Thanks Robert for your attention. I replaced the line in uEnv.txt and it indeed installs the rtc. But it also uninstalled my display (4D Systems), so I outcommented it. This is what I see with the line as recommended active:
debian@beaglebone:~$ ls -al /dev/rtc* lrwxrwxrwx 1 root root 4 Feb 5 16:20 /dev/rtc -> rtc1 crw------- 1 root root 252, 0 Feb 5 16:20 /dev/rtc0 crw------- 1 root root 252, 1 Feb 5 16:46 /dev/rtc1 debian@beaglebone:~$ sudo nano /boot/uEnv.txt-------> line outcommented After reboot: debian@beaglebone:~$ ls -al /dev/rtc* lrwxrwxrwx 1 root root 4 Nov 3 2016 /dev/rtc -> rtc0 crw------- 1 root root 252, 0 Nov 3 2016 /dev/rtc0 debian@beaglebone:~$ sudo /opt/scripts/tools/version.sh git:/opt/scripts/:[1aa73453b2c980b75e31e83dab7dd8b6696f10c7] eeprom:[A335BNLT00C02916BBBK1556] model:[TI_AM335x_BeagleBone_Black] dogtag:[BeagleBoard.org Debian Image 2018-10-07] bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot 2018.09-00002-g0b54a51eee]:[location: dd MBR] kernel:[4.14.71-ti-r80] nodejs:[v6.14.4] uboot_overlay_options:[enable_uboot_overlays=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] uboot_overlay_options:[dtb_overlay=/lib/firmware/BB-RTC-02-00A0.dtbo] pkg check: to individually upgrade run: [sudo apt install --only-upgrade <pkg>] pkg:[bb-cape-overlays]:[4.4.20181106.0-0rcnee0~stretch+20181110] pkg:[bb-wl18xx-firmware]:[1.20180517-0rcnee0~stretch+20180517] pkg:[kmod]:[23-2rcnee1~stretch+20171005] pkg:[librobotcontrol]:[1.0.4-git20181108.0-0rcnee0~stretch+20181110] 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/mmcblk1p1 ro rootfstype=ext4 rootwait uboot_detected_capes=BB-BONE-LCD4-01, coherent_pool=1M net.ifnames=0 quiet] dmesg | grep pinctrl-single [ 1.134653] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568 dmesg | grep gpio-of-helper [ 1.146518] gpio-of-helper ocp:cape-universal: ready END debian@beaglebone:~$ Please advise. Best regards, Harke On Wednesday, 5 February 2020 16:01:39 UTC+1, RobertCNelson wrote: > > On Wed, Feb 5, 2020 at 8:39 AM Harke Smits <[email protected] <javascript:>> > wrote: > > > > Hello, > > > > Is there a recipe that works to install the RTC (DS3231/1307)? I googled > and tried a lot of things but can not make it work. I succeeded on older > Debian versions but now I am lost. > > I have Debian 2018-10-07. The hw works as proved by i2cdetect -y -r 2. > At address 0x68. "echo ds1307 0x68 > >/sys/class/i2c-adapter/i2c-2/new_device" gives: permission denied. > > Looks like I need to do something with overlay files? But uEnv.txt does > not need to be modified, right? ls -al /dev/rtc*: only gives two entries > for rtc0. > > Please help. > > Which DS* device? we have an overlay for both devices.. > > So assuming DS1307 and i2c2: > > > https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/BB-I2C2-RTC-DS1307.dts > > > uboot_overlay_addr0=/lib/firmware/BB-I2C2-RTC-DS1307.dtbo > > and this swaps the Beagle RTC0 with this one, so normal linux tools > will use the DS1307 as rtc0 > > If it doesn't work, please run and report: > > sudo /opt/scripts/tools/version.sh > > So we can see what's "old" with your setup.. > > Regards, > > -- > Robert Nelson > https://rcn-ee.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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/89cf7781-94f4-47db-bee5-6e94ed3d46e6%40googlegroups.com.
