add hub controller support

Narendra Kulkarni29

Other Parts Discussed in Thread: TPS2044, TPS2054

Hello,

I am pretty new to USB. We are working on customized board based on DK-TM4C129X using TM4C129X microcontroller and TI-RTOS. One of the requirement is the support for a hub (not available in DK-TM4C129 board). We are using the USB2514B hub controller from microchip. We will be supporting only Mass Storage Class devices.

I modified the "usb_host_hub" project to suit our customized board(not USB part, removed the display part) and tried test reading from a pen drive. its goes into infinite loop inside "usbhostenum.c" trying to enumerate the device.

1. I don't see any interrupts being generated

2. How do we know what it is trying to enumerate the hub controller or the pen drive

I am attaching the project. Can you please tell me where I am be going wrong

Thanks in Advance

Narendra

usb_host_hub.zip

over 10 years ago

0 Lalindra Jayatilleke over 10 years ago

TI__Mastermind 30365 points

Moving this thread to the TM4C Microcontrollers Forum.

0 Amit Ashara over 10 years ago

TI__Guru**** 244400 points

Hello Narendra

The first step to quantify that is to check the example project with an off the shelf Hub, instead of using a Hub controller from MicroChip. Can you do and let us know.

Regards
Amit

0 Narendra Kulkarni29 over 10 years ago in reply to Amit Ashara

Intellectual 590 points

There were some hardware issues, because of which we were not getting interrupts. We are now getting interrupts, but we are facing a peculiar problem. I am debugging the issues, if i am not able to solve the issue will come back. Meanwhile I will also test with an off the shelf hub. Any recommendation for the off the shelf hub

Thanks

Narendra

0 Amit Ashara over 10 years ago in reply to Narendra Kulkarni29

TI__Guru**** 244400 points

Hello Narendra

We have been using a Belkin 4 port Hub for almost 5 years and it works extremely well/

Regards
Amit

0 Narendra Kulkarni29 over 10 years ago in reply to Amit Ashara

Intellectual 590 points

Thanks for all support. There was hardware issue, because of which the device was not getting any power. This was fixed and the code is working perfectly.

Thanks again
Narendra

0 Amit Ashara over 10 years ago in reply to Narendra Kulkarni29

TI__Guru**** 244400 points

Hello Narendra

And what was the second issue?

Regards
Amit

0 Narendra Kulkarni29 over 10 years ago in reply to Amit Ashara

Intellectual 590 points

There were 2 issues

1. We were testing for Full Speed USB, but the hardware was configured to use ULPI. So changing this resulted in getting the interrupts
2. We are using a TPS2044 QUAD POWER-DISTRIBUTION SWITCHES for the VBUS signal, but 2044 has an active low input, where as the hub port power pins were active high and so we were not getting any power on VBUS. TPS2054 is a pin compatible to 2044, but has an active high input. Replaced the 2044 with 2054 and everything worked like a charm without any issues.

I did not have to make any changes to the example project, other than removing the LCD code.

Now I have ported this hub support code on TI-RTOS and facing issues. I am raising this in TI-RTOS forum for help.

Thanks
Narendra

0 Amit Ashara over 10 years ago in reply to Narendra Kulkarni29

TI__Guru**** 244400 points

Hello Narendra

Really appreciate the detail of debug steps done on the two issues.

Regards
Amit

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add hub controller support