Arduino printf test

printf_test.ino

#include <stdarg.h>

// Makeshift printf for the Serial terminal
void aprintf(const char *format, ...) {
    static char print_buf[1024] = { 0 };

    va_list args;
    va_start(args, format);
    int r = vsnprintf(print_buf, sizeof(print_buf), format, args);
    va_end(args);

    if (r > 0) {
        Serial.write(print_buf);
    }
}

void setup() {
  Serial.begin(115200);
}

void loop() {
  static int i = 0;
  aprintf("Hello %i times\r\n", i);
  i++;
  delay(1000);
}