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- MeshCore-based Simple Sensor firmware - Heltec T114 without display - BME280 sensor support (temp/humidity/pressure) - Radio: 868.856018 MHz, SF7, BW62.5 kHz, CR4/7 - 2-byte path hash - PlatformIO project
46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
#include "TimeSeriesData.h"
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void TimeSeriesData::recordData(mesh::RTCClock* clock, float value) {
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uint32_t now = clock->getCurrentTime();
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if (now >= last_timestamp + interval_secs) {
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last_timestamp = now;
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data[next] = value; // append to cycle table
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next = (next + 1) % num_slots;
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}
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}
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void TimeSeriesData::calcMinMaxAvg(mesh::RTCClock* clock, uint32_t start_secs_ago, uint32_t end_secs_ago, MinMaxAvg* dest, uint8_t channel, uint8_t lpp_type) const {
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int i = next, n = num_slots;
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uint32_t ago = clock->getCurrentTime() - last_timestamp;
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int num_values = 0;
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float total = 0.0f;
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dest->_channel = channel;
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dest->_lpp_type = lpp_type;
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// start at most recet recording, back-track through to oldest
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while (n > 0) {
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n--;
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i = (i + num_slots - 1) % num_slots; // go back by one
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if (ago >= end_secs_ago && ago < start_secs_ago) { // filter by the desired time range
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float v = data[i];
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num_values++;
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total += v;
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if (num_values == 1) {
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dest->_max = dest->_min = v;
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} else {
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if (v < dest->_min) dest->_min = v;
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if (v > dest->_max) dest->_max = v;
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}
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}
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ago += interval_secs;
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}
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// calc average
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if (num_values > 0) {
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dest->_avg = total / num_values;
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} else {
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dest->_max = dest->_min = dest->_avg = NAN;
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}
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}
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