www.pudn.com > USB_HID.rar > usbcore.c
/*----------------------------------------------------------------------------
* U S B - K e r n e l
*----------------------------------------------------------------------------
* Name: USBCORE.C
* Purpose: USB Core Module
* Version: V1.03
*----------------------------------------------------------------------------
* This file is part of the uVision/ARM development tools.
* Copyright (c) 2005 Keil Software. All rights reserved.
*---------------------------------------------------------------------------*/
#include "type.h"
#include "usb.h"
#include "usbcfg.h"
#include "usbhw.h"
#include "usbcore.h"
#include "usbdesc.h"
#include "usbuser.h"
#if (USB_AUDIO)
#include "audio.h"
#include "adcuser.h"
#endif
#if (USB_HID)
#include "hid.h"
#include "hiduser.h"
#endif
#if (USB_MSC)
#include "msc.h"
#include "mscuser.h"
#endif
WORD USB_DeviceStatus;
BYTE USB_DeviceAddress;
BYTE USB_Configuration;
DWORD USB_EndPointMask;
DWORD USB_EndPointHalt;
BYTE USB_NumInterfaces;
BYTE USB_AltSetting[USB_IF_NUM];
BYTE EP0Buf[USB_MAX_PACKET0];
USB_EP_DATA EP0Data;
USB_SETUP_PACKET SetupPacket;
/*
* Reset USB Core
* Parameters: None
* Return Value: None
*/
void USB_ResetCore (void) {
USB_DeviceStatus = USB_POWER;
USB_DeviceAddress = 0;
USB_Configuration = 0;
USB_EndPointMask = 0x00010001;
USB_EndPointHalt = 0x00000000;
}
/*
* USB Request - Setup Stage
* Parameters: None (global SetupPacket)
* Return Value: None
*/
void USB_SetupStage (void) {
USB_ReadEP(0x00, (BYTE *)&SetupPacket);
}
/*
* USB Request - Data In Stage
* Parameters: None (global EP0Data)
* Return Value: None
*/
void USB_DataInStage (void) {
DWORD cnt;
if (EP0Data.Count > USB_MAX_PACKET0) {
cnt = USB_MAX_PACKET0;
} else {
cnt = EP0Data.Count;
}
cnt = USB_WriteEP(0x80, EP0Data.pData, cnt);
EP0Data.pData += cnt;
EP0Data.Count -= cnt;
}
/*
* USB Request - Data Out Stage
* Parameters: None (global EP0Data)
* Return Value: None
*/
void USB_DataOutStage (void) {
DWORD cnt;
cnt = USB_ReadEP(0x00, EP0Data.pData);
EP0Data.pData += cnt;
EP0Data.Count -= cnt;
}
/*
* USB Request - Status In Stage
* Parameters: None
* Return Value: None
*/
void USB_StatusInStage (void) {
USB_WriteEP(0x80, NULL, 0);
}
/*
* USB Request - Status Out Stage
* Parameters: None
* Return Value: None
*/
void USB_StatusOutStage (void) {
USB_ReadEP(0x00, EP0Buf);
}
/*
* Get Status USB Request
* Parameters: None (global SetupPacket)
* Return Value: TRUE - Success, FALSE - Error
*/
__inline BOOL USB_GetStatus (void) {
DWORD n, m;
switch (SetupPacket.bmRequestType.BM.Recipient) {
case REQUEST_TO_DEVICE:
EP0Data.pData = (BYTE *)&USB_DeviceStatus;
USB_DataInStage();
break;
case REQUEST_TO_INTERFACE:
if ((USB_Configuration != 0) && (SetupPacket.wIndex.WB.L < USB_NumInterfaces)) {
*((__packed WORD *)EP0Buf) = 0;
EP0Data.pData = EP0Buf;
USB_DataInStage();
} else {
return (FALSE);
}
break;
case REQUEST_TO_ENDPOINT:
n = SetupPacket.wIndex.WB.L & 0x8F;
m = (n & 0x80) ? ((1 << 16) << n) : (1 << n);
