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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];
uint8_t rcode;
UsbDevice *p = NULL;
EpInfo *oldep_ptr = NULL;
uint8_t num_of_conf; // number of configurations
enum pl2303_type pltype = unknown;
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 (((USB_DEVICE_DESCRIPTOR*)buf)->idVendor != PL_VID && ((USB_DEVICE_DESCRIPTOR*)buf)->idProduct != PL_PID ) {
return USB_DEV_CONFIG_ERROR_DEVICE_NOT_SUPPORTED;
}
/* determine chip variant */
if (((USB_DEVICE_DESCRIPTOR*)buf)->bDeviceClass == 0x02 ) {
pltype = type_0;
}
else if (((USB_DEVICE_DESCRIPTOR*)buf)->bMaxPacketSize0 == 0x40 ) {
pltype = rev_HX;
}
else if (((USB_DEVICE_DESCRIPTOR*)buf)->bDeviceClass == 0x00) {
pltype = type_1;
}
else if (((USB_DEVICE_DESCRIPTOR*)buf)->bDeviceClass == 0xff) {
pltype = type_1;
}
// 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;
}
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 = ((USB_DEVICE_DESCRIPTOR*)buf)->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);
rcode = pUsb->getConfDescr(bAddress, 0, i, &confDescrParser);
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;
#if defined(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:
USBTRACE("getDevDescr:");
goto Fail;
FailSetDevTblEntry:
USBTRACE("setDevTblEn:");
goto Fail;
FailGetConfDescr:
USBTRACE("getConf:");
goto Fail;
FailSetConfDescr:
USBTRACE("setConf:");
goto Fail;
FailSetControlLineState:
USBTRACE("SetControlLineState:");
goto Fail;
FailSetLineCoding:
USBTRACE("SetLineCoding:");
goto Fail;
FailOnInit:
USBTRACE("OnInit:");
goto Fail;
Fail:
Serial.println(rcode, HEX);
Release();
return rcode;
}
//uint8_t PL::Poll()
//{
// uint8_t rcode = 0;
//
// //if (!bPollEnable)
// // return 0;
//
// //if (qNextPollTime <= millis())
// //{
// // Serial.println(bAddress, HEX);
//
// // qNextPollTime = millis() + 100;
// //}
// return rcode;
//}
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