File content as of revision 66:5d43988d100c:

/*************************************************** 
  This is a library for the Adafruit TTL JPEG Camera (VC0706 chipset)

  Pick one up today in the adafruit shop!
  ------> http://www.adafruit.com/products/397

  These displays use Serial to communicate, 2 pins are required to interface

  Adafruit invests time and resources providing this open source code, 
  please support Adafruit and open-source hardware by purchasing 
  products from Adafruit!

  Written by Limor Fried/Ladyada for Adafruit Industries.  
  BSD license, all text above must be included in any redistribution
 ****************************************************/


#include "camera.h"

Serial* Camera::camera=NULL;
uint8_t Camera::serialNum=0;

Serial& Camera::getSerial(){
    if(camera==NULL){
        // Init Camera
        camera=new Serial(CAMERAPINTX,CAMERAPINRX);
        camera->baud(CAMERABAUD);
        serialNum=0;
        Camera temp;
        temp.reset();
    }
    return *camera;
}

bool Camera::reset() {
  uint8_t args[] = {0x0};
  return runCommand(VC0706_RESET, args, 1, 5);
}

/*
// Initialization code used by all constructor types
void Camera::common_init(void) {
  swSerial  = NULL;
  hwSerial  = NULL;
  frameptr  = 0;
  bufferLen = 0;
  serialNum = 0;
}

// Constructor when using SoftwareSerial or NewSoftSerial
#if ARDUINO >= 100
Camera::Camera(SoftwareSerial *ser) {
#else
Camera::Camera(NewSoftSerial *ser) {
#endif
  common_init();  // Set everything to common state, then...
  swSerial = ser; // ...override swSerial with value passed.
}

// Constructor when using HardwareSerial
Camera::Camera(HardwareSerial *ser) {
  common_init();  // Set everything to common state, then...
  hwSerial = ser; // ...override hwSerial with value passed.
}

boolean Camera::begin(uint16_t baud) {
  if(swSerial) swSerial->begin(baud);
  else         hwSerial->begin(baud);
  return reset();
}


boolean Camera::motionDetected() {
  if (readResponse(4, 200) != 4) {
    return false;
  }
  if (! verifyResponse(VC0706_COMM_MOTION_DETECTED))
    return false;

  return true;
}


uint8_t Camera::setMotionStatus(uint8_t x, uint8_t d1, uint8_t d2) {
  uint8_t args[] = {0x03, x, d1, d2};

  return runCommand(VC0706_MOTION_CTRL, args, sizeof(args), 5);
}


uint8_t Camera::getMotionStatus(uint8_t x) {
  uint8_t args[] = {0x01, x};

  return runCommand(VC0706_MOTION_STATUS, args, sizeof(args), 5);
}


boolean Camera::setMotionDetect(boolean flag) {
  if (! setMotionStatus(VC0706_MOTIONCONTROL, 
            VC0706_UARTMOTION, VC0706_ACTIVATEMOTION))
    return false;

  uint8_t args[] = {0x01, flag};
  
  runCommand(VC0706_COMM_MOTION_CTRL, args, sizeof(args), 5);
}



boolean Camera::getMotionDetect(void) {
  uint8_t args[] = {0x0};

  if (! runCommand(VC0706_COMM_MOTION_STATUS, args, 1, 6))
    return false;

  return camerabuff[5];
}
*/
uint8_t Camera::getImageSize() {
  uint8_t args[] = {0x4, 0x4, 0x1, 0x00, 0x19};
  if (! runCommand(VC0706_READ_DATA, args, sizeof(args), 6))
    return 0xFF;

  return camerabuff[5];
}

bool Camera::setImageSize(uint8_t x) {
  uint8_t args[] = {0x05, 0x04, 0x01, 0x00, 0x19, x};
  return runCommand(VC0706_WRITE_DATA, args, sizeof(args), 5);
}
/*
// downsize image control 

uint8_t Camera::getDownsize(void) {
  uint8_t args[] = {0x0};
  if (! runCommand(VC0706_DOWNSIZE_STATUS, args, 1, 6)) 
    return -1;

   return camerabuff[5];
}

boolean Camera::setDownsize(uint8_t newsize) {
  uint8_t args[] = {0x01, newsize};

  return runCommand(VC0706_DOWNSIZE_CTRL, args, 2, 5);
}

// other high level commands 
*/
char * Camera::getVersion(void) {
  uint8_t args[] = {0x01};
  
  sendCommand(VC0706_GEN_VERSION, args, 1);
  // get reply
  if (!readResponse(CAMERABUFFSIZ, 200)){
    return 0;
  }
  camerabuff[bufferLen] = 0;  // end it!
  return (char *)camerabuff;  // return it!
}
/*