if (((USB_Configuration != 0) || ((n & 0x0F) == 0)) && (USB_EndPointMask & m)) {
*((__packed WORD *)EP0Buf) = (USB_EndPointHalt & m) ? 1 : 0;
EP0Data.pData = EP0Buf;
USB_DataInStage();
} else {
return (FALSE);
}
break;
default:
return (FALSE);
}
return (TRUE);
}
/*
* Set/Clear Feature USB Request
* Parameters: sc: 0 - Clear, 1 - Set
* None (global SetupPacket)
* Return Value: TRUE - Success, FALSE - Error
*/
__inline BOOL USB_SetClrFeature (DWORD sc) {
DWORD n, m;
switch (SetupPacket.bmRequestType.BM.Recipient) {
case REQUEST_TO_DEVICE:
if (SetupPacket.wValue.W == USB_FEATURE_REMOTE_WAKEUP) {
if (sc) {
USB_WakeUpCfg(TRUE);
USB_DeviceStatus |= USB_GETSTATUS_REMOTE_WAKEUP;
} else {
USB_WakeUpCfg(FALSE);
USB_DeviceStatus &= ~USB_GETSTATUS_REMOTE_WAKEUP;
}
} else {
return (FALSE);
}
break;
case REQUEST_TO_INTERFACE:
return (FALSE);
case REQUEST_TO_ENDPOINT:
n = SetupPacket.wIndex.WB.L & 0x8F;
m = (n & 0x80) ? ((1 << 16) << n) : (1 << n);
if ((USB_Configuration != 0) && ((n & 0x0F) != 0) && (USB_EndPointMask & m)) {
if (SetupPacket.wValue.W == USB_FEATURE_ENDPOINT_STALL) {
if (sc) {
USB_SetStallEP(n);
USB_EndPointHalt |= m;
} else {
USB_ClrStallEP(n);
USB_EndPointHalt &= ~m;
}
} else {
return (FALSE);
}
} else {
return (FALSE);
}
break;
default:
return (FALSE);
}
return (TRUE);
}
/*
* Get Descriptor USB Request
* Parameters: None (global SetupPacket)
* Return Value: TRUE - Success, FALSE - Error
*/
__inline BOOL USB_GetDescriptor (void) {
BYTE *pD;
DWORD len, n;
switch (SetupPacket.bmRequestType.BM.Recipient) {
case REQUEST_TO_DEVICE:
switch (SetupPacket.wValue.WB.H) {
case USB_DEVICE_DESCRIPTOR_TYPE:
EP0Data.pData = (BYTE *)USB_DeviceDescriptor;
len = USB_DEVICE_DESC_SIZE;
break;
case USB_CONFIGURATION_DESCRIPTOR_TYPE:
pD = (BYTE *)USB_ConfigDescriptor;
for (n = 0; n != SetupPacket.wValue.WB.L; n++) {
if (((USB_CONFIGURATION_DESCRIPTOR *)pD)->bLength != 0) {
pD += ((USB_CONFIGURATION_DESCRIPTOR *)pD)->wTotalLength;
}
}
if (((USB_CONFIGURATION_DESCRIPTOR *)pD)->bLength == 0) {
return (FALSE);
}
EP0Data.pData = pD;
len = ((USB_CONFIGURATION_DESCRIPTOR *)pD)->wTotalLength;
break;
case USB_STRING_DESCRIPTOR_TYPE:
EP0Data.pData = (BYTE *)USB_StringDescriptor + SetupPacket.wValue.WB.L;
len = ((USB_STRING_DESCRIPTOR *)EP0Data.pData)->bLength;
break;
default:
return (FALSE);
}
break;
case REQUEST_TO_INTERFACE:
switch (SetupPacket.wValue.WB.H) {
#if USB_HID
case HID_HID_DESCRIPTOR_TYPE:
if (SetupPacket.wIndex.WB.L != USB_HID_IF_NUM) {
return (FALSE); /* Only Single HID Interface is supported */
}
EP0Data.pData = (BYTE *)USB_ConfigDescriptor + HID_DESC_OFFSET;
len = HID_DESC_SIZE;
break;
case HID_REPORT_DESCRIPTOR_TYPE:
if (SetupPacket.wIndex.WB.L != USB_HID_IF_NUM) {
return (FALSE); /* Only Single HID Interface is supported */
}
EP0Data.pData = (BYTE *)HID_ReportDescriptor;
len = HID_ReportDescSize;
break;
case HID_PHYSICAL_DESCRIPTOR_TYPE:
return (FALSE); /* HID Physical Descriptor is not supported */
#endif
default:
return (FALSE);
}
