Norimasa Okamoto / Mbed 2 deprecated LPC4088-USBHostC270_example

Simple USBHost WebCam for EA LPC4088 QSB/LPC1768 test program

Dependencies:   LPC4088-USBHost mbed

EA LPC4088 QSB/LPC1768をUSBホストにしてWebカメラからJPEG画像を読み取るテストプログラムです。

The usage is the same as KL46Z-USBHostC270_example.
使い方はKL46Z-USBHostC270_exampleと同じです。
動作確認： Logitech C270,Logitech Q200R(Qcam Orbit AF)
/media/uploads/va009039/lpc4088-c270-480x360.jpg

LPC4088-USBHostC270/USBIsochronous.cpp@1:1bb68ef9aa77, 2014-04-25 (annotated)

Committer:
va009039
Date:
Fri Apr 25 05:55:06 2014 +0000
Revision:
1:1bb68ef9aa77
Parent:
0:c972ee42b455 
update LPC4088-USBHost library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
va009039 0:c972ee42b455 1 // USBIsochronous.cpp
va009039 0:c972ee42b455 2 #include "USBHostConf.h"
va009039 0:c972ee42b455 3 #include "USBHost.h"
va009039 0:c972ee42b455 4 #include "USBIsochronous.h"
va009039 0:c972ee42b455 5
va009039 0:c972ee42b455 6 //#define ISO_DEBUG 1
va009039 0:c972ee42b455 7 #ifdef ISO_DEBUG
va009039 0:c972ee42b455 8 #define ISO_DBG(x, ...) std::printf("[%s:%d]"x"\r\n", __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
va009039 0:c972ee42b455 9 #else
va009039 0:c972ee42b455 10 #define ISO_DBG(...) while(0);
va009039 0:c972ee42b455 11 #endif
va009039 0:c972ee42b455 12
va009039 0:c972ee42b455 13 #if 0
va009039 0:c972ee42b455 14 #define TEST_ASSERT(A) while(!(A)){fprintf(stderr,"\n\n%s@%d %s ASSERT!\n\n",__PRETTY_FUNCTION__,__LINE__,#A);exit(1);};
va009039 0:c972ee42b455 15 #else
va009039 0:c972ee42b455 16 #define TEST_ASSERT(A) while(0)
va009039 0:c972ee42b455 17 #endif
va009039 0:c972ee42b455 18
va009039 0:c972ee42b455 19 IsochronousEp::IsochronousEp(USBDeviceConnected* dev):USBEndpoint(dev) {
va009039 0:c972ee42b455 20 }
va009039 0:c972ee42b455 21
va009039 0:c972ee42b455 22 void IsochronousEp::init2(uint8_t frameCount, uint8_t queueLimit) {
va009039 0:c972ee42b455 23 m_pED = new HCED(this);
va009039 0:c972ee42b455 24 m_pED->setFormat(); // F Format ITD
va009039 0:c972ee42b455 25 TEST_ASSERT(frameCount >= 1 && frameCount <= 8);
va009039 0:c972ee42b455 26 m_FrameCount = frameCount;
va009039 0:c972ee42b455 27 TEST_ASSERT(queueLimit >= 1 && queueLimit <= HCTD_QUEUE_SIZE);
va009039 0:c972ee42b455 28 m_itd_queue_limit = queueLimit;
va009039 0:c972ee42b455 29
va009039 0:c972ee42b455 30 m_itd_queue_count = 0;
va009039 0:c972ee42b455 31 reset();
va009039 0:c972ee42b455 32 HCITD* itd = new_HCITD(this);
va009039 0:c972ee42b455 33 m_pED->init_queue(reinterpret_cast<HCTD*>(itd));
va009039 0:c972ee42b455 34 HCCA* hcca = reinterpret_cast<HCCA*>(LPC_USB->HcHCCA);
va009039 0:c972ee42b455 35 hcca->enqueue(m_pED);
va009039 0:c972ee42b455 36 }
va009039 0:c972ee42b455 37
va009039 0:c972ee42b455 38 void IsochronousEp::reset(int delay_ms) {
va009039 0:c972ee42b455 39 m_FrameNumber = LPC_USB->HcFmNumber + delay_ms;
va009039 0:c972ee42b455 40 }
va009039 0:c972ee42b455 41
va009039 0:c972ee42b455 42 HCITD* IsochronousEp::new_HCITD(IsochronousEp* obj) {
va009039 0:c972ee42b455 43 HCITD* itd = new(getSize() * m_FrameCount)HCITD(obj, m_FrameNumber, m_FrameCount, getSize());
va009039 0:c972ee42b455 44 m_FrameNumber += m_FrameCount;
va009039 0:c972ee42b455 45 return itd;
va009039 0:c972ee42b455 46 }
va009039 0:c972ee42b455 47
va009039 0:c972ee42b455 48 HCITD* IsochronousEp::isochronousReceive(int timeout_ms) {
va009039 0:c972ee42b455 49 while(m_itd_queue_count < m_itd_queue_limit) {
va009039 0:c972ee42b455 50 HCITD* blank_itd = new_HCITD(this);
va009039 0:c972ee42b455 51 if (m_pED->enqueue(reinterpret_cast<HCTD*>(blank_itd))) {
