angelo mottolese
ov7670 FIFO from Edoardo De Marchi
Dependents: 3D_Scanner_OV7670_
Fork of
OV7670 with FIFO
by 
angelo mottolese
OV7670.cpp
- Committer:
- rulla
- Date:
- 2017-10-03
- Revision:
- 1:f5f5d7c979cf
- Parent:
- 0:101fbacf126f
File content as of revision 1:f5f5d7c979cf:
#include "mbed.h"
#include "ov7670reg.h"
#include "OV7670.h"
OV7670::OV7670(PinName sda, PinName scl, PinName vs, PinName hr, PinName we, PortName port, int mask, PinName rt, PinName o, PinName rc) : camera(sda,scl),vsync(vs),href(hr),wen(we),dataP(port,mask),rrst(rt),oe(o),rclk(rc)
{
camera.stop() ;
camera.frequency(OV7670_I2CFREQ) ;
vsync.fall(this,&OV7670::VsyncHandler) ;
//camera.start() ;
CaptureReq = false ;
Busy = false ;
Done = false ;
LineCounter = 0 ;
rrst = 1 ;
oe = 1 ;
rclk = 1 ;
wen = 0 ;
}
OV7670::~OV7670()
{
}
// capture request
void OV7670::CaptureNext(void)
{
CaptureReq = true ;
Busy = true ;
}
// capture done? (with clear)
bool OV7670::CaptureDone(void)
{
bool result ;
if (Busy) {
result = false ;
} else {
result = Done ;
Done = false ;
}
return result ;
}
// write to camera
void OV7670::WriteReg(int addr,char data)
{
// WRITE 0x42,ADDR,DATA
//camera.write(OV7670_WRITE,d1,2) ;
camera.start() ;
camera.write(OV7670_WRITE) ;
wait_us(OV7670_WRITEWAIT);
camera.write(addr) ;
wait_us(OV7670_WRITEWAIT);
camera.write(data) ;
camera.stop() ;
}
// read from camera
char OV7670::ReadReg(int addr)
{
/*
char buff[20];
char buf[20];
buff[0] = addr;
buff[1] = OV7670_NOACK;
camera.write(OV7670_WRITE,buff,1);
camera.read(OV7670_WRITE+1,buf,1);
return buf[0];*/
int data ;
// WRITE 0x42,ADDR
camera.start() ;
camera.write(OV7670_WRITE) ;
wait_us(OV7670_WRITEWAIT);
camera.write(addr) ;
camera.stop() ;
wait_us(OV7670_WRITEWAIT);
// WRITE 0x43,READ
camera.start() ;
camera.write(OV7670_READ) ;
wait_us(OV7670_WRITEWAIT);
data = camera.read(OV7670_NOACK) ;
camera.stop() ;
return data ;
}
void OV7670::test(void)
{
printf("ResetMAMT\n");
}
void OV7670::Reset(void)
{
WriteReg(REG_COM7,0x80) ; // RESET CAMERA
wait_ms(200) ;
printf("Reset\n");
}
void OV7670::InitQQVGA(int SIZEX)
{
Reset(); // Resets all registers to default values
Reset(); // Resets all registers to default values
WriteReg(DBLV, 0x0a); // bypass PLL
WriteReg(REG_CLKRC,0x80);//0x80
WriteReg(SCALING_XSC, 0x3a);
WriteReg(SCALING_YSC, 0x35);
WriteReg(REG_HREF, 0x24);
WriteReg(REG_HSTART, 0x16);
WriteReg(REG_HSTOP, 0x04);
WriteReg(REG_VREF, 0x0a);
WriteReg(REG_VSTART,0x02);
WriteReg(REG_VSTOP, 0x7a);
if(SIZEX==640) {
WriteReg(REG_CLKRC,0x0);//0x80
WriteReg(REG_COM7,0x04) ;
WriteReg(REG_COM3,0x0) ;
WriteReg(REG_COM14, 0x00);
WriteReg(SCALING_DCWCTR,0x11);
WriteReg(SCALING_PCLK_DIV,0xf0);
WriteReg(SCALING_PCLK_DELAY,0x02);
WriteReg(0xff, 0xff); /* END MARKER */
}
if(SIZEX==320) {
WriteReg(REG_COM7,0x4) ;
WriteReg(REG_COM17,0x00) ;
