Need help for reading I2C Sensor

[Omalik]

I tray out

I2CRead I2C_data,I2C_clock,$F1,0,[druck,druck2]

but it does not work at all. I find a lot of examples for Eeprom but not one for the sensor I use.

does some have any idea ?

Thanks

[PJALM]

I tray out

I2CRead I2C_data,I2C_clock,$F1,0,[druck,druck2]

but it does not work at all. I find a lot of examples for Eeprom but not one for the sensor I use.

does some have any idea ?

Thanks

From what I can see in the data sheet you should be using this:

I2CRead I2C_data,I2C_clock,$F1,[druck,druck2]

I don't know what the 0 you had there was for but the R/W bit is set by the I2CRead/I2CWrite command, you don't need to set it.

also check what you have druck and druck2 declared as, byte or word.

[skimask]

From what I can see in the data sheet you should be using this:
I2CRead I2C_data,I2C_clock,$F1,[druck,druck2]
I don't know what the 0 you had there was for but the R/W bit is set by the I2CRead/I2CWrite command, you don't need to set it.

Probably should be using $F0 instead of $F1 also.

[Omalik]

i did a picture on the KO.
blue is clock and red are data.

and i can not read the sensor.

[Omalik]

Probably should be using $F0 instead of $F1 also.

see datasheet

[skimask]

see datasheet

Right...and PBP handles the R/W bit for you...as stated a few posts above.

[Omalik]

Now the sensor is working well

Thanks for all your help

The code I use is:



I2CRead I2C_data,I2C_clock,$F1,[druck]

an to calculate the mbar:

IF druck > 1999 then ' nur positive Druck auswerten

druck = ((druck - 2000) * 6) + ((druck - 2000) /4) ' * 25 / 100

else
druck = 0

endif
see also the printscreen from the I2C bus.

[PJALM]

I am glad to see that you got it working