I take back what I said about a non standard read sequence. I re-read the data sheet, and they describe a standard concatenated write/read sequence for a single byte read. But I do note that they do not describe a simple read only sequence, where the part would start reading from the last register position.
A lot of the tools do not actually do the concatenated write/read, but instead do a separate write-stop, read-stop. I have not seen a I2C part that would not accept this. Do you have another "trusted" I2C device you could parallel across the bus as a test device? I use an MCP9808 temperature sensor on most of my boards when bringing up a new design. Or as suggested by David, put a bus analyzer on the bus to see if the chip is not sending good data, or the Beaglebone is loosing the good data when the chip sends it. --- Graham == On Fri, May 12, 2017 at 10:56 AM, David Lechner <da...@lechnology.com> wrote: > On 05/12/2017 10:48 AM, 'Torsten K.' via BeagleBoard wrote: > >> >> So, I'm still convinced that it has to do with the hardware and/or the >> setup of the I²C bus of the beaglebone... >> >> Where else could I look? >> > > Have you stuck an oscilloscope or logic analyzer on it to see what is > actually on the bus? > > What are the pinconf settings for the I2C pins? > > -- > For more options, visit http://beagleboard.org/discuss > --- You received this message because you are subscribed to a topic in the > Google Groups "BeagleBoard" group. > To unsubscribe from this topic, visit https://groups.google.com/d/to > pic/beagleboard/-cVwfP40L0M/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > beagleboard+unsubscr...@googlegroups.com. > To view this discussion on the web visit https://groups.google.com/d/ms > gid/beagleboard/1b6acd0b-c3c9-b8bd-8d58-1c3f1d0d670c%40lechnology.com. > > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CANN_KV6OAe4SG%3DOy3LNk-0ooV%3Dq16VFyEJXEa00hwwrwsWRGTg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
