Mity CPU Platforms » MitySOM-5CSX Altera Cyclone V

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 Jonas Mair

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 ... Tim Iskander

JM 09:34 AM Software Development: Reading out the LTC2945

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... Jonas Mair

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... Daniel Vincelette

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... Lucas Uecker

LU 04:38 PM PCB Development: RE: Ethernet PHY

The ethernet section.
!Eth0.png! Lucas Uecker

TR 04:31 PM PCB Development: RE: Ethernet PHY

Hi Dan,
It does show no link detected. We will poke around further.
Thanks! Travis Rawson

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: Daniel Vincelette

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. Lucas Uecker

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_... Daniel Vincelette

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.
Travis Rawson

LU 06:28 PM Software Development: RE: USB Powered Hub and FTDI Cable

And the relevant section of SOM connector:
!USBpic2.png! Lucas Uecker

LU 06:09 PM Software Development: RE: USB Powered Hub and FTDI Cable

USB section schematic.
!USBpic.png! Lucas Uecker

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... Daniel Vincelette

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... Lucas Uecker

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! Lucas Uecker

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 Daniel Vincelette

LU 04:05 PM PCB Development: Ethernet PHY

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... Lucas Uecker

06/24/2021

TR 09:14 PM Software Development: USB Powered Hub and FTDI Cable

Hello,
I was wondering if someone could point me in the right direction with an error I have. I have a powered USB hub connected to our dev board, and we can connect a USB hard drive to it and use it. However, when I try and connect a... Travis Rawson

AB 01:27 AM PCB Development: RE: USB Hub

Lucas,
The USB Hub you have selected handles both the VBUS enable and Overcurrent detection for each of the ports, please follow the USB2046 recommendations for connecting these signals to the TPS2044D power distribution switches. As ... Alexander Block

06/23/2021

LU 01:19 PM PCB Development: USB Hub

Hello-
I'm working on adding a USB hub to a carrier board design, largely following the application example:
https://www.ti.com/lit/ds/symlink/tusb2046b.pdf
I'm replacing the single channel TPS2041BDBVRG4 to a four-channel TPS20... Lucas Uecker

DV 12:30 PM Software Development: RE: Ethernet on MitySoM

Hi Jonas,
Awesome, I'm glad to hear it!
Best regards,
Dan Daniel Vincelette

JM 11:50 AM Software Development: RE: Ethernet on MitySoM

Hey Dan,
I just received the new board and ethernet worked instantly without any problems!
Thanks again for the help.
Regards Jonas Jonas Mair