USB host library, support isochronous,bulk,interrupt and control.
Dependents: BaseUsbHost_example BaseJpegDecode_example SimpleJpegDecode_example
Import programBaseUsbHost_example
BaseUsbHost example program
BaseUsbHostIsoEp.cpp@4:d931d24c2f81, 2013-01-25 (annotated)
- Committer:
- va009039
- Date:
- Fri Jan 25 14:51:33 2013 +0000
- Revision:
- 4:d931d24c2f81
- Parent:
- 3:ae77d63a1eda
add UsbHub::search()
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
va009039 | 4:d931d24c2f81 | 1 | // BaseUsbHostIsoEp.cpp 2013/1/25 |
va009039 | 0:b7d6879637a8 | 2 | #include "mbed.h" |
va009039 | 0:b7d6879637a8 | 3 | #include "rtos.h" |
va009039 | 0:b7d6879637a8 | 4 | #include "BaseUsbHost.h" |
va009039 | 4:d931d24c2f81 | 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 | 4:d931d24c2f81 | 10 | HCITD::HCITD(BaseEp* obj, uint16_t FrameNumber, int FrameCount, uint16_t PacketSize) { |
va009039 | 4:d931d24c2f81 | 11 | Control = 0xe0000000 | // CC ConditionCode NOT ACCESSED |
va009039 | 4:d931d24c2f81 | 12 | ((FrameCount-1) << 24)| // FC FrameCount |
va009039 | 4:d931d24c2f81 | 13 | TD_DELAY_INT(0) | // DI DelayInterrupt |
va009039 | 4:d931d24c2f81 | 14 | FrameNumber; // SF StartingFrame |
va009039 | 4:d931d24c2f81 | 15 | BufferPage0 = const_cast<uint8_t*>(buf); |
va009039 | 4:d931d24c2f81 | 16 | BufferEnd = const_cast<uint8_t*>(buf) + PacketSize * FrameCount - 1; |
va009039 | 4:d931d24c2f81 | 17 | Next = NULL; |
va009039 | 4:d931d24c2f81 | 18 | ep = obj; |
va009039 | 4:d931d24c2f81 | 19 | uint32_t addr = reinterpret_cast<uint32_t>(buf); |
va009039 | 4:d931d24c2f81 | 20 | for(int i = 0; i < FrameCount; i++) { |
va009039 | 4:d931d24c2f81 | 21 | uint16_t offset = addr & 0x0fff; |
va009039 | 4:d931d24c2f81 | 22 | if ((addr&0xfffff000) == (reinterpret_cast<uint32_t>(BufferEnd)&0xfffff000)) { |
va009039 | 4:d931d24c2f81 | 23 | offset |= 0x1000; |
va009039 | 4:d931d24c2f81 | 24 | } |
va009039 | 4:d931d24c2f81 | 25 | OffsetPSW[i] = 0xe000|offset; |
va009039 | 4:d931d24c2f81 | 26 | addr += PacketSize; |
va009039 | 4:d931d24c2f81 | 27 | } |
va009039 | 4:d931d24c2f81 | 28 | } |
va009039 | 4:d931d24c2f81 | 29 | |
va009039 | 0:b7d6879637a8 | 30 | IsochronousEp::IsochronousEp(int addr, uint8_t ep, uint16_t size):BaseEp(addr, ep, size) |
va009039 | 0:b7d6879637a8 | 31 | { |
va009039 | 0:b7d6879637a8 | 32 | DBG("%p FA:%d EP:%02X MPS:%d\n", this, addr, ep, size); |
va009039 | 0:b7d6879637a8 | 33 | TEST_ASSERT(m_pED); |
va009039 | 0:b7d6879637a8 | 34 | |
va009039 | 0:b7d6879637a8 | 35 | m_pED->Control |= (1 << 15); // F Format ITD |
va009039 | 0:b7d6879637a8 | 36 | |
va009039 | 0:b7d6879637a8 | 37 | TEST_ASSERT(size >= 128 && size <= 1023); |
va009039 | 0:b7d6879637a8 | 38 | m_PacketSize = size; |
va009039 | 2:fe1e62051d88 | 39 | m_FrameCount = 4; // 1-8 |