WriteReg(REG_COM3,0x38) ;
WriteReg(REG_COM14, 0x19);
WriteReg(REG_COM2, 0x3);
WriteReg(SCALING_DCWCTR,0x11);
WriteReg(SCALING_PCLK_DIV,0xf1);
WriteReg(SCALING_PCLK_DELAY,0x02);
WriteReg(0x7a, 0x20);
WriteReg(0x7b, 0x1c);
WriteReg(0x7c, 0x28);
WriteReg(0x7d, 0x3c);
WriteReg(0x7e, 0x55);
WriteReg(0x7f, 0x68);
WriteReg(0x80, 0x76);
WriteReg(0x81, 0x80);
WriteReg(0x82, 0x88);
WriteReg(0x83, 0x8f);
WriteReg(0x84, 0x96);
WriteReg(0x85, 0xa3);
WriteReg(0x86, 0xaf);
WriteReg(0x87, 0xc4);
WriteReg(0x88, 0xd7);
WriteReg(0x89, 0xe8);
WriteReg(0x13, 0xe0);
WriteReg(0x00, 0x00);
WriteReg(0x10, 0x00);
WriteReg(0x0d, 0x00);
WriteReg(0x14, 0x28);
WriteReg(0xa5, 0x05);
WriteReg(0xab, 0x07);
WriteReg(0x24, 0x75);
WriteReg(0x25, 0x63);
WriteReg(0x26, 0xA5);
WriteReg(0x9f, 0x78);
WriteReg(0xa0, 0x68);
WriteReg(0xa1, 0x03);
WriteReg(0xa6, 0xdf);
WriteReg(0xa7, 0xdf);
WriteReg(0xa8, 0xf0);
WriteReg(0xa9, 0x90);
WriteReg(0xaa, 0x94);
WriteReg(0x13, 0xe5);
WriteReg(0x0e, 0x61);
WriteReg(0x0f, 0x4b);
WriteReg(0x16, 0x02);
WriteReg(0x21, 0x02);
WriteReg(0x22, 0x91);
WriteReg(0x29, 0x07);
WriteReg(0x33, 0x0b);
WriteReg(0x35, 0x0b);
WriteReg(0x37, 0x1d);
WriteReg(0x38, 0x71);
WriteReg(0x39, 0x2a);
WriteReg(0x3c, 0x78);
WriteReg(0x4d, 0x40);
WriteReg(0x4e, 0x20);
WriteReg(0x69, 0x00);
WriteReg(0x6b, 0x00);
WriteReg(0x74, 0x19);
WriteReg(0x8d, 0x4f);
WriteReg(0x8e, 0x00);
WriteReg(0x8f, 0x00);
WriteReg(0x90, 0x00);
WriteReg(0x91, 0x00);
WriteReg(0x92, 0x00);
WriteReg(0x96, 0x00);
WriteReg(0x9a, 0x80);
WriteReg(0xb0, 0x84);
WriteReg(0xb1, 0x0c);
WriteReg(0xb2, 0x0e);
WriteReg(0xb3, 0x82);
WriteReg(0xb8, 0x0a);
WriteReg(0x43, 0x14);
WriteReg(0x44, 0xf0);
WriteReg(0x45, 0x34);
WriteReg(0x46, 0x58);
WriteReg(0x47, 0x28);
WriteReg(0x48, 0x3a);
WriteReg(0x59, 0x88);
WriteReg(0x5a, 0x88);
WriteReg(0x5b, 0x44);
WriteReg(0x5c, 0x67);
WriteReg(0x5d, 0x49);
WriteReg(0x5e, 0x0e);
WriteReg(0x64, 0x04);
WriteReg(0x65, 0x20);
WriteReg(0x66, 0x05);
WriteReg(0x94, 0x04);
WriteReg(0x95, 0x08);
WriteReg(0x6c, 0x0a);
WriteReg(0x6d, 0x55);
WriteReg(0x6e, 0x11);
WriteReg(0x6f, 0x9f);
WriteReg(0x6a, 0x40);
WriteReg(0x01, 0x40);
WriteReg(0x02, 0x40);
WriteReg(0x13, 0xe7);
WriteReg(0x15, 0x02);
WriteReg(0x4f, 0x80);
WriteReg(0x50, 0x80);
WriteReg(0x51, 0x00);
WriteReg(0x52, 0x22);
WriteReg(0x53, 0x5e);
WriteReg(0x54, 0x80);
WriteReg(0x58, 0x9e);
WriteReg(0x41, 0x08);
WriteReg(0x3f, 0x00);
WriteReg(0x75, 0x05);
WriteReg(0x76, 0xe1);
WriteReg(0x4c, 0x00);
WriteReg(0x77, 0x01);
WriteReg(0x3d, 0xc2);
WriteReg(0x4b, 0x09);
WriteReg(0xc9, 0x60);
WriteReg(0x41, 0x38);
WriteReg(0x56, 0x40);
WriteReg(0x34, 0x11);
WriteReg(0x3b, 0x02);
WriteReg(0xa4, 0x89);
WriteReg(0x96, 0x00);
WriteReg(0x97, 0x30);
WriteReg(0x98, 0x20);
WriteReg(0x99, 0x30);
WriteReg(0x9a, 0x84);
WriteReg(0x9b, 0x29);
WriteReg(0x9c, 0x03);
WriteReg(0x9d, 0x4c);
