File content as of revision 1:135493341acc:

#include "CameraC1098.h"

#define WAITIDLE    waitIdle
#define SENDFUNC    sendBytes
#define RECVFUNC    recvBytes
#define WAITFUNC    waitRecv
int num=0;
FILE *fp_jpeg;

CameraC1098::CameraC1098(PinName tx, PinName rx, int baud) : serial(tx, rx)
{
    serial._baud(baud);
}

CameraC1098::~CameraC1098()
{
}

CameraC1098::ErrorNumber CameraC1098::sync()
{
    for (int i = 0; i < SYNCMAX; i++) {
        if (NoError == sendSync()) {
            if (NoError == recvAckOrNck()) {
                if (NoError == recvSync()) {
                    if (NoError == sendAck(0x0D, 0x00)) {

                        wait(2.0);
                        return NoError;
                    }
                }
            }
        }
        wait_ms(50);
    }
    return UnexpectedReply;
}

CameraC1098::ErrorNumber CameraC1098::init(Baud baud,JpegResolution jr)
{
    int i ;
    ErrorNumber en;
    WAITIDLE();
    setmbedBaud((Baud)(0x07)) ;

    for ( i = 1 ; i < 7 ; i++ ) {
        if ( NoError == sendSync() ) {
            if ( NoError == recvAckOrNck() ) {
                if ( NoError == recvSync() ) {
                    if ( NoError == sendAck(0x0D, 0x00) ) {
                        en = sendInitial(baud,jr);
                        if (NoError != en) {
                            return en;
                        }
                        en = recvAckOrNck();
                        if (NoError != en) {
                            return en;
                        }
                        wait_ms(50) ;
                        setmbedBaud(baud);
                        //wait_ms(50) ;
                        static bool alreadySetupPackageSize = false;
                        if (!alreadySetupPackageSize) {
                            en = sendSetPackageSize(packageSize);
                            if (NoError != en) {
                                return en;
                            }
                            WAITFUNC();
                            en = recvAckOrNck();
                            if (NoError != en) {
                                return en;
                            }
                            alreadySetupPackageSize = true;
                        }

                        wait(2.0);
                        return (ErrorNumber)NoError;

                    }
                }
            } else {
                setmbedBaud((Baud)(i+1)) ;
            }
        }
        wait_ms(50);
    }
    return UnexpectedReply;
}


CameraC1098::ErrorNumber CameraC1098::getJpegSnapshotPicture()
{
    WAITIDLE();
    ErrorNumber en;


    en = sendSnapshot();
    if (NoError != en) {
        return en;
    }
    WAITFUNC();
    en = recvAckOrNck();
    if (NoError != en) {
        return en;
    }

    en = sendGetPicture();
    if (NoError != en) {
        return en;
    }
    WAITFUNC();
    en = recvAckOrNck();
    if (NoError != en) {
        return en;
    }

    /*
     * Data : snapshot picture
     */
    uint32_t length = 0;
    WAITFUNC();
    en = recvData(&length);
    if (NoError != en) {
        return en;
    }
    en = sendAck(0x00, 0);
    if (NoError != en) {
        return en;
    }

    char databuf[packageSize - 6];
    uint16_t pkg_total = length / (packageSize - 6);
    for (int i = 0; i <= (int)pkg_total; i++) {
        uint16_t checksum = 0;
        // ID.
        char idbuf[2];
        WAITFUNC();
        if (!RECVFUNC(idbuf, sizeof(idbuf))) {
            return (ErrorNumber)UnexpectedReply;
        }
        checksum += idbuf[0];
        checksum += idbuf[1];
        uint16_t id = (idbuf[1] << 8) | (idbuf[0] << 0);
        if (id != i) {
            return (ErrorNumber)UnexpectedReply;
        }

        // Size of the data.
        char dsbuf[2];
        WAITFUNC();
        if (!RECVFUNC(dsbuf, sizeof(dsbuf))) {
            return (ErrorNumber)UnexpectedReply;
        }

        // Received the data.
        checksum += dsbuf[0];
        checksum += dsbuf[1];
        uint16_t ds = (dsbuf[1] << 8) | (dsbuf[0] << 0);
        WAITFUNC();
        if (!RECVFUNC(&databuf[0], ds)) {
            return (ErrorNumber)UnexpectedReply;
        }
        for (int j = 0; j < ds; j++) {
            checksum += databuf[j];
        }

