This discussion has been locked.

You can no longer post new replies to this discussion. If you have a question you can start a new discussion

USB

rj j over 13 years ago

Hello everyone

I am using LPC2468 USB port 1 for USB host and usb port 2 for usb HID device.I successfully implemented both usb port 2 for usb HID device and also usb port 1 for usb host mass storage class.But I am facing a problem that when I use usb host and usb HID Device independently they works ok but when i use usb host after using usb device for my purpose it doesn,t work program hangs.I think it,s because of common interrupt vector address .Can we use different vector address for both.Can anybody guide me about this?

Parents

0 rj j over 13 years ago in reply to Chinzei Tsuneo

Thanks sir for your kind support

As Per your instruction i examine through Usbintst register third bit is USB_INT_REQ_DMA
is this is the USB_HOST_INT line ? I just want to confirm it.

Sir can you please elaborate it if there is a thread related to this please send me the link.
I will be very thankful to you.
Cancel
Vote up 0 Vote down

Cancel

Reply

0 rj j over 13 years ago in reply to Chinzei Tsuneo

Thanks sir for your kind support

As Per your instruction i examine through Usbintst register third bit is USB_INT_REQ_DMA
is this is the USB_HOST_INT line ? I just want to confirm it.

Sir can you please elaborate it if there is a thread related to this please send me the link.
I will be very thankful to you.
Cancel
Vote up 0 Vote down

Cancel

Children

0 Chinzei Tsuneo over 13 years ago in reply to rj j

> third bit is USB_INT_REQ_DMA

USB_HOST_INT (bit 3) is the fourth bit of USBIntSt.
On the user manual, it is described on the OTG section (chapter 15, 7.1 USB Interrupt Status Register), neither on the USB device nor on host section.

Tsuneo
Cancel
Vote up 0 Vote down

Cancel
0 rj j over 13 years ago in reply to Chinzei Tsuneo

Thanks Sir you solved my problem.
Cancel
Vote up 0 Vote down

Cancel