Associate III

Question

identifier "xxxx" undefined

Forum|Forum|7 years ago
March 11, 2019
7 replies
2799 views

i have project code when i compile it shows identifier is undefined

But i have included the path keil linker options and included header file also, i don't know why it shows like this.

when i click the definition of VL53L0A1_GPIO1_R_INTx it doesn't go to definition part.But the definition is written in the code.

Help me please.

my error:

..\..\Drivers\BSP\X-NUCLEO-53L0A1\X-NUCLEO-53L0A1.c(532): error: #20: identifier "VL53L0A1_GPIO1_R_INTx" is undefined

thank you in advance.

This topic has been closed for replies.

Senior III

> when i click the definition of VL53L0A1_GPIO1_R_INTx it doesn't go to definition part.But the definition is written in the code.

What exactly do you talk about ?

Working with an Eclipse toolchain?

Mind you, what the parser sees is not necessary what the compiler sees.

NS.16Author

Associate III

I am working in keil

Guru

So project perhaps lacks required command line defines, or include paths.

Lacks required include files.

Doesn't flag appropriate modules in stm32f4xx_hal_conf.h or equivalent.

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NS.16Author

Associate III

i have included the path of that file.

Senior III

That was not the point.

If you e.g. place an "#error" preprocessor directive in the line above your definition of "VL53L0A1_GPIO1_R_INTx", does the build throw this # error ?