OneWire Library / DS1990A

<note: had bunch of links in make easier reference, apparently have have 1 post before can add links...  :-? i'll try add them in reply.>

hi, all. i'm reasonably new arduino, , i'm having smidge of trouble onewire library.

i've grabbed recent copy of jim studt's onewire library , dumped in ./hardware/libraries/ directory. comes fine in arduino.

i attached button reader pin 10 specified 4.7k pull-up resistor, , ground pin (duh) arduino ground.

i copied first example playground's onewire page, verified, , uploaded it. should note commented out following line didn't spammed badly:

code: [select]

     serial.print("no more addresses.\n");

i started serial monitor, , greeted lovely piece of work:

code: [select]

r=0 0 0 0 0 0 0 40 crc not valid!
r=0 0 0 0 0 0 0 c0 crc not valid!
r=0 0 0 0 0 0 0 40 crc not valid!
r=0 0 0 0 0 0 0 c0 crc not valid!
r=0 0 0 0 0 0 0 40 crc not valid!
r=0 0 0 0 0 0 0 c0 crc not valid!
r=0 0 0 0 0 0 0 40 crc not valid!
r=0 0 0 0 0 0 0 0 device not ds18s20 family device.
r=0 0 0 0 0 0 0 0 device not ds18s20 family device.
r=0 0 0 0 0 0 0 80 crc not valid!
r=0 0 0 0 0 0 0 40 crc not valid!
r=0 0 0 0 0 0 0 c0 crc not valid!
r=0 0 0 0 0 0 0 40 crc not valid!
r=0 0 0 0 0 0 0 c0 crc not valid!
r=0 0 0 0 0 0 0 40 crc not valid!
r=0 0 0 0 0 0 0 c0 crc not valid!

it appears reading nothing. contact reader nothing pair of metal contacts ds9092, unless there's button on contacts nothing should read.

the 2 lines in middle when press , hold ibutton ds1990a on contact. can see, it's reading zeroed address family, id, , crc, is... useless.

i've read other threads, , closest thing found problem involved removing onewire.o file , letting arduino recompile that. fixed error, alas, not mine.

any appreciated.

here links mentioned:

jim studt's onewire library

the playground's onewire page

the ds9092

the other thread

i should mention have arduino duemilanouve atmega 328, running v15 under ubuntu 9.04 (jaunty). have used arduino number of other test projects far.

Arduino Forum > Forum 2005-2010 (read only) > Software > Syntax & Programs > OneWire Library / DS1990A

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