Graham: Yes, it works without configuring, but why does it stop working when configured to be i2c? And why does it start working when configured to be gpio? That's the opposite of what I'd expect.
--Mark On Wednesday, September 5, 2018 at 5:12:06 PM UTC-4, Graham wrote: > > Mark: > > That bus is configured by default, so you should not have to configure it > to use it. > It is the bus used to probe for and talk to the memory chip on equipped > capes. > Try using the I2C-2 bus without configuration. It should just work. > > --- Graham > > == > > On Wed, Sep 5, 2018 at 3:04 PM Mark A. Yoder <[email protected] > <javascript:>> wrote: > >> I'm using the i2c bus 2 that appears on P9_21 and P9_22 on the Bone Black. >> >> If I run: >> bone$ *config-pin P9_21 i2c* >> bone$ *config-pin P9_22 i2c* >> >> My i2c bus doesn't work, but if I run: >> bone$ *config-pin P9_21 gpio* >> bone$ *config-pin P9_22 **gpio* >> >> it does? What's up? >> >> --Mark >> >> sudo /opt/scripts/tools/version.sh >> [sudo] password for debian: >> git:/opt/scripts/:[ed7dd4c61a9c9307b08db8a7dcbaffac77a7f776] >> eeprom:[A335BNLT0A5C3513BBBK3281] >> model:[TI_AM335x_BeagleBone_Black] >> dogtag:[BeagleBoard.org Debian Image 2018-07-02] >> bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot >> 2018.03-00002-gac9cce7c6a]:[location: dd MBR] >> bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot >> 2016.03-00001-g9a81f4a]:[location: dd MBR] >> kernel:[4.18.1-bone4] >> nodejs:[v6.14.3] >> uboot_overlay_options:[enable_uboot_overlays=1] >> uboot_overlay_options:[disable_uboot_overlay_video=1] >> >> uboot_overlay_options:[uboot_overlay_pru=/lib/firmware/AM335X-PRU-RPROC-4-14-TI-00A0.dtbo] >> uboot_overlay_options:[enable_uboot_cape_universal=1] >> pkg check: to individually upgrade run: [sudo apt install --only-upgrade >> <pkg>] >> pkg:[bb-cape-overlays]:[4.4.20180628.0-0rcnee0~stretch+20180628] >> pkg:[bb-wl18xx-firmware]:[1.20180517-0rcnee0~stretch+20180517] >> pkg:[kmod]:[23-2rcnee1~stretch+20171005] >> pkg:[roboticscape]:[0.4.4-git20180608.0-0rcnee0~stretch+20180609] >> pkg:[firmware-ti-connectivity]:[20170823-1rcnee1~stretch+20180328] >> groups:[debian : debian adm kmem dialout cdrom floppy audio dip video >> plugdev users systemd-journal i2c bluetooth netdev cloud9ide gpio pwm eqep >> admin spi tisdk weston-launch xenomai] >> cmdline:[console=ttyO0,115200n8 bone_capemgr.uboot_capemgr_enabled=1 >> root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M >> net.ifnames=0 quiet] >> dmesg | grep pinctrl-single >> [ 1.368684] pinctrl-single 44e10800.pinmux: 142 pins, size 568 >> dmesg | grep gpio-of-helper >> [ 1.398397] gpio-of-helper ocp:cape-universal: ready >> END >> >> -- >> 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 [email protected] <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/beagleboard/9b8153f1-ca60-420e-843e-dbb9863f68dd%40googlegroups.com >> >> <https://groups.google.com/d/msgid/beagleboard/9b8153f1-ca60-420e-843e-dbb9863f68dd%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/356924fb-a347-4be2-9169-1014ea86cb49%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
