USB Pen drive not working on Appro DM368IPNC MT5

Harikrushna Sheth

Hi All,

I want to connect USB pen drive to Appro DM368IPNC MT5 and capture images/video on the pen drive. As per my knowledge by default Appro unit comes with USB device support, so I have to configure USB host mode along with USB mass storage support. I have compiled kernel with following options to add support of USB HOST and USB MASS STORAGE DEVICE. (I have also attached my config file)

2772.davinci_dm368_ipnc_defconfig_nfs.cfg

I have also tried with a special mini USB OTG host cable in which 4 & 5 pins are shorted.

When I connect USB pen drive with Appro IP camera, I will not be able to see any messages in "dmesg". I will not be able to see any devices in /proc/devices.

Need help for the following questions..

1. Does appro DM368IPNC support USB Host support ? (Generally most of the EVM has Jumper settings for host/device mode, appro doen't have it)

2. If Appro has support for it, then what is missing in my kernel configuration?

Regards,

--HK

over 12 years ago

0 Renjith Thomas over 12 years ago

Guru 31670 points

Harikrushna,

I don't think Appro IPNC support host port. Your device won't even get the power from the USB port. Can you check whether its getting powered or not by using an optical mouse? If its getting powered up, you'll the bottom LED glowing. If its not glowing, then it 100% confirmed that host support is not there.

Generally in IPNC USB is used in peripheral mode only.

0 Harikrushna Sheth over 12 years ago in reply to Renjith Thomas

Prodigy 210 points

Renjith,

Yes, I didn't get power LED on at USB device(pen drive, mouse) side. But as per my knowledge(not 100% sure) we need to short 4th (USB_ID) & 5th pin of mini USB port, then only host mode will be activated. Generally some of the EVM board has jumper for that, but here there is no jumper setting so I have used special USB host OTG cable, which has 4th and 5th pin shorted. I am attaching picture of that cable also if anybody get any clue.

(USB 2.0 A Female to 5pin B Male Mini USB Cable OTG Host Extension Cable)

Regards,

--Harikrushna

0 Renjith Thomas over 12 years ago in reply to Harikrushna Sheth

Guru 31670 points

Harikrushna,

It not really like that. Whatever you've mentioned is valid for switching between host/peripheral mode if OTG is supported by the controller, kernel and the board. Here the problem is that board doesn't support host mode, even though the controller supports that. ID pin is just an indication to identify host/peripheral mode. Mark this post as answered, if you believe I could.

0 Harikrushna Sheth over 12 years ago in reply to Renjith Thomas

Prodigy 210 points

Hi Renjith,

Thanks for clarification. How to make sure that Appro DM368IPMN MT5 really don't have host support on their board. I have schematic of the product.

Regards,

--Harikrushna

0 Renjith Thomas over 12 years ago in reply to Harikrushna Sheth

Guru 31670 points

Harikrushna,

I think you've to provide support for VBUS on your board. You can refer to the DM365 EVM's schematics and compare how host is implemented there.

0 Harikrushna Sheth over 12 years ago in reply to Renjith Thomas

Prodigy 210 points

Renjith,

Yes, you are right. I have compared APPRO and DM365 schematic and I can see the differences for VBUS. Thank you for your support.

Regards,

--HK

Processors

Processors forum

USB Pen drive not working on Appro DM368IPNC MT5