Wont compile - "passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive]"

[bencoton]

Can you please help with the code? I am having multiple failures however the failure in the title seems to be the greatest failure.

I am using Arduino IDE 1.8.19

In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp:13:0:
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'int32_t LoadCell::ReadARawValue() const':
LoadCell.h:336:50: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive]
int32_t ReadARawValue() const { return read(); }
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp:13:
C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()'
float read();
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp:13:0:
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'double LoadCell::ReadARawValueD() const':
LoadCell.h:337:70: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive]
double ReadARawValueD() const { return static_cast(read()); }
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp:13:
C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()'
float read();
^
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp: In constructor 'LoadCell::LoadCell(int, int, uint8_t)':
LoadCell.cpp:49:26: error: no matching function for call to 'LoadCell::begin(int&, int&, uint8_t&)'
begin(dout, sck, gain);
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp:13:
C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:38:12: note: candidate: void HX711::begin(uint8_t, uint8_t)
void begin(uint8_t dataPin, uint8_t clockPin);
^
C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:38:12: note: candidate expects 2 arguments, 3 provided
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp: In member function 'bool LoadCell::IsPresent() const':
LoadCell.cpp:142:35: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive]
if (!wait_ready_retry(10U, 10U) || (ReadARawValue() == 0L))
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp:13:
C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:49:12: note: in call to 'bool HX711::wait_ready_retry(uint8_t, uint32_t)'
bool wait_ready_retry(uint8_t retries = 3, uint32_t ms = 0);
^
At global scope:
cc1plus.exe: warning: unrecognized command line option '-Wno-frame-address'
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.h:16,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.cpp:14:
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'int32_t LoadCell::ReadARawValue() const':
LoadCell.h:336:50: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive]
int32_t ReadARawValue() const { return read(); }
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.h:16,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.cpp:14:
C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()'
float read();
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.h:16,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.cpp:14:
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'double LoadCell::ReadARawValueD() const':
LoadCell.h:337:70: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive]
double ReadARawValueD() const { return static_cast(read()); }
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.h:16,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.cpp:14:
C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()'
float read();
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:18:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.h:16,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.cpp:14:
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Save() const':
SpoolManager.h:406:9: error: 'Preferences' was not declared in this scope
Preferences prefs;
^
SpoolManager.h:407:9: error: 'prefs' was not declared in this scope
prefs.begin(m_pName);
^
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Restore()':
SpoolManager.h:460:9: error: 'Preferences' was not declared in this scope
Preferences prefs;
^
SpoolManager.h:461:9: error: 'prefs' was not declared in this scope
prefs.begin(m_pName);
^
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Reset()':
SpoolManager.h:498:9: error: 'Preferences' was not declared in this scope
Preferences prefs;
^
SpoolManager.h:499:9: error: 'prefs' was not declared in this scope
prefs.begin(m_pName);
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp:12:
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'int32_t LoadCell::ReadARawValue() const':
LoadCell.h:336:50: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive]
int32_t ReadARawValue() const { return read(); }
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp:12:
C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()'
float read();
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp:12:
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'double LoadCell::ReadARawValueD() const':
LoadCell.h:337:70: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive]
double ReadARawValueD() const { return static_cast(read()); }
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp:12:
C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()'
float read();
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:18:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp:12:
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Save() const':
SpoolManager.h:406:9: error: 'Preferences' was not declared in this scope
Preferences prefs;
^
SpoolManager.h:407:9: error: 'prefs' was not declared in this scope
prefs.begin(m_pName);
^
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Restore()':
SpoolManager.h:460:9: error: 'Preferences' was not declared in this scope
Preferences prefs;
^
SpoolManager.h:461:9: error: 'prefs' was not declared in this scope
prefs.begin(m_pName);
^
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Reset()':
SpoolManager.h:498:9: error: 'Preferences' was not declared in this scope
Preferences prefs;
^
SpoolManager.h:499:9: error: 'prefs' was not declared in this scope
prefs.begin(m_pName);
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\Display.cpp:14:
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'int32_t LoadCell::ReadARawValue() const':
LoadCell.h:336:50: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive]
int32_t ReadARawValue() const { return read(); }
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\Display.cpp:14:
C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()'
float read();
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\Display.cpp:14:
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'double LoadCell::ReadARawValueD() const':
LoadCell.h:337:70: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive]
double ReadARawValueD() const { return static_cast(read()); }
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\Display.cpp:14:
C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()'
float read();
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.ino:53:
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'int32_t LoadCell::ReadARawValue() const':
LoadCell.h:336:50: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive]
int32_t ReadARawValue() const { return read(); }
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.ino:53:
C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()'
float read();
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.ino:53:
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'double LoadCell::ReadARawValueD() const':
LoadCell.h:337:70: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive]
double ReadARawValueD() const { return static_cast(read()); }
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.ino:53:
C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()'
float read();
^
In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:18:0,
from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.ino:53:
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Save() const':
SpoolManager.h:406:9: error: 'Preferences' was not declared in this scope
Preferences prefs;
^
SpoolManager.h:407:9: error: 'prefs' was not declared in this scope
prefs.begin(m_pName);
^
At global scope:
cc1plus.exe: warning: unrecognized command line option '-Wno-frame-address'
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Restore()':
SpoolManager.h:460:9: error: 'Preferences' was not declared in this scope
Preferences prefs;
^
SpoolManager.h:461:9: error: 'prefs' was not declared in this scope
prefs.begin(m_pName);
^
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Reset()':
SpoolManager.h:498:9: error: 'Preferences' was not declared in this scope
Preferences prefs;
^
SpoolManager.h:499:9: error: 'prefs' was not declared in this scope
prefs.begin(m_pName);
^
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp: In static member function 'static bool MainScreen::Save()':
MainScreen.cpp:370:9: error: 'Preferences' was not declared in this scope
Preferences prefs;
^
MainScreen.cpp:371:9: error: 'prefs' was not declared in this scope
prefs.begin(m_pName);
^
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp: In static member function 'static bool MainScreen::Restore()':
MainScreen.cpp:416:9: error: 'Preferences' was not declared in this scope
Preferences prefs;
^
MainScreen.cpp:417:9: error: 'prefs' was not declared in this scope
prefs.begin(m_pName);
^
C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp: In static member function 'static bool MainScreen::Reset()':
MainScreen.cpp:465:9: error: 'Preferences' was not declared in this scope
Preferences prefs;
^
MainScreen.cpp:466:9: error: 'prefs' was not declared in this scope
prefs.begin(m_pName);
^
At global scope:
cc1plus.exe: warning: unrecognized command line option '-Wno-frame-address'
At global scope:
cc1plus.exe: warning: unrecognized command line option '-Wno-frame-address'
At global scope:
cc1plus.exe: warning: unrecognized command line option '-Wno-frame-address'
Multiple libraries were found for "WiFi.h"
Used: C:\Users\bcoto\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.2\libraries\WiFi
Not used: C:\Program Files (x86)\Arduino\libraries\WiFi
exit status 1
passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive]

