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USB_Host_Shield_2.0/cdcacm.cpp
Andrew J. Kroll e18eb57752 fix all warnings for ARM, fix a few small bugs
2013-12-04 18:40:23 -05:00

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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 "cdcacm.h"
const uint8_t ACM::epDataInIndex = 1;
const uint8_t ACM::epDataOutIndex = 2;
const uint8_t ACM::epInterruptInIndex = 3;
ACM::ACM(USB *p, CDCAsyncOper *pasync) :
pUsb(p),
pAsync(pasync),
bAddress(0),
bControlIface(0),
bDataIface(0),
bNumEP(1),
qNextPollTime(0),
bPollEnable(false),
ready(false) {
for (uint8_t i = 0; i < ACM_MAX_ENDPOINTS; i++) {
epInfo[i].epAddr = 0;
epInfo[i].maxPktSize = (i) ? 0 : 8;
epInfo[i].epAttribs = 0;
//epInfo[i].bmNakPower = USB_NAK_NOWAIT;
epInfo[i].bmNakPower = USB_NAK_MAX_POWER;
//if (!i)
epInfo[i].bmNakPower = USB_NAK_MAX_POWER;
}
if (pUsb)
pUsb->RegisterDeviceClass(this);
}
uint8_t ACM::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
AddressPool &addrPool = pUsb->GetAddressPool();
USBTRACE("ACM 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, constBufSize, (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);
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++) {
ConfigDescParser< USB_CLASS_COM_AND_CDC_CTRL,
CDC_SUBCLASS_ACM,
CDC_PROTOCOL_ITU_T_V_250,
CP_MASK_COMPARE_CLASS |
CP_MASK_COMPARE_SUBCLASS |
CP_MASK_COMPARE_PROTOCOL > CdcControlParser(this);
ConfigDescParser<USB_CLASS_CDC_DATA, 0, 0,
CP_MASK_COMPARE_CLASS> CdcDataParser(this);
rcode = pUsb->getConfDescr(bAddress, 0, i, &CdcControlParser);
if (rcode)
goto FailGetConfDescr;
rcode = pUsb->getConfDescr(bAddress, 0, i, &CdcDataParser);
if (rcode)
goto FailGetConfDescr;
if (bNumEP > 1)
break;
} // for
if (bNumEP < 4)
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;
rcode = pAsync->OnInit(this);
if (rcode)
goto FailOnInit;
USBTRACE("ACM configured\r\n");
ready = true;
//bPollEnable = true;
//USBTRACE("Poll enabled\r\n");
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;
}
void ACM::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 & 0x03) == 3 && (pep->bEndpointAddress & 0x80) == 0x80)
index = epInterruptInIndex;
else
if ((pep->bmAttributes & 0x02) == 2)
index = ((pep->bEndpointAddress & 0x80) == 0x80) ? epDataInIndex : epDataOutIndex;
else
return;
// Fill in the endpoint info structure
epInfo[index].epAddr = (pep->bEndpointAddress & 0x0F);
epInfo[index].maxPktSize = (uint8_t)pep->wMaxPacketSize;
epInfo[index].epAttribs = 0;
bNumEP++;
PrintEndpointDescriptor(pep);
}
uint8_t ACM::Release() {
pUsb->GetAddressPool().FreeAddress(bAddress);
bControlIface = 0;
bDataIface = 0;
bNumEP = 1;
bAddress = 0;
qNextPollTime = 0;
bPollEnable = false;
return 0;
}
uint8_t ACM::Poll() {
uint8_t rcode = 0;
if (!bPollEnable)
return 0;
//uint32_t time_now = millis();
//if (qNextPollTime <= time_now)
//{
// qNextPollTime = time_now + 100;
// uint8_t rcode;
// const uint8_t constBufSize = 16;
