AllProtocols compilation errors and warnings with serial LCD

[gitterman]

Yesterday I installed this promising project using the library manager in the arduino IDE 1.18.12. I attached an IR detector and an I2C display to an arduino nano as shown in your pictures. I tested the LCD with a hello world sketch and it worked at the default address 0x27. I tried the simpleReceiver and this also worked well with a NEC remote. But I want to build a standalone IR remote detector. So I compiled the AllProtocols example with the USE_SERIAL_LCD define and get the errors below.

In file included from D:\Peter\Development\Arduino\libraries\IRMP\src/irmp.c.h:26:0,
from D:\Peter\Development\Arduino\AllProtocols\AllProtocols.ino:54:
D:\Peter\Development\Arduino\libraries\IRMP\src/irmp.h:131:4: warning: #warning MERLIN protocol disabled, IRMP_32_BIT=1 needed [-Wcpp]
# warning MERLIN protocol disabled, IRMP_32_BIT=1 needed
^~~~~~~
D:\Peter\Development\Arduino\libraries\IRMP\src/irmp.h:243:4: warning: #warning F_INTERRUPTS too low, LEGO protocol disabled (should be at least 20000) [-Wcpp]
# warning F_INTERRUPTS too low, LEGO protocol disabled (should be at least 20000)
^~~~~~~
D:\Peter\Development\Arduino\libraries\IRMP\src/irmp.h:279:4: warning: #warning F_INTERRUPTS too low, RCMM protocol disabled (should be at least 20000) [-Wcpp]
# warning F_INTERRUPTS too low, RCMM protocol disabled (should be at least 20000)
^~~~~~~
AllProtocols:63:32: error: 'LCD_COLUMNS' was not declared in this scope
LiquidCrystal_I2C myLCD( 0x27, LCD_COLUMNS, LCD_ROWS ) ; // set the LCD address to 0x27 for a 20 chars and 2 line display
^~~~~~~~~~~
D:\Peter\Development\Arduino\AllProtocols\AllProtocols.ino:63:32: note: suggested alternative: 'LCD_2LINE'
LiquidCrystal_I2C myLCD( 0x27, LCD_COLUMNS, LCD_ROWS ) ; // set the LCD address to 0x27 for a 20 chars and 2 line display
^~~~~~~~~~~
LCD_2LINE
AllProtocols:63:45: error: 'LCD_ROWS' was not declared in this scope
LiquidCrystal_I2C myLCD( 0x27, LCD_COLUMNS, LCD_ROWS ) ; // set the LCD address to 0x27 for a 20 chars and 2 line display
^~~~~~~~
D:\Peter\Development\Arduino\AllProtocols\AllProtocols.ino: In function 'void setup()':
AllProtocols:106:11: error: 'class LiquidCrystal_I2C' has no member named 'init'
myLCD.init() ;
![i2c](https://user-images.githubusercontent.com/10762929/87241092-f1eb9580-c41f-11ea-8e18-b13d43cc50ca.jpg)

[ArminJo]

And what do you think is missing?

[gitterman]

Sorry for not being clear enough. The "AllProtocols" example does not compile with the serial display, so it doesn't work. Which is kind of strange as the example pictures and the link to the instructables just use this setup.

[ArminJo]

And the error messages are there for fun und to confuse the russians?

[ArminJo]

Hint: look in the PinDefinitionsAndMore.h file.

[gitterman]

Thanks for the hint, I already had enabled USE_1602_LCD before but it also gave an error so I did comment it again. The real error was the last line which says: T:\TMP\arduino_modified_sketch_501943\AllProtocols.ino: In function 'void setup()': AllProtocols:115:11: error: 'class LiquidCrystal_I2C' has no member named 'init' myLCD.init(); I found that I had an old version of the LiquidCrystal_I2C library which I had installed manually 2 years ago. After I have removed it and installed the library using the library manager it now works like a charm

[ArminJo]

Thanks for the advice 👍 I added a comment to use the new library version.