Simple Waveform generator with Arduino Due -Cant compile

Projects Programming
1

Hi,

When I compile the code, it says,

"analogWriteResolution was not declared in this scope"

What is the problem? I'm attaching the code and the library which I compiled.

-Thushara Rathnayake

FunctionGenerator.ino (1.55 KB)

Waveforms.h (3.59 KB)

2

Did you tell the Arduino IDE that you have a Due?

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Good Luck!

3

Did you remember to select the DUE board before compiling?

4

I can upload the blink sketch successfully but when I try with the FunctionGenerator_Due.ino the following error comes. I haven't found a library zip file so I have copied and pasted the library code to a new tab and has named it "waveform.h"

Arduino: 1.6.12 (Windows 8.1), Board: "Arduino Due (Programming Port)"

In file included from C:\Users\User\AppData\Local\Arduino15\packages\arduino\hardware\sam\1.6.11\cores\arduino/Arduino.h:44:0,

                 from sketch\FunctionGenerator_Due.ino.ino.cpp:1:

C:\Users\User\Documents\Arduino\FunctionGenerator_Due\FunctionGenerator_Due.ino\FunctionGenerator_Due.ino.ino: In function 'void loop()':

FunctionGenerator_Due.ino:37: error: 't_sample' was not declared in this scope

   sample = constrain(t_sample, 0, oneHzSample);

                      ^

C:\Users\User\AppData\Local\Arduino15\packages\arduino\hardware\sam\1.6.11\cores\arduino/wiring_constants.h:74:35: note: in definition of macro 'constrain'

 #define constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt)))

                                   ^

exit status 1
't_sample' was not declared in this scope

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

waveform.h (3.66 KB)

5

Perhaps

  sample = map(analogRead(A0), 0, 4095, 0, oneHzSample);
  sample = constrain(t_sample, 0, oneHzSample);

is supposed to be

  sample = map(analogRead(A0), 0, 4095, 0, oneHzSample);
  sample = constrain(sample, 0, oneHzSample);

?
Otherwise, what did you mean by t_sample ?