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70 lines
1.2 KiB
C++
70 lines
1.2 KiB
C++
//
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// FILE: fastMapDemo.ino
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.02
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// PURPOSE: demo of FastMap class ==> a faster map function
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// DATE: 2014-11-02
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// URL:
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//
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// Released to the public domain
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//
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#include "FastMap.h"
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uint32_t start;
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uint32_t stop;
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uint32_t reference;
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volatile long zz = 3000, yy = 20000;
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volatile float x;
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FastMap mapper;
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void setup()
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{
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Serial.begin(115200);
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Serial.print("Start fastMapDemo\nlib version: ");
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Serial.println(FASTMAP_LIB_VERSION);
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Serial.println();
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// Get a non optimizable value;
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int z = analogRead(A0);
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// REFERENCE
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start = micros();
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for (int i = 0; i < 10000; i++)
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{
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x = map(z, 0, 1023, yy, zz);
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}
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stop = micros();
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reference = stop-start;
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Serial.println(reference);
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Serial.print(z);
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Serial.print(" -> ");
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Serial.println(x);
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Serial.println();
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// FASTMAP
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mapper.init(0, 1023, yy, zz);
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start = micros();
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for (int i = 0; i < 10000; i++)
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{
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x = mapper.map(z);
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}
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stop = micros();
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Serial.println(stop-start);
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Serial.print(z);
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Serial.print(" -> ");
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Serial.println(x);
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// GAIN
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Serial.print("Performance factor: ");
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Serial.println(reference/(stop-start));
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}
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void loop()
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{
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}
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//
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// END OF FILE
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//
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