error 12 called objet is not a function

[alejandro1957]

What is?
I'm writing a code to communicate with a module HMC5883L(already working with GCBasic).

long EjeX,EjeZ,EjeY;
............................
EjeX=(X_Tmp[0]<<8)|X_Tmp(1);
EjeZ=(Z_Tmp[0]<<8)|Z_Tmp(1);
EjeY=(Y_Tmp[0]<<8)|Y_Tmp(1);

these last three lines in a void i give two error for each lines

error 12: called object is not a function
error 47: indirections to different types assignament

What am I doing wrong??

[Charlie H]

Alejandro,

Is Tmp(1) supposed to be Tmp[1]? And it isn't clear about what you are trying to do with that part of the statement. Is there a missing operator? (+ or *)?

Regards,

Charlie H.

Science has proven what cat owners have always known - cats can understand what we say, the just don't care.

---

From: alejandro1957 alejandro1957@users.sf.net
To: [sdcc:discussion] 1865@discussion.sdcc.p.re.sf.net
Sent: Monday, April 28, 2014 3:08 PM
Subject: [sdcc:discussion] error 12 called objet is not a function

What is?
I'm writing a code to communicate with a module HMC5883L(already working with GCBasic).

long EjeX,EjeZ,EjeY;
............................
EjeX=(X_Tmp[0]<<8)|X_Tmp(1);
EjeZ=(Z_Tmp[0]<<8)|Z_Tmp(1);
EjeY=(Y_Tmp[0]<<8)|Y_Tmp(1);

these last three lines in a void i give two error for each lines

error 12: called object is not a function
error 47: indirections to different types assignament

What am I doing wrong??

---

error 12 called objet is not a function

---

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[alejandro1957]

It is the error.
Thank you.
I'm learning a little at a time.Thank you again.
Should create a WORD long with two integer variables they read MSB and LSB of the response form for each axis.
Axis = (MSB << 8) | LSB

[alejandro1957]

yet another question.
there is a function Atan2 at SDCC?

[Raphael Neider]

There is only the float variant atan2f() available; double support is probably not available for pic14. To make user of this library routine, you need to link with libm.lib, e.g., by using

sdcc (options) (file names) -lm

Note that devices with enhanced cores (those that link with libsdcce.lib rather than libsdcc.lib) need to link with libme.lib instead of libm.lib and thus need to use -lme instead of -lm.

[alejandro1957]

thanks.
to conclude.
how can I send a long value with the sign through a serial port.
in GCBasic was StrPrint function to convert a long value into a string.
thanks in advance.

[Philipp Klaus Krause]

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On 01.05.2014 19:56, alejandro1957 wrote:

thanks. to conclude. how can I send a long value with the sign
through a serial port. in GCBasic was StrPrint function to convert
a long value into a string. thanks in advance.

snprintf() or similar an be used to onvert a long into a string.

Philipp

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[alejandro1957]

okay.
but I have seen the function _ltoa (unsigned long, char *, unsigned char) in the library stdlib.h
I did not understand how to use it.

[alejandro1957]

I wrote two lines to test this function

include <pic16f877a.h>
include <stdlib.h>
include <stdio.h>
include <Delay.h>

code int __at 0x2007 CONFIG = _XT_OSC & _WDT_OFF & _PWRTE_ON & _BODEN_ON & _LVP_OFF & _CPD_OFF & _WRT_OFF & _DEBUG_ON & _CP_OFF;

void Init_config()
     {
      TRISA=0b000000;
      TRISB=0b00001000;
      TRISC=0b00011000;
      TRISD=0b00000000;
      TRISE=0b000;
      PORTA=0b000000;
      PORTB=0b00000000;
      PORTC=0b00000000;
      PORTD=0b00000000;
      PORTE=0b000;
      INTCON=0b00000000;
      CCP1CON=0b00000000;
      CCP2CON=0b00000000;
      ADCON0=0b00000000;
      ADCON1=0b00000110;
     }

void main()
     {
      char buffer[16];
      char *Linea;
      Init_config();
      Delay_ms(1000);
      while(1)
           {
            Linea=_ltoa(64000,buffer,10);
           }
     }

and gives me this error:
error 47: indirections to different types assignment
where am I wrong?

[Raphael Neider]

I'm sorry to inform you that the C standard library is basically not available for SDCC/pic14 targets. You will have to implement ltoa() or sprintf() yourself (or grab existing code and compile it along with your project).
Regarding the error, the complete error message in my recreated test case is

ltoa.c:9: error 47: indirections to different types assignment   
from type 'void fixed'
  to type 'char generic* fixed'

which even tells us that _ltoa does return void, which cannot be assigned to char *.
Let me state again that the pic14 backends do not have a libc implementation available. stdio.h and stdlib.h (and _ltoa()) are taken from the default SDCC libc, which is not used/implemented for pic14. You need to provide the conversion routines in your own code. You can try to copy the code from SDCC's _ltoa() (and _ultoa()) implementations by downloading SDCC source archives and looking at device/lib/_ltoa.c.

Raphael

[alejandro1957]

ok, thanks