Cheers,

Ben

[regnaDkciN]

Hi bencoton, It looks like the first compiler error you are seeing has to do with my declaring LoadCell::ReadRawValue() as a const method, and HX711::read() not being declared as const.  However, the version of the HX711 library that I have declares HX711::read as const: // waits for the chip to be ready and returns a reading long read() const; This is at line 56 of the version of HX711.h that I have.  Look at HX711.h and verify that the read() method is declared as const.  The path to my HX711 library is:          C:\\Users\\YOUR_USER_NAME\\Documents\\Arduino\\libraries\\HX711_Arduino_Library\\src If your version doesn't show  read() as being const, then you may have an old version, or certainly one that is different than mine. This goes for many of the other errors that are reported as:          'this' argument discards qualifiers [-fpermissive] I haven't checked all of them, but I am guessing that this could be the problem. Additionally, I noticed that your compiler doesn't understand a command line option that was passed:         '-Wno-frame-address' I have never seen anything like this when I compile.  It makes me wonder if some other setting or command line option is set that is causing your errors.  Certainly there are quite a few errors pertaining to "Preferences" not being declared in scope.  However, if you look at Preferences.h you will see that Preferences is the name of the class, and Preferences.h is included at the top of the offending file.  This leads me to believe that you may have a setup problem.  Be sure That your board is setup as "Arduino ESP32 Feather". I am using a different version of Arduino than you are: 1.8.13.  Although this could have something to do with your issues, I doubt it. Please let me know what you find and I'll try to help more if needed. Good luck,Joe On Wednesday, April 6, 2022, 05:04:34 AM EDT, bencoton ***@***.***> wrote: Can you please help with the code? I am having multiple failures however the failure in the title seems to be the greatest failure. I am using Arduino IDE 1.8.19 In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp:13:0: C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'int32_t LoadCell::ReadARawValue() const': LoadCell.h:336:50: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive] int32_t ReadARawValue() const { return read(); } ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp:13: C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()' float read(); ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp:13:0: C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'double LoadCell::ReadARawValueD() const': LoadCell.h:337:70: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive] double ReadARawValueD() const { return static_cast(read()); } ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp:13: C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()' float read(); ^ C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp: In constructor 'LoadCell::LoadCell(int, int, uint8_t)': LoadCell.cpp:49:26: error: no matching function for call to 'LoadCell::begin(int&, int&, uint8_t&)' begin(dout, sck, gain); ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp:13: C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:38:12: note: candidate: void HX711::begin(uint8_t, uint8_t) void begin(uint8_t dataPin, uint8_t clockPin); ^ C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:38:12: note: candidate expects 2 arguments, 3 provided C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp: In member function 'bool LoadCell::IsPresent() const': LoadCell.cpp:142:35: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive] if (!wait_ready_retry(10U, 10U) || (ReadARawValue() == 0L)) ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.cpp:13: C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:49:12: note: in call to 'bool HX711::wait_ready_retry(uint8_t, uint32_t)' bool wait_ready_retry(uint8_t retries = 3, uint32_t ms = 0); ^ At global scope: cc1plus.exe: warning: unrecognized command line option '-Wno-frame-address' In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.h:16, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.cpp:14: C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'int32_t LoadCell::ReadARawValue() const': LoadCell.h:336:50: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive] int32_t ReadARawValue() const { return read(); } ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.h:16, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.cpp:14: C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()' float read(); ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.h:16, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.cpp:14: C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'double LoadCell::ReadARawValueD() const': LoadCell.h:337:70: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive] double ReadARawValueD() const { return static_cast(read()); } ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.h:16, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.cpp:14: C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()' float read(); ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:18:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.h:16, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\HslColor.cpp:14: C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Save() const': SpoolManager.h:406:9: error: 'Preferences' was not declared in this scope Preferences prefs; ^ SpoolManager.h:407:9: error: 'prefs' was not declared in this scope prefs.begin(m_pName); ^ C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Restore()': SpoolManager.h:460:9: error: 'Preferences' was not declared in this scope Preferences prefs; ^ SpoolManager.h:461:9: error: 'prefs' was not declared in this scope prefs.begin(m_pName); ^ C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Reset()': SpoolManager.h:498:9: error: 'Preferences' was not declared in this scope Preferences prefs; ^ SpoolManager.h:499:9: error: 'prefs' was not declared in this scope prefs.begin(m_pName); ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp:12: