RF Link with Manchester library

Projects Programming
1

Hello,

I'm currently trying to get a 434 MHz RF Link between my Arduino UNO (as receiver) and an Attiny85(as transmitter), using the Manchester library of carl47. I followed this tutorial Mchr3k - Arduino: Wireless sensor node - rf link working (2), but unfortunately I can't succeed in compiling this basic sketch :

#include <MANCHESTER.h>

#define TxPin 1 //the digital pin to use to transmit data

unsigned int Tdata = 0;  //the 16 bits to send

void setup()
{                
MANCHESTER.SetTxPin(TxPin);      // sets the digital pin as output default 4
}//end of setup

void loop()
{
 Tdata +=1;
 MANCHESTER.Transmit(Tdata);
 delay(100);
}//end of loop

I get the following errors:

/home/valere/sketchbook/libraries/Manchester/MANCHESTER.cpp: In constructor ‘MANCHESTERClass::MANCHESTERClass()’:
/home/valere/sketchbook/libraries/Manchester/MANCHESTER.cpp:42: erreur: ‘TCCR2A’ was not declared in this scope
/home/valere/sketchbook/libraries/Manchester/MANCHESTER.cpp:43: erreur: ‘TCCR2B’ was not declared in this scope
/home/valere/sketchbook/libraries/Manchester/MANCHESTER.cpp:44: erreur: ‘TIMSK2’ was not declared in this scope
/home/valere/sketchbook/libraries/Manchester/MANCHESTER.cpp: In member function ‘unsigned int MANCHESTERClass::Receive()’:
/home/valere/sketchbook/libraries/Manchester/MANCHESTER.cpp:85: erreur: ‘TCNT2’ was not declared in this scope
/home/valere/sketchbook/libraries/Manchester/MANCHESTER.cpp:126: erreur: ‘TCNT2’ was not declared in this scope

Thank for any helpful answer !

2

Are you using 1.0? If so, try changing WProgram.h to Arduino.h in MANCHESTER.h

3

Thanks for your answer. No, I'm using 0022. However I tried your trick on 1.0 but it doesn't work :~ Maybe is it an Attiny core problem ?

4

I missed that important clue. The ATTiny85 doesn't have a Timer2, so it isn't a surprised code for it that uses Timer2 won't compile.

5

It's a little bit strange because I selected the internal 8Mhz clock to be used instead of the 1MHz by burning the bootloader, so it should normally compile.

6

The page you link to has lots of interesting information and details about how to use the ATtiny. Have you followed all of the steps outlined there?

E.g.:
"The only interesting point with the main .pde file is that the #include of the MANCHESTER.h file uses "" instead of <> (#include "MANCHESTER.h"). I had to change this from the example included with the manchester.zip file."

7

I tried again the tutorial from the beginning and it perfectly worked (without forgetting the quote a side MANCHESTER :wink: )! Thank you for your help !

8

I have exactly same issue as you. How did you solve it?