Thanks. This part is totally confusing me. It is supposed to be an "upgrade" of a part I have been using. I guess my time is better spent getting the TI driver to work instead of accessing the registers directly, which is what I had been doing.
On Thu, Oct 29, 2020 at 3:08 PM Dennis Lee Bieber <dennis.l.bie...@gmail.com> wrote: > On Thu, 29 Oct 2020 10:23:39 -0700 (PDT), in > gmane.comp.hardware.beagleboard.user Paul Beam > <rpaulbeam-re5jqeeqqe8avxtiumw...@public.gmane.org> wrote: > > >Does the Beaglebone support 8 bit I2c addresses? I'm using a TI bq28z610 > > Which Beaglebone? > > >which has I2C address 0xAA, but I cannot access it via i2ctools. I can > > Per the BBB TRM (TI SPRUH73P) > """ > 21.1.1 I2C Features > The general features of the I2C controller are: > • Compliant with Philips I2C specification version 2.1 > • Supports standard mode (up to 100K bits/s) and fast mode (up to 400K > bits/s). > • Multimaster transmitter/slave receiver mode > • Multimaster receiver/slave transmitter mode > • Combined master transmit/receive and receive/transmit modes > • 7-bit and 10-bit device addressing modes > • Built-in 32-byte FIFO for buffered read or writes in each module > • Programmable clock generation > • Two DMA channels, one interrupt line > """ > > BB-AI TRM > """ > The multimaster HS I2C controllers have the following features: > • Compliant with Philips I2C specification version 2.1 > • Supports a standard mode (up to 100 kbps) and fast mode (up to 400 kbps) > • Supports HS mode for transfer up to 3.4 Mbps (only for I2C3, I2C4 and > I2C5) > • 7-bit and 10-bit device addressing modes > • General call > • Start/Restart/Stop > • Multimaster transmitter/slave receiver mode > • Multimaster receiver/slave transmitter mode > • Combined master transmit/receive and receive/transmit mode > • Built-in FIFOs (16 bytes) for buffered read or write > • Module enable/disable capability > • Programmable multislave channel (responds to four separate addresses) > """ > > Per > > https://www.totalphase.com/support/articles/200349176-7-bit-8-bit-and-10-bit-I2C-Slave-Addressing#8bit > 8-bit > <https://www.totalphase.com/support/articles/200349176-7-bit-8-bit-and-10-bit-I2C-Slave-Addressing#8bit8-bit> > addressing is not a proper I2C addressing mode. > > Your xAA is probably address x55 with read/write bit 0 (write) > > > > -- > Dennis L Bieber > > -- > 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/o54mpf9itc7hbrl24v98h17cucfkvmjpn1%404ax.com > . > -- 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/CAA_M65N4%3DdHgSbVaOT%3D_Kfd7t_rr2PJNLjK2WNK8Jm6VnUfNnA%40mail.gmail.com.
