Seeking USB discussion forum / place
-
OK, I have read not to post here because it is first forum on list , but... I would like to talk to someone who is INTERESTED and knows something about USB. I am not looking for code samples etc. I have a basic USB code running on SAM3x8e / AKA Arduino Due. Based my design on code posted here, but as it is always my case - the author of the very long article is no longer on this forum. I have basic understanding how USB works on ATmel ARM processor. I have test connected several USB devices and NONE of them gives SAME results. I can reliably and repeatedly connect and reset single USB device on / to USB port. One of the devices is USB WEB CAM and it actually sends IN packet but it is missing header. So that is my basic question where I really could use some help from somebody knowledgeable about USB innards. How to verify contents of packet asking for data and than verify the actual data received. Concretely - which descriptor is the "source " sender - I have over 40 of them enumerated - including UVC descriptors. I am sort of speak "over my head" and would appreciate if you could contribute to solution with your personal knowledge. I am not seeking references to Google. Been there , done that. Thanks for your time Vaclav PS No "check out Arduino.cc" I am not welcomed there.
-
OK, I have read not to post here because it is first forum on list , but... I would like to talk to someone who is INTERESTED and knows something about USB. I am not looking for code samples etc. I have a basic USB code running on SAM3x8e / AKA Arduino Due. Based my design on code posted here, but as it is always my case - the author of the very long article is no longer on this forum. I have basic understanding how USB works on ATmel ARM processor. I have test connected several USB devices and NONE of them gives SAME results. I can reliably and repeatedly connect and reset single USB device on / to USB port. One of the devices is USB WEB CAM and it actually sends IN packet but it is missing header. So that is my basic question where I really could use some help from somebody knowledgeable about USB innards. How to verify contents of packet asking for data and than verify the actual data received. Concretely - which descriptor is the "source " sender - I have over 40 of them enumerated - including UVC descriptors. I am sort of speak "over my head" and would appreciate if you could contribute to solution with your personal knowledge. I am not seeking references to Google. Been there , done that. Thanks for your time Vaclav PS No "check out Arduino.cc" I am not welcomed there.
-
I believe Hardware & Devices Discussion Boards[^] is the closest fit for what you are looking for.
There are only 10 types of people in the world, those who understand binary and those who don't.
-
OK, I have read not to post here because it is first forum on list , but... I would like to talk to someone who is INTERESTED and knows something about USB. I am not looking for code samples etc. I have a basic USB code running on SAM3x8e / AKA Arduino Due. Based my design on code posted here, but as it is always my case - the author of the very long article is no longer on this forum. I have basic understanding how USB works on ATmel ARM processor. I have test connected several USB devices and NONE of them gives SAME results. I can reliably and repeatedly connect and reset single USB device on / to USB port. One of the devices is USB WEB CAM and it actually sends IN packet but it is missing header. So that is my basic question where I really could use some help from somebody knowledgeable about USB innards. How to verify contents of packet asking for data and than verify the actual data received. Concretely - which descriptor is the "source " sender - I have over 40 of them enumerated - including UVC descriptors. I am sort of speak "over my head" and would appreciate if you could contribute to solution with your personal knowledge. I am not seeking references to Google. Been there , done that. Thanks for your time Vaclav PS No "check out Arduino.cc" I am not welcomed there.
If it is windows kernel then OSR online is the only forum that exists. They often go into hardwarte discussions, so you will be OK posting there.