Mick Sulley <mick <at> sulley.info> writes: > > Hi Guy, > I am testing owfs on a Pi as well. I have 6 temperature sensors and 3 8 > channel I/O boards and I continually read all of them, takes about 9 > seconds to get around them all. All of the files in /statistics/errors > are zero, indicating no errors, however the code I am running logs each > time it tries to read and it is not able to, and I am seeing a > considerable number of no reads. Investigations on going but it does > seem that there is a much higher incidence of no reads with temperature > sensors than with I/O. > > I started the tests using a Sheepwalk Electronics RPI2 adapter, which is > specifically designed for the Pi, and I suspected that this may be the > problem and so switched to a DS9490 USB adapter, but the no reads continue. > > Do you know if you are experiencing no reads? > > Cheers > Mick > > On 01/02/13 15:33, Guy COLIN wrote: > > Just to give information about owfs running on Raspberry pi, with latest > > Raspbian and owfs from the repository of the distribution. > > Everything is just perfect: > > For testing purpose, I ran it for 2 weeks continuously on a USB DS9490B > > adaptor and 1 temperature sensor DS1820B polling readings every 5 minutes > > without any errors, everything perfectly stable (some reports were done here > > about instability on USB) > > I have now my home automation system running on the Raspberry pi onboard > > serial port ttyAMA0 to a 1wire 6 ports hub (5 Temp; 1 Humid; > > 1LCD+3push buttons; 1 8xI/O board to drive the central heating boiler) > > from January 5 without any errors. I poll data every 5 minutes, I have no > > error in my own logs (no measure out of range), and no errors in > > /mnt/1wire/statistics/errors. > > Everything is fine and perfect. > > My site is visible here http://gcolin.hd.free.fr/ > > Thanks again to owfs development team > > -- > > Guy > > > > ------------------------------------------------------------------------------ > Everyone hates slow websites. So do we. > Make your web apps faster with AppDynamics > Download AppDynamics Lite for free today: > http://p.sf.net/sfu/appdyn_d2d_jan >
Hi Mick, No I'm not experiencing any no read. I read all my devices every 5 minutes, and log any inconsistent value. The no read will be recorded and reported in my graphics trends with a grey color. It happen sometimes when I disconnect the 1wire network. I am now running a home made rs232 adaptor based on MAX3232CPE similar to thishttp://codeandlife.com/2012/07/01/raspberry-pi-serial-console-with- max3232cpe/ This adaptor is connected to a 1wire hobbyboard 6 chanel hub Before the Raspberry I had an old PC Pentium1 233MHz and 2 home made serial port/1wire adaptors and fom times to times I had inconsistent values recorded, usualy 85 degres for the temp (which means short circuit on temp sensor I believe) and I logged these values in my own logs. I used to have 3 or 4 days without errors then several a day, let's say an average of 2 a day. But now with the Raspberry and this config: Zero error since January 5. Your config is different since you use a I2C to 1wire, but you stil have no reads with a usb adaptor... I don't know May be your software. I have run on usb adaptor with 1 temp sensor for 2 weeks without errors. Are you running the latest Raspbian with owfs from the Raspbian repository? Good day -- Guy ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_jan _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