        // Verify code.
        char vcbuf[2];
        WAITFUNC();
        if (!RECVFUNC(vcbuf, sizeof(vcbuf))) {
            return (ErrorNumber)UnexpectedReply;
        }
        uint16_t vc = (vcbuf[1] << 8) | (vcbuf[0] << 0);
        if (vc != (checksum & 0xff)) {
            return (ErrorNumber)UnexpectedReply;
        }

        /*
         * Call a call back function.
         * You can block this function while working.
         */
        size_t siz = ds;
        for (int ii = 0; ii < (int)siz; ii++) {
            fprintf(fp_jpeg,"%02x ", databuf[ii]);
            if(++num%16==0) fprintf(fp_jpeg,"\r\n");
        }
        /*
         * We should wait for camera working before reply a ACK.
         */
        wait_ms(100);
        en = sendAck(0x00, 1 + i);
        if (NoError != en) {
            return en;
        }
    }

    return (ErrorNumber)NoError;
}



CameraC1098::ErrorNumber CameraC1098::sendInitial(Baud baud, JpegResolution jr)
{
    char send[COMMAND_LENGTH];

    send[0] = 0xAA;
    send[1] = 0x01;
    send[2] = (char)baud;
    send[3] = 0x07;
    send[4] = 0x00;
    send[5] = (char)jr;

    if (!SENDFUNC(send, sizeof(send))) {
        return (ErrorNumber)SendRegisterTimeout;
    }

    return (ErrorNumber)NoError;
}

CameraC1098::ErrorNumber CameraC1098::sendGetPicture(void)
{
    char send[COMMAND_LENGTH];

    send[0] = 0xAA;
    send[1] = 0x04;
    send[2] = 0x01;
    send[3] = 0x00;
    send[4] = 0x00;
    send[5] = 0x00;

    if (!SENDFUNC(send, sizeof(send))) {
        return (ErrorNumber)SendRegisterTimeout;
    }
    return (ErrorNumber)NoError;
}

CameraC1098::ErrorNumber CameraC1098::sendSnapshot(void)
{
    char send[COMMAND_LENGTH];
    send[0] = 0xAA;
    send[1] = 0x05;
    send[2] = 0x00;
    send[3] = 0x00;
    send[4] = 0x00;
    send[5] = 0x00;

    if (!SENDFUNC(send, sizeof(send))) {
        return (ErrorNumber)SendRegisterTimeout;
    }
    return (ErrorNumber)NoError;
}

CameraC1098::ErrorNumber CameraC1098::sendSetPackageSize(uint16_t packageSize)
{
    char send[COMMAND_LENGTH];
    send[0] = 0xAA;
    send[1] = 0x06;
    send[2] = 0x08;
    send[3] = (packageSize >> 0) & 0xff;
    send[4] = (packageSize >> 8) & 0xff;
    send[5] = 0x00;

    if (!SENDFUNC(send, sizeof(send))) {
        return (ErrorNumber)SendRegisterTimeout;
    }
    return (ErrorNumber)NoError;
}

void CameraC1098::setmbedBaud(Baud baud)
{
    switch((int)baud) {
        case 0x02:
            serial._baud(460800);
            break;
        case 0x03:
            serial._baud(230400);
            break;
        case 0x04:
            serial._baud(115200);
            break;
        case 0x05:
            serial._baud(57600);
            break;
        case 0x06:
            serial._baud((int)28800);
            break;
        case 0x07:
            serial._baud(14400);
            break;
        default:
            serial._baud(14400);
    }
}


CameraC1098::ErrorNumber CameraC1098::sendReset(ResetType specialReset)
{
    char send[COMMAND_LENGTH];
    send[0] = 0xAA;
    send[1] = 0x08;
    send[2] = 0x00;
    send[3] = 0x00;
    send[4] = 0x00;
    send[5] = specialReset;
    /*
     * Special reset : If the parameter is 0xFF, the command is a special Reset command and the firmware responds to it immediately.
     */

    if (!SENDFUNC(send, sizeof(send))) {
        return (ErrorNumber)SendRegisterTimeout;
    }

    return (ErrorNumber)NoError;
}


CameraC1098::ErrorNumber CameraC1098::recvData(uint32_t *length)
{
    char recv[COMMAND_LENGTH];
    if (!RECVFUNC(recv, sizeof(recv))) {
        return (ErrorNumber)UnexpectedReply;
    }
    if ((0xAA != recv[0]) || (0x0A != recv[1])) {
        return (ErrorNumber)UnexpectedReply;
    }
    recv[2] = (char)0x01;
    *length = (recv[5] << 16) | (recv[4] << 8) | (recv[3] << 0);
    return (ErrorNumber)NoError;
}

