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54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
#include <cstdint>
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#include <stdlib.h>
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#ifndef LORASA_CORE_H
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#define LORASA_CORE_H
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#ifdef PRINT_DEBUG
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#define LOG(args...) Serial.printf(args...)
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#define LOG_IF(cond, args...) \
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if (cond) \
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LOG(args...)
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#elif !defined(LOG)
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#define LOG(args...)
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#define LOG_IF(cond, args...)
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#endif
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// Output Pixel Formula
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// 1 = rssi / 4, 2 = (rssi / 2) - 22 or 20
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constexpr int RSSI_OUTPUT_FORMULA = 2;
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// based on the formula for RSSI_OUTPUT_FORMULA == 2
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// -2 * (22 + RADIOLIB_SX126X_SPECTRAL_SCAN_RES_SIZE) < rssi =< -44
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// practice may require a better pair of thresholds
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constexpr float HI_RSSI_THRESHOLD = -44.0;
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constexpr float LO_RSSI_THRESHOLD = HI_RSSI_THRESHOLD - 66;
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// number of samples for RSSI method
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#define SAMPLES_RSSI 12 // 21 //
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#ifdef USING_SX1280PA
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#define SAMPLES_RSSI 20
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#endif
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struct Scan
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{
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virtual float getRSSI() = 0;
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// rssiMethod gets the data similar to the scan method,
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// but uses getRSSI directly.
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uint16_t rssiMethod(size_t samples, uint16_t *result, size_t res_size);
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// detect method analyses result, and produces filtered_result, marking
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// those values that represent a detection event.
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// It returns index that represents strongest signal at which a detection event
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// occurred.
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static size_t detect(uint16_t *result, bool *filtered_result, size_t result_size,
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int samples);
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};
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// Remove reading without neighbors
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#define FILTER_SPECTRUM_RESULTS true
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#endif
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