C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'int32_t LoadCell::ReadARawValue() const': LoadCell.h:336:50: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive] int32_t ReadARawValue() const { return read(); } ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp:12: C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()' float read(); ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp:12: C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'double LoadCell::ReadARawValueD() const': LoadCell.h:337:70: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive] double ReadARawValueD() const { return static_cast(read()); } ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp:12: C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()' float read(); ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:18:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp:12: C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Save() const': SpoolManager.h:406:9: error: 'Preferences' was not declared in this scope Preferences prefs; ^ SpoolManager.h:407:9: error: 'prefs' was not declared in this scope prefs.begin(m_pName); ^ C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Restore()': SpoolManager.h:460:9: error: 'Preferences' was not declared in this scope Preferences prefs; ^ SpoolManager.h:461:9: error: 'prefs' was not declared in this scope prefs.begin(m_pName); ^ C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Reset()': SpoolManager.h:498:9: error: 'Preferences' was not declared in this scope Preferences prefs; ^ SpoolManager.h:499:9: error: 'prefs' was not declared in this scope prefs.begin(m_pName); ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\Display.cpp:14: C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'int32_t LoadCell::ReadARawValue() const': LoadCell.h:336:50: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive] int32_t ReadARawValue() const { return read(); } ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\Display.cpp:14: C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()' float read(); ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\Display.cpp:14: C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'double LoadCell::ReadARawValueD() const': LoadCell.h:337:70: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive] double ReadARawValueD() const { return static_cast(read()); } ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\Display.cpp:14: C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()' float read(); ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.ino:53: C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'int32_t LoadCell::ReadARawValue() const': LoadCell.h:336:50: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive] int32_t ReadARawValue() const { return read(); } ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.ino:53: C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()' float read(); ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.ino:53: C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h: In member function 'double LoadCell::ReadARawValueD() const': LoadCell.h:337:70: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive] double ReadARawValueD() const { return static_cast(read()); } ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\LoadCell.h:17:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:16, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.ino:53: C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()' float read(); ^ In file included from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.h:18:0, from C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\JmcFilamentScale.ino:53: C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Save() const': SpoolManager.h:406:9: error: 'Preferences' was not declared in this scope Preferences prefs; ^ SpoolManager.h:407:9: error: 'prefs' was not declared in this scope prefs.begin(m_pName); ^ At global scope: cc1plus.exe: warning: unrecognized command line option '-Wno-frame-address' C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Restore()': SpoolManager.h:460:9: error: 'Preferences' was not declared in this scope Preferences prefs; ^ SpoolManager.h:461:9: error: 'prefs' was not declared in this scope prefs.begin(m_pName); ^ C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\SpoolManager.h: In member function 'bool SpoolManager::Reset()': SpoolManager.h:498:9: error: 'Preferences' was not declared in this scope Preferences prefs; ^ SpoolManager.h:499:9: error: 'prefs' was not declared in this scope prefs.begin(m_pName); ^ C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp: In static member function 'static bool MainScreen::Save()': MainScreen.cpp:370:9: error: 'Preferences' was not declared in this scope Preferences prefs; ^ MainScreen.cpp:371:9: error: 'prefs' was not declared in this scope prefs.begin(m_pName); ^ C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp: In static member function 'static bool MainScreen::Restore()': MainScreen.cpp:416:9: error: 'Preferences' was not declared in this scope Preferences prefs; ^ MainScreen.cpp:417:9: error: 'prefs' was not declared in this scope prefs.begin(m_pName); ^ C:\Users\bcoto\OneDrive\Desktop\Filament Scale\Filament-Scale-main\SourceFiles\JmcFilamentScale\MainScreen.cpp: In static member function 'static bool MainScreen::Reset()': MainScreen.cpp:465:9: error: 'Preferences' was not declared in this scope Preferences prefs; ^ MainScreen.cpp:466:9: error: 'prefs' was not declared in this scope prefs.begin(m_pName); ^ At global scope: cc1plus.exe: warning: unrecognized command line option '-Wno-frame-address' At global scope: cc1plus.exe: warning: unrecognized command line option '-Wno-frame-address' At global scope: cc1plus.exe: warning: unrecognized command line option '-Wno-frame-address' Multiple libraries were found for "WiFi.h" Used: C:\Users\bcoto\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.2\libraries\WiFi Not used: C:\Program Files (x86)\Arduino\libraries\WiFi exit status 1 passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive] Cheers, Ben — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[bencoton]

