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I'm sure it is my hork up re: tft.setFont() #w8tee

 

Jack,
not really a programmer..
started to compile got through the MorseCode.h issue,
it balks complaining?
Arduino: 1.6.9 (Windows 10), Board: "Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)"
?
I:\B40Software\B40SoftwareRel0106\B40SoftwareRel0106.ino: In function 'void ShowFrequency(long int, int)':
?
B40SoftwareRel0106:857: error: 'class MCUFRIEND_kbv' has no member named 'setFont'
?
? ?tft.setFont(); ? ? ? ? ?// Return to default size
?
? ? ? ?^
?
exit status 1
'class MCUFRIEND_kbv' has no member named 'setFont'
?
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.


I checked in MCUFRIEND_kbv-master\TFT_HX8347GLUE.h and at
line 110 it exists..
could you give a hint? on where I am messing up?
Vince
Jack Purdum
 

That's not your fault. Starting with Rel 1.8 of the compiler, they tightened up the expression parser to catch more errors that before. Also, the mcufriend library inherits a lot of its functionality from the Adafruit libraries that the code uses. So you need to make sure that you have that library installed.

#include <Adafruit_GFX.h> ? ? // https://github.com/adafruit/Adafruit-GFX-Library


If you look in that library around line 85 you'll see the function prototype for setFont(). If you look at line 13 in the mcufriend header file, you'll see:

class MCUFRIEND_kbv : public Adafruit_GFX {

What this says is that the mcufriend library "inherits" the functionality of the Adafruit_GFX library, but adds some of its own stuff on top of that. So if you see an error that something is missing, it could be that you didn't install the Adaruit library.

Jack, W8TEE

?

From: Vince Loschiavo <vince320@...>
To: [email protected]
Sent: Friday, August 18, 2017 4:55 PM
Subject: [BITX20] I'm sure it is my hork up re: tft.setFont() #w8tee

Jack,
not really a programmer..
started to compile got through the MorseCode.h issue,
it balks complaining?
Arduino: 1.6.9 (Windows 10), Board: "Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)"
?
I:\B40Software\B40SoftwareRel0106\B40SoftwareRel0106.ino: In function 'void ShowFrequency(long int, int)':
?
B40SoftwareRel0106:857: error: 'class MCUFRIEND_kbv' has no member named 'setFont'
?
? ?tft.setFont(); ? ? ? ? ?// Return to default size
?
? ? ? ?^
?
exit status 1
'class MCUFRIEND_kbv' has no member named 'setFont'
?
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.


I checked in MCUFRIEND_kbv-master\TFT_HX8347GLUE.h and at
line 110 it exists..
could you give a hint? on where I am messing up?
Vince
 

Jack,
Had the Adafruit - GFX-Library..just in case i downloaded and overwrot in the directory (i just keep those all as Zip, and add them.

Your suggestion was to look for it in line 85..didnt find it there, in fact only in 2 places..

? tft.setFont(); ? ? ? ? ?// Return to default size
? ? setFont(const GFXfont *f = NULL),
?
? then in:
I;\B40Software\libraries\Adafruit-GFX-Library-master\Adafruit-GFX-Library-master\Adafruit_GFX.h (1 hit)
line 103; ? ?setFont(const GFXfont 8f = NULL)

hmm.
sorry for being the dumbnutz..
vince
?
Jack Purdum
 

Hi Vince:

You misunderstood what I was saying. If you look in the mcrufriend_kbv.h header file around line 13 you will see:

class MCUFRIEND_kbv : public Adafruit_GFX {

The colon (:) above can be verbalized as "I inherit all of the public variables and functionality in the Adafruit_GFX library." Then I said to look in the Adafruit_GFX.h file and around line 85 you find the function prototype for the setFont() function.?

At line 251 in my code, I create a MCUFRIEND_kbv object from the mcuFriend library named tft:

MCUFRIEND_kbv tft; ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?// Graph structure definition for TFT display

However, since the mcuFriend_kbv library has full access to the Adafruit_GFX library via the inheritance chain, the tft object can access any public thingie in either library. That's one of the strengths of the Object Oriented Programming Trilogy: 1) Inheritance, 2) Encapsulation, and 3) Polymorphism.

Simplifying all the crap above, it means I can us both libraries through a single object named tft.

Jack, W8TEE

From: Vince Loschiavo <vince320@...>
To: [email protected]
Sent: Sunday, August 20, 2017 5:11 PM
Subject: Re: [BITX20] I'm sure it is my hork up re: tft.setFont() #w8tee

Jack,
Had the Adafruit - GFX-Library..just in case i downloaded and overwrot in the directory (i just keep those all as Zip, and add them.

Your suggestion was to look for it in line 85..didnt find it there, in fact only in 2 places..

? tft.setFont(); ? ? ? ? ?// Return to default size
? ? setFont(const GFXfont *f = NULL),
?
? then in:
I;\B40Software\libraries\Adafruit-GFX-Library-master\Adafruit-GFX-Library-master\Adafruit_GFX.h (1 hit)
line 103; ? ?setFont(const GFXfont 8f = NULL)

hmm.
sorry for being the dumbnutz..
vince
?



Virus-free.

 

Jack
thanks for the explanation. I'll dig in some more. That's what makes this an interesting project not being a programmer!!
vince
 

So definitely My Fault...
It is all about the details..and it was a step 1 issue.
the AdaFruit-GFX-Library is not AdaFruit-GFX-Library-master
just delete the -master and magically compiles..
i did follow what you are saying, but missed the name..

next build..
Thanks
Vince

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