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.
#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);
}Tested on:
- Arduino Uno
- Expressif ESP8266
MIT