Hi Joe,

I have re-installed arduino ide multiple times - down grading to 1.8.13 like yours. This has cured some of the problems but the original one remains - see below
9as well as a load of others as before. The At global scope:
cc1plus.exe: warning: unrecognized command line option '-Wno-frame-address'
At global scope: has now cleared up.

In file included from sketch\LoadCell.cpp:13:0:
sketch\LoadCell.h: In member function 'int32_t LoadCell::ReadARawValue() const':
LoadCell.h:336:50: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive]
int32_t ReadARawValue() const { return read(); }
^
In file included from sketch\LoadCell.h:17:0,
from sketch\LoadCell.cpp:13:
C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()'
float read();
^
I have tried multiple HX711 libs to no avail. Any help will be appreciated - I hope to get this working because
i have purchased all the bits :)

Cheers,
Ben

[regnaDkciN]

Hi Ben, I think I see what has happened.  It looks like at some point in the distant past (probably around 2 years or so ago) I made modifications to several of the Arduino libraries.  I honestly don't remember making these changes, but it seems like it is the only explanation.  The changes I made were to declare many methods as const since they did not actually make any changes to the class and logically were const.  I must have forgotten about them and never bothered placing the files in public domain.  The code I subsequently wrote depended on these modified files.  I apologize for the mixup.  At this point I'm trying to decide on the best path to fix the problems.  The easiest solution would be to place my modified files on the scale github site and tell all users to overwrite the original library files with the new ones.  However, this is really a kludge which would probably cause issues down the road when new versions of the libraries are released.  I need to spend some time to determine what to do and how to do it. I understand that you already ordered the parts.  Don't worry, I'll help you however I can to get the files so that you can use them.  For the short term if you think you would like me to send the modified versions of my library files I'll gladly do it.  Please let me know if this is how you want to proceed.  Sorry about the problem,Joe On Wednesday, April 6, 2022, 12:51:14 PM EDT, bencoton ***@***.***> wrote: Hi Joe, I have re-installed arduino ide multiple times - down grading to 1.8.13 like yours. This has cured some of the problems but the original one remains - see below 9as well as a load of others as before. The At global scope: cc1plus.exe: warning: unrecognized command line option '-Wno-frame-address' At global scope: has now cleared up. In file included from sketch\LoadCell.cpp:13:0: sketch\LoadCell.h: In member function 'int32_t LoadCell::ReadARawValue() const': LoadCell.h:336:50: error: passing 'const LoadCell' as 'this' argument discards qualifiers [-fpermissive] int32_t ReadARawValue() const { return read(); } ^ In file included from sketch\LoadCell.h:17:0, from sketch\LoadCell.cpp:13: C:\Users\bcoto\OneDrive\Documents\Arduino\libraries\HX711/HX711.h:54:12: note: in call to 'float HX711::read()' float read(); ^ I have tried multiple HX711 libs to no avail. Any help will be appreciated - I hope to get this working because i have purchased all the bits :) Cheers, Ben — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: ***@***.***>

[bencoton]

Hi Joe,

I would be happy if you sent me the modified files please? I appreciate its not the best solution for everyone however it will get me going a treat.

