![](/media/cache/profiles/45ab12afa05e563bb484781693dffc87.50x50_q85.jpg)
modify for C210 webcam and Startboard Orange.
Dependencies: TextLCD USBHost mbed
Fork of USBHostC270_example by
Norimasa Okamoto さんの http://mbed.org/users/va009039/code/USBHostC270_example/ を C210 webcam と StarBoard Orange での SD カード保存用に変更。
USBHostC270/BaseUvc.cpp
- Committer:
- va009039
- Date:
- 2013-03-16
- Revision:
- 9:fecabade834a
- Child:
- 10:387c49b2fc7e
File content as of revision 9:fecabade834a:
#include "USBHostConf.h" #include "USBHost.h" #include "USBHostC270.h" #include "BaseUvc.h" #define TEST_ASSERT(A) while(!(A)){fprintf(stderr,"\n\n%s@%d %s ASSERT!\n\n",__PRETTY_FUNCTION__,__LINE__,#A);exit(1);}; void BaseUvc::poll(int millisec) { HCITD* itd = m_isoEp->isochronousReveive(millisec); if (itd) { uint8_t cc = itd->ConditionCode(); report_cc_count[cc]++; if (cc == 0) { uint16_t frame = itd->StartingFrame(); int fc = itd->FrameCount(); uint8_t* buf = const_cast<uint8_t*>(itd->buf); int mps = m_isoEp->m_PacketSize; for(int i = 0; i < fc; i++) { uint16_t psw = itd->OffsetPSW[i]; cc = psw>>12; if (cc == 0 || cc == 9) { int len = psw & 0x7ff; onResult(frame, buf, len); } report_ps_cc_count[cc]++; buf += mps; frame++; } } delete itd; } } void BaseUvc::onResult(uint16_t frame, uint8_t* buf, int len) { if(m_pCbItem && m_pCbMeth) (m_pCbItem->*m_pCbMeth)(frame, buf, len); else if(m_pCb) m_pCb(frame, buf, len); } void BaseUvc::setOnResult( void (*pMethod)(uint16_t, uint8_t*, int) ) { m_pCb = pMethod; m_pCbItem = NULL; m_pCbMeth = NULL; } void BaseUvc::clearOnResult() { m_pCb = NULL; m_pCbItem = NULL; m_pCbMeth = NULL; } HCITD::HCITD(BaseEp* obj, uint16_t FrameNumber, int FrameCount, uint16_t PacketSize) { Control = 0xe0000000 | // CC ConditionCode NOT ACCESSED ((FrameCount-1) << 24)| // FC FrameCount TD_DELAY_INT(0) | // DI DelayInterrupt FrameNumber; // SF StartingFrame BufferPage0 = const_cast<uint8_t*>(buf); BufferEnd = const_cast<uint8_t*>(buf) + PacketSize * FrameCount - 1; Next = NULL; ep = obj; uint32_t addr = reinterpret_cast<uint32_t>(buf); for(int i = 0; i < FrameCount; i++) { uint16_t offset = addr & 0x0fff; if ((addr&0xfffff000) == (reinterpret_cast<uint32_t>(BufferEnd)&0xfffff000)) { offset |= 0x1000; } OffsetPSW[i] = 0xe000|offset; addr += PacketSize; } } IsochronousEp::IsochronousEp(int addr, uint8_t ep, uint16_t size):BaseEp(addr, ep, size) { C270_DBG("%p FA:%d EP:%02X MPS:%d\n", this, addr, ep, size); TEST_ASSERT(m_pED); m_pED->Control |= (1 << 15); // F Format ITD TEST_ASSERT(size >= 128 && size <= 1023); m_PacketSize = size; m_FrameCount = 4; // 1-8 TEST_ASSERT(m_FrameCount >= 1 && m_FrameCount <= 8); m_itd_queue_count = 0; reset(); HCITD* itd = new_HCITD(this); m_pED->TailTd = reinterpret_cast<HCTD*>(itd); m_pED->HeadTd = reinterpret_cast<HCTD*>(itd); TEST_ASSERT(itd); if (itd == NULL) { return; } _HCCA* hcca = reinterpret_cast<_HCCA*>(LPC_USB->HcHCCA); TEST_ASSERT(hcca); if (hcca == NULL) { return; } for(int i = 0; i < 32; i++) { if (hcca->InterruptTable[i] == NULL) { hcca->InterruptTable[i] = m_pED; } else { _HCED* nextEd = hcca->InterruptTable[i]; while(nextEd->Next && nextEd->Next != m_pED) { nextEd = nextEd->Next; } nextEd->Next = m_pED; } } //DBG_ED(m_pED); } void IsochronousEp::reset(int delay_ms) { m_FrameNumber = LPC_USB->HcFmNumber + delay_ms; } HCITD* IsochronousEp::new_HCITD(BaseEp* obj) { HCITD* itd = new(m_PacketSize*m_FrameCount)HCITD(obj, m_FrameNumber, m_FrameCount, m_PacketSize); if (itd == NULL) { return NULL; } m_FrameNumber += m_FrameCount; return itd; } HCITD* IsochronousEp::isochronousReveive(int millisec) { TEST_ASSERT(m_itd_queue_count >= 0); while(m_itd_queue_count < 3 && m_itd_queue_count < HCTD_QUEUE_SIZE) { HCITD* itd = reinterpret_cast<HCITD*>(m_pED->TailTd); TEST_ASSERT(itd); if (itd == NULL) { return NULL; } HCITD* blank_itd = new_HCITD(this); TEST_ASSERT(blank_itd); if (blank_itd == NULL) { return NULL; } itd->Next = blank_itd; m_pED->TailTd = reinterpret_cast<HCTD*>(blank_itd); m_itd_queue_count++; //DBG_IED(m_pED); enable(); // Enable Periodic } HCITD* itd = get_queue_HCITD(millisec); if (itd) { m_itd_queue_count--; } return itd; } HCITD* IsochronousEp::get_queue_HCITD(int millisec) { for(int i = 0; i < 16; i++) { osEvent evt = m_queue.get(millisec); if (evt.status == osEventMessage) { HCITD* itd = reinterpret_cast<HCITD*>(evt.value.p); TEST_ASSERT(itd); return itd; } else if (evt.status == osOK) { continue; } else if (evt.status == osEventTimeout) { return NULL; } else { //DBG("evt.status: %02x\n", evt.status); TEST_ASSERT(evt.status == osEventMessage); return NULL; } } return NULL; } void IsochronousEp::enable() { LPC_USB->HcControl |= OR_CONTROL_PLE; } BaseEp::BaseEp(int addr, uint8_t ep, uint16_t size, int lowSpeed):m_td_queue_count(0) { C270_DBG("%p FA=%d EN=%02x MPS=%d S=%d\n", this, addr, ep, size, lowSpeed); TEST_ASSERT(size >= 8 && size <= 1023); TEST_ASSERT(lowSpeed == 0 || lowSpeed == 1); m_pED = new _HCED(addr, ep, size, lowSpeed); TEST_ASSERT(m_pED); }