va009039 | 2:fe1e62051d88 | 40 | TEST_ASSERT(m_FrameCount >= 1 && m_FrameCount <= 8); |
va009039 | 0:b7d6879637a8 | 41 | m_itd_queue_count = 0; |
va009039 | 0:b7d6879637a8 | 42 | reset(); |
va009039 | 4:d931d24c2f81 | 43 | HCITD* itd = new_HCITD(this); |
va009039 | 0:b7d6879637a8 | 44 | m_pED->TailTd = reinterpret_cast<HCTD*>(itd); |
va009039 | 0:b7d6879637a8 | 45 | m_pED->HeadTd = reinterpret_cast<HCTD*>(itd); |
va009039 | 2:fe1e62051d88 | 46 | TEST_ASSERT(itd); |
va009039 | 2:fe1e62051d88 | 47 | if (itd == NULL) { |
va009039 | 2:fe1e62051d88 | 48 | return; |
va009039 | 2:fe1e62051d88 | 49 | } |
va009039 | 0:b7d6879637a8 | 50 | HCCA* hcca = reinterpret_cast<HCCA*>(LPC_USB->HcHCCA); |
va009039 | 0:b7d6879637a8 | 51 | TEST_ASSERT(hcca); |
va009039 | 2:fe1e62051d88 | 52 | if (hcca == NULL) { |
va009039 | 2:fe1e62051d88 | 53 | return; |
va009039 | 2:fe1e62051d88 | 54 | } |
va009039 | 0:b7d6879637a8 | 55 | for(int i = 0; i < 32; i++) { |
va009039 | 4:d931d24c2f81 | 56 | if (hcca->InterruptTable[i] == NULL) { |
va009039 | 4:d931d24c2f81 | 57 | hcca->InterruptTable[i] = m_pED; |
va009039 | 0:b7d6879637a8 | 58 | } else { |
va009039 | 4:d931d24c2f81 | 59 | HCED* nextEd = hcca->InterruptTable[i]; |
va009039 | 4:d931d24c2f81 | 60 | while(nextEd->Next && nextEd->Next != m_pED) { |
va009039 | 4:d931d24c2f81 | 61 | nextEd = nextEd->Next; |
va009039 | 0:b7d6879637a8 | 62 | } |
va009039 | 4:d931d24c2f81 | 63 | nextEd->Next = m_pED; |
va009039 | 0:b7d6879637a8 | 64 | } |
va009039 | 0:b7d6879637a8 | 65 | } |
va009039 | 0:b7d6879637a8 | 66 | DBG_ED(m_pED); |
va009039 | 0:b7d6879637a8 | 67 | } |
va009039 | 0:b7d6879637a8 | 68 | |
va009039 | 3:ae77d63a1eda | 69 | void IsochronousEp::reset(int delay_ms) |
va009039 | 0:b7d6879637a8 | 70 | { |
va009039 | 3:ae77d63a1eda | 71 | m_FrameNumber = LPC_USB->HcFmNumber + delay_ms; |
va009039 | 0:b7d6879637a8 | 72 | } |
va009039 | 0:b7d6879637a8 | 73 | |
va009039 | 4:d931d24c2f81 | 74 | HCITD* IsochronousEp::new_HCITD(BaseEp* obj) |
va009039 | 0:b7d6879637a8 | 75 | { |
va009039 | 4:d931d24c2f81 | 76 | HCITD* itd = new(m_PacketSize*m_FrameCount)HCITD(obj, m_FrameNumber, m_FrameCount, m_PacketSize); |
va009039 | 4:d931d24c2f81 | 77 | if (itd == NULL) { |
va009039 | 0:b7d6879637a8 | 78 | return NULL; |
va009039 | 0:b7d6879637a8 | 79 | } |
va009039 | 0:b7d6879637a8 | 80 | m_FrameNumber += m_FrameCount; |
va009039 | 0:b7d6879637a8 | 81 | return itd; |
va009039 | 0:b7d6879637a8 | 82 | } |
va009039 | 0:b7d6879637a8 | 83 | |
va009039 | 2:fe1e62051d88 | 84 | HCITD* IsochronousEp::isochronousReveive(int millisec) |
va009039 | 0:b7d6879637a8 | 85 | { |
va009039 | 0:b7d6879637a8 | 86 | TEST_ASSERT(m_itd_queue_count >= 0); |
va009039 | 2:fe1e62051d88 | 87 | while(m_itd_queue_count < 3 && m_itd_queue_count < HCTD_QUEUE_SIZE) { |
