[Sdcc-user] =?us-ascii?Q?Re=3A=20=5BSdcc=2Duser=5D=20SDCC=20PIC14=20port=3A=20libsdcc=2Elib=3A=20No=20such=20file=20or=20directory?=

[<vac...@se...>]

Hi Raphael,

> ------------ Puvodni zprava ------------
> Od: Raphael Neider <RN...@we...>
>> 
> 
> Wait one or two days, download and install SDCC and try again, sorry...
> 

Thanks for solution, I will try to get new version on friday.

> > BTW: In SDCC version 2.4.0 following part of code did not work. PIC always
> sent 0x80000000. Is there something that I can't use ?
> > 
> > void spi_senddata( void)
> > {
> >   char i;
> >  unsigned long int tmpdat = 0xffff00ff;
> > 
> >   for (i = 0; i<32; i++) {
> >     if((tmpdat & 0x80000000) != 0) {
> >       PORTB |= SPI_TDI;
> >     } else {
> >       PORTB &= (~SPI_TDI);
> >     }
> >     // rising edge of SPI_CLK
> >     PORTB &= (~SPI_CLK);
> >     PORTB |= SPI_CLK;
> > 
> >     tmpdat <<= 1;
> >   }
> > }
> 
> I checked the .asm output from SDCC 2.5.4 #1151---looks good to me. If 
> you still have problems please report back with your values for SPI_TDI 
> and SPI_CLK.
> 

I found the problem in version 2.4.0 the function was compiled incorrectly - memory for 32 bits was not initialized after the start of function. For the reference ASM output follows. I hope the bug was removed intentionally. Sorry for email longer than necessary.

Regards,
Vaclav

_spi_senddata	;Function start
; 2 exit points
;#CSRC	jtagenb.c 55
;  void spi_senddata( WORD32 dat)
	BANKSEL	r0x49
	MOVWF	r0x49
	MOVF	s0x7F,W
;;104	MOVWF	r0x4A
	MOVF	s0x7E,W
;;102	MOVWF	r0x4B
	MOVF	s0x7D,W
;;100	MOVWF	r0x4C
;#CSRC	jtagenb.c 60
;  for (i = 0; i<32; i++) {
	CLRF	r0x4D
_00116_DS_
	MOVF	r0x4D,W
	MOVWF	r0x4E
	CLRF	r0x4F
	BTFSC	r0x4D,7
	DECF	r0x4F,F
	BTFSC	r0x4F,7
	GOTO	_00125_DS_
	MOVLW	0x00
	SUBWF	r0x4F,W
	MOVLW	0x20
	BTFSC	STATUS,2
	SUBWF	r0x4E,W
	BTFSC	STATUS,0
	GOTO	_00120_DS_
;;105	CLRF	r0x50
;;107	CLRF	r0x51
;;109	CLRF	r0x52
_00125_DS_
;#CSRC	jtagenb.c 61
;  if((tmpdat & 0x80000000) != 0) {
	MOVLW	0x80
	ANDWF	r0x49,W
	MOVWF	r0x53
;;106	MOVF	r0x50,W
;;     peep 7 - Removed redundant move
	MOVF	r0x53,W
	BTFSC	STATUS,2
	GOTO	_00114_DS_
;#CSRC	jtagenb.c 62
;  PORTB |= SPI_TDI;
	BCF	STATUS,5
	BCF	STATUS,6
	BSF	_PORTB,2
	GOTO	_00115_DS_
_00114_DS_
;#CSRC	jtagenb.c 64
;  PORTB &= (~SPI_TDI);
	BCF	STATUS,5
	BCF	STATUS,6
	MOVF	_PORTB,W
	BANKSEL	r0x54
	MOVWF	r0x54
	MOVLW	0xfb
	ANDWF	r0x54,W
	BCF	STATUS,5
	BCF	STATUS,6
	MOVWF	_PORTB
_00115_DS_
;#CSRC	jtagenb.c 67
;  PORTB &= (~SPI_CLK);
	MOVF	_PORTB,W
	BANKSEL	r0x55
	MOVWF	r0x55
	MOVLW	0xfd
	ANDWF	r0x55,W
	BCF	STATUS,5
	BCF	STATUS,6
	MOVWF	_PORTB
;#CSRC	jtagenb.c 68
;  PORTB |= SPI_CLK;
	BSF	_PORTB,1
;;99	MOVWF	r0x4C
;;101	MOVWF	r0x4B
;;103	MOVWF	r0x4A
;#CSRC	jtagenb.c 70
;  tmpdat <<= 1;
	BANKSEL	r0x49
	MOVWF	r0x49
;#CSRC	jtagenb.c 60
;  for (i = 0; i<32; i++) {
	INCF	r0x4D,F
	GOTO	_00116_DS_
_00120_DS_
	RETURN	
; exit point of _spi_senddata