GY-63_MS5611/libraries/Histogram/examples/hist_test/hist_test.ino
2021-11-04 12:32:04 +01:00

96 lines
2.1 KiB
C++

//
// FILE: hist_test.ino
// AUTHOR: Rob Tillaart
// VERSION: 0.1.1
// DATE: 2012-12-23
//
// PUPROSE: test histogram frequency
//
#include "histogram.h"
// float b[] = { 0, 100, 200, 300, 325, 350, 375, 400, 500, 600, 700, 800, 900, 1000 };
// boundaries does not need to be equally distributed.
float b[] = {
0, 100, 200, 300, 325, 350, 375 };
Histogram hist(7, b);
uint32_t lastTime = 0;
const uint32_t threshold = 25; // milliseconds, for updating display
void setup()
{
Serial.begin(115200);
Serial.println(__FILE__);
Serial.print("\nHistogram version: ");
Serial.println(HISTOGRAM_LIB_VERSION);
Serial.print("# buckets: ");
Serial.println(hist.size());
for (int i = 0; i < hist.size()-1; i++)
{
Serial.print("\t");
Serial.print(b[i], 2);
}
Serial.println();
for (int i = 0; i < hist.size()-1; i++)
{
Serial.print("\t");
Serial.print(hist.find(b[i]));
}
Serial.println();
}
void loop()
{
// choose a "generator" for histogram data
// int x = analogRead(A0);
int x = random(600) - 50; // below lower limit
// int x = random(25);
// x = x*x;
// Serial.print(x);
// Serial.print("\t");
// Serial.println(hist.find(x));
hist.add(x);
// update output
uint32_t now = millis();
if (now - lastTime > threshold)
{
lastTime = now;
Serial.print(hist.count());
for (int i = 0; i < hist.size(); i++)
{
Serial.print("\t");
// gives percentage per bucket
// Serial.print(hist.bucket(i));
Serial.print(hist.frequency(i), 2);
}
// quartiles
// to get at least 25% of the values you must count all values < hist.VAL(0.25);
Serial.print("\t");
Serial.print(hist.VAL(0.25), 2);
// to get at least 50% of the values you must count all values < hist.VAL(0.50);
Serial.print("\t");
Serial.print(hist.VAL(0.50), 2);
Serial.print("\t");
Serial.print(hist.VAL(0.75), 2);
Serial.print("\t");
Serial.print(hist.VAL(1.0), 2);
Serial.println();
if (hist.count() > 10000UL) hist.clear();
}
}
// -- END OF FILE --