Search found 4 matches

by ChrisDodge
Mon Jul 24, 2017 10:14 am
Forum: XMOS Devices
Topic: XS1-U12: Usb suspend/standby/sleep
Replies: 5
Views: 6774

Re: XS1-U12: Usb suspend/standby/sleep

Hi,

Thanks for looking into this, and that sounds more positive. So does that mean in principle that if we poke the various registers directly, we should be able to get the U device to transition from AWAKE to ASLEEP and back again by following the USB bus' suspend state?

Thanks,

CD
by ChrisDodge
Mon Jul 24, 2017 9:51 am
Forum: XMOS Devices
Topic: XS1-U12: Usb suspend/standby/sleep
Replies: 5
Views: 6774

Re: XS1-U12: Usb suspend/standby/sleep

Hi, Thanks for the answer, but that doesn’t quite make sense! The datasheet for the XS1-U12A-128-FB217 (2015-04-14) clearly states that “A transition from the ASLEEP state into the AWAKE state is instigated by a wakeup request triggered by a request from the USB block to exit standby mode an input, ...
by ChrisDodge
Wed Nov 16, 2016 4:12 pm
Forum: Development Tools and Programming
Topic: XTCP DHCP Behaviour
Replies: 3
Views: 6234

Re: XTCP DHCP Behaviour

Hi Louis, Thanks for the replies and sorry about the delay in following up. Yes, I guess that a different DHCP server could behave differently and work out that the DHCPDISCOVER is from a device with a valid IP address. If you unplug and re-plug the Ethernet cable, so you see the xTCP code send a DH...
by ChrisDodge
Thu Nov 03, 2016 11:57 am
Forum: Development Tools and Programming
Topic: XTCP DHCP Behaviour
Replies: 3
Views: 6234

XTCP DHCP Behaviour

We’re using the xTCP library V3.2.1 and have come across an issue with the DHCP behaviour. We get the occasional “port flap” where the Ethernet link goes down briefly, which can also be simulated by unplugging the network cable for a short time. In this situation, the DHCP behaviour seems incorrect,...