otStudio: ArduCam - Code example

 #include "main.h"
 #include <otFPGA.h>
 #include <otPort.h>
 #include <otSpi.h>
 #include <otI2cBus.h>
 #include <otSerial.h>
 #include <otTimer.h>
 #include <otPrintf.h>
 #include <otArduCAM.h>
 #include <otMalloc.h>
 #include <otFILE.h>
 #include <otImageFile.h>
 
 U32     fileCounter = 0;
 
 otArduCAM   cam;
 otFILE      file;
 otImageFile imgf;
 
 void grabMovie()
 {
     U32     len, pt = 0, et, i = 0;
     char    buf[32];
     sprintf(buf, "mov%04u.avi", fileCounter++);
     struct avi_t * avi = imgf.openAVI(buf, cam.width(), cam.height());
     printf("Press any key to stop ...\n");
     ElapsedTimeStart(TIMER0);
     while(UartCheckChar(UART0) == false)
     {
         len = cam.grab();
         et = ElapsedTimeEnd(TIMER0);
         printf("Grab: %4u %6u ms,\t", i, et - pt);
         pt = et;
         imgf.addFrameAVI(avi, (const U8 *) cam.buffer(), len);
         et = ElapsedTimeEnd(TIMER0);
         printf("Save: %6u ms\n", et - pt);
         pt = et;
         i++;
     }
     UartChar(UART0);
     F32 ms = ElapsedTimeEnd(TIMER0);
     ms = 1000.0f / (ms / i);
     imgf.setFrameRateAVI(avi, ms);
     imgf.closeAVI(avi);
     printf("End of movie grab, %f fps\n", ms);
 }
 
 void grabShot()
 {
     U32     et;
     char    tmpBuff[32];
     ElapsedTimeStart(TIMER0);
     U32 len = cam.grab();
     et = ElapsedTimeEnd(TIMER0);
     sprintf(tmpBuff, "I%07d.JPG", fileCounter++);
     FILE fd = file.fopen(tmpBuff, otFILE::A_CREATE_ALWAYS | otFILE::A_WRITE);
     if(fd)
     {
         file.fsave(fd, (const char *) cam.buffer(), len);
         file.fclose(fd);
         printf("Grab time: %4u ms, Size: %6u bytes, File: %s\n", et, len, tmpBuff);
     }
 }
 
 void setResolution()
 {
     printf("0  320x240\n");
     printf("1  640x480\n");
     printf("2 1024x768\n");
     printf("3 1280x960\n");
     printf("4 1600x1200\n");
     printf("5 2048x1536\n");
     printf("6 2592x1944\n");
     printf("7 1920x1080\n");
     printf("Specify the resolution: ");
     
     U8 ch = UartGetChar(UART0);
     cam.setSize(ch - 0x30);
     printf("\n");
     // Set again flip and mirror some settings change it
     cam.setMirrorFlip(cam.mirrorFlip());
     cam.setJpegQuality(cam.jpegQuality());
 }
 
 void setImageQuality()
 {
     printf("0 - High\n");
     printf("1 - Normal\n");
     printf("2 - Low\n");
     printf("> ");
     U8 ch = UartGetChar(UART0);
     cam.setJpegQuality((otArduCAM::JpegQuality) ch);
     printf("\n");
 }
 
 void Menu()
 {
     printf("Commands:\n");
     printf("G - Grab a shot\n");
     printf("M - Grab a movie\n");
     printf("Q - Set image quality\n");
     printf("R - Set resolution\n");
     printf("> ");
 }
 
 void setup()
 {
     // Setup the UART0 used by printf
     UartEnableSignals(UART0);
     UartSetBaud(UART0, 115200);
     
     TimerSetAsCounter(TIMER0);
     TimerEnable(TIMER0, true);
     
           // Init printf
     setStdout(4096, UART0); // printf output is now directed on UART0
     // Init the FPGA, slave selection are made with it
     FpgaInit();
     FpgaHiddenPort(HP_EXT_I2C, true);
     
     I2cBusReset();
     I2cBusFrequency(100, 30);
     
     DelayMs(1000);
     
           // Setup a SPI channel
     SpiChannel(SA_Y15, 5, 0, 0);
     SpiSet(SA_Y15);
     
     printf("ArduCAM grab & save test program. Rev 0.0.2\n");
     
     if(file.init())
     {
         file.setStdout(printf);
         printf("Format SD (Y/N) ?  ");
         char ch = UartGetChar(UART0);
         stdOutLF();
         if(ch == 'y' || ch == 'Y')
         {
             // Show format progress
             file.showWriteActivity(true);
             // Format SD
             if(!file.format("SD-DISK"))
                 goto error;
             file.showWriteActivity(false);
         }
         // Display free SD space
         printf("Disk free: %u Kbytes\n", file.free());
     }
     else
     {
 error:
         // Display error message
         printf("STATUS: %s\n", file.status());
         // Unmount and turn off SD
         file.end();
         DelayMs(100);
         HIBE;
     }
     
     imgf.init(&file);
     
     if(!cam.init(otArduCAM::OV5642, otArduCAM::IF_JPEG))
     {
         printf("ArduCAM not found!\n");
         IDLE;
     }
     cam.setSize(otArduCAM::OV5642_640x480);
     cam.setMirrorFlip(otArduCAM::P_FLIP);
 }
 
 void loop()
 {
     Menu();
     U8 ch = UartGetChar(UART0);
     printf("\n");
     switch(ch)
     {
         case 'G':   grabShot();
                     break;
         case 'M':   grabMovie();
                     break;
         case 'Q':   setImageQuality();
                     break;
         case 'R':   setResolution();
                     break;
     }
 }
ArduCam - Code example [ArduCam - 5MP OV5642 Mini Camera Module]

ArduCam - Code example
[ArduCam - 5MP OV5642 Mini Camera Module]
