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USB_Host_Shield_2.0/hidboot.h

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/* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
This software may be distributed and modified under the terms of the GNU
General Public License version 2 (GPL2) as published by the Free Software
Foundation and appearing in the file GPL2.TXT included in the packaging of
this file. Please note that GPL2 Section 2[b] requires that all works based
on this software must also be made publicly available under the terms of
the GPL2 ("Copyleft").
Contact information
-------------------
Circuits At Home, LTD
Web : http://www.circuitsathome.com
e-mail : support@circuitsathome.com
*/
#if !defined(__HIDBOOT_H__)
#define __HIDBOOT_H__
#include "hid.h"
#define UHS_HID_BOOT_KEY_ZERO 0x27
#define UHS_HID_BOOT_KEY_ENTER 0x28
#define UHS_HID_BOOT_KEY_SPACE 0x2c
#define UHS_HID_BOOT_KEY_CAPS_LOCK 0x39
#define UHS_HID_BOOT_KEY_SCROLL_LOCK 0x47
#define UHS_HID_BOOT_KEY_NUM_LOCK 0x53
#define UHS_HID_BOOT_KEY_ZERO2 0x62
#define UHS_HID_BOOT_KEY_PERIOD 0x63
// Don't worry, GCC will optimize the result to a final value.
#define bitsEndpoints(p) ((((p) & HID_PROTOCOL_KEYBOARD)? 2 : 0) | (((p) & HID_PROTOCOL_MOUSE)? 1 : 0))
#define totalEndpoints(p) ((bitsEndpoints(p) == 3) ? 3 : 2)
#define epMUL(p) ((((p) & HID_PROTOCOL_KEYBOARD)? 1 : 0) + (((p) & HID_PROTOCOL_MOUSE)? 1 : 0))
// Already defined in hid.h
// #define HID_MAX_HID_CLASS_DESCRIPTORS 5
struct MOUSEINFO {
struct {
uint8_t bmLeftButton : 1;
uint8_t bmRightButton : 1;
uint8_t bmMiddleButton : 1;
uint8_t bmDummy : 5;
};
int8_t dX;
int8_t dY;
};
class MouseReportParser : public HIDReportParser {
union {
MOUSEINFO mouseInfo;
uint8_t bInfo[sizeof (MOUSEINFO)];
} prevState;
public:
void Parse(HID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf);
protected:
virtual void OnMouseMove(MOUSEINFO *mi) {
};
virtual void OnLeftButtonUp(MOUSEINFO *mi) {
};
virtual void OnLeftButtonDown(MOUSEINFO *mi) {
};
virtual void OnRightButtonUp(MOUSEINFO *mi) {
};
virtual void OnRightButtonDown(MOUSEINFO *mi) {
};
virtual void OnMiddleButtonUp(MOUSEINFO *mi) {
};
virtual void OnMiddleButtonDown(MOUSEINFO *mi) {
};
};
struct MODIFIERKEYS {
uint8_t bmLeftCtrl : 1;
uint8_t bmLeftShift : 1;
uint8_t bmLeftAlt : 1;
uint8_t bmLeftGUI : 1;
uint8_t bmRightCtrl : 1;
uint8_t bmRightShift : 1;
uint8_t bmRightAlt : 1;
uint8_t bmRightGUI : 1;
};
struct KBDINFO {
struct {
uint8_t bmLeftCtrl : 1;
uint8_t bmLeftShift : 1;
uint8_t bmLeftAlt : 1;
uint8_t bmLeftGUI : 1;
uint8_t bmRightCtrl : 1;
uint8_t bmRightShift : 1;
uint8_t bmRightAlt : 1;
uint8_t bmRightGUI : 1;
};
uint8_t bReserved;
uint8_t Keys[6];
};
struct KBDLEDS {
uint8_t bmNumLock : 1;
uint8_t bmCapsLock : 1;
