Simple USBHost WebCam test program
Dependencies: F401RE-USBHost mbed
Fork of KL46Z-USBHostC270_example by
WebカメラからJPEG画像を読み取るテストプログラムです。
使い方はKL46Z-USBHostC270_exampleと同じです。
動作確認カメラ: Logitech C270, Logitech C210, Logitech Q200R(Qcam Orbit AF), LifeCam VX-500
KL46Z-USBHostC270/USBHostC270.cpp@0:a72d9b047d8d, 2014-01-27 (annotated)
- Committer:
- va009039
- Date:
- Mon Jan 27 11:07:34 2014 +0000
- Revision:
- 0:a72d9b047d8d
first commit
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
va009039 | 0:a72d9b047d8d | 1 | #include "USBHostC270.h" |
va009039 | 0:a72d9b047d8d | 2 | //#include "dbg.h" |
va009039 | 0:a72d9b047d8d | 3 | |
va009039 | 0:a72d9b047d8d | 4 | #define C270_DEBUG 1 |
va009039 | 0:a72d9b047d8d | 5 | #ifdef C270_DEBUG |
va009039 | 0:a72d9b047d8d | 6 | #define C270_DBG(x, ...) std::printf("[%s:%d]"x"\r\n", __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__); |
va009039 | 0:a72d9b047d8d | 7 | #else |
va009039 | 0:a72d9b047d8d | 8 | #define C270_DBG(...) while(0); |
va009039 | 0:a72d9b047d8d | 9 | #endif |
va009039 | 0:a72d9b047d8d | 10 | |
va009039 | 0:a72d9b047d8d | 11 | USBHostC270::USBHostC270(int formatIndex, int frameIndex, uint32_t interval) { |
va009039 | 0:a72d9b047d8d | 12 | _formatIndex = formatIndex; |
va009039 | 0:a72d9b047d8d | 13 | _frameIndex = frameIndex; |
va009039 | 0:a72d9b047d8d | 14 | _interval = interval; |
va009039 | 0:a72d9b047d8d | 15 | clearOnResult(); |
va009039 | 0:a72d9b047d8d | 16 | host = USBHost::getHostInst(); |
va009039 | 0:a72d9b047d8d | 17 | report = &host->report; |
va009039 | 0:a72d9b047d8d | 18 | setup(); |
va009039 | 0:a72d9b047d8d | 19 | } |
va009039 | 0:a72d9b047d8d | 20 | |
va009039 | 0:a72d9b047d8d | 21 | void USBHostC270::setup() { |
va009039 | 0:a72d9b047d8d | 22 | ep_iso_in.setAddress(C270_EN); |
va009039 | 0:a72d9b047d8d | 23 | ep_iso_in.setSize(C270_MPS); |
va009039 | 0:a72d9b047d8d | 24 | uint8_t buf[26]; |
va009039 | 0:a72d9b047d8d | 25 | memset(buf, 0, sizeof(buf)); |
va009039 | 0:a72d9b047d8d | 26 | buf[2] = _formatIndex; |
va009039 | 0:a72d9b047d8d | 27 | buf[3] = _frameIndex; |
va009039 | 0:a72d9b047d8d | 28 | *reinterpret_cast<uint32_t*>(buf+4) = _interval; |
va009039 | 0:a72d9b047d8d | 29 | USB_TYPE res = Control(SET_CUR, VS_COMMIT_CONTROL, 1, buf, sizeof(buf)); |
va009039 | 0:a72d9b047d8d | 30 | if (res != USB_TYPE_OK) { |
va009039 | 0:a72d9b047d8d | 31 | C270_DBG("SET_CUR VS_COMMIT_CONTROL FAILED"); |
va009039 | 0:a72d9b047d8d | 32 | } |
