We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.
Hi,
For a LPC23xx device, I'm adding HID besides MSC. I got everything working fine, except for HID interrupt IN transfers. So I can get and set HID reports via control transfers. Also, I can set reports via interrupt OUT transfers, but not IN.
Using USBlyzer, I diagnosed the packet stream. As soon as I attach my device, I do see two interrupt IN transfer attempts at 01:00:81 (C:I:E). If my host application reads EP 1, USBlyzer does not show any packets passing by.
I'm a bit out of options. Does anyone have a clue where to look for a fix?
Thanks,
Mark
Connection Status Device connected Current Configuration 1 Speed Full Device Address 3 Number Of Open Pipes 4 Device Descriptor Swinxs Game Console Offset Field Size Value Description 0 bLength 1 12h 1 bDescriptorType 1 01h Device 2 bcdUSB 2 0200h USB Spec 2.0 4 bDeviceClass 1 00h Class info in Ifc Descriptors 5 bDeviceSubClass 1 00h 6 bDeviceProtocol 1 00h 7 bMaxPacketSize0 1 40h 64 bytes 8 idVendor 2 C251h Keil Software, Inc. 10 idProduct 2 1708h 12 bcdDevice 2 0203h 2.03 14 iManufacturer 1 04h "Swinxs BV " 15 iProduct 1 20h "Swinxs Game Console" 16 iSerialNumber 1 48h "000050020801" 17 bNumConfigurations 1 01h Configuration Descriptor 1 Bus Powered, 300 mA Offset Field Size Value Description 0 bLength 1 09h 1 bDescriptorType 1 02h Configuration 2 wTotalLength 2 0040h 4 bNumInterfaces 1 02h 5 bConfigurationValue 1 01h 6 iConfiguration 1 00h 7 bmAttributes 1 80h Bus Powered 4..0: Reserved ...00000 5: Remote Wakeup ..0..... No 6: Self Powered .0...... No, Bus Powered 7: Reserved (set to one) (bus-powered for 1.0) 1....... 8 bMaxPower 1 96h 300 mA Interface Descriptor 0/0 HID, 2 Endpoints Offset Field Size Value Description 0 bLength 1 09h 1 bDescriptorType 1 04h Interface 2 bInterfaceNumber 1 00h 3 bAlternateSetting 1 00h 4 bNumEndpoints 1 02h 5 bInterfaceClass 1 03h HID 6 bInterfaceSubClass 1 00h 7 bInterfaceProtocol 1 00h 8 iInterface 1 80h "Swinxs HID" HID Descriptor Offset Field Size Value Description 0 bLength 1 09h 1 bDescriptorType 1 21h HID 2 bcdHID 2 0110h 1.10 4 bCountryCode 1 00h 5 bNumDescriptors 1 01h 6 bDescriptorType 1 22h Report 7 wDescriptorLength 2 0045h 69 bytes Endpoint Descriptor 81 1 In, Interrupt Offset Field Size Value Description 0 bLength 1 07h 1 bDescriptorType 1 05h Endpoint 2 bEndpointAddress 1 81h 1 In 3 bmAttributes 1 03h Interrupt 1..0: Transfer Type ......11 Interrupt 7..2: Reserved 000000.. 4 wMaxPacketSize 2 0001h 1 byte 6 bInterval 1 00h Endpoint Descriptor 01 1 Out, Interrupt Offset Field Size Value Description 0 bLength 1 07h 1 bDescriptorType 1 05h Endpoint 2 bEndpointAddress 1 01h 1 Out 3 bmAttributes 1 03h Interrupt 1..0: Transfer Type ......11 Interrupt 7..2: Reserved 000000.. 4 wMaxPacketSize 2 0006h 6 bytes 6 bInterval 1 00h Interface Descriptor 1/0 Mass Storage, 2 Endpoints Offset Field Size Value Description 0 bLength 1 09h 1 bDescriptorType 1 04h Interface 2 bInterfaceNumber 1 01h 3 bAlternateSetting 1 00h 4 bNumEndpoints 1 02h 5 bInterfaceClass 1 08h Mass Storage 6 bInterfaceSubClass 1 06h SCSI Transparent Command Set 7 bInterfaceProtocol 1 50h Bulk-Only Transport 8 iInterface 1 62h "Swinxs Storage" Endpoint Descriptor 82 2 In, Bulk, 64 bytes Offset Field Size Value Description 0 bLength 1 07h 1 bDescriptorType 1 05h Endpoint 2 bEndpointAddress 1 82h 2 In 3 bmAttributes 1 02h Bulk 1..0: Transfer Type ......10 Bulk 7..2: Reserved 000000.. 4 wMaxPacketSize 2 0040h 64 bytes 6 bInterval 1 00h Endpoint Descriptor 02 2 Out, Bulk, 64 bytes Offset Field Size Value Description 0 bLength 1 07h 1 bDescriptorType 1 05h Endpoint 2 bEndpointAddress 1 02h 2 Out 3 bmAttributes 1 02h Bulk 1..0: Transfer Type ......10 Bulk 7..2: Reserved 000000.. 4 wMaxPacketSize 2 0040h 64 bytes 6 bInterval 1 00h Interface 0 HID Report Descriptor Item Tag (Value) Raw Data Usage Page (Vendor-Defined 1) 06 00 FF Usage (Undefined) 09 00 Collection (Application) A1 01 Usage Page (Vendor-Defined 2) 06 01 FF Usage (Vendor-Defined 1) 09 01 Logical Minimum (1) 15 01 Logical Maximum (16777215) 27 FF FF FF 00 Report Count (1) 95 01 Report Size (24) 75 18 Input (Data,Var,Abs,NWrp,Lin,Pref,NNul,Bit) 81 02 Usage (Vendor-Defined 2) 09 02 Report Count (1) 95 01 Report Size (16) 75 10 Input (Data,Var,Abs,NWrp,Lin,Pref,NNul,Bit) 81 02 Usage Minimum (Vendor-Defined 1) 19 01 Usage Maximum (Vendor-Defined 3) 29 03 Logical Minimum (0) 15 00 Logical Maximum (1) 25 01 Report Count (3) 95 03 Report Size (1) 75 01 Input (Data,Var,Abs,NWrp,Lin,Pref,NNul,Bit) 81 02 Report Count (1) 95 01 Report Size (5) 75 05 Input (Cnst,Ary,Abs) 81 01 Usage Page (Vendor-Defined 3) 06 02 FF Usage (Vendor-Defined 16) 09 10 Logical Minimum (0) 15 00 Logical Maximum (100) 25 64 Report Count (1) 95 01 Report Size (8) 75 08 Output (Data,Var,Abs,NWrp,Lin,Pref,NNul,NVol,Bit) 91 02 End Collection C0
You'll find __swi version of USB_WriteEP in Keil USBCDC example, as follows.