break;
default:
return (FALSE);
}
if (EP0Data.Count > len) {
EP0Data.Count = len;
}
USB_DataInStage();
return (TRUE);
}
/*
* Set Configuration USB Request
* Parameters: None (global SetupPacket)
* Return Value: TRUE - Success, FALSE - Error
*/
__inline BOOL USB_SetConfiguration (void) {
USB_COMMON_DESCRIPTOR *pD;
DWORD alt, n, m;
if (SetupPacket.wValue.WB.L) {
pD = (USB_COMMON_DESCRIPTOR *)USB_ConfigDescriptor;
while (pD->bLength) {
switch (pD->bDescriptorType) {
case USB_CONFIGURATION_DESCRIPTOR_TYPE:
if (((USB_CONFIGURATION_DESCRIPTOR *)pD)->bConfigurationValue == SetupPacket.wValue.WB.L) {
USB_Configuration = SetupPacket.wValue.WB.L;
USB_NumInterfaces = ((USB_CONFIGURATION_DESCRIPTOR *)pD)->bNumInterfaces;
for (n = 0; n < USB_IF_NUM; n++) {
USB_AltSetting[n] = 0;
}
for (n = 1; n < 16; n++) {
if (USB_EndPointMask & (1 << n)) {
USB_DisableEP(n);
}
if (USB_EndPointMask & ((1 << 16) << n)) {
USB_DisableEP(n | 0x80);
}
}
USB_EndPointMask = 0x00010001;
USB_EndPointHalt = 0x00000000;
USB_Configure(TRUE);
if (((USB_CONFIGURATION_DESCRIPTOR *)pD)->bmAttributes & USB_CONFIG_SELF_POWERED) {
USB_DeviceStatus |= USB_GETSTATUS_SELF_POWERED;
} else {
USB_DeviceStatus &= ~USB_GETSTATUS_SELF_POWERED;
}
} else {
(BYTE *)pD += ((USB_CONFIGURATION_DESCRIPTOR *)pD)->wTotalLength;
continue;
}
break;
case USB_INTERFACE_DESCRIPTOR_TYPE:
alt = ((USB_INTERFACE_DESCRIPTOR *)pD)->bAlternateSetting;
break;
case USB_ENDPOINT_DESCRIPTOR_TYPE:
if (alt == 0) {
n = ((USB_ENDPOINT_DESCRIPTOR *)pD)->bEndpointAddress & 0x8F;
m = (n & 0x80) ? ((1 << 16) << n) : (1 << n);
USB_EndPointMask |= m;
USB_ConfigEP((USB_ENDPOINT_DESCRIPTOR *)pD);
USB_EnableEP(n);
USB_ResetEP(n);
}
break;
}
(BYTE *)pD += pD->bLength;
}
}
else {
USB_Configuration = 0;
for (n = 1; n < 16; n++) {
if (USB_EndPointMask & (1 << n)) {
USB_DisableEP(n);
}
if (USB_EndPointMask & ((1 << 16) << n)) {
USB_DisableEP(n | 0x80);
}
}
USB_EndPointMask = 0x00010001;
USB_EndPointHalt = 0x00000000;
USB_Configure(FALSE);
}
if (USB_Configuration == SetupPacket.wValue.WB.L) {
return (TRUE);
} else {
return (FALSE);
}
}
/*
* Set Interface USB Request
* Parameters: None (global SetupPacket)
* Return Value: TRUE - Success, FALSE - Error
*/
__inline BOOL USB_SetInterface (void) {
USB_COMMON_DESCRIPTOR *pD;
DWORD ifn, alt, old, msk, n, m;
BOOL set;
if (USB_Configuration == 0) return (FALSE);
set = FALSE;
pD = (USB_COMMON_DESCRIPTOR *)USB_ConfigDescriptor;
while (pD->bLength) {
switch (pD->bDescriptorType) {
case USB_CONFIGURATION_DESCRIPTOR_TYPE:
if (((USB_CONFIGURATION_DESCRIPTOR *)pD)->bConfigurationValue != USB_Configuration) {
(BYTE *)pD += ((USB_CONFIGURATION_DESCRIPTOR *)pD)->wTotalLength;
continue;
}
break;
case USB_INTERFACE_DESCRIPTOR_TYPE:
ifn = ((USB_INTERFACE_DESCRIPTOR *)pD)->bInterfaceNumber;
alt = ((USB_INTERFACE_DESCRIPTOR *)pD)->bAlternateSetting;
msk = 0;
if ((ifn == SetupPacket.wIndex.WB.L) && (alt == SetupPacket.wValue.WB.L)) {
set = TRUE;
old = USB_AltSetting[ifn];
USB_AltSetting[ifn] = (BYTE)alt;
