USBHostC270.cpp

00001 #include "USBHostC270.h"
00002 #include "dbg.h"
00003 
00004 //#define C270_DEBUG 1
00005 #ifdef C270_DEBUG
00006 #define C270_DBG(x, ...) std::printf("[%s:%d]"x"\r\n", __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
00007 #else
00008 #define C270_DBG(...)  while(0);
00009 #endif
00010 
00011 // ------------------ HcControl Register ---------------------
00012 #define  OR_CONTROL_IE                  0x00000008
00013 
00014 USBHostC270::USBHostC270(int formatIndex, int frameIndex, uint32_t interval)
00015 {
00016     C270_DBG("formatIndex: %d, frameIndex: %d, interval: %d", formatIndex, frameIndex, interval);
00017     _formatIndex = formatIndex;
00018     _frameIndex = frameIndex;
00019     _interval = interval;
00020     clearOnResult();
00021     host = USBHost::getHostInst();
00022     m_isoEp = new IsochronousEp;
00023     init();
00024 }
00025 
00026 void USBHostC270::init()
00027 {
00028     C270_DBG("");
00029     dev_connected = false;
00030     dev = NULL;
00031     c270_intf = -1;
00032     c270_device_found = false;
00033     c270_vid_pid_found = false;
00034 }
00035 
00036 bool USBHostC270::connected()
00037 {
00038     return dev_connected;
00039 }
00040 
00041 bool USBHostC270::connect()
00042 {
00043     if (dev_connected) {
00044         return true;
00045     }
00046 
00047     for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
00048         if ((dev = host->getDevice(i)) != NULL) {
00049             
00050             C270_DBG("Trying to connect C270 device\r\n");
00051             
00052             if(host->enumerate(dev, this)) {
00053                 break;
00054             }
00055             if (c270_device_found) {
00056                 USB_INFO("New C270 device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, c270_intf);
00057                 dev->setName("C270", c270_intf);
00058                 host->registerDriver(dev, c270_intf, this, &USBHostC270::onDisconnect);
00059                 int addr = dev->getAddress();
00060                 m_isoEp->init(addr, C270_EN, C270_MPS);
00061                 uint8_t buf[26];
00062                 memset(buf, 0, sizeof(buf));
00063                 buf[2] = _formatIndex;
00064                 buf[3] = _frameIndex;
00065                 *reinterpret_cast<uint32_t*>(buf+4) = _interval;
00066                 USB_TYPE res = Control(SET_CUR, VS_COMMIT_CONTROL, 1, buf, sizeof(buf));
00067                 if (res != USB_TYPE_OK) {
00068                     C270_DBG("SET_CUR VS_COMMIT_CONTROL FAILED");
00069                 }
00070                 res = setInterfaceAlternate(1, C270_IF_ALT); // alt=1 packet size = 192
00071                 if (res != USB_TYPE_OK) {
00072                     C270_DBG("SET_INTERFACE FAILED");
00073                 }
00074                 for(int i = 0; i < 16; i++) {
00075                     report_cc_count[i] = 0;
00076                     report_ps_cc_count[i] = 0;
00077                 }
00078                 LPC_USB->HcControl |= OR_CONTROL_PLE; // PeriodicListEnable
00079                 LPC_USB->HcControl |= OR_CONTROL_IE;  // IsochronousEnable
00080 
00081                 dev_connected = true;
00082                 return true;
00083             }
00084         }
00085     }
00086     init();
00087     return false;
00088 }
00089 
00090 void USBHostC270::onDisconnect()
00091 {
00092     C270_DBG("dev_connected: %d", dev_connected);
00093     if (dev_connected) {
00094         m_isoEp->disconnect();
00095         init();
00096     }
00097 }
00098 
00099 /*virtual*/ void USBHostC270::setVidPid(uint16_t vid, uint16_t pid)
00100 {
00101     C270_DBG("vid:%04x,pid:%04x", vid, pid);
00102     if (vid == C270_VID && pid == C270_PID) { 
00103         c270_vid_pid_found = true;
00104     } else {
00105         c270_vid_pid_found = false;
00106     }
00107 }
00108 
00109 /*virtual*/ bool USBHostC270::parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol) //Must return true if the interface should be parsed
00110 {
00111     C270_DBG("intf_nb=%d,intf_class=%02X,intf_subclass=%d,intf_protocol=%d", intf_nb, intf_class, intf_subclass, intf_protocol);
00112     if ((c270_intf == -1) && c270_vid_pid_found) {
00113         c270_intf = intf_nb;
00114         c270_vid_pid_found = false;
00115         c270_device_found = true;
00116         return true;
00117     }
00118     return false;
00119 }
00120 
00121 /*virtual*/ bool USBHostC270::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
00122 {
00123     C270_DBG("intf_nb:%d,type:%d,dir:%d",intf_nb, type, dir);
00124     return false;
00125 }
00126 
00127 #define SEQ_READ_IDOL 0
00128 #define SEQ_READ_EXEC 1
00129 #define SEQ_READ_DONE 2
00130 
00131 int USBHostC270::readJPEG(uint8_t* buf, int size, int timeout_ms) {
00132     _buf = buf;
00133     _pos = 0;
00134     _size = size;
00135     _seq = SEQ_READ_IDOL;
00136     setOnResult(this, &USBHostC270::callback_motion_jpeg);
00137     Timer timeout_t;
00138     timeout_t.reset();
00139     timeout_t.start();
00140     while(timeout_t.read_ms() < timeout_ms && _seq != SEQ_READ_DONE) {
00141         poll(timeout_ms);
00142     } 
00143     return _pos;
00144 }
00145 
00146 /* virtual */ void USBHostC270::outputJPEG(uint8_t c, int status) { // from decodeMJPEG
00147     if (_seq == SEQ_READ_IDOL) {
00148         if (status == JPEG_START) {
00149             _pos = 0;
00150             _seq = SEQ_READ_EXEC;
00151         }
00152     }
00153     if (_seq == SEQ_READ_EXEC) {
00154         if (_pos < _size) {
00155             _buf[_pos++] = c;  
00156         }  
00157         if (status == JPEG_END) {
00158             _seq = SEQ_READ_DONE;
00159         }
00160     }
00161 }
00162 
00163 void USBHostC270::callback_motion_jpeg(uint16_t frame, uint8_t* buf, int len) {
00164         inputPacket(buf, len);
00165 }