// high level photo comamnds

void Camera::OSD(uint8_t x, uint8_t y, char *str) {
  if (strlen(str) > 14) { str[13] = 0; }

  uint8_t args[17] = {strlen(str), strlen(str)-1, (y & 0xF) | ((x & 0x3) << 4)};

  for (uint8_t i=0; i<strlen(str); i++) {
    char c = str[i];
    if ((c >= '0') && (c <= '9')) {
      str[i] -= '0';
    } else if ((c >= 'A') && (c <= 'Z')) {
      str[i] -= 'A';
      str[i] += 10;
    } else if ((c >= 'a') && (c <= 'z')) {
      str[i] -= 'a';
      str[i] += 36;
    }

    args[3+i] = str[i];
  }

   runCommand(VC0706_OSD_ADD_CHAR, args, strlen(str)+3, 5);
   printBuff();
}

boolean Camera::setCompression(uint8_t c) {
  uint8_t args[] = {0x5, 0x1, 0x1, 0x12, 0x04, c};
  return runCommand(VC0706_WRITE_DATA, args, sizeof(args), 5);
}

uint8_t Camera::getCompression(void) {
  uint8_t args[] = {0x4, 0x1, 0x1, 0x12, 0x04};
  runCommand(VC0706_READ_DATA, args, sizeof(args), 6);
  printBuff();
  return camerabuff[5];
}

boolean Camera::setPTZ(uint16_t wz, uint16_t hz, uint16_t pan, uint16_t tilt) {
  uint8_t args[] = {0x08, wz >> 8, wz, 
            hz >> 8, wz, 
            pan>>8, pan, 
            tilt>>8, tilt};

  return (! runCommand(VC0706_SET_ZOOM, args, sizeof(args), 5));
}


boolean Camera::getPTZ(uint16_t &w, uint16_t &h, uint16_t &wz, uint16_t &hz, uint16_t &pan, uint16_t &tilt) {
  uint8_t args[] = {0x0};
  
  if (! runCommand(VC0706_GET_ZOOM, args, sizeof(args), 16))
    return false;
  printBuff();

  w = camerabuff[5];
  w <<= 8;
  w |= camerabuff[6];

  h = camerabuff[7];
  h <<= 8;
  h |= camerabuff[8];

  wz = camerabuff[9];
  wz <<= 8;
  wz |= camerabuff[10];

  hz = camerabuff[11];
  hz <<= 8;
  hz |= camerabuff[12];

  pan = camerabuff[13];
  pan <<= 8;
  pan |= camerabuff[14];

  tilt = camerabuff[15];
  tilt <<= 8;
  tilt |= camerabuff[16];

  return true;
}

*/
bool Camera::takePicture() {
  frameptr = 0;
  return cameraFrameBuffCtrl(VC0706_STOPCURRENTFRAME); 
}

bool Camera::resumeVideo() {
  return cameraFrameBuffCtrl(VC0706_RESUMEFRAME); 
}
/*
boolean Camera::TVon() {
  uint8_t args[] = {0x1, 0x1};
  return runCommand(VC0706_TVOUT_CTRL, args, sizeof(args), 5);
}
boolean Camera::TVoff() {
  uint8_t args[] = {0x1, 0x0};
  return runCommand(VC0706_TVOUT_CTRL, args, sizeof(args), 5);
}
*/
bool Camera::cameraFrameBuffCtrl(uint8_t command) {
  uint8_t args[] = {0x1, command};
  return runCommand(VC0706_FBUF_CTRL, args, sizeof(args), 5);
}

uint32_t Camera::frameLength(void) {
  uint8_t args[] = {0x01, 0x00};
  if (!runCommand(VC0706_GET_FBUF_LEN, args, sizeof(args), 9))
    return 0;

  uint32_t len;
  len = camerabuff[5];
  len <<= 8;
  len |= camerabuff[6];
  len <<= 8;
  len |= camerabuff[7];
  len <<= 8;
  len |= camerabuff[8];

  return len;
}
/*

uint8_t Camera::available(void) {
  return bufferLen;
}

*/
uint8_t * Camera::readPicture(uint8_t n,uint8_t* outSize) {
  uint8_t args[] = {0x0C, 0x0, 0x0A, 
                    0, 0, frameptr >> 8, frameptr & 0xFF, 
                    0, 0, 0, n, 
                    CAMERADELAY >> 8, CAMERADELAY & 0xFF};

  if (! runCommand(VC0706_READ_FBUF, args, sizeof(args), 5, false))
    return 0;


  // read into the buffer PACKETLEN!
  int outputSize=readResponse(n+5, CAMERADELAY)-5;
  if (outputSize == 0) 
      return 0;
  if(outSize!=NULL)*outSize=outputSize;

  frameptr += outputSize;

  return camerabuff;
}


//
// Low level commands
//

bool Camera::runCommand(uint8_t cmd, uint8_t *args, uint8_t argn, uint8_t resplen, bool flushflag) {
  // flush out anything in the buffer?
  if (flushflag) {
    readResponse(100, 10); 
  }

  sendCommand(cmd, args, argn);
  if (readResponse(resplen, 200) != resplen) 
    return false;
  if (! verifyResponse(cmd))
    return false;
  return true;
}


void Camera::sendCommand(uint8_t cmd, uint8_t args[], uint8_t argn) {
    getSerial().putc(0x56);
    getSerial().putc(serialNum);
    getSerial().putc(cmd);
    
    for (uint8_t i=0; i<argn; i++) {
      getSerial().putc(args[i]);
    }
}

uint8_t Camera::readResponse(uint8_t numbytes, uint8_t timeout) {
  uint16_t counter = 0;
  bufferLen = 0;
 
  while ((timeout*100 != counter) && (bufferLen != numbytes)){
    int avail = getSerial().readable();
    if (avail <= 0) {
      wait_us(10);
      counter++;
      continue;
    }
    counter = 0;
    // there's a byte!
    camerabuff[bufferLen++] = getSerial().getc();
  }
  return bufferLen;
}

bool Camera::verifyResponse(uint8_t command) {
  if ((camerabuff[0] != 0x76) ||
      (camerabuff[1] != serialNum) ||
      (camerabuff[2] != command) ||
      (camerabuff[3] != 0x0))
      return false;
  return true;
  
}

void Camera::printBuff() {
}