Hi. I'm working with LPC 2368 controller and need to write USB HID application. I'm using Keil's example as base and I need to change it to send more bytes from device to PC at once. I've changed the example next way:
usbdesc.c
HID_UsagePage(HID_USAGE_PAGE_DEV_CONTROLS), HID_UsageMin(0), HID_UsageMax(255), HID_Usage(0), HID_LogicalMin(0), HID_LogicalMax(255), HID_ReportCount(USB_SIZE), HID_ReportSize(8), HID_Input(HID_Data | HID_Variable | HID_Absolute),
usbuser.c
BYTE InReport[USB_SIZE]; void USB_EndPoint1 (DWORD event) { switch (event) { case USB_EVT_IN: GetInReport(InReport3) USB_WriteEP(0x81, InReport3, USB_SIZE); break; } }
So the USB_SIZE is showing amout of bytes send to PC at once. And here is my problem: when USB_SIZE<=4 all works fine. When USB_SIZE>4 - PC receives nothing. Am I doing something wrong? Or somebody know how to do it correctly? P.S. USB_MAX_PACKET0 is 64
Finally, the forum engine rejects even my account (This is made on another account of Tsuneo Chinzei). I gave up to post the rest here. Instead, I posted my whole original post to the SiLabs Forum :-) "Comment to "USB HID Report size" on KEIL forum" www.cygnal.org/.../001445.html
The struggle with this forum engine made me exhausted out. I never post to here any more.
Tsuneo
The problem is biggest during the European night, when Europe is sleeping and US companies has closed for the day. It seems that if I get a problem when there isn't any activity on the formum, the problem may persist for several hours - I may have to retry a post in the morning. But as soon as there is an activity on the forum, the problem seems to go away.
Maybe the forum sends out a broken cookie (or a good cookie pointing to a broken machine) to always direct the user to the same server, and it takes other user-action to get the load-balancing solution to give out a cookie to a different (working) machine.
I can't see why they need load sharing for the forum. If we assume 100 posts/day, a 1000 to 1 read/write ratio and a 10x clumping, the peak load on the server would still only be 11 reads/s and maybe 50 new posts in an hour. Having the forum fully integrated with the full company web site doesn't give it extra redundancy - just significant amounts of downtime or time when it disbehaves. Instead it gets maybe ten times the downtime of a single-server solution. This isn't the first time this forum has done strange things this year.
In my case, the trouble was caused by the SPAM filter of this forum engine.
I usually write posts in a text editor for spell check, because English is not my native language and I'm not so good at English. When I pasted my whole post to the "Message" box and pushed "Preview" button, I saw neither of my message nor "Post" button on the preview page. I've experienced this kind of SPAM filter troubles on other fora. Then, I started to track down the "SPAM word" using this "Preview" test with binary search - split the post into half, and test on each half.
As you see on my above post, the first half passed the preview test. Then I posted it. When I split the latter half again, neither of them didn't pass the preview test. The forum engine picked up multiple "SPAM words" in my post. I was going on the binary search, and lastly found one of the "SPAM word". When I delete just the word from my post, the forum engine accepted my post and showed the preview. I can't write the word here, because the forum engine rejects this post too. See this post on SiLabs Forum. "Comment to "USB HID Report size" on KEIL forum" www.cygnal.org/.../001445.html
If it were a word in plain text, I would replace it with a synonym. In this way, I've made my posts pass SPAM filter of other fora. Unfortunately, it was a type name on the code, which is defined in MS HID header file. Then, I made struggle to rewrite the word so that the forum engine passes it, and easily recognized it was replaced. In this struggle, I made 30-40 times of preview test. And finally the forum engine rejected all of my posts, regardless of the contents of the post. My original account was banned by the forum engine.
I know the SPAM filter is a required function to maintain fora. However, the SPAM filter of this forum is too strict unreasonably. I cannot predict which word is the SPAM word. As I'm not good at English, it takes fair time to make up a post. The rejection of the forum engine of my elaborated post disappoint me so much. Then, I'll never write to this forum any more.
Anyway, why my account is banned as a spammer? Why me, instead of Andy? (just joke).