McMurry
Member level 3
Not sure if this is the correct category to ask this sort of question but anyway, hope someone can help me to understand more about the 1-wire protocol.
when reading a bit from the one -wire bus...
and the device im using is ds1820 digital thermometer
we need to pull DQ low
then pull the DQ line back to high
then delay for approx 15 microsec before returning the bit value of DQ line.
just wondering what is the purpose of the first few steps of pulling it low and pulling it back to high at the next instance..
Thanks a lot. Hope to understand more of its operation.
when reading a bit from the one -wire bus...
and the device im using is ds1820 digital thermometer
we need to pull DQ low
then pull the DQ line back to high
then delay for approx 15 microsec before returning the bit value of DQ line.
just wondering what is the purpose of the first few steps of pulling it low and pulling it back to high at the next instance..
Thanks a lot. Hope to understand more of its operation.