mirror of
https://github.com/felis/USB_Host_Shield_2.0.git
synced 2024-03-22 11:31:26 +01:00
332 lines
7.9 KiB
C++
332 lines
7.9 KiB
C++
#include "cdcacm.h"
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const uint8_t ACM::epDataInIndex = 1;
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const uint8_t ACM::epDataOutIndex = 2;
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const uint8_t ACM::epInterruptInIndex = 3;
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ACM::ACM(USB *p, CDCAsyncOper *pasync) :
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pUsb(p),
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pAsync(pasync),
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bAddress(0),
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qNextPollTime(0),
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bPollEnable(false),
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bControlIface(0),
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bDataIface(0),
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bNumEP(1)
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{
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for(uint8_t i=0; i<ACM_MAX_ENDPOINTS; i++)
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{
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epInfo[i].epAddr = 0;
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epInfo[i].maxPktSize = (i) ? 0 : 8;
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epInfo[i].epAttribs = 0;
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if (!i)
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epInfo[i].bmNakPower = USB_NAK_MAX_POWER;
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}
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if (pUsb)
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pUsb->RegisterDeviceClass(this);
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}
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uint8_t ACM::Init(uint8_t parent, uint8_t port, bool lowspeed)
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{
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const uint8_t constBufSize = sizeof(USB_DEVICE_DESCRIPTOR);
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uint8_t buf[constBufSize];
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uint8_t rcode;
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UsbDevice *p = NULL;
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EpInfo *oldep_ptr = NULL;
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uint8_t num_of_conf; // number of configurations
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AddressPool &addrPool = pUsb->GetAddressPool();
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USBTRACE("ACM Init\r\n");
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if (bAddress)
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return USB_ERROR_CLASS_INSTANCE_ALREADY_IN_USE;
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// Get pointer to pseudo device with address 0 assigned
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p = addrPool.GetUsbDevicePtr(0);
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if (!p)
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return USB_ERROR_ADDRESS_NOT_FOUND_IN_POOL;
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if (!p->epinfo)
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{
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USBTRACE("epinfo\r\n");
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return USB_ERROR_EPINFO_IS_NULL;
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}
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// Save old pointer to EP_RECORD of address 0
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oldep_ptr = p->epinfo;
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// Temporary assign new pointer to epInfo to p->epinfo in order to avoid toggle inconsistence
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p->epinfo = epInfo;
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p->lowspeed = lowspeed;
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// Get device descriptor
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rcode = pUsb->getDevDescr( 0, 0, constBufSize, (uint8_t*)buf );
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// Restore p->epinfo
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p->epinfo = oldep_ptr;
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if( rcode )
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goto FailGetDevDescr;
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// Allocate new address according to device class
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bAddress = addrPool.AllocAddress(parent, false, port);
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if (!bAddress)
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return USB_ERROR_OUT_OF_ADDRESS_SPACE_IN_POOL;
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// Extract Max Packet Size from the device descriptor
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epInfo[0].maxPktSize = (uint8_t)((USB_DEVICE_DESCRIPTOR*)buf)->bMaxPacketSize0;
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// Assign new address to the device
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rcode = pUsb->setAddr( 0, 0, bAddress );
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if (rcode)
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{
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p->lowspeed = false;
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addrPool.FreeAddress(bAddress);
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bAddress = 0;
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USBTRACE2("setAddr:",rcode);
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return rcode;
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}
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USBTRACE2("Addr:", bAddress);
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p->lowspeed = false;
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p = addrPool.GetUsbDevicePtr(bAddress);
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if (!p)
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return USB_ERROR_ADDRESS_NOT_FOUND_IN_POOL;
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p->lowspeed = lowspeed;
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num_of_conf = ((USB_DEVICE_DESCRIPTOR*)buf)->bNumConfigurations;
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// Assign epInfo to epinfo pointer
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rcode = pUsb->setEpInfoEntry(bAddress, 1, epInfo);
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if (rcode)
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goto FailSetDevTblEntry;