va009039 | 0:b7d6879637a8 | 88 | HCITD* itd = reinterpret_cast<HCITD*>(m_pED->TailTd); |
va009039 | 0:b7d6879637a8 | 89 | TEST_ASSERT(itd); |
va009039 | 2:fe1e62051d88 | 90 | if (itd == NULL) { |
va009039 | 2:fe1e62051d88 | 91 | return NULL; |
va009039 | 2:fe1e62051d88 | 92 | } |
va009039 | 4:d931d24c2f81 | 93 | HCITD* blank_itd = new_HCITD(this); |
va009039 | 0:b7d6879637a8 | 94 | TEST_ASSERT(blank_itd); |
va009039 | 2:fe1e62051d88 | 95 | if (blank_itd == NULL) { |
va009039 | 2:fe1e62051d88 | 96 | return NULL; |
va009039 | 2:fe1e62051d88 | 97 | } |
va009039 | 4:d931d24c2f81 | 98 | itd->Next = blank_itd; |
va009039 | 0:b7d6879637a8 | 99 | m_pED->TailTd = reinterpret_cast<HCTD*>(blank_itd); |
va009039 | 0:b7d6879637a8 | 100 | m_itd_queue_count++; |
va009039 | 0:b7d6879637a8 | 101 | //DBG_IED(m_pED); |
va009039 | 3:ae77d63a1eda | 102 | enable(); // Enable Periodic |
va009039 | 0:b7d6879637a8 | 103 | } |
va009039 | 0:b7d6879637a8 | 104 | |
va009039 | 2:fe1e62051d88 | 105 | HCITD* itd = get_queue_HCITD(millisec); |
va009039 | 0:b7d6879637a8 | 106 | if (itd) { |
va009039 | 0:b7d6879637a8 | 107 | m_itd_queue_count--; |
va009039 | 0:b7d6879637a8 | 108 | } |
va009039 | 0:b7d6879637a8 | 109 | return itd; |
va009039 | 0:b7d6879637a8 | 110 | } |
va009039 | 0:b7d6879637a8 | 111 | |
va009039 | 2:fe1e62051d88 | 112 | HCITD* IsochronousEp::get_queue_HCITD(int millisec) |
va009039 | 0:b7d6879637a8 | 113 | { |
va009039 | 0:b7d6879637a8 | 114 | for(int i = 0; i < 16; i++) { |
va009039 | 0:b7d6879637a8 | 115 | osEvent evt = m_queue.get(millisec); |
va009039 | 0:b7d6879637a8 | 116 | if (evt.status == osEventMessage) { |
va009039 | 0:b7d6879637a8 | 117 | HCITD* itd = reinterpret_cast<HCITD*>(evt.value.p); |
va009039 | 0:b7d6879637a8 | 118 | TEST_ASSERT(itd); |
va009039 | 0:b7d6879637a8 | 119 | return itd; |
va009039 | 0:b7d6879637a8 | 120 | } else if (evt.status == osOK) { |
va009039 | 0:b7d6879637a8 | 121 | continue; |
va009039 | 0:b7d6879637a8 | 122 | } else if (evt.status == osEventTimeout) { |
va009039 | 0:b7d6879637a8 | 123 | return NULL; |
va009039 | 0:b7d6879637a8 | 124 | } else { |
va009039 | 0:b7d6879637a8 | 125 | DBG("evt.status: %02x\n", evt.status); |
va009039 | 0:b7d6879637a8 | 126 | TEST_ASSERT(evt.status == osEventMessage); |
va009039 | 2:fe1e62051d88 | 127 | return NULL; |
va009039 | 0:b7d6879637a8 | 128 | } |
va009039 | 0:b7d6879637a8 | 129 | } |
va009039 | 0:b7d6879637a8 | 130 | return NULL; |
va009039 | 0:b7d6879637a8 | 131 | } |
va009039 | 3:ae77d63a1eda | 132 | |
va009039 | 3:ae77d63a1eda | 133 | void IsochronousEp::enable() |
va009039 | 3:ae77d63a1eda | 134 | { |
va009039 | 3:ae77d63a1eda | 135 | LPC_USB->HcControl |= OR_CONTROL_PLE; |
va009039 | 3:ae77d63a1eda | 136 | } |