Hello,
>Also comparing your circuit with the one on page 25 of the DS2480B manual
>http://datasheets.maxim-ic.com/en/ds/DS2480B.pdf
>you have the POL pin at ground, and they have it at +VDD. Could you have
>polarity reversed?
That is because the MAX232 has a inverter stage build in and negates the signal
(Please refer to page 25 figure 11b in
http://datasheets.maxim-ic.com/en/ds/DS2480B.pdf)
I tried again using an oscilloscope. I see some signal changes on the tx line.
a) I wonder what to expect
however. A screenshot of an oscilloscope or an equivalent description of the
detection sequence would be really helpful :-)
b) Looking through the code in DS2480_detect ( ow_ds9097U.c) suggest that
there should be some activity on the RX line as well during the detection
sequence. Is this correct ?
c) Is there some activity to be expected on the OW bus during the detect
sequence ?
d) Any suggestions how to narrow this done ? Would it for instance help to
instrument the detect sequence and see where it bails out ?
Thanks
Tilman
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