// uint8_t buf[constBufSize];
// for (uint8_t i=0; i<constBufSize; i++)
// buf[i] = 0;
// uint16_t read = (constBufSize > epInfo[epInterruptInIndex].maxPktSize)
// ? epInfo[epInterruptInIndex].maxPktSize : constBufSize;
// rcode = pUsb->inTransfer(bAddress, epInfo[epInterruptInIndex].epAddr, &read, buf);
// if (rcode)
// return rcode;
// for (uint8_t i=0; i<read; i++)
// {
// PrintHex<uint8_t>(buf[i]);
// USB_HOST_SERIAL.print(" ");
// }
// USBTRACE("\r\n");
//}
return rcode;
}
uint8_t ACM::RcvData(uint16_t *bytes_rcvd, uint8_t *dataptr) {
return pUsb->inTransfer(bAddress, epInfo[epDataInIndex].epAddr, bytes_rcvd, dataptr);
}
uint8_t ACM::SndData(uint16_t nbytes, uint8_t *dataptr) {
return pUsb->outTransfer(bAddress, epInfo[epDataOutIndex].epAddr, nbytes, dataptr);
}
uint8_t ACM::SetCommFeature(uint16_t fid, uint8_t nbytes, uint8_t *dataptr) {
return ( pUsb->ctrlReq(bAddress, 0, bmREQ_CDCOUT, CDC_SET_COMM_FEATURE, (fid & 0xff), (fid >> 8), bControlIface, nbytes, nbytes, dataptr, NULL));
}
uint8_t ACM::GetCommFeature(uint16_t fid, uint8_t nbytes, uint8_t *dataptr) {
return ( pUsb->ctrlReq(bAddress, 0, bmREQ_CDCIN, CDC_GET_COMM_FEATURE, (fid & 0xff), (fid >> 8), bControlIface, nbytes, nbytes, dataptr, NULL));
}
uint8_t ACM::ClearCommFeature(uint16_t fid) {
return ( pUsb->ctrlReq(bAddress, 0, bmREQ_CDCOUT, CDC_CLEAR_COMM_FEATURE, (fid & 0xff), (fid >> 8), bControlIface, 0, 0, NULL, NULL));
}
uint8_t ACM::SetLineCoding(const LINE_CODING *dataptr) {
return ( pUsb->ctrlReq(bAddress, 0, bmREQ_CDCOUT, CDC_SET_LINE_CODING, 0x00, 0x00, bControlIface, sizeof (LINE_CODING), sizeof (LINE_CODING), (uint8_t*)dataptr, NULL));
}
uint8_t ACM::GetLineCoding(LINE_CODING *dataptr) {
return ( pUsb->ctrlReq(bAddress, 0, bmREQ_CDCIN, CDC_GET_LINE_CODING, 0x00, 0x00, bControlIface, sizeof (LINE_CODING), sizeof (LINE_CODING), (uint8_t*)dataptr, NULL));
}
uint8_t ACM::SetControlLineState(uint8_t state) {
return ( pUsb->ctrlReq(bAddress, 0, bmREQ_CDCOUT, CDC_SET_CONTROL_LINE_STATE, state, 0, bControlIface, 0, 0, NULL, NULL));
}
uint8_t ACM::SendBreak(uint16_t duration) {
return ( pUsb->ctrlReq(bAddress, 0, bmREQ_CDCOUT, CDC_SEND_BREAK, (duration & 0xff), (duration >> 8), bControlIface, 0, 0, NULL, NULL));
}
void ACM::PrintEndpointDescriptor(const USB_ENDPOINT_DESCRIPTOR* ep_ptr) {
Notify(PSTR("Endpoint descriptor:"), 0x80);
Notify(PSTR("\r\nLength:\t\t"), 0x80);
PrintHex<uint8_t > (ep_ptr->bLength, 0x80);
Notify(PSTR("\r\nType:\t\t"), 0x80);
PrintHex<uint8_t > (ep_ptr->bDescriptorType, 0x80);
Notify(PSTR("\r\nAddress:\t"), 0x80);
PrintHex<uint8_t > (ep_ptr->bEndpointAddress, 0x80);
Notify(PSTR("\r\nAttributes:\t"), 0x80);
PrintHex<uint8_t > (ep_ptr->bmAttributes, 0x80);
Notify(PSTR("\r\nMaxPktSize:\t"), 0x80);
PrintHex<uint16_t > (ep_ptr->wMaxPacketSize, 0x80);
Notify(PSTR("\r\nPoll Intrv:\t"), 0x80);
PrintHex<uint8_t > (ep_ptr->bInterval, 0x80);
Notify(PSTR("\r\n"), 0x80);
}
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