bits
* indicate the inpage address.*/
osd.storeChar(0xe0, buf0);
// Display Satellite icon in the left bottom corner
osd.displayChar(14, 1, 0x10f);
/*display String*/
osd.displayString(14, 15, " Lora SA");
osd.displayString(2, 1, " Spectral RF Analyzer");
#endif
float vbat;
float resolution;
loop_cnt = 0;
bt_start = millis();
wf_start = millis();
pinMode(LED, OUTPUT);
pinMode(BUZZER_PIN, OUTPUT);
pinMode(REB_PIN, OUTPUT);
heltec_setup();
UI_Init(&display);
for (int i = 0; i < 200; i++)
{
button.update();
delay(10);
if (button.pressed())
{
SOUND_ON = !SOUND_ON;
tone(BUZZER_PIN, 205, 100);
delay(50);
tone(BUZZER_PIN, 205, 100);
break;
}
}
init_radio();
vbat = heltec_vbat();
both.printf("V battery: %.2fV (%d%%)\n", vbat, heltec_battery_percent(vbat));
#ifdef WIFI_SCANNING_ENABLED
WiFi.mode(WIFI_STA);
WiFi.disconnect();
#endif
#ifdef BT_SCANNING_ENABLED
#endif
delay(400);
display.clear();
resolution = RANGE / (STEPS * SCAN_RBW_FACTOR);
single_page_scan = (RANGE_PER_PAGE == range);
#ifdef DISABLED_CODE
// Adjust range if it is not even to RANGE_PER_PAGE
if (!single_page_scan && range % RANGE_PER_PAGE != 0)
{
range = range + range % RANGE_PER_PAGE;
}
#endif
if (single_page_scan)
{
both.println("Single Page Screen MODE");
both.println("Multi Screen View Press P - button");
both.println("Multi Screan Res: " + String(resolution) + "Mhz/tick");
both.println(
"Resolution: " + String((float)RANGE_PER_PAGE / (STEPS * SCAN_RBW_FACTOR)) +
"MHz/tick");
for (int i = 0; i < 500; i++)
{
button.update();
delay(5);
both.print(".");
if (button.pressed())
{
RANGE_PER_PAGE = DEFAULT_RANGE_PER_PAGE;
single_page_scan = false;
tone(BUZZER_PIN, 205, 100);
delay(50);
tone(BUZZER_PIN, 205, 100);
break;
}
}
}
else
{
both.println("Multi Page Screen MODE");
both.println("Single screen View Press P - button");
both.println("Single screen Resol: " + String(resolution) + "Mhz/tick");
both.println(
"Resolution: " + String((float)RANGE_PER_PAGE / (STEPS * SCAN_RBW_FACTOR)) +
"Mhz/tick");
for (int i = 0; i < 500; i++)
{
button.update();
delay(10);
both.print(".");
if (button.pressed())
{
RANGE_PER_PAGE = range;
single_page_scan = true;
tone(BUZZER_PIN, 205, 100);
break;
}
}
}
display.clear();
Serial.println();
#ifdef METHOD_RSSI
// TODO: try RADIOLIB_SX126X_RX_TIMEOUT_INF
state = radio.startReceive(RADIOLIB_SX126X_RX_TIMEOUT_NONE);
if (state != RADIOLIB_ERR_NONE)
{
Serial.print(F("Failed to start receive mode, error code: "));
Serial.println(state);
}
#endif
// waterfall start line y-axis
w = WATERFALL_START;
#ifdef OSD_ENABLED
osd.clear();
#endif
}
// Formula to translate 33 bin to aproximate RSSI value
int binToRSSI(int bin)
{
// the first the strongest RSSI in bin value is 0
return 11 + (bin * 4);
}
void loop(void)
{
UI_displayDecorate(0, 0, false); // some default values
detection_count = 0;
drone_detected_frequency_start = 0;
ranges_count = 0;
// reset scan time
scan_time = 0;
// general purpose loop conter
loop_cnt++;
#ifdef PRINT_PROFILE_TIME
loop_start = millis();
#endif
if (!ANIMATED_RELOAD || !single_page_scan)
{
// clear the scan plot rectangle
UI_clearPlotter();
}
// do the scan
range = FREQ_END - FREQ_BEGIN;
if (RANGE_PER_PAGE > range)
{
RANGE_PER_PAGE = range;
}
fr_begin = FREQ_BEGIN;
fr_end = fr_begin;
// 50 is a single-screen range
// TODO: Make 50 a variable with the option to show the full range