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USBTRACE2("NC:", num_of_conf);
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for (uint8_t i=0; i<num_of_conf; i++)
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{
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ConfigDescParser< USB_CLASS_COM_AND_CDC_CTRL,
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CDC_SUBCLASS_ACM,
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CDC_PROTOCOL_ITU_T_V_250,
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CP_MASK_COMPARE_CLASS |
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CP_MASK_COMPARE_SUBCLASS |
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CP_MASK_COMPARE_PROTOCOL> CdcControlParser(this);
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ConfigDescParser<USB_CLASS_CDC_DATA, 0, 0,
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CP_MASK_COMPARE_CLASS> CdcDataParser(this);
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rcode = pUsb->getConfDescr(bAddress, 0, i, &CdcControlParser);
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rcode = pUsb->getConfDescr(bAddress, 0, i, &CdcDataParser);
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if (bNumEP > 1)
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break;
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} // for
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if (bNumEP < 4)
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return USB_DEV_CONFIG_ERROR_DEVICE_NOT_SUPPORTED;
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// Assign epInfo to epinfo pointer
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rcode = pUsb->setEpInfoEntry(bAddress, bNumEP, epInfo);
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USBTRACE2("Conf:", bConfNum);
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// Set Configuration Value
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rcode = pUsb->setConf(bAddress, 0, bConfNum);
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if (rcode)
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goto FailSetConf;
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rcode = pAsync->OnInit(this);
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if (rcode)
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goto FailOnInit;
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USBTRACE("ACM configured\r\n");
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//bPollEnable = true;
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//USBTRACE("Poll enabled\r\n");
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return 0;
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FailGetDevDescr:
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USBTRACE("getDevDescr:");
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goto Fail;
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FailSetDevTblEntry:
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USBTRACE("setDevTblEn:");
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goto Fail;
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FailGetConfDescr:
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USBTRACE("getConf:");
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goto Fail;
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FailSetConf:
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USBTRACE("setConf:");
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goto Fail;
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FailOnInit:
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USBTRACE("OnInit:");
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goto Fail;
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Fail:
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Serial.println(rcode, HEX);
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Release();
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return rcode;
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}
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void ACM::EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *pep)
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{
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ErrorMessage<uint8_t>(PSTR("Conf.Val"), conf);
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ErrorMessage<uint8_t>(PSTR("Iface Num"),iface);
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ErrorMessage<uint8_t>(PSTR("Alt.Set"), alt);
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bConfNum = conf;
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uint8_t index;
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if ((pep->bmAttributes & 0x03) == 3 && (pep->bEndpointAddress & 0x80) == 0x80)
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index = epInterruptInIndex;
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else
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if ((pep->bmAttributes & 0x02) == 2)
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index = ((pep->bEndpointAddress & 0x80) == 0x80) ? epDataInIndex : epDataOutIndex;
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else
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return;
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// Fill in the endpoint info structure
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epInfo[index].epAddr = (pep->bEndpointAddress & 0x0F);
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epInfo[index].maxPktSize = (uint8_t)pep->wMaxPacketSize;
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epInfo[index].epAttribs = 0;
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bNumEP ++;
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PrintEndpointDescriptor(pep);
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}
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uint8_t ACM::Release()
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{
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pUsb->GetAddressPool().FreeAddress(bAddress);
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bControlIface = 0;
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bDataIface = 0;
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bNumEP = 1;
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bAddress = 0;
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qNextPollTime = 0;
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bPollEnable = false;
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return 0;
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}
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uint8_t ACM::Poll()
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{
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uint8_t rcode = 0;
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if (!bPollEnable)
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return 0;
