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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 : [email protected]
- */
-
- /* Google ADK interface */
-
- #include "adk.h"
-
- const uint8_t ADK::epDataInIndex = 1;
- const uint8_t ADK::epDataOutIndex = 2;
-
- ADK::ADK(USB *p, const char* manufacturer,
- const char* model,
- const char* description,
- const char* version,
- const char* uri,
- const char* serial) :
-
- /* ADK ID Strings */
- manufacturer(manufacturer),
- model(model),
- description(description),
- version(version),
- uri(uri),
- serial(serial),
- pUsb(p), //pointer to USB class instance - mandatory
- bAddress(0), //device address - mandatory
- bConfNum(0), //configuration number
- bNumEP(1), //if config descriptor needs to be parsed
- ready(false) {
- // initialize endpoint data structures
- for(uint8_t i = 0; i < ADK_MAX_ENDPOINTS; i++) {
- epInfo[i].epAddr = 0;
- epInfo[i].maxPktSize = (i) ? 0 : 8;
- epInfo[i].epAttribs = 0;
- epInfo[i].bmNakPower = (i) ? USB_NAK_NOWAIT : USB_NAK_MAX_POWER;
- }//for(uint8_t i=0; i<ADK_MAX_ENDPOINTS; i++...
-
- // register in USB subsystem
- if(pUsb) {
- pUsb->RegisterDeviceClass(this); //set devConfig[] entry
- }
- }
-
- uint8_t ADK::ConfigureDevice(uint8_t parent, uint8_t port, bool lowspeed) {
- return Init(parent, port, lowspeed); // Just call Init. Yes, really!
- }
-
- /* Connection initialization of an Android phone */
- uint8_t ADK::Init(uint8_t parent, uint8_t port, bool lowspeed) {
- uint8_t buf[sizeof (USB_DEVICE_DESCRIPTOR)];
- USB_DEVICE_DESCRIPTOR * udd = reinterpret_cast<USB_DEVICE_DESCRIPTOR*>(buf);
- uint8_t rcode;
- uint8_t num_of_conf; // number of configurations
- UsbDevice *p = NULL;
- EpInfo *oldep_ptr = NULL;
-
- // get memory address of USB device address pool
- AddressPool &addrPool = pUsb->GetAddressPool();
-
- USBTRACE("\r\nADK Init");
-
- // check if address has already been assigned to an instance
- if(bAddress) {
- USBTRACE("\r\nAddress in use");
- return USB_ERROR_CLASS_INSTANCE_ALREADY_IN_USE;
- }
-
- // Get pointer to pseudo device with address 0 assigned
- p = addrPool.GetUsbDevicePtr(0);
-
- if(!p) {
- USBTRACE("\r\nAddress not found");
- return USB_ERROR_ADDRESS_NOT_FOUND_IN_POOL;
- }
-
- if(!p->epinfo) {
- USBTRACE("epinfo is null\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, sizeof (USB_DEVICE_DESCRIPTOR), (uint8_t*)buf);
-
- // Restore p->epinfo
- p->epinfo = oldep_ptr;
-
- if(rcode) {
- goto FailGetDevDescr;
- }
-
- // Allocate new address according to device class
- bAddress = addrPool.AllocAddress(parent, false, port);
-
- // Extract Max Packet Size from device descriptor
- epInfo[0].maxPktSize = udd->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;
- }//if (rcode...
-
- //USBTRACE2("\r\nAddr:", bAddress);
- // Spec says you should wait at least 200ms.
- //delay(300);
-
- p->lowspeed = false;
-
- //get pointer to assigned address record
- p = addrPool.GetUsbDevicePtr(bAddress);
- if(!p) {
- return USB_ERROR_ADDRESS_NOT_FOUND_IN_POOL;
- }
-
- p->lowspeed = lowspeed;
-
- // Assign epInfo to epinfo pointer - only EP0 is known
- rcode = pUsb->setEpInfoEntry(bAddress, 1, epInfo);
- if(rcode) {
- goto FailSetDevTblEntry;
- }
-
- //check if ADK device is already in accessory mode; if yes, configure and exit
- if(udd->idVendor == ADK_VID &&
- (udd->idProduct == ADK_PID || udd->idProduct == ADB_PID)) {
- USBTRACE("\r\nAcc.mode device detected");
- /* go through configurations, find first bulk-IN, bulk-OUT EP, fill epInfo and quit */
- num_of_conf = udd->bNumConfigurations;
-
- //USBTRACE2("\r\nNC:",num_of_conf);
- for(uint8_t i = 0; i < num_of_conf; i++) {
- ConfigDescParser < 0, 0, 0, 0 > confDescrParser(this);
- delay(1);
- rcode = pUsb->getConfDescr(bAddress, 0, i, &confDescrParser);
- #if defined(XOOM)
- //added by Jaylen Scott Vanorden
- if(rcode) {
- USBTRACE2("\r\nGot 1st bad code for config: ", rcode);
- // Try once more
- rcode = pUsb->getConfDescr(bAddress, 0, i, &confDescrParser);
- }
- #endif
- if(rcode) {
- goto FailGetConfDescr;
- }
- if(bNumEP > 2) {
- break;
- }
- } // for (uint8_t i=0; i<num_of_conf; i++...