uint8_t bmScrollLock : 1;
uint8_t bmCompose : 1;
uint8_t bmKana : 1;
uint8_t bmReserved : 3;
};
class KeyboardReportParser : public HIDReportParser {
static const uint8_t numKeys[10];
static const uint8_t symKeysUp[12];
static const uint8_t symKeysLo[12];
static const uint8_t padKeys[5];
protected:
union {
KBDINFO kbdInfo;
uint8_t bInfo[sizeof (KBDINFO)];
} prevState;
union {
KBDLEDS kbdLeds;
uint8_t bLeds;
} kbdLockingKeys;
uint8_t OemToAscii(uint8_t mod, uint8_t key);
public:
KeyboardReportParser() {
kbdLockingKeys.bLeds = 0;
};
void Parse(HID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf);
protected:
virtual uint8_t HandleLockingKeys(HID* hid, uint8_t key) {
uint8_t old_keys = kbdLockingKeys.bLeds;
switch(key) {
case UHS_HID_BOOT_KEY_NUM_LOCK:
kbdLockingKeys.kbdLeds.bmNumLock = ~kbdLockingKeys.kbdLeds.bmNumLock;
break;
case UHS_HID_BOOT_KEY_CAPS_LOCK:
kbdLockingKeys.kbdLeds.bmCapsLock = ~kbdLockingKeys.kbdLeds.bmCapsLock;
break;
case UHS_HID_BOOT_KEY_SCROLL_LOCK:
kbdLockingKeys.kbdLeds.bmScrollLock = ~kbdLockingKeys.kbdLeds.bmScrollLock;
break;
}
if(old_keys != kbdLockingKeys.bLeds && hid) {
uint8_t lockLeds = kbdLockingKeys.bLeds;
return (hid->SetReport(0, 0/*hid->GetIface()*/, 2, 0, 1, &lockLeds));
}
return 0;
};
virtual void OnControlKeysChanged(uint8_t before, uint8_t after) {
};
virtual void OnKeyDown(uint8_t mod, uint8_t key) {
};
virtual void OnKeyUp(uint8_t mod, uint8_t key) {
};
virtual const uint8_t *getNumKeys() {
return numKeys;
};
virtual const uint8_t *getSymKeysUp() {
return symKeysUp;
};
virtual const uint8_t *getSymKeysLo() {
return symKeysLo;
};
virtual const uint8_t *getPadKeys() {
return padKeys;
};
};
template <const uint8_t BOOT_PROTOCOL>
class HIDBoot : public HID //public USBDeviceConfig, public UsbConfigXtracter
{
EpInfo epInfo[totalEndpoints(BOOT_PROTOCOL)];
HIDReportParser *pRptParser[epMUL(BOOT_PROTOCOL)];
uint8_t bConfNum; // configuration number
uint8_t bIfaceNum; // Interface Number
uint8_t bNumIface; // number of interfaces in the configuration
uint8_t bNumEP; // total number of EP in the configuration
uint32_t qNextPollTime; // next poll time
bool bPollEnable; // poll enable flag
uint8_t bInterval; // largest interval
void Initialize();
virtual HIDReportParser* GetReportParser(uint8_t id) {
return pRptParser[id];
};
public:
HIDBoot(USB *p);
virtual bool SetReportParser(uint8_t id, HIDReportParser *prs) {
pRptParser[id] = prs;
return true;
};
// USBDeviceConfig implementation
uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
uint8_t Release();
uint8_t Poll();
virtual uint8_t GetAddress() {
return bAddress;
};
virtual bool isReady() {
return bPollEnable;
};
// UsbConfigXtracter implementation
// Method should be defined here if virtual.
