diff options
Diffstat (limited to 'lib/usbhost/USB_Host_Shield_2.0/adk.cpp')
| -rw-r--r-- | lib/usbhost/USB_Host_Shield_2.0/adk.cpp | 371 |
1 files changed, 371 insertions, 0 deletions
diff --git a/lib/usbhost/USB_Host_Shield_2.0/adk.cpp b/lib/usbhost/USB_Host_Shield_2.0/adk.cpp new file mode 100644 index 0000000000..9e4e0c8d86 --- /dev/null +++ b/lib/usbhost/USB_Host_Shield_2.0/adk.cpp @@ -0,0 +1,371 @@ +/* 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 + */ + +/* 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); +} |