iterations = range / RANGE_PER_PAGE;
#if 0 // disabled code
if (range % RANGE_PER_PAGE != 0)
{
// add more scan
//++;
}
#endif
if (RANGE_PER_PAGE == range)
{
single_page_scan = true;
}
else
{
single_page_scan = false;
}
for (int range : SCAN_RANGES)
{
ranges_count++;
}
if (ranges_count > 0)
{
iterations = ranges_count;
single_page_scan = false;
}
// Iterating by small ranges by 50 Mhz each pixel is 0.4 Mhz
for (range_item = 0; range_item < iterations; range_item++)
{
range = RANGE_PER_PAGE;
if (ranges_count == 0)
{
fr_begin = (range_item == 0) ? fr_begin : fr_begin += range;
fr_end = fr_begin + RANGE_PER_PAGE;
}
else
{
fr_begin = SCAN_RANGES[range_item] / 1000;
fr_end = SCAN_RANGES[range_item] % 1000;
range = fr_end - fr_begin;
}
#ifdef DISABLED_CODE
if (!ANIMATED_RELOAD || !single_page_scan)
{
// clear the scan plot rectangle
UI_clearPlotter();
}
#endif
if (single_page_scan == false)
{
UI_displayDecorate(fr_begin, fr_end, true);
}
drone_detected_frequency_start = 0;
display.setTextAlignment(TEXT_ALIGN_RIGHT);
for (int i = 0; i < MAX_POWER_LEVELS; i++)
{
max_bins_array_value[i] = 0;
}
// horizontal (x axis) Frequency loop
osd_x = 1, osd_y = 2, col = 0, max_bin = 0;
// x loop
for (x = 0; x < STEPS * SCAN_RBW_FACTOR; x++)
{
if (x % SCAN_RBW_FACTOR == 0)
new_pixel = true;
else
new_pixel = false;
if (ANIMATED_RELOAD && SCAN_RBW_FACTOR == 1)
{
UI_drawCursor(x);
}
if (new_pixel && ANIMATED_RELOAD && SCAN_RBW_FACTOR > 1)
{
UI_drawCursor((int)(x / SCAN_RBW_FACTOR));
}
#ifdef PRINT_PROFILE_TIME
scan_start_time = millis();
#endif
// Real display pixel x - axis.
// Because of the SCAN_RBW_FACTOR x is not a display coordinate anymore
// x > STEPS on SCAN_RBW_FACTOR
int dispaly_x = x / SCAN_RBW_FACTOR;
waterfall[dispaly_x] = false;
float step = (range * ((float)x / (STEPS * SCAN_RBW_FACTOR)));
freq = fr_begin + step;
radio.setFrequency(freq, false); // false = no calibration need here
#ifdef PRINT_DEBUG
Serial.printf("Step:%d Freq: %f\n", x, freq);
#endif
// SpectralScan Method
#ifdef METHOD_SPECTRAL
{
// start spectral scan third parameter is a sleep interval
radio.spectralScanStart(SAMPLES, 1);
// wait for spectral scan to finish
while (radio.spectralScanGetStatus() != RADIOLIB_ERR_NONE)
{
Serial.print("radio.spectralScanGetStatus ERROR: ");
Serial.println(radio.spectralScanGetStatus());
heltec_delay(ONE_MILLISEC * 10);
}
// read the results Array to which the results will be saved
radio.spectralScanGetResult(result);
}
#endif
#ifdef METHOD_RSSI
// Spectrum analyzer using getRSSI
{
#ifdef PRINT_DEBUG
Serial.println("METHOD RSSI");
#endif
// memset
// memset(result, 0, RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE);
// Some issues with memset function
for (i = 0; i < RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE; i++)
{
result[i] = 0;
}
result_index = 0;
// N of samples
for (int r = 0; r < SAMPLES_RSSI; r++)
{
rssi = radio.getRSSI(false);
// delay(ONE_MILLISEC);
// ToDO: check if 4 is correct value for 33 power bins
result_index = uint8_t(abs(rssi) / 4); /// still not clear formula
#ifdef PRINT_DEBUG
Serial.printf("RSSI: %d IDX: %d\n", rssi, result_index);
#endif
// avoid buffer overflow
if (result_index < RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE)
{
// Saving max value only rss is negative so smaller is bigger
if (result[result_index] > rssi)
{
result[result_index] = rssi;
