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https://github.com/RobTillaart/Arduino.git
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52 lines
872 B
Arduino
52 lines
872 B
Arduino
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// FILE: luhn_check.ino
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// AUTHOR: Rob Tillaart
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// DATE: 2022-12-24
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// PURPOSE: demo
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// URL: https://github.com/RobTillaart/LUHN
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#include "Arduino.h"
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#include "LUHN.h"
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uint32_t start, stop;
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LUHN checker;
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// example https://en.wikipedia.org/wiki/Luhn_algorithm
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char cardNumber[20] = "79927398713";
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void setup()
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{
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Serial.begin(115200);
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while (!Serial);
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Serial.println();
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Serial.println(__FILE__);
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// SHOULD PRINT 3
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Serial.println(checker.generateChecksum((char *)"7992739871"));
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}
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void loop()
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{
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char buffer[50] = "";
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int len = 0;
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Serial.println("give string");
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while (buffer[len - 1] != '\n')
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{
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if (Serial.available())
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{
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buffer[len++] = Serial.read();
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buffer[len] = '\0';
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}
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}
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Serial.print(buffer);
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Serial.print(" ==> ");
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Serial.println(checker.generateChecksum(buffer));
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}
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// -- END OF FILE --
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