diff options
Diffstat (limited to 'lib/usbhost/USB_Host_Shield_2.0/cdcacm.cpp')
| -rw-r--r-- | lib/usbhost/USB_Host_Shield_2.0/cdcacm.cpp | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/lib/usbhost/USB_Host_Shield_2.0/cdcacm.cpp b/lib/usbhost/USB_Host_Shield_2.0/cdcacm.cpp new file mode 100644 index 0000000000..2cd2c9a82d --- /dev/null +++ b/lib/usbhost/USB_Host_Shield_2.0/cdcacm.cpp @@ -0,0 +1,331 @@ +/* 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) { + _enhanced_status = enhanced_features(); // Set up features + 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 = (i == epDataInIndex) ? USB_NAK_NOWAIT : 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; + + // Set up features status + _enhanced_status = enhanced_features(); + half_duplex(false); + autoflowRTS(false); + autoflowDSR(false); + autoflowXON(false); + wide(false); // Always false, because this is only available in custom mode. + 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() { + ready = false; + 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; + + 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); + 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); +} |