passing flash string param to a functiom

Using Arduino Programming Questions
#1

Hello,

I am trying to replace all my Serial.print… used mainly for debugging by a call to a function which will be given also the verbosity level at which the text should be printed

instead of if(verbosity>2)Serial.print(“bla bla”), simply report("bla bla, 2);

with some function
report(char* text, int level) if (level>verbosity) Serial.print(text);

Can someone tell how to do this?
Thanks
[edit] and of course all these strings I need to print should be in program memory as
Serial.print(F(“bla bla”)) to save ram space

#2

The thread title does not seem to match your code or description. Can you please clarify where flash strings come into it ?

#3

Oops
Yes, strings should be in flash. Otherwise no problem

#4

Well, I'm not sure why you need to pass flash strings to a function, but this is how you do it:

const char PROGMEM test_text[] = "test_text";

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

}

void loop()
{
  test_function(test_text);
  test_function((PGM_P)F("test_text_2"));
}

void test_function(PGM_P pgm_string)
{
  char this_char;

  do
  {
    this_char = pgm_read_byte(pgm_string++);
    Serial.print(this_char);
  } while (this_char != '\0');
  Serial.println();

  return;
}
#5

fabulous!

btw, 115200 is much above the capacity of my hw :slightly_frowning_face:

#6

You could use something like

void fPrint(const __FlashStringHelper* pmChars)
{
  Serial.println(pmChars);
}
void setup()
{
  Serial.begin(115200);
  fPrint(F("from Flash"));
}
void loop() {}
#7

@Whandall: Thank you. I created a "report" function using your code, It works perfectly, saves me many tests and time printing and saves ram. Thank you

#8