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Jovan

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Posts posted by Jovan

  2. Posted · Edited by Jovan

     

    Hello,

    We're having issues with reading date&time from RTC clock.

    Battery is connected, voltage is measured and is ok. 

     

     

    no_i2c_bus.jpgi2c_zero_device.jpg

    We can set the date&time in RTC clock using command "hwclock --systohc" as you can see in screenshot below:

    time_before_reboot.jpg

    But our issue is that after the reboot, only the date is read from RTC clock.

    After the reboot, time starts every time at 00:00:00 even though it was written to RTC before the reboot.

    This is plain vanilla Debian OS and we're having this issue consistently on more than one device.

    time_after_reboot.jpg

    Any ideas?

     

    Thanks a lot.spacer.pngspacer.png

  11. Posted

    Thanks for the feedback.

    On Mac I had to use USB Hub to get USB-A port. Tried two without any success. Result is the same.

    Then I tried on the Windows machine and it got recognized, but not as a storage device, but as "Unknown Device", which then was not available for flashing in BalenaEther as it's not recognized as a storage device.

    Any further help please? Is there any drivers I should install on Win?

     

    Thanks again

     

  12. Posted

    After successfully using TinkerBoard 2S in production, we wanted to evaluate TinkerBoard 3N and bought it.

    However, using the same setup (macOS and USB-C <-> USB-C cable directly connected to the mac laptop), we cannot get it to be recognized as a storage device.

    We're following the same procedure as we do with the TinkerBoard 2S (unplug everything from TinkerBoard, connect the USB-C cable to board and laptop using the OTG port and then connecting the power supply.

    But nothing happens when we connect the board...

     

    Can you suggest what can we try to resolve the issue?

    Photo of the board itself is attached if that helps in any way...

     

    Thanks

     

    TinkerBoard3N.jpg

  15. Posted

     

    Thanks for the response.

    These are exact steps for reproduction:

    1) burn official 3.0.11 image (Tinker_Board_2-Debian-Bullseye-v3.0.11-20231024-release.img)

    2) change intf:fiq_debugger to OFF

    3) change intf:uart0 to ON

    4) remove wifi/bt card that was shipped with the TinkerBoard

    5) Reboot

     

    When I put back the WiFi/BT card in, then I can see the line:  

    cfg80211: failed to load regulatory.db

    but without wireless card, it's stuck on boot just before that line (as shown on photo).

     

    Best regards

  16. Posted

    Hello,

     

    When. in /boot/config.txt I enable uart0 and uart4 and define them with different baud rates, both are always initialized with 1500000 baudrate. 

    intf:fiq_debugger=on
intf:uart0=on
intf:uart4=on
#intf:i2c6=off
#intf:i2c7=off
#intf:i2s0=off
#intf:spdif=on
#intf:spi1=off
#intf:spi5=off
#intf:pwm0=off
#intf:pwm1=off
#intf:pwm3a=off
#intf:test_clkout2=off


uart0 = Serial("/dev/ttyS0", 115200)
uart4 = Serial("/dev/ttyS4", 1000000)

    then after the boot I get: 

    linaro@linaro-alip:~$ sudo dmesg | grep tty
[    4.664967] Kernel command line: storagemedia=emmc androidboot.storagemedia=emmc androidboot.mode=normal  androidboot.verifiedbootstate=orange androidboot.serialno=b6977d7c12b9a2e5 root=/dev/mmcblk0p8 rw rootwait console=tty0 earlycon=uart8250,mmio32,0xff1a0000 console=ttyFIQ0 rootfstype=ext4 coherent_pool=1m
[    5.325828] printk: console [tty0] enabled
[    5.681796] Registered FIQ tty driver
[    6.876158] printk: console [ttyFIQ0] enabled
[    6.890795] Registered fiq debugger ttyFIQ0
[    7.667771] ff180000.serial: ttyS0 at MMIO 0xff180000 (irq = 45, base_baud = 1500000) is a 16550A
[    7.668238] ff370000.serial: ttyS4 at MMIO 0xff370000 (irq = 47, base_baud = 1500000) is a 16550A
[   14.656870] ttyFIQ ttyFIQ0: tty_port_close_start: tty->count = 1 port count = 2

     

    How to change baudrate this?

    Thanks

  17. Posted

    Hello,

    When we put "intf:fiq_debugger=off" line to config.txt and removed WiFi card (as the device we're sending to our customers does not require WiFi/BT, TInkerBoard simply won't boot.

    It's stuck after the messages about cfg80211 loading certificates (as shown in the attached photo).

     

    Do you have maybe any solution or workaround for this issue?

     

    Best regards,

    Jovan

    boot_issue.jpg

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