Cheers,

Ben

[regnaDkciN]

These 2 files should be the only ones that need replacing.  You'll need to overwrite the ones that are currently in your library. On Wednesday, April 6, 2022, 02:19:32 PM EDT, bencoton ***@***.***> wrote: Hi Joe, I would be happy if you sent me the modified files please? I appreciate its not the best solution for everyone however it will get me going a treat. Cheers, Ben — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: ***@***.***> /** * * HX711 library for Arduino * https://github.com/bogde/HX711 * * MIT License * (c) 2018 Bogdan Necula * **/ #include <Arduino.h> #include "HX711.h" // TEENSYDUINO has a port of Dean Camera's ATOMIC_BLOCK macros for AVR to ARM Cortex M3. #define HAS_ATOMIC_BLOCK (defined(ARDUINO_ARCH_AVR) || defined(TEENSYDUINO)) // Whether we are running on either the ESP8266 or the ESP32. #define ARCH_ESPRESSIF (defined(ARDUINO_ARCH_ESP8266) || defined(ARDUINO_ARCH_ESP32)) // Whether we are actually running on FreeRTOS. #define IS_FREE_RTOS defined(ARDUINO_ARCH_ESP32) // Define macro designating whether we're running on a reasonable // fast CPU and so should slow down sampling from GPIO. #define FAST_CPU \ ( \ ARCH_ESPRESSIF || \ defined(ARDUINO_ARCH_SAM) || defined(ARDUINO_ARCH_SAMD) || \ defined(ARDUINO_ARCH_STM32) || defined(TEENSYDUINO) \ ) #if HAS_ATOMIC_BLOCK // Acquire AVR-specific ATOMIC_BLOCK(ATOMIC_RESTORESTATE) macro. #include <util/atomic.h> #endif #if FAST_CPU // Make shiftIn() be aware of clockspeed for // faster CPUs like ESP32, Teensy 3.x and friends. // See also: // - bogde/HX711#75 // - https://github.com/arduino/Arduino/issues/6561 // - https://community.hiveeyes.org/t/using-bogdans-canonical-hx711-library-on-the-esp32/539 uint8_t shiftInSlow(uint8_t dataPin, uint8_t clockPin, uint8_t bitOrder) { uint8_t value = 0; uint8_t i; for(i = 0; i < 8; ++i) { digitalWrite(clockPin, HIGH); delayMicroseconds(1); if(bitOrder == LSBFIRST) value |= digitalRead(dataPin) << i; else value |= digitalRead(dataPin) << (7 - i); digitalWrite(clockPin, LOW); delayMicroseconds(1); } return value; } #define SHIFTIN_WITH_SPEED_SUPPORT(data,clock,order) shiftInSlow(data,clock,order) #else #define SHIFTIN_WITH_SPEED_SUPPORT(data,clock,order) shiftIn(data,clock,order) #endif HX711::HX711() { } HX711::~HX711() { } void HX711::begin(byte dout, byte pd_sck, byte gain) { PD_SCK = pd_sck; DOUT = dout; pinMode(PD_SCK, OUTPUT); pinMode(DOUT, INPUT_PULLUP); set_gain(gain); } bool HX711::is_ready() const { return digitalRead(DOUT) == LOW; } void HX711::set_gain(byte gain) { switch (gain) { case 128: // channel A, gain factor 128 GAIN = 1; break; case 64: // channel A, gain factor 64 GAIN = 3; break; case 32: // channel B, gain factor 32 GAIN = 2; break; } } long HX711::read() const { // Wait for the chip to become ready. wait_ready(); // Define structures for reading data into. unsigned long value = 0; uint8_t data[3] = { 0 }; uint8_t filler = 0x00; // Protect the read sequence from system interrupts. If an interrupt occurs during // the time the PD_SCK signal is high it will stretch the length of the clock pulse. // If the total pulse time exceeds 60 uSec this will cause the HX711 to enter // power down mode during the middle of the read sequence. While the device will // wake up when PD_SCK goes low again, the reset starts a new conversion cycle which // forces DOUT high until that cycle is completed. // // The result is that all subsequent bits read by shiftIn() will read back as 1, // corrupting the value returned by read(). The ATOMIC_BLOCK macro disables // interrupts during the sequence and then restores the interrupt mask to its previous // state after the sequence completes, insuring that the entire read-and-gain-set // sequence is not interrupted. The macro has a few minor advantages over bracketing // the sequence between `noInterrupts()` and `interrupts()` calls. #if HAS_ATOMIC_BLOCK ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { #elif IS_FREE_RTOS // Begin of critical section. // Critical sections are used as a valid protection method // against simultaneous access in vanilla FreeRTOS. // Disable the scheduler and call portDISABLE_INTERRUPTS. This prevents // context switches and servicing of ISRs during a critical section. portMUX_TYPE mux = portMUX_INITIALIZER_UNLOCKED; portENTER_CRITICAL(&mux); #else // Disable interrupts. noInterrupts(); #endif // Pulse the clock pin 24 times to read the data. data[2] = SHIFTIN_WITH_SPEED_SUPPORT(DOUT, PD_SCK, MSBFIRST); data[1] = SHIFTIN_WITH_SPEED_SUPPORT(DOUT, PD_SCK, MSBFIRST); data[0] = SHIFTIN_WITH_SPEED_SUPPORT(DOUT, PD_SCK, MSBFIRST); // Set the channel and the gain factor for the next reading using the clock pin. for (unsigned int i = 0; i < GAIN; i++) { digitalWrite(PD_SCK, HIGH); #if ARCH_ESPRESSIF delayMicroseconds(1); #endif digitalWrite(PD_SCK, LOW); #if ARCH_ESPRESSIF delayMicroseconds(1); #endif } #if IS_FREE_RTOS // End of critical section. portEXIT_CRITICAL(&mux); #elif HAS_ATOMIC_BLOCK } #else // Enable interrupts again. interrupts(); #endif // Replicate the most significant bit to pad out a 32-bit signed integer if (data[2] & 0x80) { filler = 0xFF; } else { filler = 0x00; } // Construct a 32-bit signed integer value = ( static_cast<unsigned long>(filler) << 24 | static_cast<unsigned long>(data[2]) << 16 | static_cast<unsigned long>(data[1]) << 8 | static_cast<unsigned long>(data[0]) ); return static_cast<long>(value); } void HX711::wait_ready(unsigned long delay_ms) const { // Wait for the chip to become ready. // This is a blocking implementation and will // halt the sketch until a load cell is connected. while (!is_ready()) { // Probably will do no harm on AVR but will feed the Watchdog Timer (WDT) on ESP. // bogde/HX711#73 delay(delay_ms); } } bool HX711::wait_ready_retry(int retries, unsigned long delay_ms) const { // Wait for the chip to become ready by // retrying for a specified amount of attempts. // bogde/HX711#76 int count = 0; while (count < retries) { if (is_ready()) { return true; } delay(delay_ms); count++; } return false; } bool HX711::wait_ready_timeout(unsigned long timeout, unsigned long delay_ms) const { // Wait for the chip to become ready until timeout. // bogde/HX711#96 unsigned long millisStarted = millis(); while (millis() - millisStarted < timeout) { if (is_ready()) { return true; } delay(delay_ms); } return false; } long HX711::read_average(byte times) const { long sum = 0; for (byte i = 0; i < times; i++) { sum += read(); // Probably will do no harm on AVR but will feed the Watchdog Timer (WDT) on ESP. // bogde/HX711#73 delay(0); } return sum / times; } double HX711::get_value(byte times) const { return read_average(times) - OFFSET; } float HX711::get_units(byte times) const { return get_value(times) / SCALE; } void HX711::tare(byte times) { double sum = read_average(times); set_offset(sum); } void HX711::set_scale(float scale) { SCALE = scale; } float HX711::get_scale() const { return SCALE; } void HX711::set_offset(long offset) { OFFSET = offset; } long HX711::get_offset() const { return OFFSET; } void HX711::power_down() const { digitalWrite(PD_SCK, LOW); digitalWrite(PD_SCK, HIGH); } void HX711::power_up() const { digitalWrite(PD_SCK, LOW); } /** * * HX711 library for Arduino * https://github.com/bogde/HX711 * * MIT License * (c) 2018 Bogdan Necula * **/ #ifndef HX711_h #define HX711_h #if ARDUINO >= 100 #include "Arduino.h" #else #include "WProgram.h" #endif class HX711 { private: byte PD_SCK; // Power Down and Serial Clock Input Pin byte DOUT; // Serial Data Output Pin byte GAIN; // amplification factor long OFFSET = 0; // used for tare weight float SCALE = 1; // used to return weight in grams, kg, ounces, whatever public: HX711(); virtual ~HX711(); // Initialize library with data output pin, clock input pin and gain factor. // Channel selection is made by passing the appropriate gain: // - With a gain factor of 64 or 128, channel A is selected // - With a gain factor of 32, channel B is selected // The library default is "128" (Channel A). void begin(byte dout, byte pd_sck, byte gain = 128); // Check if HX711 is ready // from the datasheet: When output data is not ready for retrieval, digital output pin DOUT is high. Serial clock // input PD_SCK should be low. When DOUT goes to low, it indicates data is ready for retrieval. bool is_ready() const; // Wait for the HX711 to become ready void wait_ready(unsigned long delay_ms = 0) const; bool wait_ready_retry(int retries = 3, unsigned long delay_ms = 0) const; bool wait_ready_timeout(unsigned long timeout = 1000, unsigned long delay_ms = 0) const; // set the gain factor; takes effect only after a call to read() // channel A can be set for a 128 or 64 gain; channel B has a fixed 32 gain // depending on the parameter, the channel is also set to either A or B void set_gain(byte gain = 128); // waits for the chip to be ready and returns a reading long read() const; // returns an average reading; times = how many times to read long read_average(byte times = 10) const; // returns (read_average() - OFFSET), that is the current value without the tare weight; times = how many readings to do double get_value(byte times = 1) const; // returns get_value() divided by SCALE, that is the raw value divided by a value obtained via calibration // times = how many readings to do float get_units(byte times = 1) const; // set the OFFSET value for tare weight; times = how many times to read the tare value void tare(byte times = 10); // set the SCALE value; this value is used to convert the raw data to "human readable" data (measure units) void set_scale(float scale = 1.f); // get the current SCALE float get_scale() const; // set OFFSET, the value that's subtracted from the actual reading (tare weight) void set_offset(long offset = 0); // get the current OFFSET long get_offset() const; // puts the chip into power down mode void power_down() const; // wakes up the chip after power down mode void power_up() const; }; #endif /* HX711_h */