va009039 0:c972ee42b455 52 m_itd_queue_count++;
va009039 0:c972ee42b455 53 }
va009039 0:c972ee42b455 54 enable(); // Enable Periodic
va009039 0:c972ee42b455 55 }
va009039 0:c972ee42b455 56
va009039 0:c972ee42b455 57 HCITD* itd = get_queue_HCITD(timeout_ms);
va009039 0:c972ee42b455 58 if (itd) {
va009039 0:c972ee42b455 59 m_itd_queue_count--;
va009039 0:c972ee42b455 60 }
va009039 0:c972ee42b455 61 return itd;
va009039 0:c972ee42b455 62 }
va009039 0:c972ee42b455 63
va009039 0:c972ee42b455 64 #if 0
va009039 0:c972ee42b455 65 int IsochronousEp::isochronousSend(uint8_t* buf, int len, int timeout_ms)
va009039 0:c972ee42b455 66 {
va009039 0:c972ee42b455 67 //ISO_DBG("buf: %p, len: %d", buf, len);
va009039 0:c972ee42b455 68 HCITD* itd = get_queue_HCITD(timeout_ms);
va009039 0:c972ee42b455 69 if (itd) {
va009039 0:c972ee42b455 70 delete itd;
va009039 0:c972ee42b455 71 m_itd_queue_count--;
va009039 0:c972ee42b455 72 TEST_ASSERT(m_itd_queue_count >= 0);
va009039 0:c972ee42b455 73 }
va009039 0:c972ee42b455 74 TEST_ASSERT(m_itd_queue_count >= 0);
va009039 0:c972ee42b455 75 if(m_itd_queue_count < m_itd_queue_limit) {
va009039 0:c972ee42b455 76 if (m_pED == NULL) {
va009039 0:c972ee42b455 77 ISO_DBG("m_pED is NULL");
va009039 0:c972ee42b455 78 return 0;
va009039 0:c972ee42b455 79 }
va009039 0:c972ee42b455 80 if (m_pED->Skip()) {
va009039 0:c972ee42b455 81 return 0;
va009039 0:c972ee42b455 82 }
va009039 0:c972ee42b455 83 itd = new_HCITD(this);
va009039 0:c972ee42b455 84 TEST_ASSERT(itd);
va009039 0:c972ee42b455 85 //ISO_DBG("m_pED: %p itd: %p", m_pED, itd);
va009039 0:c972ee42b455 86 memcpy(const_cast<uint8_t*>(itd->buf), buf, len);
va009039 0:c972ee42b455 87 if (m_pED->enqueue<HCITD>(itd)) {
va009039 0:c972ee42b455 88 m_itd_queue_count++;
va009039 0:c972ee42b455 89 }
va009039 0:c972ee42b455 90 enable(); // Enable Periodic
va009039 0:c972ee42b455 91 //ISO_DBG("m_itd_queue_count: %d", m_itd_queue_count);
va009039 0:c972ee42b455 92 return len;
va009039 0:c972ee42b455 93 }
va009039 0:c972ee42b455 94 return 0;
va009039 0:c972ee42b455 95 }
va009039 0:c972ee42b455 96 #endif
va009039 0:c972ee42b455 97
va009039 0:c972ee42b455 98 HCITD* IsochronousEp::get_queue_HCITD(int timeout_ms)
va009039 0:c972ee42b455 99 {
va009039 0:c972ee42b455 100 Timer t;
va009039 0:c972ee42b455 101 t.reset();
va009039 0:c972ee42b455 102 t.start();
va009039 0:c972ee42b455 103 do {
va009039 0:c972ee42b455 104 osEvent evt = m_queue.get(0);
va009039 0:c972ee42b455 105 if (evt.status == osEventMessage) {
va009039 0:c972ee42b455 106 HCITD* itd = reinterpret_cast<HCITD*>(evt.value.p);
va009039 0:c972ee42b455 107 TEST_ASSERT(itd);
va009039 0:c972ee42b455 108 return itd;
va009039 0:c972ee42b455 109 } else if (evt.status == osOK) {
va009039 0:c972ee42b455 110 ;
va009039 0:c972ee42b455 111 } else if (evt.status == osEventTimeout) {
va009039 0:c972ee42b455 112 break;
va009039 0:c972ee42b455 113 } else {
va009039 0:c972ee42b455 114 ISO_DBG("evt.status: %02x\n", evt.status);
va009039 0:c972ee42b455 115 TEST_ASSERT(evt.status == osEventMessage);
va009039 0:c972ee42b455 116 break;
va009039 0:c972ee42b455 117 }
va009039 0:c972ee42b455 118 } while(t.read_ms() < timeout_ms);
va009039 0:c972ee42b455 119 return NULL;
va009039 0:c972ee42b455 120 }
va009039 0:c972ee42b455 121
va009039 0:c972ee42b455 122 void IsochronousEp::enable()
va009039 0:c972ee42b455 123 {
va009039 0:c972ee42b455 124 LPC_USB->HcControl |= OR_CONTROL_PLE;
va009039 0:c972ee42b455 125 }
va009039 0:c972ee42b455 126
va009039 0:c972ee42b455 127