rduino sketches

[chucketn]

I'm in the process of combining snippets of working sketches into a single sketch
I'm getting an error that 'Keypad' does not name a type.

Funny thing is I copied the keypad info from a working sketch, that compiles and runs. In the new unfinished sketch the line

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, rows, cols);

compiles in one and fails in the other.

I copied the following from the working sketch to the new one. It errors on the new one! Help?

#include <Keypad.h>
const byte rows = 4;
const byte cols = 4;
char keys[rows][cols] = {
{'1','2','3','B'},
{'4','5','6','L'},
{'7','8','9','R'},
{'*','0','#','E'}
};
byte rowPins[rows] = {11,10,9,8};
byte colPins[cols] = {7,6,5,4};
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, rows, cols);

Chuck

 

[chucketn]

Well, I fixed it. don't know how...
I removed some comments from the top of the new file and it compiled with no errors! Strange, the comments were in the original sketch I was modifying...

Chuck

 

[Scott_M]

I'll bet it was an errant or missing // ; or { }
Syntax is my biggest stumbling block
Glad you got it sorted

Scott

 

[rodw]

Sounds like the compiler got confused and could not find the keypad.h file so was a library misconfiguration error. Had that a couple of times myself.

 

[chucketn]

A few days ago I saw a result in a Google search that looked interesting, but I got involved in another result. Wouldn't you know, now I can't remember what that link was, or the particular search parameter that brought it up. It had something to do with assigning functions to key presses on a 4x4 matrix keypad, like 'Enter', or 'Back Space'. I would like to add a "Store the # entered' type function for what ever number I entered on the keyboard. Can anyone point me in the right direction? I can usually figure it out from a good example.

Chuck

 

[chucketn]

Found a great resource that I hadn't seen before. An official Arduino sketch page...
Lots of brain food here:

http://playground.arduino.cc/Main/SketchList

Chuck

 

[canadianhorsepower]

A few days ago I saw a result in a Google search that looked interesting, but I got involved in another result. Wouldn't you know, now I can't remember what that link was, or the particular search parameter that brought it up. It had something to do with assigning functions to key presses on a 4x4 matrix keypad, like 'Enter', or 'Back Space'. I would like to add a "Store the # entered' type function for what ever number I entered on the keyboard. Can anyone point me in the right direction? I can usually figure it out from a good example.

Chuck

does this help

http://playground.arduino.cc/Main/KeypadTutorial
cheers
Luc

 

[chucketn]

Thanks, Luc. You must be a mind reader...
I have been working on this for days. My software development skills leave a lot to be desired. I get so far and forget to save what I have working.
So far, I have a simple sketch that reads the 4x4 keypad, and displays on the LCD with the I2c serial module. Now back to figuring out how to get the # of divisions entered and stored, and transfer the stepper movement part of Chuck Fellows' sketch.

Chuck

 

[prof65]

Hi Chuck,
sometimes, when you use cut and paste you can include some "invisible" chars (newlines, strange symbols...); the editor doesn't show them but they are here and the compiler generates a syntax error.
If you completely delete the line and rewrite it by hand, without using cut and paste, that error disappears... :wall:
I saw this with both Arduino and Dev C++ compiler.

cheers

Roberto

 

[chucketn]

Hi Chuck,
sometimes, when you use cut and paste you can include some "invisible" chars (newlines, strange symbols...); the editor doesn't show them but they are here and the compiler generates a syntax error.
If you completely delete the line and rewrite it by hand, without using cut and paste, that error disappears... :wall:
I saw this with both Arduino and Dev C++ compiler.

cheers

Roberto

That makes a lot of sense, Roberto! I have had better luck installing a new library by extracting or unzipping to a folder, then moving the folder to the library. Thanks for pointing that out.

Chuck