}
}
else
{
Serial.print("Out-of-Range: result_index %d\n");
}
}
}
#endif // SCAN_METHOD == METHOD_RSSI
// if this code is not executed LORA radio doesn't work
// basicaly SX1262 requers delay
// osd.displayString(12, 1, String(FREQ_BEGIN));
// osd.displayString(12, 30 - 8, String(FREQ_END));
// delay(2);
#ifdef OSD_ENABLED
osdProcess();
#endif
detected = false;
detected_y[dispaly_x] = false;
for (y = 0; y < RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE; y++)
{
#ifdef PRINT_DEBUG
Serial.print(String(y) + ":");
Serial.print(String(result[y]) + ",");
#endif
#if !defined(FILTER_SPECTRUM_RESULTS) || FILTER_SPECTRUM_RESULTS == false
if (result[y] && result[y] != 0)
{
filtered_result[y] = 1;
}
else
{
filtered_result[y] = 0;
}
#endif
// if samples low ~1 filter removes all values
#if FILTER_SPECTRUM_RESULTS
filtered_result[y] = 0;
// Filter Elements without neighbors
// if RSSI method actual value is -xxx dB
if (result[y] > 0 && samples > 1)
{
// do not process 'first' and 'last' row to avoid out of index
// access.
if ((y > 0) && (y != (RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE - 3)))
{
if (((result[y + 1] != 0) && (result[y + 2] != 0)) ||
(result[y - 1] != 0))
{
filtered_result[y] = 1;
}
else
{
#ifdef PRINT_DEBUG
Serial.print("Filtered:" + String(x) + ":" + String(y) + ",");
#endif
}
}
} // not filtering if samples == 1
else if (result[y] > 0 && samples == 1)
{
filtered_result[y] = 1;
}
#endif
// check if we should alarm about a drone presence
if ((filtered_result[y] == 1) // we have some data and
&& (y <= drone_detection_level) &&
detected_y[dispaly_x] == false) // detection threshold match
{
// Set LED to ON (filtered in UI component)
UI_setLedFlag(true);
#if (WATERFALL_ENABLED == true)
if (single_page_scan)
{
// Drone detection true for waterfall
if (!waterfall[dispaly_x])
{
waterfall[dispaly_x] = true;
display.setColor(WHITE);
display.setPixel(dispaly_x, w);
}
}
#endif
if (drone_detected_frequency_start == 0)
{
// mark freq start
drone_detected_frequency_start = freq;
}
// mark freq end ... will shift right to last detected range
drone_detected_frequency_end = freq;
// If level is set to sensitive,
// start beeping every 10th frequency and shorter
// it improves performance less short beep delays...
if (drone_detection_level <= 25)
{
if (detection_count == 1 && SOUND_ON)
{
tone(BUZZER_PIN, 205,
10); // same action ??? but first time
}
if (detection_count % 5 == 0 && SOUND_ON)
{
tone(BUZZER_PIN, 205,
10); // same action ??? but everey 5th time
}
}
else
{
if (detection_count % 20 == 0 && SOUND_ON)
{
tone(BUZZER_PIN, 205,
10); // same action ??? but everey 20th detection
}
}
if (DRAW_DETECTION_TICKS == true)
{
// draw vertical line on top of display for "drone detected"
// frequencies
if (!detected_y[dispaly_x])
{
display.drawLine(dispaly_x, 1, dispaly_x, 6);
detected_y[dispaly_x] = true;
}
}
}
#if (WATERFALL_ENABLED == true)
if ((filtered_result[y] == 1) && (y <= drone_detection_level) &&
(single_page_scan) && (waterfall[dispaly_x] != true) && new_pixel)
{
// If drone not found set dark pixel on the waterfall
// TODO: make something like scrolling up if possible
waterfall[dispaly_x] = false;
display.setColor(BLACK);
display.setPixel(dispaly_x, w);
display.setColor(WHITE);
}
#endif
#if 0
#endif // If 0
// next 2 If's ... adds !!!! 10ms of runtime ......tfk ???
