Activity
From 06/29/2021 to 07/28/2021
07/16/2021
- JM 01:10 PM Software Development: RE: Reading out the LTC2945
- Thanks for the information Tim, that helps a lot.
I've got a custom dev tree, but then I know where to look and copy the entry from^^
Regards
Jonas - TI 01:05 PM Software Development: RE: Reading out the LTC2945
- Jonas,
the schematic for the baseboard is available here... https://support.criticallink.com/redmine/attachments/download/22646/80-000578RC-10_SCH_RevB.PDF
The LTC2945 is at address 6F on I2C bus 1
There is user-space hwmon entry for ... - Hey,
I am currently benchmarking my design and want to know the power draw by the system. Under https://support.criticallink.com/redmine/projects/mityarm-5cs/wiki/Power_Supply_Requirements I read, that there is a chip on the board, wh...
07/15/2021
- DV 05:40 PM Software Development: RE: USB Powered Hub and FTDI Cable
- Lucas,
I have found a design that we've used that has the same USB hub that you're using. And after comparing it with your original design, the caps and resisters on the data signals you had originally were correct, sorry about my las... - LU 04:20 PM Software Development: RE: USB Powered Hub and FTDI Cable
- Dan-
I shorted R19, R31, and R34 in the above schematic and removed R30, C7, and C15.
After a USB storage drive didn't mount again I modified the USB lines:
-C54 has been missing all along on USB1_4, but otherwise no modificatio... - LU 04:38 PM PCB Development: RE: Ethernet PHY
- The ethernet section.
!Eth0.png! - TR 04:31 PM PCB Development: RE: Ethernet PHY
- Hi Dan,
It does show no link detected. We will poke around further.
Thanks! - DV 03:55 PM PCB Development: RE: Ethernet PHY
- Hi Lucas,
It looks like the MAC does see the phy because of the following line:
07/14/2021
- LU 09:49 PM Software Development: RE: USB Powered Hub and FTDI Cable
- Thanks Dan!
I'll try the modifications as soon as I can. - DV 09:32 PM Software Development: RE: USB Powered Hub and FTDI Cable
- Hi Travis and Lucas,
Thank you for the info!
I've compared your schematic with a USB 2 hub(TUSB4020BIPHP) that we've used with the 5CSx SOM before and the big standout difference to me is the series resistors/pull-ups/caps on USB1_... - TR 06:51 PM Software Development: RE: USB Powered Hub and FTDI Cable
- The Model number is: 80-000705RC-9
The Serial number is: 19032369
I attached the dmesg results below. It appears that it is doing the same thing with the base image.
- LU 06:28 PM Software Development: RE: USB Powered Hub and FTDI Cable
- And the relevant section of SOM connector:
!USBpic2.png! - LU 06:09 PM Software Development: RE: USB Powered Hub and FTDI Cable
- USB section schematic.
!USBpic.png! - DV 06:02 PM Software Development: RE: USB Powered Hub and FTDI Cable
- Hi Lucas,
Have you tried using an unaltered version of our development SD Card on your baseboard to see if it behaves the same way? This might be helpful in narrowing down on a software/kernel issue.
The images can be found here: htt... - LU 04:16 PM Software Development: RE: USB Powered Hub and FTDI Cable
- I think there was a hardware issue on that version of the board to begin with, but similar problems on a new board revision that includes a TI TUSB2046BIRHBR hub:
-grounded USB1_ID via 330 ohm resistor
-267 ohm resistor between +USB1... - LU 09:46 PM PCB Development: RE: Ethernet PHY
- Hi Dan-
I've attached the full dmesg in a text file. Or do you mean the full text from the debug UART on bootup?
Thanks! - DV 09:34 PM PCB Development: RE: Ethernet PHY
- Hi Lucas,
Can you post your full boot log? With that I should be able to see if the ethernet MAC at least finds the PHY over the MDIO interface.
Thanks,
Dan - I seem to be having trouble with the ethernet PHY on carrier board. I've tried to duplicate the PHY that is on the Critical Link demonstration board with the known exceptions of using a Microchip KSZ9021RN in place of the KSZ9031RN as we...