C:\Keil\ARM\Boards\Keil\MCB2300\USBCDC usbhw.h extern DWORD __swi(8) USB_WriteEP (DWORD EPNum, BYTE *pData, DWORD cnt); usbhw.c /* * Write USB Endpoint Data * Parameters: EPNum: Endpoint Number * EPNum.0..3: Address * EPNum.7: Dir * pData: Pointer to Data Buffer * cnt: Number of bytes to write * Return Value: Number of bytes written */ DWORD __swi(8) USB_WriteEP (DWORD EPNum, BYTE *pData, DWORD cnt); DWORD __SWI_8 (DWORD EPNum, BYTE *pData, DWORD cnt) { //DWORD USB_WriteEP (DWORD EPNum, BYTE *pData, DWORD cnt) { DWORD n; USB_CTRL = ((EPNum & 0x0F) << 2) | CTRL_WR_EN; TX_PLENGTH = cnt; for (n = 0; n < (cnt + 3) / 4; n++) { TX_DATA = *((__packed DWORD *)pData); pData += 4; } USB_CTRL = 0; WrCmd(CMD_SEL_EP(EPAdr(EPNum))); WrCmd(CMD_VALID_BUF); return (cnt); }
In the background, SWI.s is dragged in from RL_ARM,
;/*****************************************************************************/ ;/* SWI.S: SWI Handler */ ;/*****************************************************************************/ ;/* This file is part of the uVision/ARM development tools. */ ;/* Copyright (c) 2005-2006 Keil Software. All rights reserved. */ ;/* This software may only be used under the terms of a valid, current, */ ;/* end user licence from KEIL for a compatible version of KEIL software */ ;/* development tools. Nothing else gives you the right to use this software. */ ;/*****************************************************************************/ T_Bit EQU 0x20 PRESERVE8 ; 8-Byte aligned Stack AREA SWI_Area, CODE, READONLY ARM EXPORT SWI_Handler SWI_Handler STMFD SP!, {R12, LR} ; Store R12, LR MRS R12, SPSR ; Get SPSR STMFD SP!, {R8, R12} ; Store R8, SPSR TST R12, #T_Bit ; Check Thumb Bit LDRNEH R12, [LR,#-2] ; Thumb: Load Halfword BICNE R12, R12, #0xFF00 ; Extract SWI Number LDREQ R12, [LR,#-4] ; ARM: Load Word BICEQ R12, R12, #0xFF000000 ; Extract SWI Number LDR R8, SWI_Count CMP R12, R8 BHS SWI_Dead ; Overflow ADR R8, SWI_Table LDR R12, [R8,R12,LSL #2] ; Load SWI Function Address MOV LR, PC ; Return Address BX R12 ; Call SWI Function LDMFD SP!, {R8, R12} ; Load R8, SPSR MSR SPSR_cxsf, R12 ; Set SPSR LDMFD SP!, {R12, PC}^ ; Restore R12 and Return SWI_Dead B SWI_Dead ; None Existing SWI SWI_Cnt EQU (SWI_End-SWI_Table)/4 SWI_Count DCD SWI_Cnt IMPORT __SWI_8 SWI_Table DCD SWI_Dead ; SWI 0 Function Entry used by RTX DCD SWI_Dead ; SWI 1 Function Entry used by RTX DCD SWI_Dead ; SWI 2 Function Entry used by RTX DCD SWI_Dead ; SWI 3 Function Entry used by RTX DCD SWI_Dead ; SWI 4 Function Entry used by RTX DCD SWI_Dead ; SWI 5 Function Entry used by RTX DCD SWI_Dead ; SWI 6 Function Entry used by RTX DCD SWI_Dead ; SWI 7 Function Entry used by RTX DCD __SWI_8 ; SWI 8 Function Entry ; ... SWI_End END
Also, LPC2300.s is modified a little to support SWI (SVC)
LPC2300.s SVC_Stack_Size EQU 0x00000100 Vectors LDR PC, Reset_Addr LDR PC, Undef_Addr ... ... IRQ_Addr DCD IRQ_Handler FIQ_Addr DCD FIQ_Handler IMPORT SWI_Handler Undef_Handler B Undef_Handler ;SWI_Handler B SWI_Handler PAbt_Handler B PAbt_Handler DAbt_Handler B DAbt_Handler IRQ_Handler B IRQ_Handler FIQ_Handler B FIQ_Handler
Tsuneo