va009039 | 0:a72d9b047d8d | 33 | res = setInterfaceAlternate(1, C270_IF_ALT); // alt=1 packet size = 192 |
va009039 | 0:a72d9b047d8d | 34 | if (res != USB_TYPE_OK) { |
va009039 | 0:a72d9b047d8d | 35 | C270_DBG("SET_INTERFACE FAILED"); |
va009039 | 0:a72d9b047d8d | 36 | } |
va009039 | 0:a72d9b047d8d | 37 | } |
va009039 | 0:a72d9b047d8d | 38 | |
va009039 | 0:a72d9b047d8d | 39 | #define SEQ_READ_IDOL 0 |
va009039 | 0:a72d9b047d8d | 40 | #define SEQ_READ_EXEC 1 |
va009039 | 0:a72d9b047d8d | 41 | #define SEQ_READ_DONE 2 |
va009039 | 0:a72d9b047d8d | 42 | |
va009039 | 0:a72d9b047d8d | 43 | int USBHostC270::readJPEG(uint8_t* buf, int size, int timeout_ms) { |
va009039 | 0:a72d9b047d8d | 44 | _buf = buf; |
va009039 | 0:a72d9b047d8d | 45 | _pos = 0; |
va009039 | 0:a72d9b047d8d | 46 | _size = size; |
va009039 | 0:a72d9b047d8d | 47 | _seq = SEQ_READ_IDOL; |
va009039 | 0:a72d9b047d8d | 48 | setOnResult(this, &USBHostC270::callback_motion_jpeg); |
va009039 | 0:a72d9b047d8d | 49 | Timer timeout_t; |
va009039 | 0:a72d9b047d8d | 50 | timeout_t.reset(); |
va009039 | 0:a72d9b047d8d | 51 | timeout_t.start(); |
va009039 | 0:a72d9b047d8d | 52 | while(timeout_t.read_ms() < timeout_ms && _seq != SEQ_READ_DONE) { |
va009039 | 0:a72d9b047d8d | 53 | poll(); |
va009039 | 0:a72d9b047d8d | 54 | } |
va009039 | 0:a72d9b047d8d | 55 | return _pos; |
va009039 | 0:a72d9b047d8d | 56 | } |
va009039 | 0:a72d9b047d8d | 57 | |
va009039 | 0:a72d9b047d8d | 58 | /* virtual */ void USBHostC270::outputJPEG(uint8_t c, int status) { // from decodeMJPEG |
va009039 | 0:a72d9b047d8d | 59 | if (_seq == SEQ_READ_IDOL) { |
va009039 | 0:a72d9b047d8d | 60 | if (status == JPEG_START) { |
va009039 | 0:a72d9b047d8d | 61 | _pos = 0; |
va009039 | 0:a72d9b047d8d | 62 | _seq = SEQ_READ_EXEC; |
va009039 | 0:a72d9b047d8d | 63 | } |
va009039 | 0:a72d9b047d8d | 64 | } |
va009039 | 0:a72d9b047d8d | 65 | if (_seq == SEQ_READ_EXEC) { |
va009039 | 0:a72d9b047d8d | 66 | if (_pos < _size) { |
va009039 | 0:a72d9b047d8d | 67 | _buf[_pos++] = c; |
va009039 | 0:a72d9b047d8d | 68 | } |
va009039 | 0:a72d9b047d8d | 69 | if (status == JPEG_END) { |
va009039 | 0:a72d9b047d8d | 70 | _seq = SEQ_READ_DONE; |
va009039 | 0:a72d9b047d8d | 71 | } |
va009039 | 0:a72d9b047d8d | 72 | } |
va009039 | 0:a72d9b047d8d | 73 | } |
va009039 | 0:a72d9b047d8d | 74 | |
va009039 | 0:a72d9b047d8d | 75 | void USBHostC270::callback_motion_jpeg(uint16_t frame, uint8_t* buf, int len) { |
va009039 | 0:a72d9b047d8d | 76 | inputPacket(buf, len); |
va009039 | 0:a72d9b047d8d | 77 | } |