mirror of
https://github.com/felis/USB_Host_Shield_2.0.git
synced 2024-03-22 11:31:26 +01:00
339 lines
9.7 KiB
C++
339 lines
9.7 KiB
C++
/* 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) :
|
|
|
|
pUsb(p), //pointer to USB class instance - mandatory
|
|
bAddress(0), //device address - mandatory
|
|
bNumEP(1), //if config descriptor needs to be parsed
|
|
ready(false),
|
|
|
|
/* ADK ID Strings */
|
|
|
|
manufacturer(manufacturer),
|
|
model(model),
|
|
description(description),
|
|
version(version),
|
|
uri(uri),
|
|
serial(serial)
|
|
|
|
{
|
|
// 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 = ( 0xfc & ( USB_NAK_MAX_POWER<<2 ));
|
|
}//for(uint8_t i=0; i<ADK_MAX_ENDPOINTS; i++...
|
|
|
|
//set bulk-IN EP naklimit to 1
|
|
epInfo[epDataInIndex].epAttribs = ( 0xfc & ( USB_NAK_NOWAIT<<2 ));
|
|
|
|
// register in USB subsystem
|
|
if (pUsb) {
|
|
pUsb->RegisterDeviceClass(this); //set devConfig[] entry
|
|
}
|
|
}
|
|
|
|
/* 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)];
|
|
uint8_t rcode;
|
|
UsbDevice *p = NULL;
|
|
EpInfo *oldep_ptr = NULL;
|
|
uint8_t num_of_conf; // number of configurations
|
|
|
|
// 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 = (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;
|
|
}//if (rcode...
|
|
|
|
//USBTRACE2("\r\nAddr:", bAddress);
|
|
|
|
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(((USB_DEVICE_DESCRIPTOR*)buf)->idVendor == ADK_VID &&
|
|
(((USB_DEVICE_DESCRIPTOR*)buf)->idProduct == ADK_PID || ((USB_DEVICE_DESCRIPTOR*)buf)->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 = ((USB_DEVICE_DESCRIPTOR*)buf)->bNumConfigurations;
|
|
|
|
//USBTRACE2("\r\nNC:",num_of_conf);
|
|
|
|
for (uint8_t i=0; i<num_of_conf; i++) {
|
|
ConfigDescParser<0, 0, 0, 0> confDescrParser(this);
|
|
rcode = pUsb->getConfDescr(bAddress, 0, i, &confDescrParser);
|
|
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 FailSetConf;
|
|
}
|
|
/* 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;
|
|
rcode = getProto((uint8_t*)&adkproto );
|
|
if( rcode ){
|
|
goto FailGetProto; //init fails
|
|
}
|
|
USBTRACE2("\r\nADK protocol rev. ", adkproto );
|
|
}
|
|
|
|
//sending ID strings
|
|
sendStr( ACCESSORY_STRING_MANUFACTURER, manufacturer);
|
|
sendStr( ACCESSORY_STRING_MODEL, model);
|
|
sendStr( ACCESSORY_STRING_DESCRIPTION, description);
|
|
sendStr( ACCESSORY_STRING_VERSION, version);
|
|
sendStr( ACCESSORY_STRING_URI, uri);
|
|
sendStr( ACCESSORY_STRING_SERIAL, serial);
|
|
|
|
//switch to accessory mode
|
|
//the Android phone will reset
|
|
rcode = switchAcc();
|
|
if( rcode ) {
|
|
goto FailSwAcc; //init fails
|
|
}
|
|
rcode = -1;
|
|
goto SwAttempt; //switch to accessory mode attempted
|
|
|
|
/* diagnostic messages */
|
|
FailGetDevDescr:
|
|
USBTRACE("\r\ngetDevDescr:");
|
|
goto Fail;
|
|
|
|
FailSetDevTblEntry:
|
|
USBTRACE("\r\nsetDevTblEn:");
|
|
goto Fail;
|
|
|
|
FailGetProto:
|
|
USBTRACE("\r\ngetProto:");
|
|
goto Fail;
|
|
|
|
FailSwAcc:
|
|
USBTRACE("\r\nswAcc:");
|
|
goto Fail;
|
|
|
|
SwAttempt:
|
|
USBTRACE("\r\nAccessory mode switch attempt");
|
|
goto Fail;
|
|
|
|
//FailSetDevTblEntry:
|
|
// USBTRACE("setDevTblEn:");
|
|
// goto Fail;
|
|
//
|
|
FailGetConfDescr:
|
|
// USBTRACE("getConf:");
|
|
goto Fail;
|
|
//
|
|
FailSetConf:
|
|
// USBTRACE("setConf:");
|
|
goto Fail;
|
|
//
|
|
//FailOnInit:
|
|
// USBTRACE("OnInit:");
|
|
// goto Fail;
|
|
//
|
|
Fail:
|
|
//USBTRACE2("\r\nADK Init Failed, error code: ", 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);
|
|
|
|
bConfNum = conf;
|
|
|
|
uint8_t index;
|
|
|
|
if ((pep->bmAttributes & 0x02) == 2) {
|
|
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:"));
|
|
Notify(PSTR("\r\nLength:\t\t"));
|
|
PrintHex<uint8_t>(ep_ptr->bLength);
|
|
Notify(PSTR("\r\nType:\t\t"));
|
|
PrintHex<uint8_t>(ep_ptr->bDescriptorType);
|
|
Notify(PSTR("\r\nAddress:\t"));
|
|
PrintHex<uint8_t>(ep_ptr->bEndpointAddress);
|
|
Notify(PSTR("\r\nAttributes:\t"));
|
|
PrintHex<uint8_t>(ep_ptr->bmAttributes);
|
|
Notify(PSTR("\r\nMaxPktSize:\t"));
|
|
PrintHex<uint16_t>(ep_ptr->wMaxPacketSize);
|
|
Notify(PSTR("\r\nPoll Intrv:\t"));
|
|
PrintHex<uint8_t>(ep_ptr->bInterval);
|
|
Notify(PSTR("\r\n"));
|
|
}
|