virtual void EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *ep);
virtual bool DEVCLASSOK(uint8_t klass) {
return (klass == USB_CLASS_HID);
}
virtual bool DEVSUBCLASSOK(uint8_t subklass) {
return (subklass == BOOT_PROTOCOL);
}
};
template <const uint8_t BOOT_PROTOCOL>
HIDBoot<BOOT_PROTOCOL>::HIDBoot(USB *p) :
HID(p),
qNextPollTime(0),
bPollEnable(false) {
Initialize();
for(int i = 0; i < epMUL(BOOT_PROTOCOL); i++) {
pRptParser[i] = NULL;
}
if(pUsb)
pUsb->RegisterDeviceClass(this);
}
template <const uint8_t BOOT_PROTOCOL>
void HIDBoot<BOOT_PROTOCOL>::Initialize() {
for(int i = 0; i < totalEndpoints(BOOT_PROTOCOL); i++) {
epInfo[i].epAddr = 0;
epInfo[i].maxPktSize = (i) ? 0 : 8;
epInfo[i].bmSndToggle = 0;
epInfo[i].bmRcvToggle = 0;
epInfo[i].bmNakPower = (i) ? USB_NAK_NOWAIT : USB_NAK_MAX_POWER;
}
bNumEP = 1;
bNumIface = 0;
bConfNum = 0;
}
template <const uint8_t BOOT_PROTOCOL>
uint8_t HIDBoot<BOOT_PROTOCOL>::Init(uint8_t parent, uint8_t port, bool lowspeed) {
const uint8_t constBufSize = sizeof (USB_DEVICE_DESCRIPTOR);
uint8_t buf[constBufSize];
uint8_t rcode;
UsbDevice *p = NULL;
EpInfo *oldep_ptr = NULL;
uint8_t len = 0;
//uint16_t cd_len = 0;
uint8_t num_of_conf; // number of configurations
//uint8_t num_of_intf; // number of interfaces
AddressPool &addrPool = pUsb->GetAddressPool();
USBTRACE("BM Init\r\n");
//USBTRACE2("totalEndpoints:", (uint8_t) (totalEndpoints(BOOT_PROTOCOL)));
//USBTRACE2("epMUL:", epMUL(BOOT_PROTOCOL));
if(bAddress)
return USB_ERROR_CLASS_INSTANCE_ALREADY_IN_USE;
bInterval = 0;
// Get pointer to pseudo device with address 0 assigned
p = addrPool.GetUsbDevicePtr(0);
if(!p)
return USB_ERROR_ADDRESS_NOT_FOUND_IN_POOL;
if(!p->epinfo) {
USBTRACE("epinfo\r\n");
return USB_ERROR_EPINFO_IS_NULL;
}
// Save old pointer to EP_RECORD of address 0
oldep_ptr = p->epinfo;
// Temporary assign new pointer to epInfo to p->epinfo in order to avoid toggle inconsistence
p->epinfo = epInfo;
p->lowspeed = lowspeed;
// Get device descriptor
rcode = pUsb->getDevDescr(0, 0, 8, (uint8_t*)buf);
if(!rcode)
len = (buf[0] > constBufSize) ? constBufSize : buf[0];
if(rcode) {
// Restore p->epinfo
p->epinfo = oldep_ptr;
goto FailGetDevDescr;
}
// Restore p->epinfo
p->epinfo = oldep_ptr;
// Allocate new address according to device class
bAddress = addrPool.AllocAddress(parent, false, port);
if(!bAddress)
return USB_ERROR_OUT_OF_ADDRESS_SPACE_IN_POOL;
// Extract Max Packet Size from the device descriptor
epInfo[0].maxPktSize = (uint8_t)((USB_DEVICE_DESCRIPTOR*)buf)->bMaxPacketSize0;
// Assign new address to the device
rcode = pUsb->setAddr(0, 0, bAddress);
if(rcode) {
p->lowspeed = false;
addrPool.FreeAddress(bAddress);
bAddress = 0;
USBTRACE2("setAddr:", rcode);
return rcode;
}
//delay(2); //per USB 2.0 sect.9.2.6.3
USBTRACE2("Addr:", bAddress);
p->lowspeed = false;
p = addrPool.GetUsbDevicePtr(bAddress);
if(!p)
return USB_ERROR_ADDRESS_NOT_FOUND_IN_POOL;
p->lowspeed = lowspeed;
if(len)
rcode = pUsb->getDevDescr(bAddress, 0, len, (uint8_t*)buf);
if(rcode)
goto FailGetDevDescr;
num_of_conf = ((USB_DEVICE_DESCRIPTOR*)buf)->bNumConfigurations;
USBTRACE2("NC:", num_of_conf);
// GCC will optimize unused stuff away.
if((BOOT_PROTOCOL & (HID_PROTOCOL_KEYBOARD | HID_PROTOCOL_MOUSE)) == (HID_PROTOCOL_KEYBOARD | HID_PROTOCOL_MOUSE)) {
USBTRACE("HID_PROTOCOL_KEYBOARD AND MOUSE\r\n");
ConfigDescParser<
USB_CLASS_HID,
HID_BOOT_INTF_SUBCLASS,
HID_PROTOCOL_KEYBOARD | HID_PROTOCOL_MOUSE,
CP_MASK_COMPARE_ALL > confDescrParser(this);
confDescrParser.SetOR(); // Use the OR variant.