[bencoton]

Hi Joe,

We are getting to the bottom of this now however there are more problems - please see below:

menuBase.cpp:50:1: error: too many initializers for 'navCodesDef {aka const Menu::navCode [10]}'
};
^
items.cpp:6:24: error: 'const char* Menu::fieldBase::TunningCursor' is not a static data member of 'class Menu::fieldBase'
const char fieldBase::TunningCursor = ">";
^
items.cpp:7:24: error: 'const char Menu::fieldBase::NonTunningCursor' is not a static data member of 'class Menu::fieldBase'
const char *fieldBase::NonTunningCursor = ":";
^
sketch\ScaleMenu.cpp: In member function 'Menu::Used WeightField::printTo(Menu::navRoot&, bool, Menu::menuOut&, Menu::idx_t, Menu::idx_t, Menu::idx_t)':
ScaleMenu.cpp:206:23: error: 'TunningCursor' is not a member of 'Menu::fieldBase'
fieldBase::TunningCursor : fieldBase::NonTunningCursor) : " ");
^
ScaleMenu.cpp:206:50: error: 'NonTunningCursor' is not a member of 'Menu::fieldBase'
fieldBase::TunningCursor : fieldBase::NonTunningCursor) : " ");
^
sketch\items.cpp: In member function 'virtual Menu::Used Menu::fieldBase::printTo(Menu::navRoot&, bool, Menu::menuOut&, Menu::idx_t, Menu::idx_t, Menu::idx_t)':
items.cpp:399:53: error: 'TunningCursor' was not declared in this scope
out.print((root.navFocus==this&&sel)?(tunning ? TunningCursor : NonTunningCursor) :" ");
^
items.cpp:399:69: error: 'NonTunningCursor' was not declared in this scope
out.print((root.navFocus==this&&sel)?(tunning ? TunningCursor : NonTunningCursor) :" ");
^
sketch\ScaleMenu.cpp: In function 'void InitScaleMenus()':
ScaleMenu.cpp:1644:5: error: 'TunningCursor' is not a member of 'Menu::fieldBase'
fieldBase::TunningCursor = MODIFY_FINE_ICON;
^
ScaleMenu.cpp:1645:5: error: 'NonTunningCursor' is not a member of 'Menu::fieldBase'
fieldBase::NonTunningCursor = MODIFY_COARSE_ICON;
^
Multiple libraries were found for "WiFi.h"
Used: C:\Users\bcoto\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\libraries\WiFi
Not used: C:\Program Files (x86)\Arduino\libraries\WiFi
exit status 1
too many initializers for 'navCodesDef {aka const Menu::navCode [10]}'

Any ideas?

