USB host library, support isochronous,bulk,interrupt and control.
Dependents: BaseUsbHost_example BaseJpegDecode_example SimpleJpegDecode_example
Import programBaseUsbHost_example
BaseUsbHost example program
BaseUsbHostIsoEp.cpp@3:ae77d63a1eda, 2013-01-06 (annotated)
- Committer:
- va009039
- Date:
- Sun Jan 06 11:45:18 2013 +0000
- Revision:
- 3:ae77d63a1eda
- Parent:
- 2:fe1e62051d88
- Child:
- 4:d931d24c2f81
change interface usbhub class
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
va009039 | 3:ae77d63a1eda | 1 | // BaseUsbHostIsoEp.cpp 2012/12/31 |
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 | IsochronousEp::IsochronousEp(int addr, uint8_t ep, uint16_t size):BaseEp(addr, ep, size) |
va009039 | 0:b7d6879637a8 | 11 | { |
va009039 | 0:b7d6879637a8 | 12 | DBG("%p FA:%d EP:%02X MPS:%d\n", this, addr, ep, size); |
va009039 | 0:b7d6879637a8 | 13 | TEST_ASSERT(m_pED); |
va009039 | 0:b7d6879637a8 | 14 | |
va009039 | 0:b7d6879637a8 | 15 | m_pED->Control |= (1 << 15); // F Format ITD |
va009039 | 0:b7d6879637a8 | 16 | |
va009039 | 0:b7d6879637a8 | 17 | TEST_ASSERT(size >= 128 && size <= 1023); |
va009039 | 0:b7d6879637a8 | 18 | m_PacketSize = size; |
va009039 | 2:fe1e62051d88 | 19 | m_FrameCount = 4; // 1-8 |
va009039 | 2:fe1e62051d88 | 20 | TEST_ASSERT(m_FrameCount >= 1 && m_FrameCount <= 8); |
va009039 | 0:b7d6879637a8 | 21 | m_itd_queue_count = 0; |
va009039 | 0:b7d6879637a8 | 22 | reset(); |
va009039 | 0:b7d6879637a8 | 23 | HCITD* itd = new_HCITD(); |
va009039 | 0:b7d6879637a8 | 24 | m_pED->TailTd = reinterpret_cast<HCTD*>(itd); |
va009039 | 0:b7d6879637a8 | 25 | m_pED->HeadTd = reinterpret_cast<HCTD*>(itd); |
va009039 | 2:fe1e62051d88 | 26 | TEST_ASSERT(itd); |
va009039 | 2:fe1e62051d88 | 27 | if (itd == NULL) { |
va009039 | 2:fe1e62051d88 | 28 | return; |
va009039 | 2:fe1e62051d88 | 29 | } |
va009039 | 0:b7d6879637a8 | 30 | HCCA* hcca = reinterpret_cast<HCCA*>(LPC_USB->HcHCCA); |
va009039 | 0:b7d6879637a8 | 31 | TEST_ASSERT(hcca); |
va009039 | 2:fe1e62051d88 | 32 | if (hcca == NULL) { |
va009039 | 2:fe1e62051d88 | 33 | return; |
va009039 | 2:fe1e62051d88 | 34 | } |
va009039 | 0:b7d6879637a8 | 35 | for(int i = 0; i < 32; i++) { |
va009039 | 0:b7d6879637a8 | 36 | if (hcca->InterruptTable[i] == 0) { |
va009039 | 0:b7d6879637a8 | 37 | hcca->InterruptTable[i] = reinterpret_cast<uint32_t>(m_pED); |
va009039 | 0:b7d6879637a8 | 38 | } else { |
va009039 | 0:b7d6879637a8 | 39 | HCED* nextEd = reinterpret_cast<HCED*>(hcca->InterruptTable[i]); |
va009039 | 0:b7d6879637a8 | 40 | while(nextEd->Next && nextEd->Next != reinterpret_cast<uint32_t>(m_pED)) { |
va009039 | 0:b7d6879637a8 | 41 | nextEd = reinterpret_cast<HCED*>(nextEd->Next); |
va009039 | 0:b7d6879637a8 | 42 | } |
va009039 | 0:b7d6879637a8 | 43 | nextEd->Next = reinterpret_cast<uint32_t>(m_pED); |
va009039 | 0:b7d6879637a8 | 44 | } |