-
- if(bNumEP == 3) {
- // Assign epInfo to epinfo pointer - this time all 3 endpoins
- rcode = pUsb->setEpInfoEntry(bAddress, 3, epInfo);
- if(rcode) {
- goto FailSetDevTblEntry;
- }
- }
-
- // Set Configuration Value
- rcode = pUsb->setConf(bAddress, 0, bConfNum);
- if(rcode) {
- goto FailSetConfDescr;
- }
- /* print endpoint structure */
- /*
- USBTRACE("\r\nEndpoint Structure:");
- USBTRACE("\r\nEP0:");
- USBTRACE2("\r\nAddr: ", epInfo[0].epAddr);
- USBTRACE2("\r\nMax.pkt.size: ", epInfo[0].maxPktSize);
- USBTRACE2("\r\nAttr: ", epInfo[0].epAttribs);
- USBTRACE("\r\nEpout:");
- USBTRACE2("\r\nAddr: ", epInfo[epDataOutIndex].epAddr);
- USBTRACE2("\r\nMax.pkt.size: ", epInfo[epDataOutIndex].maxPktSize);
- USBTRACE2("\r\nAttr: ", epInfo[epDataOutIndex].epAttribs);
- USBTRACE("\r\nEpin:");
- USBTRACE2("\r\nAddr: ", epInfo[epDataInIndex].epAddr);
- USBTRACE2("\r\nMax.pkt.size: ", epInfo[epDataInIndex].maxPktSize);
- USBTRACE2("\r\nAttr: ", epInfo[epDataInIndex].epAttribs);
- */
-
- USBTRACE("\r\nConfiguration successful");
- ready = true;
- return 0; //successful configuration
- }//if( buf->idVendor == ADK_VID...
-
- //probe device - get accessory protocol revision
- {
- uint16_t adkproto = -1;
- delay(1);
- rcode = getProto((uint8_t*) & adkproto);
- #if defined(XOOM)
- //added by Jaylen Scott Vanorden
- if(rcode) {
- USBTRACE2("\r\nGot 1st bad code for proto: ", rcode);
- // Try once more
- rcode = getProto((uint8_t*) & adkproto);
- }
- #endif
- if(rcode) {
- goto FailGetProto; //init fails
- }
- USBTRACE2("\r\nADK protocol rev. ", adkproto);
- }
-
- delay(100);
-
- //sending ID strings
- sendStr(ACCESSORY_STRING_MANUFACTURER, manufacturer);
- delay(10);
- sendStr(ACCESSORY_STRING_MODEL, model);
- delay(10);
- sendStr(ACCESSORY_STRING_DESCRIPTION, description);
- delay(10);
- sendStr(ACCESSORY_STRING_VERSION, version);
- delay(10);
- sendStr(ACCESSORY_STRING_URI, uri);
- delay(10);
- sendStr(ACCESSORY_STRING_SERIAL, serial);
-
- delay(100);
-
- //switch to accessory mode
- //the Android phone will reset
- rcode = switchAcc();
- if(rcode) {
- goto FailSwAcc; //init fails
- }
- rcode = USB_ERROR_CONFIG_REQUIRES_ADDITIONAL_RESET;
- delay(100); // Give Android a chance to do its reset. This is a guess, and possibly could be lower.
