Re: [Sdcc-user] Multiplication problems on SDCC for PICs

[Martyn W. <we...@co...>]

Hi Diego,

Have you written an implementation of the putchar() function for your
hardware implementation?

Due to the many varied ways in which printf() could be used, for
example: RS232 comms to displaying on a 2x40 character LCD display, you
need to define your own putchar() function which is utilised by printf()
when it needs to display a character.

Martyn

On Mon, 2005-09-26 at 09:45 -0300, Diego Manenti Martins wrote:
> Hi,
> I doownloaded the sdcc-snapshot-i586-mingw32msvc-20050926
> and when I try to compile a test source I give this error:
>=20
> C:\projeto\testesdcc>sdcc -mpic14 -p16f877 main.c
> Processor: 16f877
> main.c:4: warning 85: in function putchar unreferenced function
> argument : 'c'
> message: using default linker script "C:\Program Files\gputils\lkr
> \16f877.lkr"
> error: missing definition for symbol "_printf", required by "main.o"
>=20
> C:\projeto\testesdcc>
>=20
> Is not possible to use printf with pic14?
>=20
> Thank you!
>=20
--=20
Martyn Welch (we...@co...)

PGP Key : http://ubicomp.lancs.ac.uk/~martyn/pgpkey.html