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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
*/
#include "cdcprolific.h"
PL2303::PL2303(USB *p, CDCAsyncOper *pasync) :
ACM(p, pasync),
wPLType(0) {
}
uint8_t PL2303::Init(uint8_t parent, uint8_t port, bool lowspeed) {
const uint8_t constBufSize = sizeof (USB_DEVICE_DESCRIPTOR);
uint8_t buf[constBufSize];
USB_DEVICE_DESCRIPTOR * udd = reinterpret_cast<USB_DEVICE_DESCRIPTOR*>(buf);
uint8_t rcode;
UsbDevice *p = NULL;
EpInfo *oldep_ptr = NULL;
uint8_t num_of_conf; // number of configurations
#ifdef PL2303_COMPAT
enum pl2303_type pltype = unknown;
#endif
AddressPool &addrPool = pUsb->GetAddressPool();
USBTRACE("PL Init\r\n");
if(bAddress)
return USB_ERROR_CLASS_INSTANCE_ALREADY_IN_USE;
// 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, sizeof (USB_DEVICE_DESCRIPTOR), (uint8_t*)buf);
// Restore p->epinfo
p->epinfo = oldep_ptr;
if(rcode)
goto FailGetDevDescr;
if(udd->idVendor != PL_VID && CHECK_PID(udd->idProduct))
return USB_DEV_CONFIG_ERROR_DEVICE_NOT_SUPPORTED;
/* determine chip variant */
#ifdef PL2303_COMPAT
if(udd->bDeviceClass == 0x02 )
pltype = type_0;
else if(udd->bMaxPacketSize0 == 0x40 )
pltype = rev_HX;
else if(udd->bDeviceClass == 0x00)
pltype = type_1;
else if(udd->bDeviceClass == 0xff)
pltype = type_1;
#endif
// Save type of PL chip
wPLType = udd->bcdDevice;
// 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 = 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;
}
USBTRACE2("Addr:", bAddress);
p->lowspeed = false;
p = addrPool.GetUsbDevicePtr(bAddress);
if(!p)
return USB_ERROR_ADDRESS_NOT_FOUND_IN_POOL;
p->lowspeed = lowspeed;
num_of_conf = udd->bNumConfigurations;
// Assign epInfo to epinfo pointer
rcode = pUsb->setEpInfoEntry(bAddress, 1, epInfo);
if(rcode)
goto FailSetDevTblEntry;
USBTRACE2("NC:", num_of_conf);
for(uint8_t i = 0; i < num_of_conf; i++) {
HexDumper<USBReadParser, uint16_t, uint16_t> HexDump;
ConfigDescParser < 0xFF, 0, 0, CP_MASK_COMPARE_CLASS> confDescrParser(this);
rcode = pUsb->getConfDescr(bAddress, 0, i, &HexDump);
if(rcode)
goto FailGetConfDescr;
rcode = pUsb->getConfDescr(bAddress, 0, i, &confDescrParser);
if(rcode)
goto FailGetConfDescr;
if(bNumEP > 1)
break;
} // for
if(bNumEP < 2)
return USB_DEV_CONFIG_ERROR_DEVICE_NOT_SUPPORTED;
// Assign epInfo to epinfo pointer
rcode = pUsb->setEpInfoEntry(bAddress, bNumEP, epInfo);
USBTRACE2("Conf:", bConfNum);
// Set Configuration Value
rcode = pUsb->setConf(bAddress, 0, bConfNum);
if(rcode)
goto FailSetConfDescr;
#ifdef PL2303_COMPAT
/* Shamanic dance - sending Prolific init data as-is */
vendorRead( 0x84, 0x84, 0, buf );
vendorWrite( 0x04, 0x04, 0 );
vendorRead( 0x84, 0x84, 0, buf );
vendorRead( 0x83, 0x83, 0, buf );
vendorRead( 0x84, 0x84, 0, buf );
vendorWrite( 0x04, 0x04, 1 );
vendorRead( 0x84, 0x84, 0, buf);
vendorRead( 0x83, 0x83, 0, buf);
vendorWrite( 0, 0, 1 );
vendorWrite( 1, 0, 0 );
if( pltype == rev_HX ) {
vendorWrite( 2, 0, 0x44 );
vendorWrite( 0x06, 0x06, 0 ); // From W7 init
}
else {
vendorWrite( 2, 0, 0x24 );
}
/* Shamanic dance end */
#endif
/* Calling post-init callback */
rcode = pAsync->OnInit(this);
if(rcode)
goto FailOnInit;
USBTRACE("PL configured\r\n");
//bPollEnable = true;
ready = 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
FailOnInit:
#ifdef DEBUG_USB_HOST
USBTRACE("OnInit:");
#endif
#ifdef DEBUG_USB_HOST
Fail:
NotifyFail(rcode);
#endif
Release();
return rcode;
}
//uint8_t PL::Poll()
//{
// uint8_t rcode = 0;
//
// //if (!bPollEnable)
// // return 0;
//
// //if (qNextPollTime <= millis())
// //{
// // USB_HOST_SERIAL.println(bAddress, HEX);
//
// // qNextPollTime = millis() + 100;
// //}
// return rcode;
//}
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