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This library allows you to log data to an Arduino. It supports Serial logging to the Arduino/ESP serial port.

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kbeaugrand-org/Arduino-Logging-Library

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Arduino logging library

This library allows you to log data to an Arduino. It supports Serial logging to the Arduino/ESP serial port.

printf format support

This library supports printf format strings.

e.g. %[flags][width][.precision][length]specifier

  • specifier
    specifier Output **Example **
    d or i Signed decimal integer 392
    u Unsigned decimal integer 7235
    o Unsigned octal 610
    x Unsigned hexadecimal integer 7fa
    X Unsigned hexadecimal integer (uppercase) 7FA
    f Decimal floating point, lowercase 392.65
    F Decimal floating point, uppercase 392.65
    e Scientific notation (mantissa/exponent), lowercase 3.9265e+2
    E Scientific notation (mantissa/exponent), uppercase 3.9265E+2
    g Use the shortest representation: %e or %f 392.65
    G Use the shortest representation: %E or %F 392.65
    a Hexadecimal floating point, lowercase -0xc.90fep-2
    A Hexadecimal floating point, uppercase -0XC.90FEP-2
    c Character a
    s String of characters sample
    p Pointer address b8000000
    n Nothing printed. The corresponding argument must be a pointer to a signed int. The number of characters written so far is stored in the pointed location.

see: https://cplusplus.com/reference/cstdio/printf/ for more details.

Usage

#include <Arduino.h>
#include <logging.h>

Logging logging;

void setup() {
  logging.begin(9600);
}

void loop() {
  LogTrace("Hello world!");
  LogDebug("Debug message for %d integers", 42);
  LogInfo("Info message for %d integers", 42);
  LogWarn("Info message for %d integers", 42);
  LogErr("This is an error message");
  delay(1000);
}

Support

Tested on:

  • Arduino Uno
  • Expressif ESP8266

License

MIT

Author

@kbeaugrand

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This library allows you to log data to an Arduino. It supports Serial logging to the Arduino/ESP serial port.

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