Pete,

thaks for your input yes that was the problem with shifting.
what is the purpose of &  ?

Andre



peteHVAC wrote:

>Hello,
>Not sure if I can help much but it looks like shift_left should be
>output_bit(PS2_DATA_OUT, shift_left(&data,1,0));
>data needs to be a structure or array shift needs the address of data &data
>Not sure about the port. Single step the program and watch for changes?
>
>I'm just starting with CCS too. If you post some more code maybe I can help.
>If you need SPI you should use the built in stuff very easy + lots of
>examples.
>
>If your rewriting PICC\Examples\EX_MOUSE.C maybe you should get that working
>first.
>
>http://www.ccsinfo.com/forum/ is a good place to hang out.
>
>A very good book is PICmicro MCU C by Nigel Gardner ISBN 0-9724181-0-5
>Hope this helps.
>
>Pete
>
>-----Original Message-----
>From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu]On Behalf
>Of Andre Abelian
>Sent: Monday, November 28, 2005 7:42 PM
>To: Microcontroller discussion list - Public.
>Subject: [pic]: Problem with PortB
>
>
>strange
>
>Hi to all,
>
>when I set break point on portB bit 4 other pins turn on too and
>shift_left doesn't work
>I worked on it whole day and I gave up. I appreciate if any one can see
>what I
>am doing wrong. I am not sure if what I put together is real SPI
>interface what
>I wanted to do is to make spi interface. here is partial code.
>I am using 18f452 with mplab ccs plugin
>
>thanks
>
>Andre
>
>
>
>#include <18F252.h>
>#device ADC=8
>#fuses HS,NOWDT,NOPROTECT,NOLVP
>#use delay(clock=4000000)   //
>#use rs232(baud=1200, xmit=PIN_C6, rcv=PIN_C7,errors)  //
>#define MICROSOFT TRUE
>#define MOUSE_SYSTEMS FALSE
>#DEFINE LEFT_BUTTON PIN_B6
>#DEFINE RIGHT_BUTTON PIN_B7
>#DEFINE X_CHANNEL 0
>#DEFINE Y_CHANNEL 1
>#define PS2_CLK_OUT   PIN_B4 //
>#define PS2_DATA_OUT  PIN_B5 //
>#define PS2_CLK_IN  PIN_B1 //
>#define PS2_DATA_IN      PIN_B0 //
>#define LED    PIN_C3
>
>
>
>void ps2_out(BYTE data)
>{
>      BYTE i;
>
>         output_low(PS2_CLK_OUT);  // start bit on
>       for(i=1;i<=8;++i)
>      {
>      output_bit(PS2_DATA_OUT, shift_left(data,1,0));
>      output_high(PS2_CLK_OUT);   //  <= I set break point here
>      output_low(PS2_CLK_OUT);
>      }
>      output_low(PS2_DATA_OUT);
>      delay_ms(11);
>}
>
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>  
>

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