va009039 | 0:b7d6879637a8 | 45 | } |
va009039 | 0:b7d6879637a8 | 46 | DBG_ED(m_pED); |
va009039 | 0:b7d6879637a8 | 47 | } |
va009039 | 0:b7d6879637a8 | 48 | |
va009039 | 3:ae77d63a1eda | 49 | void IsochronousEp::reset(int delay_ms) |
va009039 | 0:b7d6879637a8 | 50 | { |
va009039 | 3:ae77d63a1eda | 51 | m_FrameNumber = LPC_USB->HcFmNumber + delay_ms; |
va009039 | 0:b7d6879637a8 | 52 | } |
va009039 | 0:b7d6879637a8 | 53 | |
va009039 | 0:b7d6879637a8 | 54 | HCITD* IsochronousEp::new_HCITD() |
va009039 | 0:b7d6879637a8 | 55 | { |
va009039 | 0:b7d6879637a8 | 56 | HCITD* itd; |
va009039 | 0:b7d6879637a8 | 57 | int r = posix_memalign(reinterpret_cast<void**>(&itd), 32, sizeof(HCITD)+m_PacketSize*m_FrameCount); |
va009039 | 0:b7d6879637a8 | 58 | if (r != 0) { |
va009039 | 0:b7d6879637a8 | 59 | return NULL; |
va009039 | 0:b7d6879637a8 | 60 | } |
va009039 | 0:b7d6879637a8 | 61 | int di = 0; //DelayInterrupt |
va009039 | 0:b7d6879637a8 | 62 | itd->Control = 0xe0000000 | // CC ConditionCode NOT ACCESSED |
va009039 | 0:b7d6879637a8 | 63 | ((m_FrameCount-1) << 24)| // FC FrameCount |
va009039 | 0:b7d6879637a8 | 64 | TD_DELAY_INT(di) | // DI DelayInterrupt |
va009039 | 0:b7d6879637a8 | 65 | m_FrameNumber; // SF StartingFrame |
va009039 | 0:b7d6879637a8 | 66 | itd->BufferPage0 = const_cast<uint8_t*>(itd->buf); |
va009039 | 0:b7d6879637a8 | 67 | itd->BufferEnd = const_cast<uint8_t*>(itd->buf) + m_PacketSize * m_FrameCount - 1; |
va009039 | 0:b7d6879637a8 | 68 | itd->Next = NULL; |
va009039 | 0:b7d6879637a8 | 69 | itd->ep = this; |
va009039 | 0:b7d6879637a8 | 70 | uint32_t addr = reinterpret_cast<uint32_t>(itd->buf); |
va009039 | 0:b7d6879637a8 | 71 | for(int i = 0; i < m_FrameCount; i++) { |
va009039 | 0:b7d6879637a8 | 72 | uint16_t offset = addr & 0x0fff; |
va009039 | 0:b7d6879637a8 | 73 | if ((addr&0xfffff000) == (reinterpret_cast<uint32_t>(itd->BufferEnd)&0xfffff000)) { |
va009039 | 0:b7d6879637a8 | 74 | offset |= 0x1000; |
va009039 | 0:b7d6879637a8 | 75 | } |
va009039 | 0:b7d6879637a8 | 76 | itd->OffsetPSW[i] = 0xe000|offset; |
va009039 | 0:b7d6879637a8 | 77 | addr += m_PacketSize; |
va009039 | 0:b7d6879637a8 | 78 | } |
va009039 | 0:b7d6879637a8 | 79 | m_FrameNumber += m_FrameCount; |
va009039 | 0:b7d6879637a8 | 80 | return itd; |
va009039 | 0:b7d6879637a8 | 81 | } |
va009039 | 0:b7d6879637a8 | 82 | |
va009039 | 2:fe1e62051d88 | 83 | HCITD* IsochronousEp::isochronousReveive(int millisec) |
va009039 | 0:b7d6879637a8 | 84 | { |
va009039 | 0:b7d6879637a8 | 85 | TEST_ASSERT(m_itd_queue_count >= 0); |
va009039 | 2:fe1e62051d88 | 86 | while(m_itd_queue_count < 3 && m_itd_queue_count < HCTD_QUEUE_SIZE) { |
va009039 | 0:b7d6879637a8 | 87 | HCITD* itd = reinterpret_cast<HCITD*>(m_pED->TailTd); |
va009039 | 0:b7d6879637a8 | 88 | TEST_ASSERT(itd); |
va009039 | 2:fe1e62051d88 | 89 | if (itd == NULL) { |
va009039 | 2:fe1e62051d88 | 90 | return NULL; |
