ov7670.h

00001 //
00002 // OV7670 library
00003 //
00004 
00005 #pragma once 
00006 #include "mbed.h"
00007 #include "ov7670reg.h"
00008 
00009 #define OV7670_WRITE (0x42)
00010 #define OV7670_READ  (0x43)
00011 #define OV7670_WRITEWAIT (20)
00012 #define OV7670_NOACK (0)
00013 #define OV7670_REGMAX (201)
00014 #define OV7670_I2CFREQ (100000) 
00015 
00016 
00017 class OV7670
00018 {
00019     public:
00020             
00021         OV7670(
00022             PinName sda,    // Camera I2C port
00023             PinName scl,    // Camera I2C port
00024             PinName vs,     // VSYNC
00025             PinName hr,     // HREF
00026             PinName we,     // WEN
00027                       
00028             PortName port,  // 8bit bus port
00029             int mask,       // 0b0000_0M65_4000_0321_L000_0000_0000_0000 = 0x07878000
00030             
00031             PinName rt,     // /RRST
00032             PinName o,      // /OE
00033             PinName rc      // RCLK      
00034             );
00035         
00036         ~OV7670();
00037         
00038         void CaptureNext(void);              // capture request
00039         bool CaptureDone(void);              // capture done? (with clear)
00040         void WriteReg(int addr,int data);    // write to camera
00041         int ReadReg(int addr);               // read from camera
00042         void Reset(void);                    // reset reg camera
00043         int Init(char c, int n);             // Old init reg
00044         int Init(char *format, int n);       // init reg    
00045         void VsyncHandler(void);             // New vsync handler
00046         void HrefHandler(void);              // href handler
00047         int ReadOnebyte(int mask1, int offset1, int mask2, int offset2);               // Data Read
00048         void ReadStart(void);                // Data Start
00049         void ReadStop(void);                 // Data Stop
00050        
00051         
00052     private:
00053         I2C _i2c;
00054         InterruptIn vsync,href;
00055         
00056         DigitalOut wen;
00057         PortIn data;
00058         DigitalOut rrst,oe,rclk;
00059         volatile int LineCounter;
00060         volatile int LastLines;
00061         volatile bool CaptureReq;
00062         volatile bool Busy;
00063         volatile bool Done; 
00064         char *format_temp;
00065 };