max517 don't work

[mischl]

i have a dac max517 in my application which won't run :

schematic:

            |--V--|
v-meter ----|     |---- Vdd (Ref0)     
gnd     ----|     |---- Vdd
scl     ----|     |---- gnd (AD0)
sda     ----|     |---- gnd (AD1)
            |-----| 

code:

slad con %01011000 ' slave address 00
comb con %00000000 ' command byte

volt var byte ' output voltage

init : clear

high sda
high scl

volt = 255

SHIFTOUT sda, scl, 5, [slad, %0\1, comb,  %0\1, volt,  %0\1]

as result : the v-meter output stays ever 0V. can't see what i make wrong. thanks for any help

[mister_e]

try I2CWRITE instead.. it's still an I2C device

SDA            var PORTB.0 
SCL            var PORTB.1

Loop           var Byte

DACAddressByte CON %01011000 ' DAC Address byte
DACCommandByte con 0         ' DAC command byte

start: 
    '
    '     this loop will generate simple ramp-up and down
    '     on the DAC output
    ' 
    For Loop = 0 To 255
        i2cwrite sda,scl,DACAddressByte,DACCommandByte,[Loop]
        pause 10       
        Next



    For Loop = 255 To 0 Step -1
        i2cwrite sda,scl,DACAddressByte,DACCommandByte,[Loop]
        pause 10       
        Next

    GoTo start

[mischl]

so it works fine, i just include some pull-ups

was me really a help, thanks again