}
break;
case USB_ENDPOINT_DESCRIPTOR_TYPE:
if (ifn == SetupPacket.wIndex.WB.L) {
n = ((USB_ENDPOINT_DESCRIPTOR *)pD)->bEndpointAddress & 0x8F;
m = (n & 0x80) ? ((1 << 16) << n) : (1 << n);
if (alt == SetupPacket.wValue.WB.L) {
USB_EndPointMask |= m;
USB_EndPointHalt &= ~m;
USB_ConfigEP((USB_ENDPOINT_DESCRIPTOR *)pD);
USB_EnableEP(n);
USB_ResetEP(n);
msk |= m;
}
else if ((alt == old) && ((msk & m) == 0)) {
USB_EndPointMask &= ~m;
USB_EndPointHalt &= ~m;
USB_DisableEP(n);
}
}
break;
}
(BYTE *)pD += pD->bLength;
}
return (set);
}
/*
* USB Endpoint 0 Event Callback
* Parameter: event
*/
void USB_EndPoint0 (DWORD event) {
switch (event) {
case USB_EVT_SETUP:
USB_SetupStage();
USB_DirCtrlEP(SetupPacket.bmRequestType.BM.Dir);
EP0Data.Count = SetupPacket.wLength;
switch (SetupPacket.bmRequestType.BM.Type) {
case REQUEST_STANDARD:
switch (SetupPacket.bRequest) {
case USB_REQUEST_GET_STATUS:
if (!USB_GetStatus()) {
goto stall_i;
}
break;
case USB_REQUEST_CLEAR_FEATURE:
if (!USB_SetClrFeature(0)) {
goto stall_i;
}
USB_StatusInStage();
#if USB_FEATURE_EVENT
USB_Feature_Event();
#endif
break;
case USB_REQUEST_SET_FEATURE:
if (!USB_SetClrFeature(1)) {
goto stall_i;
}
USB_StatusInStage();
#if USB_FEATURE_EVENT
USB_Feature_Event();
#endif
break;
case USB_REQUEST_SET_ADDRESS:
switch (SetupPacket.bmRequestType.BM.Recipient) {
case REQUEST_TO_DEVICE:
USB_DeviceAddress = 0x80 | SetupPacket.wValue.WB.L;
USB_StatusInStage();
break;
default:
goto stall_i;
}
break;
case USB_REQUEST_GET_DESCRIPTOR:
if (!USB_GetDescriptor()) {
goto stall_i;
}
break;
case USB_REQUEST_SET_DESCRIPTOR:
/*stall_o:*/ USB_SetStallEP(0x00);
EP0Data.Count = 0;
break;
case USB_REQUEST_GET_CONFIGURATION:
switch (SetupPacket.bmRequestType.BM.Recipient) {
case REQUEST_TO_DEVICE:
EP0Data.pData = &USB_Configuration;
USB_DataInStage();
break;
default:
goto stall_i;
}
break;
case USB_REQUEST_SET_CONFIGURATION:
switch (SetupPacket.bmRequestType.BM.Recipient) {
case REQUEST_TO_DEVICE:
if (!USB_SetConfiguration()) {
goto stall_i;
}
USB_StatusInStage();
#if USB_CONFIGURE_EVENT
USB_Configure_Event();
#endif
break;
default:
goto stall_i;
}
break;
case USB_REQUEST_GET_INTERFACE:
switch (SetupPacket.bmRequestType.BM.Recipient) {
case REQUEST_TO_INTERFACE:
if ((USB_Configuration != 0) &&
(SetupPacket.wIndex.WB.L < USB_NumInterfaces)) {
EP0Data.pData = USB_AltSetting + SetupPacket.wIndex.WB.L;
USB_DataInStage();
} else {
goto stall_i;
}
break;
default:
goto stall_i;
}
break;
case USB_REQUEST_SET_INTERFACE:
switch (SetupPacket.bmRequestType.BM.Recipient) {
case REQUEST_TO_INTERFACE:
if (!USB_SetInterface()) {
goto stall_i;
}
USB_StatusInStage();
#if USB_INTERFACE_EVENT
USB_Interface_Event();
#endif
break;
default:
goto stall_i;
}
break;
default:
goto stall_i;
}
break;
case REQUEST_CLASS:
#if USB_CLASS
switch (SetupPacket.bmRequestType.BM.Recipient) {
case REQUEST_TO_INTERFACE:
#if USB_HID
if (SetupPacket.wIndex.WB.L == USB_HID_IF_NUM) {
switch (SetupPacket.bRequest) {
case HID_REQUEST_GET_REPORT:
if (HID_GetReport()) {
EP0Data.pData = EP0Buf;
USB_DataInStage();
goto class_ok;
}
break;
case HID_REQUEST_SET_REPORT:
EP0Data.pData = EP0Buf;
goto class_ok;
case HID_REQUEST_GET_IDLE:
if (HID_GetIdle()) {
EP0Data.pData = EP0Buf;
USB_DataInStage();
goto class_ok;
}
break;
case HID_REQUEST_SET_IDLE:
if (HID_SetIdle()) {
USB_StatusInStage();
goto class_ok;
}
break;
case HID_REQUEST_GET_PROTOCOL:
if (HID_GetProtocol()) {
EP0Data.pData = EP0Buf;
USB_DataInStage();
goto class_ok;
}
break;
case HID_REQUEST_SET_PROTOCOL:
if (HID_SetProtocol()) {
USB_StatusInStage();
goto class_ok;
}
break;
}
}
#endif /* USB_HID */
#if USB_MSC
if (SetupPacket.wIndex.WB.L == USB_MSC_IF_NUM) {
switch (SetupPacket.bRequest) {
case MSC_REQUEST_RESET:
if (MSC_Reset()) {
USB_StatusInStage();
goto class_ok;
}
break;
case MSC_REQUEST_GET_MAX_LUN:
if (MSC_GetMaxLUN()) {
EP0Data.pData = EP0Buf;
USB_DataInStage();
goto class_ok;
}
break;
}
}
#endif /* USB_MSC */
#if USB_AUDIO
if ((SetupPacket.wIndex.WB.L == USB_ADC_CIF_NUM) ||
(SetupPacket.wIndex.WB.L == USB_ADC_SIF1_NUM) ||
(SetupPacket.wIndex.WB.L == USB_ADC_SIF2_NUM)) {
if (SetupPacket.bmRequestType.BM.Dir) {
if (ADC_IF_GetRequest()) {
EP0Data.pData = EP0Buf;
USB_DataInStage();
goto class_ok;
}
} else {
EP0Data.pData = EP0Buf;
goto class_ok;
}
}
#endif /* USB_AUDIO */
goto stall_i;
#if USB_AUDIO
case REQUEST_TO_ENDPOINT:
if (SetupPacket.bmRequestType.BM.Dir) {
if (ADC_EP_GetRequest()) {
EP0Data.pData = EP0Buf;
USB_DataInStage();
goto class_ok;
}
} else {
EP0Data.pData = EP0Buf;
goto class_ok;
}
goto stall_i;
#endif /* USB_AUDIO */
default:
goto stall_i;
}
class_ok: break;
#else
goto stall_i;
#endif /* USB_CLASS */
case REQUEST_VENDOR:
goto stall_i;
default:
stall_i: USB_SetStallEP(0x80);
EP0Data.Count = 0;
break;
}
break;
case USB_EVT_OUT:
if (SetupPacket.bmRequestType.BM.Dir == 0) {
if (EP0Data.Count) {
USB_DataOutStage();
if (EP0Data.Count == 0) {
switch (SetupPacket.bmRequestType.BM.Type) {
case REQUEST_STANDARD:
goto stall_i;
#if (USB_CLASS)
case REQUEST_CLASS:
switch (SetupPacket.bmRequestType.BM.Recipient) {
case REQUEST_TO_INTERFACE:
#if USB_HID
if (SetupPacket.wIndex.WB.L == USB_HID_IF_NUM) {
if (!HID_SetReport()) {
goto stall_i;
}
break;
}
#endif
#if USB_AUDIO
if ((SetupPacket.wIndex.WB.L == USB_ADC_CIF_NUM) ||
(SetupPacket.wIndex.WB.L == USB_ADC_SIF1_NUM) ||
(SetupPacket.wIndex.WB.L == USB_ADC_SIF2_NUM)) {
if (!ADC_IF_SetRequest()) {
goto stall_i;
}
break;
}
#endif
goto stall_i;
case REQUEST_TO_ENDPOINT:
#if USB_AUDIO
if (ADC_EP_SetRequest()) break;
#endif
goto stall_i;
default:
goto stall_i;
}
break;
#endif
default:
goto stall_i;
}
USB_StatusInStage();
}
}
} else {
USB_StatusOutStage();
}
break;
case USB_EVT_IN:
if (SetupPacket.bmRequestType.BM.Dir == 1) {
USB_DataInStage();
} else {
if (USB_DeviceAddress & 0x80) {
USB_DeviceAddress &= 0x7F;
USB_SetAddress(USB_DeviceAddress);
}
}
break;
case USB_EVT_IN_STALL:
USB_ClrStallEP(0x80);
break;
case USB_EVT_OUT_STALL:
USB_ClrStallEP(0x00);
break;
}
}