Cheers,

Ben

[regnaDkciN]

Hi Ben, Unfortunately, I won't get to look at this till tomorrow.  However, from a quick look, are you sure that you replaced the two menu library files with the ones I put on github?  It is possible that these menu related issues could be related to not using the modified files.  If the files have been replaced, please let me know and I'll look into it tomorrow. Joe On Wednesday, April 6, 2022, 02:58:08 PM EDT, bencoton ***@***.***> wrote: Hi Joe, We are getting to the bottom of this now however there are more problems - please see below: menuBase.cpp:50:1: error: too many initializers for 'navCodesDef {aka const Menu::navCode [10]}' }; ^ items.cpp:6:24: error: 'const char* Menu::fieldBase::TunningCursor' is not a static data member of 'class Menu::fieldBase' const char fieldBase::TunningCursor = ">"; ^ items.cpp:7:24: error: 'const char Menu::fieldBase::NonTunningCursor' is not a static data member of 'class Menu::fieldBase' const char *fieldBase::NonTunningCursor = ":"; ^ sketch\ScaleMenu.cpp: In member function 'Menu::Used WeightField::printTo(Menu::navRoot&, bool, Menu::menuOut&, Menu::idx_t, Menu::idx_t, Menu::idx_t)': ScaleMenu.cpp:206:23: error: 'TunningCursor' is not a member of 'Menu::fieldBase' fieldBase::TunningCursor : fieldBase::NonTunningCursor) : " "); ^ ScaleMenu.cpp:206:50: error: 'NonTunningCursor' is not a member of 'Menu::fieldBase' fieldBase::TunningCursor : fieldBase::NonTunningCursor) : " "); ^ sketch\items.cpp: In member function 'virtual Menu::Used Menu::fieldBase::printTo(Menu::navRoot&, bool, Menu::menuOut&, Menu::idx_t, Menu::idx_t, Menu::idx_t)': items.cpp:399:53: error: 'TunningCursor' was not declared in this scope out.print((root.navFocus==this&&sel)?(tunning ? TunningCursor : NonTunningCursor) :" "); ^ items.cpp:399:69: error: 'NonTunningCursor' was not declared in this scope out.print((root.navFocus==this&&sel)?(tunning ? TunningCursor : NonTunningCursor) :" "); ^ sketch\ScaleMenu.cpp: In function 'void InitScaleMenus()': ScaleMenu.cpp:1644:5: error: 'TunningCursor' is not a member of 'Menu::fieldBase' fieldBase::TunningCursor = MODIFY_FINE_ICON; ^ ScaleMenu.cpp:1645:5: error: 'NonTunningCursor' is not a member of 'Menu::fieldBase' fieldBase::NonTunningCursor = MODIFY_COARSE_ICON; ^ Multiple libraries were found for "WiFi.h" Used: C:\Users\bcoto\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\libraries\WiFi Not used: C:\Program Files (x86)\Arduino\libraries\WiFi exit status 1 too many initializers for 'navCodesDef {aka const Menu::navCode [10]}' Any ideas? Cheers, Ben — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: ***@***.***>

[bencoton]

Hi Joe,

Thanks for the help on this - its up and working now.

Cheers,
Ben

[mmally]

Hi Ben,

how did you solve it?

Cheers,
Michael

[bencoton]

Hi Michael,

1st I edited the HX711.h & HX711.cpp files (in the HX711_Arduino_Library) using the code above. Then I replaced the ArduinoMenu files in the library with those in the "!Special ArduinoMenu Edited Files" folder supplied in the download.

This then compiled as expected.

Cheers,

Ben

[regnaDkciN]

Hi Ben, Glad to hear that the problem is solved.  After some thought, I think I'll just load the updated HX711 library files to the git hub site for anyone else having the same problem.  The changes to my code would be pretty extensive to do otherwise, and the addition of the const actually makes the library code a little safer. Good luck with the project and please share some pictures when you're done. Joe On Thursday, April 7, 2022, 03:43:09 AM EDT, bencoton ***@***.***> wrote: Hi Joe, Thanks for the help on this - its up and working now. Cheers, Ben — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: ***@***.***>

[regnaDkciN]

Hi Michael, I'll update the github site in the next few days.  Sorry for the missing files, but I completely forgot that I modified them. Joe On Thursday, April 7, 2022, 03:44:42 AM EDT, mmally ***@***.***> wrote: Hi Ben, how did you solve it? Cheers, Michael — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: ***@***.***>

[mmally]

Thank you for the info and the updated files.

In the meantime most parts arrived. I am making minor modifications to the STL to use the same countersunk screw like for the filament roller and I fixed a few OnShape export errors. I also added printed threads in Fusion 360 for a few parts instead of the brass inserts.

I am already looking forward to the assembly of the scale :)

[regnaDkciN]

Sounds great.  This was my first real OnShape project, so you may find some peculiarities as I was just learning it. Thanks for the update, and good luck with your build. On Monday, April 11, 2022, 04:57:07 AM EDT, mmally ***@***.***> wrote: Thank you for the info and the updated files. In the meantime most parts arrived. I am making minor modifications to the STL to use the same countersunk screw like for the filament roller and I fixed a few OnShape export errors. I also added printed threads in Fusion 360 for a few parts instead of the brass inserts. I am already looking forward to the assembly of the scale :) — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: ***@***.***>