error: ?map? was not declared in this scope

Forum 2005-2010 (read only) Software Syntax & Programs
1

Hi everyone, hope you can help.

I'm trying to use the map function in the following code:

int val1;

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

void loop() {
  val1 = analogRead(1);
  val1 = map(val1, 0, 1023, 0, 255);
  Serial.println(val1);
  delay(200);
}

But when compiling I get this error:

In function 'void loop()':
error: 'map' was not declared in this scope

I'm stumped.

Thanks in advance, Easty.

2

What version of the Arduino software are you using? map() was added recently.

3

I got the same error.
I have the version 11 of the software, so it should be there.

It's not like it's a big deal, but it's weird.

4

Curious.

In your Arduino/hardware/cores/arduino/WProgram.h, do you have the following:

#ifdef __cplusplus
#include "HardwareSerial.h"

unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeout = 1000000L);

// WMath prototypes
long random(long);
long random(long, long);
void randomSeed(unsigned int);
long map(long, long, long, long, long);
#endif

If so, this should have provided the prototype for map() that you seem to be missing. Do you get the same error when you call the random() function?

Mikal

5

What operating system are you guys on?

6

Problem solved :-[.

What I thought to be 0011 was in fact 0010. It appears I somehow didn't have the latest version. My apologies.