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I'm trying to change the input report to 100 but it doen't work. I read almost all the threads of Tsuneo, but i can not get it to work. When I use the "SimpleHIDwrite" and try to get the reports i get "Get Report Error: Data Error (Cyclic redundancy check) (17)".
This only happens when i tried to make the input_report > 64 Bytes, otherwise works perfect other thing is that i read that if the packet that you send is smaller is automatically reduced, but not to me :(. From USBcfg.h i have the nexts defines
#define USB_MAX_PACKET0 64 #define InReport_length 100
Here i will put my report descriptor:
const BYTE HID_ReportDescriptor[] = { HID_UsagePageVendor( 0x00 ), HID_Usage( 0x01 ), HID_Collection( HID_Application ), HID_LogicalMin( 0 ), HID_LogicalMaxS( 0xFF ), HID_ReportSize( 8 ), // bits HID_ReportCount( InReport_length ), // bytes HID_Usage( 0x01 ), HID_Input( HID_Data | HID_Variable | HID_Absolute ), HID_ReportCount( 4 ), // bytes HID_Usage( 0x01 ), HID_Output( HID_Data | HID_Variable | HID_Absolute ), HID_EndCollection, }; const WORD HID_ReportDescSize = sizeof(HID_ReportDescriptor);
This part is in USBconfigdescriptor[]
const BYTE USB_ConfigDescriptor[] = { ..... ..... USB_ENDPOINT_DESC_SIZE, /* bLength */ USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType */ USB_ENDPOINT_IN(1), /* bEndpointAddress */ USB_ENDPOINT_TYPE_INTERRUPT, /* bmAttributes */ WBVAL(0x0040), /* wMaxPacketSize */ 0x02, /* 2ms */ /* bInterval */ /* Terminator */ 0 /* bLength */ };
I think that the problem may be is in hiduser.c but i could't check it because i didn't find code for this
BOOL HID_GetReport (void) { int i; /* ReportID = SetupPacket.wValue.WB.L; */ switch (SetupPacket.wValue.WB.H) { case HID_REPORT_INPUT: GetInReport(); for(i=0;i< InReport_length ;i++) EP0Buf[i] = InReport[i]; /*Copy all the report to send*/ break; case HID_REPORT_OUTPUT: return (FALSE); /* Not Supported */ case HID_REPORT_FEATURE: /* EP0Buf[] = ...; */ /* break; */ return (FALSE); /* Not Supported */ } return (TRUE); }
where EP0Buf[] is define in USBcore.h
extern BYTE EP0Buf[USB_MAX_PACKET0];
Of course i realized that EP0Buf was smaller so i tried doing
extern BYTE EP0Buf[InReport_length];
but was the same Endpoint 1 is
void USB_EndPoint1 (DWORD event) { InEP_empty = TRUE; }
If you need more info to deduce my problem just tell me.. Thanks
"The problem is in the Input report, you can noticed that i'm only replying when i have data to do it."
Ummm... I din't notice it. Your above code for Get_Report( INPUT ) always returns a valid input report. But if you return STALL to Get_Report( INPUT ), it'll cause error and the host will reset the device by bus reset. Get_Report( INPUT ) has to be always answered, regardless of the reason of the device side.
Unfortunately, the HID spec doesn't describe this restriction clearly. It notes that the support of Get_Report is mandatory: This means the device should always return a valid reply to Get_Report request. STALL to Get_Report occurs just when any one of the SETUP parameters is invalid (wValue, wIndex and wLength).
For above strategy, use the interrupt IN endpoint, instead.
Also, Get_Report and Set_Report doesn't fit to repeated access. For repeated access, use interrupt IN/OUT endpoint. "I solve my problem in a rustic way, i split my self the packet, but i would like to know what is the problem here."
I copied your modification to this example, and it works fine. I suppressed the interrupt IN EP handler temporarily.
LPC2368 / LPC2378 USB HID (Human Interface Device) Example http://www.keil.com/download/docs/335.asp
As I can't find any error on your modification, it was required to check it on a working board, to ensure my answer. When I see some error, I just point it out without running it. :-)
Doesn't the problem lie in the input report from the interrupt IN endpoint ?
Tsuneo