USB host library, support isochronous,bulk,interrupt and control.
Dependents: BaseUsbHost_example BaseJpegDecode_example SimpleJpegDecode_example
Import programBaseUsbHost_example
BaseUsbHost example program
BaseUsbHostIntEp.cpp@1:3b7bc4f87a61, 2012-12-05 (annotated)
- Committer:
- va009039
- Date:
- Wed Dec 05 13:23:06 2012 +0000
- Revision:
- 1:3b7bc4f87a61
- Parent:
- 0:b7d6879637a8
- Child:
- 2:fe1e62051d88
add uvc class
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
va009039 | 1:3b7bc4f87a61 | 1 | // BaseUsbHostIntEp.cpp 2012/12/5 |
va009039 | 0:b7d6879637a8 | 2 | #include "mbed.h" |
va009039 | 0:b7d6879637a8 | 3 | #include "rtos.h" |
va009039 | 0:b7d6879637a8 | 4 | #include "BaseUsbHost.h" |
va009039 | 0:b7d6879637a8 | 5 | #define DEBUG |
va009039 | 0:b7d6879637a8 | 6 | #include "BaseUsbHostDebug.h" |
va009039 | 0:b7d6879637a8 | 7 | #define TEST |
va009039 | 0:b7d6879637a8 | 8 | #include "BaseUsbHostTest.h" |
va009039 | 0:b7d6879637a8 | 9 | |
va009039 | 0:b7d6879637a8 | 10 | InterruptEp::InterruptEp(int addr, uint8_t ep, uint16_t size, int lowSpeed) |
va009039 | 0:b7d6879637a8 | 11 | :BaseEp(addr, ep, size, lowSpeed) |
va009039 | 0:b7d6879637a8 | 12 | { |
va009039 | 0:b7d6879637a8 | 13 | HCTD* td = new_HCTD(); |
va009039 | 0:b7d6879637a8 | 14 | TEST_ASSERT(td); |
va009039 | 0:b7d6879637a8 | 15 | m_pED->TailTd = td; |
va009039 | 0:b7d6879637a8 | 16 | m_pED->HeadTd = td; |
va009039 | 0:b7d6879637a8 | 17 | |
va009039 | 0:b7d6879637a8 | 18 | HCCA* pHcca = reinterpret_cast<HCCA*>(LPC_USB->HcHCCA); |
va009039 | 0:b7d6879637a8 | 19 | TEST_ASSERT(pHcca); |
va009039 | 0:b7d6879637a8 | 20 | int n = 0; |
va009039 | 0:b7d6879637a8 | 21 | m_pED->Next = pHcca->InterruptTable[n]; |
va009039 | 0:b7d6879637a8 | 22 | pHcca->InterruptTable[n] = reinterpret_cast<uint32_t>(m_pED); |
va009039 | 0:b7d6879637a8 | 23 | LPC_USB->HcControl |= OR_CONTROL_PLE; |
va009039 | 0:b7d6879637a8 | 24 | } |
va009039 | 0:b7d6879637a8 | 25 | |
va009039 | 1:3b7bc4f87a61 | 26 | int InterruptEp::interruptReceive(uint8_t* buf, int len, int millisec) |
va009039 | 0:b7d6879637a8 | 27 | { |
va009039 | 0:b7d6879637a8 | 28 | if (m_td_queue_count == 0) { |
va009039 | 0:b7d6879637a8 | 29 | HCTD* data_td = m_pED->TailTd; |
va009039 | 0:b7d6879637a8 | 30 | TEST_ASSERT(data_td); |
va009039 | 0:b7d6879637a8 | 31 | data_td->Control |= TD_IN; |
va009039 | 0:b7d6879637a8 | 32 | data_td->CurrBufPtr = buf; |
va009039 | 0:b7d6879637a8 | 33 | data_td->BufEnd = const_cast<uint8_t*>(buf)+len-1; |
va009039 | 0:b7d6879637a8 | 34 | HCTD* blank_td = new_HCTD(); |
va009039 | 0:b7d6879637a8 | 35 | TEST_ASSERT(blank_td); |
va009039 | 0:b7d6879637a8 | 36 | data_td->Next = reinterpret_cast<uint32_t>(blank_td); |
va009039 | 0:b7d6879637a8 | 37 | m_pED->TailTd = blank_td; |
va009039 | 0:b7d6879637a8 | 38 | m_td_queue_count++; |
va009039 | 0:b7d6879637a8 | 39 | DBG_ED(m_pED); |
va009039 | 0:b7d6879637a8 | 40 | LPC_USB->HcControl |= OR_CONTROL_PLE; // Enable Periodic |
va009039 | 0:b7d6879637a8 | 41 | } |
va009039 | 0:b7d6879637a8 | 42 | |
va009039 | 0:b7d6879637a8 | 43 | HCTD* td = get_queue_HCTD(millisec); |
va009039 | 0:b7d6879637a8 | 44 | if (td) { |
va009039 | 0:b7d6879637a8 | 45 | DBG_TD(td); |
va009039 | 0:b7d6879637a8 | 46 | int ret = len; |
va009039 | 0:b7d6879637a8 | 47 | if (td->CurrBufPtr) { |
va009039 | 0:b7d6879637a8 | 48 | ret = td->CurrBufPtr - buf; |
va009039 | 0:b7d6879637a8 | 49 | } |
va009039 | 0:b7d6879637a8 | 50 | delete_HCTD(td); |
va009039 | 0:b7d6879637a8 | 51 | m_td_queue_count--; |
va009039 | 0:b7d6879637a8 | 52 | return ret; |
va009039 | 0:b7d6879637a8 | 53 | } |
va009039 | 0:b7d6879637a8 | 54 | return USB_TIMEOUT; |
va009039 | 0:b7d6879637a8 | 55 | } |