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edited Feb 6, 2023 at 20:19

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In file included from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l4xx.h:149, from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/stm32/stm32_def.h:48, from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/stm32/clock.h:19, from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/wiring_time.h:23, from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/wiring.h:38, from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/Arduino.h:36, from C:\Users\User\AppData\Local\Temp\arduino-sketch-B028C48DF91C28F6EAA5B0CE34D27EE2\sketch\Displaylcd1.ino.cpp:1: C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:29: error: expected identifier before '(' token 1326 | #define LCD ((LCD_TypeDef ) LCD_BASE) | ^ c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LCD.h:169:7: note: in expansion of macro 'LCD' 169 | class LCD : public Print | ^~~ C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:43: error: expected ')' before '' token 1326 | #define LCD ((LCD_TypeDef ) LCD_BASE) | ~ ^ c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LCD.h:169:7: note: in expansion of macro 'LCD' 169 | class LCD : public Print | ^~~ C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:43: error: expected ')' before '' token 1326 | #define LCD ((LCD_TypeDef *) LCD_BASE) | ~ ^ c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LCD.h:169:7: note: in expansion of macro 'LCD' 169 | class LCD : public Print | ^~~ C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:29: error: expected class-name before '(' token 1326 | #define LCD ((LCD_TypeDef *) LCD_BASE) | ^ c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h:38:34: note: in expansion of macro 'LCD' 38 | class LiquidCrystal_I2C : public LCD | ^~~ C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:29: error: expected '{' before '(' token 1326 | #define LCD ((LCD_TypeDef ) LCD_BASE) | ^ c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h:38:34: note: in expansion of macro 'LCD' 38 | class LiquidCrystal_I2C : public LCD | ^~~ C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:43: error: expected ')' before '' token 1326 | #define LCD ((LCD_TypeDef ) LCD_BASE) | ~ ^ c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h:38:34: note: in expansion of macro 'LCD' 38 | class LiquidCrystal_I2C : public LCD | ^~~ C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:43: error: expected ')' before '' token 1326 | #define LCD ((LCD_TypeDef *) LCD_BASE) | ~ ^ c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h:38:34: note: in expansion of macro 'LCD' 38 | class LiquidCrystal_I2C : public LCD | ^~~ C:\Users\User\Documents\Arduino\Displaylcd1\Displaylcd1.ino:2:22: error: variable 'LiquidCrystal_I2C lcd' has initializer but incomplete type 2 | LiquidCrystal_I2C lcd(0x27,16,2); /I2C scanned address defined + I2C screen size/ | ^ Multiple libraries were found for "LiquidCrystal_I2C.h" Used: C:\Users\User\Documents\Arduino\libraries\LiquidCrystal Not used: C:\Users\User\Documents\Arduino\libraries\LiquidCrystal_I2C exit status 1

Compilation error: variable 'LiquidCrystal_I2C lcd' has initializer but incomplete type

In file included from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l4xx.h:149,
                 from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/stm32/stm32_def.h:48,
                 from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/stm32/clock.h:19,
                 from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/wiring_time.h:23,
                 from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/wiring.h:38,
                 from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/Arduino.h:36,
                 from C:\Users\User\AppData\Local\Temp\arduino-sketch-B028C48DF91C28F6EAA5B0CE34D27EE2\sketch\Displaylcd1.ino.cpp:1:
C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:29: error: expected identifier before '(' token
 1326 | #define LCD                 ((LCD_TypeDef *) LCD_BASE)
      |                             ^
c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LCD.h:169:7: note: in expansion of macro 'LCD'
  169 | class LCD : public Print
      |       ^~~
C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:43: error: expected ')' before '*' token
 1326 | #define LCD                 ((LCD_TypeDef *) LCD_BASE)
      |                              ~            ^
c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LCD.h:169:7: note: in expansion of macro 'LCD'
  169 | class LCD : public Print
      |       ^~~
C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:43: error: expected ')' before '*' token
 1326 | #define LCD                 ((LCD_TypeDef *) LCD_BASE)
      |                             ~             ^
c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LCD.h:169:7: note: in expansion of macro 'LCD'
  169 | class LCD : public Print
      |       ^~~
C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:29: error: expected class-name before '(' token
 1326 | #define LCD                 ((LCD_TypeDef *) LCD_BASE)
      |                             ^
c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h:38:34: note: in expansion of macro 'LCD'
   38 | class LiquidCrystal_I2C : public LCD
      |                                  ^~~
C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:29: error: expected '{' before '(' token
 1326 | #define LCD                 ((LCD_TypeDef *) LCD_BASE)
      |                             ^
c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h:38:34: note: in expansion of macro 'LCD'
   38 | class LiquidCrystal_I2C : public LCD
      |                                  ^~~
C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:43: error: expected ')' before '*' token
 1326 | #define LCD                 ((LCD_TypeDef *) LCD_BASE)
      |                              ~            ^
c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h:38:34: note: in expansion of macro 'LCD'
   38 | class LiquidCrystal_I2C : public LCD
      |                                  ^~~
C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:43: error: expected ')' before '*' token
 1326 | #define LCD                 ((LCD_TypeDef *) LCD_BASE)
      |                             ~             ^
c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h:38:34: note: in expansion of macro 'LCD'
   38 | class LiquidCrystal_I2C : public LCD
      |                                  ^~~
C:\Users\User\Documents\Arduino\Displaylcd1\Displaylcd1.ino:2:22: error: variable 'LiquidCrystal_I2C lcd' has initializer but incomplete type
    2 | LiquidCrystal_I2C lcd(0x27,16,2);  /*I2C scanned address defined + I2C screen size*/
      |                      ^
Multiple libraries were found for "LiquidCrystal_I2C.h"
  Used: C:\Users\User\Documents\Arduino\libraries\LiquidCrystal
  Not used: C:\Users\User\Documents\Arduino\libraries\LiquidCrystal_I2C
exit status 1