- goto SwAttempt; //switch to accessory mode attempted
-
- /* diagnostic messages */
- FailGetDevDescr:
- #ifdef DEBUG_USB_HOST
- NotifyFailGetDevDescr(rcode);
- goto Fail;
- #endif
-
- FailSetDevTblEntry:
- #ifdef DEBUG_USB_HOST
- NotifyFailSetDevTblEntry(rcode);
- goto Fail;
- #endif
-
- FailGetConfDescr:
- #ifdef DEBUG_USB_HOST
- NotifyFailGetConfDescr(rcode);
- goto Fail;
- #endif
-
- FailSetConfDescr:
- #ifdef DEBUG_USB_HOST
- NotifyFailSetConfDescr(rcode);
- goto Fail;
- #endif
-
- FailGetProto:
- #ifdef DEBUG_USB_HOST
- USBTRACE("\r\ngetProto:");
- goto Fail;
- #endif
-
- FailSwAcc:
- #ifdef DEBUG_USB_HOST
- USBTRACE("\r\nswAcc:");
- goto Fail;
- #endif
-
- //FailOnInit:
- // USBTRACE("OnInit:");
- // goto Fail;
- //
- SwAttempt:
- #ifdef DEBUG_USB_HOST
- USBTRACE("\r\nAccessory mode switch attempt");
- Fail:
- #endif
- //USBTRACE2("\r\nADK Init Failed, error code: ", rcode);
- //NotifyFail(rcode);
- Release();
- return rcode;
- }
-
- /* Extracts bulk-IN and bulk-OUT endpoint information from config descriptor */
- void ADK::EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *pep) {
- //ErrorMessage<uint8_t>(PSTR("Conf.Val"), conf);
- //ErrorMessage<uint8_t>(PSTR("Iface Num"), iface);
- //ErrorMessage<uint8_t>(PSTR("Alt.Set"), alt);
-
- //added by Yuuichi Akagawa
- if(bNumEP == 3) {
- return;
- }
-
- bConfNum = conf;
-
- if((pep->bmAttributes & 0x02) == 2) {
- uint8_t index = ((pep->bEndpointAddress & 0x80) == 0x80) ? epDataInIndex : epDataOutIndex;
- // Fill in the endpoint info structure
- epInfo[index].epAddr = (pep->bEndpointAddress & 0x0F);
- epInfo[index].maxPktSize = (uint8_t)pep->wMaxPacketSize;
-
- bNumEP++;
-
- //PrintEndpointDescriptor(pep);
- }
- }
-
- /* Performs a cleanup after failed Init() attempt */
- uint8_t ADK::Release() {
- pUsb->GetAddressPool().FreeAddress(bAddress);
-
- bNumEP = 1; //must have to be reset to 1
-
- bAddress = 0;
- ready = false;
- return 0;
- }
-
- uint8_t ADK::RcvData(uint16_t *bytes_rcvd, uint8_t *dataptr) {
- //USBTRACE2("\r\nAddr: ", bAddress );
- //USBTRACE2("\r\nEP: ",epInfo[epDataInIndex].epAddr);
- return pUsb->inTransfer(bAddress, epInfo[epDataInIndex].epAddr, bytes_rcvd, dataptr);
- }
-
- uint8_t ADK::SndData(uint16_t nbytes, uint8_t *dataptr) {
- return pUsb->outTransfer(bAddress, epInfo[epDataOutIndex].epAddr, nbytes, dataptr);
- }
-
- void ADK::PrintEndpointDescriptor(const USB_ENDPOINT_DESCRIPTOR* ep_ptr) {
- Notify(PSTR("Endpoint descriptor:"), 0x80);
- Notify(PSTR("\r\nLength:\t\t"), 0x80);
- D_PrintHex<uint8_t > (ep_ptr->bLength, 0x80);
- Notify(PSTR("\r\nType:\t\t"), 0x80);
- D_PrintHex<uint8_t > (ep_ptr->bDescriptorType, 0x80);
- Notify(PSTR("\r\nAddress:\t"), 0x80);
- D_PrintHex<uint8_t > (ep_ptr->bEndpointAddress, 0x80);
- Notify(PSTR("\r\nAttributes:\t"), 0x80);
- D_PrintHex<uint8_t > (ep_ptr->bmAttributes, 0x80);
- Notify(PSTR("\r\nMaxPktSize:\t"), 0x80);
- D_PrintHex<uint16_t > (ep_ptr->wMaxPacketSize, 0x80);
- Notify(PSTR("\r\nPoll Intrv:\t"), 0x80);
- D_PrintHex<uint8_t > (ep_ptr->bInterval, 0x80);
- Notify(PSTR("\r\n"), 0x80);
- }
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