ucos ii and c++ compiler

I wrote your declaration in my .h file and the compiler passes it fine

Then it must be something above line 752. Often you get compiler errors on lines following the line which actually causes problems.
The error messages 'expected an expression' and 'expression must have (pointer-to-) function type' might mean that the compiler thinks that it is processing the body of a function.
Perhaps it would be a good idea to post some code preceeding line 752 here.

I wrote your declaration in my .h file and the compiler passes it fine

Then it must be something above line 752. Often you get compiler errors on lines following the line which actually causes problems.
The error messages 'expected an expression' and 'expression must have (pointer-to-) function type' might mean that the compiler thinks that it is processing the body of a function.
Perhaps it would be a good idea to post some code preceeding line 752 here.

that's line 752

#if OS_TASK_CREATE_EXT_EN > 0

I did that
#ifdef __cplusplus
INT8U OSTaskCreateExt(void (*INT16U)(void *pd),
#else
INT8U OSTaskCreateExt(void (*task)(void *pd),
#endif

and it compiles.
I tried the modification in my c project and I downloaded the firmware on my board and it works .. but I don't like to just trick the code without understanding why it works.
Thanks very much for your help

As I said, changing "task" to INT16U it compiles .. but I still have a linker problem

*** ERROR L127: UNRESOLVED EXTERNAL SYMBOL SYMBOL: _main MODULE: ..\Obj\main.obj (MAIN)
*** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL SYMBOL: _main MODULE: ..\Obj\main.obj (MAIN) ADDRESS: A60DH
*** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL SYMBOL: _main MODULE: ..\Obj\main.obj (MAIN) ADDRESS: A60EH

Do you have any suggestion? The main is declared in main.cpp as int main(void){ .. }

That's what I wrote in my main.cpp

and that's waht I found checking the main.ic

int main(void)
{ INT8U ucErr; static INT16U sdata Ram_test_result = 0; static INT16U sdata led_blink = 0; static INT16U sdata led_switch = 0;

#define LED_TIMEOUT 40000

//SignInit(); P7_P7 = 0; //disable bypass scr CC1_SEE = 0x0000; //disabilita gli out-compare CC1_OUT_CC6IO = 0; //disable input scr R P1L_P0 = 0; //disable input scr T P1L_P1 = 0; //disable input scr S P9_P5 = 0; //disable battery+ scr P1L_P7 = 0;

#line 549
int main(void)
{

static INT16U sdata Ram_test_result = 0U;
static INT16U sdata led_blink = 0U;
static INT16U sdata led_switch = 0U;
#line 551
auto INT8U ucErr;
#line 550
_main();
#line 559
P7_P7 = 0U;
CC1_SEE = ((unsigned int)0U);
CC1_OUT_CC6IO = 0U;

.. it seems it add a call to function _main() and that is the error I get.

I defined just one main in my main.cpp and than I found that the compiler has added, as I showed, a _main(); function call in my main().

Maybe there is something wrong in my main declaration. Should I have to do something different?

I cannot understand your comment. Again, thank oyu very much, this c++ conversion is far more difficult that I was expected it would be .. and i'm just changing main.c in .cpp .. there are a lot of files to be converted! :(

Standard C/C++ rule. Your C library expects a C main. Most c++ compilers manages this themselves, but try with extern "C" main, to make sure that the external symbol will be named _main.

/pwm

A C function named _main() will have an external binding __main (i.e. two underscores).

A C++ function named _main() may have just about any strange name, that somewhere constains the _main sub-string.

Searching "_main" in keil help I found that the c++ keil compiler (EC++) requires to call the _main() function at the beginning of the main() function.
This function mainly contains new/delete functions for C++ operator new/delete.