Compilation error: variable 'LiquidCrystal_I2C lcd' has initializer but incomplete type

Compilation error: variable 'LiquidCrystal_I2C lcd' has initializer but incomplete type

In file included from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l4xx.h:149,
                 from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/stm32/stm32_def.h:48,
                 from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/stm32/clock.h:19,
                 from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/wiring_time.h:23,
                 from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/wiring.h:38,
                 from C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\cores\arduino/Arduino.h:36,
                 from C:\Users\User\AppData\Local\Temp\arduino-sketch-B028C48DF91C28F6EAA5B0CE34D27EE2\sketch\Displaylcd1.ino.cpp:1:
C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:29: error: expected identifier before '(' token
 1326 | #define LCD                 ((LCD_TypeDef *) LCD_BASE)
      |                             ^
c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LCD.h:169:7: note: in expansion of macro 'LCD'
  169 | class LCD : public Print
      |       ^~~
C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:43: error: expected ')' before '*' token
 1326 | #define LCD                 ((LCD_TypeDef *) LCD_BASE)
      |                              ~            ^
c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LCD.h:169:7: note: in expansion of macro 'LCD'
  169 | class LCD : public Print
      |       ^~~
C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:43: error: expected ')' before '*' token
 1326 | #define LCD                 ((LCD_TypeDef *) LCD_BASE)
      |                             ~             ^
c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LCD.h:169:7: note: in expansion of macro 'LCD'
  169 | class LCD : public Print
      |       ^~~
C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:29: error: expected class-name before '(' token
 1326 | #define LCD                 ((LCD_TypeDef *) LCD_BASE)
      |                             ^
c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h:38:34: note: in expansion of macro 'LCD'
   38 | class LiquidCrystal_I2C : public LCD
      |                                  ^~~
C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:29: error: expected '{' before '(' token
 1326 | #define LCD                 ((LCD_TypeDef *) LCD_BASE)
      |                             ^
c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h:38:34: note: in expansion of macro 'LCD'
   38 | class LiquidCrystal_I2C : public LCD
      |                                  ^~~
C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:43: error: expected ')' before '*' token
 1326 | #define LCD                 ((LCD_TypeDef *) LCD_BASE)
      |                              ~            ^
c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h:38:34: note: in expansion of macro 'LCD'
   38 | class LiquidCrystal_I2C : public LCD
      |                                  ^~~
C:\Users\User\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.4.0\system/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l476xx.h:1326:43: error: expected ')' before '*' token
 1326 | #define LCD                 ((LCD_TypeDef *) LCD_BASE)
      |                             ~             ^
c:\Users\User\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h:38:34: note: in expansion of macro 'LCD'
   38 | class LiquidCrystal_I2C : public LCD
      |                                  ^~~
C:\Users\User\Documents\Arduino\Displaylcd1\Displaylcd1.ino:2:22: error: variable 'LiquidCrystal_I2C lcd' has initializer but incomplete type
    2 | LiquidCrystal_I2C lcd(0x27,16,2);  /*I2C scanned address defined + I2C screen size*/
      |                      ^
Multiple libraries were found for "LiquidCrystal_I2C.h"
  Used: C:\Users\User\Documents\Arduino\libraries\LiquidCrystal
  Not used: C:\Users\User\Documents\Arduino\libraries\LiquidCrystal_I2C
exit status 1

Compilation error: variable 'LiquidCrystal_I2C lcd' has initializer but incomplete type

Source Link

asked Feb 6, 2023 at 19:26

kristian311

variable 'LiquidCrystal_I2C lcd' has initializer but incomplete type

I have a problem with lcd, I have NUCLEO64 L746RG , I have Lcd Display and I2C connected to it. When I verify code it gives me and long error and I can not find the solution or cause of this error:

Compilation error: variable 'LiquidCrystal_I2C lcd' has initializer but incomplete type

This is my code:

#include <LiquidCrystal_I2C.h>  /*include LCD I2C Library*/
LiquidCrystal_I2C lcd(0x27,16,2);  /*I2C scanned address defined + I2C screen size*/
void setup() {
  lcd.init();  /*LCD display initialized*/
  lcd.clear();     /*Clear LCD Display*/
  lcd.backlight();      /*Turn ON LCD Backlight*/
  lcd.setCursor(2,0);   /*Set cursor to Row 1*/
  lcd.print("I2C LCD Nano"); /*print text on LCD*/
  lcd.setCursor(2,1);   /*set cursor on row 2*/
  lcd.print("Linuxhint.com"); /*print message on LCD*/
}
void loop() {
}

I do not know why, I am not including anything else so why is it giving me this error?

PLEASE HELP, I AM WORKING ON IT for 8 hours AN I STILL COULD NOT FIGURE OUT WHAT IS THE PROBLEM, PLease help