for(uint8_t i = 0; i < num_of_conf; i++) {
pUsb->getConfDescr(bAddress, 0, i, &confDescrParser);
if(bNumEP == (uint8_t)(totalEndpoints(BOOT_PROTOCOL)))
break;
}
} else {
// GCC will optimize unused stuff away.
if(BOOT_PROTOCOL & HID_PROTOCOL_KEYBOARD) {
USBTRACE("HID_PROTOCOL_KEYBOARD\r\n");
for(uint8_t i = 0; i < num_of_conf; i++) {
ConfigDescParser<
USB_CLASS_HID,
HID_BOOT_INTF_SUBCLASS,
HID_PROTOCOL_KEYBOARD,
CP_MASK_COMPARE_ALL> confDescrParserA(this);
pUsb->getConfDescr(bAddress, 0, i, &confDescrParserA);
if(bNumEP == (uint8_t)(totalEndpoints(BOOT_PROTOCOL)))
break;
}
}
// GCC will optimize unused stuff away.
if(BOOT_PROTOCOL & HID_PROTOCOL_MOUSE) {
USBTRACE("HID_PROTOCOL_MOUSE\r\n");
for(uint8_t i = 0; i < num_of_conf; i++) {
ConfigDescParser<
USB_CLASS_HID,
HID_BOOT_INTF_SUBCLASS,
HID_PROTOCOL_MOUSE,
CP_MASK_COMPARE_ALL> confDescrParserB(this);
pUsb->getConfDescr(bAddress, 0, i, &confDescrParserB);
if(bNumEP == ((uint8_t)(totalEndpoints(BOOT_PROTOCOL))))
break;
}
}
}
USBTRACE2("bNumEP:", bNumEP);
if(bNumEP != (uint8_t)(totalEndpoints(BOOT_PROTOCOL))) {
rcode = USB_DEV_CONFIG_ERROR_DEVICE_NOT_SUPPORTED;
goto Fail;
}
// Assign epInfo to epinfo pointer
rcode = pUsb->setEpInfoEntry(bAddress, bNumEP, epInfo);
//USBTRACE2("setEpInfoEntry returned ", rcode);
USBTRACE2("Cnf:", bConfNum);
delay(1000);
// Set Configuration Value
rcode = pUsb->setConf(bAddress, 0, bConfNum);
if(rcode)
goto FailSetConfDescr;
delay(1000);
USBTRACE2("bIfaceNum:", bIfaceNum);
USBTRACE2("bNumIface:", bNumIface);
// Yes, mouse wants SetProtocol and SetIdle too!
for(uint8_t i = 0; i < epMUL(BOOT_PROTOCOL); i++) {
USBTRACE2("\r\nInterface:", i);
rcode = SetProtocol(i, HID_BOOT_PROTOCOL);
if(rcode) goto FailSetProtocol;
USBTRACE2("PROTOCOL SET HID_BOOT rcode:", rcode);
rcode = SetIdle(i, 0, 0);
USBTRACE2("SET_IDLE rcode:", rcode);
// if(rcode) goto FailSetIdle; This can fail.
// Get the RPIPE and just throw it away.
SinkParser<USBReadParser, uint16_t, uint16_t> sink;
rcode = GetReportDescr(i, &sink);
USBTRACE2("RPIPE rcode:", rcode);
}
// Get RPIPE and throw it away.
if(BOOT_PROTOCOL & HID_PROTOCOL_KEYBOARD) {
// Wake keyboard interface by twinkling up to 5 LEDs that are in the spec.
// kana, compose, scroll, caps, num
rcode = 0x20; // Reuse rcode.
