Error: A #DEVICE required before this line

[Skipper]

in main.c:

#include <led.h>

void main (void)
{
.....
led();
.....
}

in led.c

void led (void)
{
...
}

The declaration of the function led is in led.h

Where is my mistake in my code ?

[Will Reeve]

You need to tell the compiler what PIC you are using via #device have a look at the example files. This is usually included in a .h file.

Will

[Ttelmah]

Where is your #device?.
#device is needed right at the start of the code, to define what processor to compile for. It can either be the first line of 'main', or can be the first line of the very first 'include' file. Without this, code will not compile.
Normally, most people #include the processor defintion file (so for a 16F84, #include <16F84.h>), as the first line of their code, which contains the #device command for the processor, and a lot of other useful (necessary in most cases) defintions.

Best Wishes

[Skipper]

I have the device include file in my main.c

#include <16F684.h>
#include <led.h>

void main (void)
{
.....
led();
.....
}

Sorry I´ve forgotten it in my Posting

[Haplo]

Do you have any other #include statements (or other C statements) before the #include <16F684.h> line by any chance?

[Skipper]

No, here´s my small test code:

main.c

#include <16F684.h>
#include <C:\Projekte\Sinus_Wechselrichter\Software\status_led.h>

void main(void);
void polling_mode(void);

void main(void)
{
polling_mode();
}

void polling_mode(void)
{
while(1)
{
led();
}
}

led.c
#include <C:\Projekte\Sinus_Wechselrichter\Software\status_led.h>

void led(void)
{
LED_ON;
LED_OFF;
}

led.h
#include <C:\Projekte\Sinus_Wechselrichter\Software\board.h>

#define LED_ON (output_high(STATUS_LED))
#define LED_OFF (output_low(STATUS_LED))

void led(void);

board.h
#define STATUS_LED PIN_A0

!!! Thank´s for help !!!

[asmallri]

status_led.h is being included in the main line and in led.c

also where do you actually include led.c?
_________________
Regards, Andrew

http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!!

[Ttelmah]

How is 'LED.C', ever going to be used?.
CCS, does not support a linker, and requires that the entire program is in one module, or train of modules. LED.C, has to be included just like a .h file, before it will become part of the code.

Best Wishes

[Skipper]

Hi,

Today I tried to include the led.c in my main.c, the function "led();" are defined in led.h (not status_led.h - my mistake). But when I call led(); in my main file, the error "Function used but not defined: led" appears.

I want to call a function in a c-File (for example: main.c) which is in a other c-File (for example led.c), in my Keil Compiler for Atmel there is no problem. Is it possible to do that with the CCS Compiler too ? If yes - how ?

[Skipper]

I made a mistake with the c-File Name, so now the compiler knows all functions.

But an error: "A #DEVICE required before this line" is already there.
I divined the processor in main.c with the include file #include <16F684.h> there is #device....

Must I devine the #divice in all c-Modules ?

Thanks for help !!!

[Haplo]

You only need one #device statement, and the best place to put it is the at the very first line of your code. To do this, just make sure the first line of your code is #include <16F684.h>.

[Skipper]

Now I found my problem:

I put all source files in the Ordner "Source Files" in MPLAB, when I compiled the Error appears "A Device, ...."

So now I put only the main.c in the Ordner "Source Files" in this ordner the device is defined.
And the other c-Files I put in the Ordner "Other Files" - this works !!!

So I can see all Source Files in MPLAB, can edit it an the copilation is O.K. !

Thank´s all for help !!!