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uint32_t time_now = millis();
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if (qNextPollTime <= time_now)
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{
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qNextPollTime = time_now + 100;
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uint8_t rcode;
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const uint8_t constBufSize = 16;
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uint8_t buf[constBufSize];
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for (uint8_t i=0; i<constBufSize; i++)
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buf[i] = 0;
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uint16_t read = (constBufSize > epInfo[epInterruptInIndex].maxPktSize)
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? epInfo[epInterruptInIndex].maxPktSize : constBufSize;
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rcode = pUsb->inTransfer(bAddress, epInfo[epInterruptInIndex].epAddr, &read, buf);
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if (rcode)
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return rcode;
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for (uint8_t i=0; i<read; i++)
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{
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PrintHex<uint8_t>(buf[i]);
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Serial.print(" ");
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}
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USBTRACE("\r\n");
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}
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return rcode;
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}
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uint8_t ACM::RcvData(uint16_t *bytes_rcvd, uint8_t *dataptr)
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{
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return pUsb->inTransfer(bAddress, epInfo[epDataInIndex].epAddr, bytes_rcvd, dataptr);
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}
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uint8_t ACM::SndData(uint16_t nbytes, uint8_t *dataptr)
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{
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return pUsb->outTransfer(bAddress, epInfo[epDataOutIndex].epAddr, nbytes, dataptr);
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}
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uint8_t ACM::SetCommFeature(uint16_t fid, uint8_t nbytes, uint8_t *dataptr)
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{
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return( pUsb->ctrlReq( bAddress, 0, bmREQ_CDCOUT, CDC_SET_COMM_FEATURE, (fid & 0xff), (fid >> 8), bControlIface, nbytes, nbytes, dataptr, NULL ));
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}
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uint8_t ACM::GetCommFeature(uint16_t fid, uint8_t nbytes, uint8_t *dataptr)
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{
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return( pUsb->ctrlReq( bAddress, 0, bmREQ_CDCIN, CDC_GET_COMM_FEATURE, (fid & 0xff), (fid >> 8), bControlIface, nbytes, nbytes, dataptr, NULL ));
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}
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uint8_t ACM::ClearCommFeature(uint16_t fid)
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{
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return( pUsb->ctrlReq( bAddress, 0, bmREQ_CDCOUT, CDC_CLEAR_COMM_FEATURE, (fid & 0xff), (fid >> 8), bControlIface, 0, 0, NULL, NULL ));
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}
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uint8_t ACM::SetLineCoding(const LINE_CODING *dataptr)
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{
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return( pUsb->ctrlReq( bAddress, 0, bmREQ_CDCOUT, CDC_SET_LINE_CODING, 0x00, 0x00, bControlIface, sizeof(LINE_CODING), sizeof(LINE_CODING), (uint8_t*)dataptr, NULL ));
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}
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uint8_t ACM::GetLineCoding(LINE_CODING *dataptr)
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{
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return( pUsb->ctrlReq( bAddress, 0, bmREQ_CDCIN, CDC_GET_LINE_CODING, 0x00, 0x00, bControlIface, sizeof(LINE_CODING), sizeof(LINE_CODING), (uint8_t*)dataptr, NULL ));
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}
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uint8_t ACM::SetControlLineState(uint8_t state)
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{
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return( pUsb->ctrlReq( bAddress, 0, bmREQ_CDCOUT, CDC_SET_CONTROL_LINE_STATE, state, 0, bControlIface, 0, 0, NULL, NULL ));
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}
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uint8_t ACM::SendBreak(uint16_t duration)
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{
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return( pUsb->ctrlReq( bAddress, 0, bmREQ_CDCOUT, CDC_SEND_BREAK, (duration & 0xff), (duration >> 8), bControlIface, 0, 0, NULL, NULL ));
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}
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void ACM::PrintEndpointDescriptor( const USB_ENDPOINT_DESCRIPTOR* ep_ptr )
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{
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Notify(PSTR("Endpoint descriptor:"));
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Notify(PSTR("\r\nLength:\t\t"));
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PrintHex<uint8_t>(ep_ptr->bLength);
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Notify(PSTR("\r\nType:\t\t"));
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PrintHex<uint8_t>(ep_ptr->bDescriptorType);
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Notify(PSTR("\r\nAddress:\t"));
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PrintHex<uint8_t>(ep_ptr->bEndpointAddress);
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Notify(PSTR("\r\nAttributes:\t"));
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PrintHex<uint8_t>(ep_ptr->bmAttributes);
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Notify(PSTR("\r\nMaxPktSize:\t"));
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PrintHex<uint16_t>(ep_ptr->wMaxPacketSize);
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Notify(PSTR("\r\nPoll Intrv:\t"));
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PrintHex<uint8_t>(ep_ptr->bInterval);
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Notify(PSTR("\r\n"));
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}
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