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orgua / OneWireHub

OneWire slave device emulator
GNU General Public License v3.0
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CRC failure in DS2408 #61

Open sabas1080 opened 6 years ago

sabas1080 commented 6 years ago

Hi @orgua

I have been able to work the example of the DS18b20 in a SAMD21 with the following modifications https://github.com/orgua/OneWireHub/pull/59

but I get the following error when trying the example of DS2408

CRC failure in DS2408 at 2900000824DA008A

orgua commented 5 years ago

i need more information! please work through the help-section of the readme.md, especially the last point

papvlieg commented 2 years ago

Hi @orgua,

I have the same problem as described by sabas1080. I connected two arduino nano's (pin D10 to pin D8 with 4k7 pullup resistor). They are at close distance on a breadboard.

The first acts as a master using the OneWire lib example: DS2408_Switch, the second as a DS2408 using the OneWireHub lib example. The output of the master is (each second):

Reading DS2408 2900000824DA008A CRC failure in DS2408 at 2900000824DA008A No more addresses.

I also tried to disable the CRC check but the 8 DS2408 pin states are all 1, while pin state 3 should be 0 according to the example code (and the serial output shows that it is zero).

What am I doing wrong?