while(rcode) {
rcode >>= 1;
// Ignore any error returned, we don't care if LED is not supported
SetReport(0, 0, 2, 0, 1, &rcode); // Eventually becomes zero (All off)
delay(25);
}
}
USBTRACE("BM configured\r\n");
bPollEnable = true;
return 0;
FailGetDevDescr:
#ifdef DEBUG_USB_HOST
NotifyFailGetDevDescr();
goto Fail;
#endif
//FailSetDevTblEntry:
//#ifdef DEBUG_USB_HOST
// NotifyFailSetDevTblEntry();
// goto Fail;
//#endif
//FailGetConfDescr:
//#ifdef DEBUG_USB_HOST
// NotifyFailGetConfDescr();
// goto Fail;
//#endif
FailSetConfDescr:
#ifdef DEBUG_USB_HOST
NotifyFailSetConfDescr();
goto Fail;
#endif
FailSetProtocol:
#ifdef DEBUG_USB_HOST
USBTRACE("SetProto:");
goto Fail;
#endif
//FailSetIdle:
//#ifdef DEBUG_USB_HOST
// USBTRACE("SetIdle:");
//#endif
Fail:
#ifdef DEBUG_USB_HOST
NotifyFail(rcode);
#endif
Release();
return rcode;
}
template <const uint8_t BOOT_PROTOCOL>
void HIDBoot<BOOT_PROTOCOL>::EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *pep) {
// If the first configuration satisfies, the others are not considered.
//if(bNumEP > 1 && conf != bConfNum)
if(bNumEP == totalEndpoints(BOOT_PROTOCOL))
return;
bConfNum = conf;
bIfaceNum = iface;
if((pep->bmAttributes & 0x03) == 3 && (pep->bEndpointAddress & 0x80) == 0x80) {
if(pep->bInterval > bInterval) bInterval = pep->bInterval;
// Fill in the endpoint info structure
epInfo[bNumEP].epAddr = (pep->bEndpointAddress & 0x0F);
epInfo[bNumEP].maxPktSize = (uint8_t)pep->wMaxPacketSize;
epInfo[bNumEP].bmSndToggle = 0;
epInfo[bNumEP].bmRcvToggle = 0;
epInfo[bNumEP].bmNakPower = USB_NAK_NOWAIT;
bNumEP++;
}
}
template <const uint8_t BOOT_PROTOCOL>
uint8_t HIDBoot<BOOT_PROTOCOL>::Release() {
pUsb->GetAddressPool().FreeAddress(bAddress);
bConfNum = 0;
bIfaceNum = 0;
bNumEP = 1;
bAddress = 0;
qNextPollTime = 0;
bPollEnable = false;
return 0;
}
template <const uint8_t BOOT_PROTOCOL>
uint8_t HIDBoot<BOOT_PROTOCOL>::Poll() {
uint8_t rcode = 0;
if(bPollEnable && ((long)(millis() - qNextPollTime) >= 0L)) {
// To-do: optimize manually, using the for loop only if needed.
for(int i = 0; i < epMUL(BOOT_PROTOCOL); i++) {
const uint16_t const_buff_len = 16;
uint8_t buf[const_buff_len];
USBTRACE3("(hidboot.h) i=", i, 0x81);
USBTRACE3("(hidboot.h) epInfo[epInterruptInIndex + i].epAddr=", epInfo[epInterruptInIndex + i].epAddr, 0x81);
USBTRACE3("(hidboot.h) epInfo[epInterruptInIndex + i].maxPktSize=", epInfo[epInterruptInIndex + i].maxPktSize, 0x81);
uint16_t read = (uint16_t)epInfo[epInterruptInIndex + i].maxPktSize;
rcode = pUsb->inTransfer(bAddress, epInfo[epInterruptInIndex + i].epAddr, &read, buf);
// SOME buggy dongles report extra keys (like sleep) using a 2 byte packet on the wrong endpoint.
// Since keyboard and mice must report at least 3 bytes, we ignore the extra data.
if(!rcode && read > 2) {
if(pRptParser[i])
pRptParser[i]->Parse((HID*)this, 0, (uint8_t)read, buf);
#ifdef DEBUG_USB_HOST
// We really don't care about errors and anomalies unless we are debugging.
} else {
if(rcode != hrNAK) {
USBTRACE3("(hidboot.h) Poll:", rcode, 0x81);
}
if(!rcode && read) {
USBTRACE3("(hidboot.h) Strange read count: ", read, 0x80);
USBTRACE3("(hidboot.h) Interface:", i, 0x80);
}
}
if(!rcode && read && (UsbDEBUGlvl > 0x7f)) {
for(uint8_t i = 0; i < read; i++) {
PrintHex<uint8_t > (buf[i], 0x80);
USBTRACE1(" ", 0x80);
}
if(read)
USBTRACE1("\r\n", 0x80);
#endif
}
}
qNextPollTime = millis() + bInterval;
}
return rcode;
}
#endif // __HIDBOOTMOUSE_H__
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