if (filtered_result[y] == 1)
{
#ifdef PRINT_DEBUG
Serial.print("Pixel:" + String(dispaly_x) + "(" + String(x) + ")" +
":" + String(y) + ",");
#endif
// Set signal level pixel
display.setPixel(dispaly_x, y);
if (!detected)
{
detected = true;
}
}
// -------------------------------------------------------------
// Draw "Detection Level line" every 2 pixel
// -------------------------------------------------------------
if ((y == drone_detection_level) && (dispaly_x % 2 == 0))
{
display.setColor(WHITE);
if (filtered_result[y] == 1)
{
display.setColor(INVERSE);
}
display.setPixel(dispaly_x, y);
display.setPixel(dispaly_x, y - 1); // 2 px wide
display.setColor(WHITE);
}
}
#ifdef PRINT_PROFILE_TIME
scan_time += (millis() - scan_start_time);
#endif
// count detected
if (detected)
{
detection_count++;
}
#ifdef PRINT_DEBUG
Serial.println("....\n");
#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 drone detection level 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...
int delay_cnt = 1;
while (radio.spectralScanGetStatus() != RADIOLIB_ERR_NONE)
{
if (delay_cnt == 1)
{
// trying to use display as delay..
display.display();
}
else
{
heltec_delay(ONE_MILLISEC * 2);
}
Serial.println("spectralScanGetStatus ERROR(" +
String(radio.spectralScanGetStatus()) +
") hard delay(2) - " + String(delay_cnt));
// if error than speed is slow animating chart
ANIMATED_RELOAD = true;
delay_cnt++;
}
// TODO: move osd logic here as a dalay ;)
// Loop is needed if heltec_delay(1) not used
heltec_loop();
}
w++;
if (w > ROW_STATUS_TEXT + 1)
{
w = WATERFALL_START;
}
#if (WATERFALL_ENABLED == true)
// Draw waterfall position cursor
if (single_page_scan)
{
display.setColor(BLACK);
display.drawHorizontalLine(0, w, STEPS);
display.setColor(WHITE);
}
#endif
// Render display data here
display.display();
#ifdef OSD_ENABLED
// Sometimes OSD prints entire screan with the digits.
// We need clean the screan to fix it.
// We can do it every time but to optimise doing every N times
if (global_counter != 0 && global_counter % 10 == 0)
{
#if !defined(BT_SCANNING_ENABLED) && !defined(WIFI_SCANNING_ENABLED)
osd.clear();
osd.displayChar(14, 1, 0x10f);
global_counter = 0;
#endif
}
ANIMATED_RELOAD = false;
global_counter++;
#endif
}
#ifdef PRINT_DEBUG
// Serial.println("----");
#endif
loop_time = millis() - loop_start;
#ifdef PRINT_PROFILE_TIME
Serial.printf("LOOP: %lld ms; SCAN: %lld ms;\n ", loop_time, scan_time);
#endif
// No WiFi and BT Scan Without OSD
#ifdef OSD_ENABLED
#ifdef WIFI_SCANNING_ENABLED
if ((millis() - wf_start) > WF_SCAN_DELAY)
{
scanWiFi();
wf_start = millis();
// prevent BT scanning after scanning WF
bt_start = millis();
}
#endif
#ifdef BT_SCANNING_ENABLED
if ((millis() - bt_start) > BT_SCAN_DELAY)
{
scanBT();
bt_start = millis();
}
#endif
#endif
}
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