va009039 | 2:fe1e62051d88 | 91 | } |
va009039 | 0:b7d6879637a8 | 92 | HCITD* blank_itd = new_HCITD(); |
va009039 | 0:b7d6879637a8 | 93 | TEST_ASSERT(blank_itd); |
va009039 | 2:fe1e62051d88 | 94 | if (blank_itd == NULL) { |
va009039 | 2:fe1e62051d88 | 95 | return NULL; |
va009039 | 2:fe1e62051d88 | 96 | } |
va009039 | 0:b7d6879637a8 | 97 | itd->Next = reinterpret_cast<uint32_t>(blank_itd); |
va009039 | 0:b7d6879637a8 | 98 | m_pED->TailTd = reinterpret_cast<HCTD*>(blank_itd); |
va009039 | 0:b7d6879637a8 | 99 | m_itd_queue_count++; |
va009039 | 0:b7d6879637a8 | 100 | //DBG_IED(m_pED); |
va009039 | 3:ae77d63a1eda | 101 | enable(); // Enable Periodic |
va009039 | 0:b7d6879637a8 | 102 | } |
va009039 | 0:b7d6879637a8 | 103 | |
va009039 | 2:fe1e62051d88 | 104 | HCITD* itd = get_queue_HCITD(millisec); |
va009039 | 0:b7d6879637a8 | 105 | if (itd) { |
va009039 | 0:b7d6879637a8 | 106 | m_itd_queue_count--; |
va009039 | 0:b7d6879637a8 | 107 | } |
va009039 | 0:b7d6879637a8 | 108 | return itd; |
va009039 | 0:b7d6879637a8 | 109 | } |
va009039 | 0:b7d6879637a8 | 110 | |
va009039 | 2:fe1e62051d88 | 111 | HCITD* IsochronousEp::get_queue_HCITD(int millisec) |
va009039 | 0:b7d6879637a8 | 112 | { |
va009039 | 0:b7d6879637a8 | 113 | for(int i = 0; i < 16; i++) { |
va009039 | 0:b7d6879637a8 | 114 | osEvent evt = m_queue.get(millisec); |
va009039 | 0:b7d6879637a8 | 115 | if (evt.status == osEventMessage) { |
va009039 | 0:b7d6879637a8 | 116 | HCITD* itd = reinterpret_cast<HCITD*>(evt.value.p); |
va009039 | 0:b7d6879637a8 | 117 | TEST_ASSERT(itd); |
va009039 | 2:fe1e62051d88 | 118 | if (itd == NULL) { |
va009039 | 2:fe1e62051d88 | 119 | return NULL; |
va009039 | 2:fe1e62051d88 | 120 | } |
va009039 | 0:b7d6879637a8 | 121 | uint8_t cc = itd->Control>>28; |
va009039 | 0:b7d6879637a8 | 122 | if (cc != 0) { |
va009039 | 0:b7d6879637a8 | 123 | m_ConditionCode = cc; |
va009039 | 0:b7d6879637a8 | 124 | } |
va009039 | 0:b7d6879637a8 | 125 | return itd; |
va009039 | 0:b7d6879637a8 | 126 | } else if (evt.status == osOK) { |
va009039 | 0:b7d6879637a8 | 127 | continue; |
va009039 | 0:b7d6879637a8 | 128 | } else if (evt.status == osEventTimeout) { |
va009039 | 0:b7d6879637a8 | 129 | return NULL; |
va009039 | 0:b7d6879637a8 | 130 | } else { |
va009039 | 0:b7d6879637a8 | 131 | DBG("evt.status: %02x\n", evt.status); |
va009039 | 0:b7d6879637a8 | 132 | TEST_ASSERT(evt.status == osEventMessage); |
va009039 | 2:fe1e62051d88 | 133 | return NULL; |
va009039 | 0:b7d6879637a8 | 134 | } |
va009039 | 0:b7d6879637a8 | 135 | } |
va009039 | 0:b7d6879637a8 | 136 | return NULL; |
va009039 | 0:b7d6879637a8 | 137 | } |
va009039 | 3:ae77d63a1eda | 138 | |
va009039 | 3:ae77d63a1eda | 139 | void IsochronousEp::enable() |
va009039 | 3:ae77d63a1eda | 140 | { |
va009039 | 3:ae77d63a1eda | 141 | LPC_USB->HcControl |= OR_CONTROL_PLE; |
va009039 | 3:ae77d63a1eda | 142 | } |