CameraC1098::ErrorNumber CameraC1098::sendSync()
{
    char send[COMMAND_LENGTH];
    send[0] = 0xAA;
    send[1] = 0x0D;
    send[2] = 0x00;
    send[3] = 0x00;
    send[4] = 0x00;
    send[5] = 0x00;


    if (!SENDFUNC(send, sizeof(send))) {
        return (ErrorNumber)SendRegisterTimeout;
    }
    return (ErrorNumber)NoError;
}

CameraC1098::ErrorNumber CameraC1098::recvSync()
{
    char recv[COMMAND_LENGTH];

    if (!RECVFUNC(recv, sizeof(recv))) {
        return (ErrorNumber)UnexpectedReply;
    }
    if ((0xAA != recv[0]) || (0x0D != recv[1])) {
        return (ErrorNumber)UnexpectedReply;
    }
    return (ErrorNumber)NoError;
}

CameraC1098::ErrorNumber CameraC1098::sendAck(uint8_t commandId, uint16_t packageId)
{
    char send[COMMAND_LENGTH];

    send[0] = 0xAA;
    send[1] = 0x0E;
    send[2] = commandId;
    send[3] = 0x00;    // ACK counter is not used.
    send[4] = (packageId >> 0) & 0xff;
    send[5] = (packageId >> 8) & 0xff;
    if (!SENDFUNC(send, sizeof(send))) {
        return (ErrorNumber)SendRegisterTimeout;
    }
    return (ErrorNumber)NoError;
}

CameraC1098::ErrorNumber CameraC1098::recvAckOrNck()
{
    char recv[COMMAND_LENGTH];

    if (!RECVFUNC(recv, sizeof(recv))) {
        return (ErrorNumber)UnexpectedReply;
    }
    if ((0xAA == recv[0]) && (0x0E == recv[1])) {
        return (ErrorNumber)NoError;
    }
    if ((0xAA == recv[0]) && (0x0F == recv[1]) && (0x00 == recv[2])) {
        return (ErrorNumber)NoError;
    }
    if ((0xAA == recv[0]) && (0x0F == recv[1])) {
        return (ErrorNumber)recv[4];
    }
    return (ErrorNumber)UnexpectedReply;
}

bool CameraC1098::sendBytes(char *buf, size_t len, int timeout_us)
{
    for (uint32_t i = 0; i < (uint32_t)len; i++) {
        int cnt = 0;
        while (!serial.writeable()) {
            wait_us(1);
            cnt++;
            if (timeout_us < cnt) {
                return false;
            }
        }
        serial.putc(buf[i]);
    }
    return true;
}

bool CameraC1098::recvBytes(char *buf, size_t len, int timeout_us)
{
    for (uint32_t i = 0; i < (uint32_t)len; i++) {
        int cnt = 0;
        while (!serial.rreadable()) {
            wait_us(1);
            cnt++;
            if (timeout_us < cnt) {
                return false;
            }
        }
        buf[i] = serial.ggetc();
    }
    return true;
}

bool CameraC1098::waitRecv()
{
    while (!serial.rreadable()) {
    }
    return true;
}

bool CameraC1098::waitIdle()
{
    while (serial.rreadable()) {
        serial.ggetc();
    }
    return true;
}

void CameraC1098::Sync(void)
{
    CameraC1098::ErrorNumber err = CameraC1098::NoError;

    err = sync();
    int count=0;
    while(err) {
        printf("count = %d\r\n",count);
        switch(count) {
            case 0:
                setmbedBaud(CameraC1098::Baud14400);
                break;
            case 1:
                setmbedBaud(CameraC1098::Baud115200);
                break;
            default:
                count=0;
        }
        count++;
        err = sync();
        printf("init err1=%d\r\n", err);
        if(!err) {
            printf("to 115200\r\n");
            init(CameraC1098::Baud115200, CameraC1098::JpegResolution320x240);
            printf("init err2=%d\r\n", err);
            setmbedBaud(CameraC1098::Baud115200);
            printf("init err3=%d\r\n", err);
        }
    }
}

void CameraC1098::jpeg_snapshot(int CAPTURE_FRAMES)
{
    for (int i = 0; i < CAPTURE_FRAMES; i++) {
        char fname[64];
        snprintf(fname, sizeof(fname), "/fs/test%d.txt",i);
        fp_jpeg = fopen(fname, "w");
        getJpegSnapshotPicture();
        fclose(fp_jpeg);
    }
}