WriteReg(0x9e, 0x3f);
WriteReg(0x78, 0x04);
WriteReg(0x79, 0x01);
WriteReg(0xc8, 0xf0);
WriteReg(0x79, 0x0f);
WriteReg(0xc8, 0x00);
WriteReg(0x79, 0x10);
WriteReg(0xc8, 0x7e);
WriteReg(0x79, 0x0a);
WriteReg(0xc8, 0x80);
WriteReg(0x79, 0x0b);
WriteReg(0xc8, 0x01);
WriteReg(0x79, 0x0c);
WriteReg(0xc8, 0x0f);
WriteReg(0x79, 0x0d);
WriteReg(0xc8, 0x20);
WriteReg(0x79, 0x09);
WriteReg(0xc8, 0x80);
WriteReg(0x79, 0x02);
WriteReg(0xc8, 0xc0);
WriteReg(0x79, 0x03);
WriteReg(0xc8, 0x40);
WriteReg(0x79, 0x05);
WriteReg(0xc8, 0x30);
WriteReg(0x79, 0x26);
WriteReg(0x09, 0x03);
WriteReg(0x3b, 0x42);
}
if(SIZEX==160) {
WriteReg(REG_COM7,0x04) ;
WriteReg(REG_COM3,0x04) ;
WriteReg(REG_COM14, 0x1a);
WriteReg(SCALING_DCWCTR,0x22);
WriteReg(SCALING_PCLK_DIV,0xf2);
WriteReg(SCALING_PCLK_DELAY,0x02);
}
WriteReg(REG_COM1,0x0) ;
WriteReg(REG_COM8,0xc7) ;
WriteReg(REG_COM9,0x7a) ;
WriteReg(REG_COM10,0x2) ;
WriteReg(REG_COM11,0x10) ;//1A //0x90
WriteReg(REG_COM13, 0x88);
WriteReg(REG_COM15, 0xd0); // Set RGB 565?
WriteReg(REG_EDGE,0x04) ;
WriteReg(REG_RGB444, 0x00); // Disable RGB 444?
// WriteReg(REG_TSLB,0x05);//Forza YUV
/////////
WriteReg(REG_MVFP,0x27) ;
/*
WriteReg( REG_COM5, 0x61 ); WriteReg( REG_COM6, 0x4b );
WriteReg( 0x16, 0x02 );
WriteReg( 0x21, 0x02 ); WriteReg( 0x22, 0x91 );
WriteReg( 0x29, 0x07 ); WriteReg( 0x33, 0x0b );
WriteReg( 0x35, 0x0b ); WriteReg( 0x37, 0x1d );
WriteReg( 0x38, 0x71 ); WriteReg( 0x39, 0x2a );
WriteReg( REG_COM12, 0x78 ); WriteReg( 0x4d, 0x40 );
WriteReg( 0x4e, 0x20 ); WriteReg( REG_GFIX, 0 );
WriteReg( 0x6b, 0x4a ); WriteReg( 0x74, 0x10 );
WriteReg( 0x8d, 0x4f ); WriteReg( 0x8e, 0 );
WriteReg( 0x8f, 0 ); WriteReg( 0x90, 0 );
WriteReg( 0x91, 0 ); WriteReg( 0x96, 0 );
WriteReg( 0x9a, 0 ); WriteReg( 0xb0, 0x84 );
WriteReg( 0xb1, 0x0c ); WriteReg( 0xb2, 0x0e );
WriteReg( 0xb3, 0x82 ); WriteReg( 0xb8, 0x0a );
*/
/*
// COLOR SETTING
WriteReg(0x4f,0x80);
WriteReg(0x50,0x80);
WriteReg(0x51,0x00);
WriteReg(0x52,0x22);
WriteReg(0x53,0x5e);
WriteReg(0x54,0x80);
WriteReg(0x56,0x40);
WriteReg(0x58,0x9e);
WriteReg(0x59,0x88);
WriteReg(0x5a,0x88);
WriteReg(0x5b,0x44);
WriteReg(0x5c,0x67);
WriteReg(0x5d,0x49);
WriteReg(0x5e,0x0e);
WriteReg(0x69,0x00);
WriteReg(0x6a,0x40);
WriteReg(0x6b,0x0a);
WriteReg(0x6c,0x0a);
WriteReg(0x6d,0x55);
WriteReg(0x6e,0x11);
WriteReg(0x6f,0x9f);
WriteReg(0xb0,0x84);
//////////
*/
/*
WriteReg(0x7a, 0x20);
WriteReg(0x7b, 0x1c);
WriteReg(0x7c, 0x28);
WriteReg(0x7d, 0x3c);
WriteReg(0x7e, 0x5a);
WriteReg(0x7f, 0x68);
WriteReg(0x80, 0x76);
WriteReg(0x81, 0x80);
WriteReg(0x82, 0x88);
WriteReg(0x83, 0x8f);
WriteReg(0x84, 0x96);
WriteReg(0x85, 0xa3);
WriteReg(0x86, 0xaf);
WriteReg(0x87, 0xc4);
WriteReg(0x88, 0xd7);
WriteReg(0x89, 0xe8);
WriteReg(0x13, 0xe0);
WriteReg(0x00, 0x00);
WriteReg(0x10, 0x00);
WriteReg(0x0d, 0x40);
WriteReg(0x14, 0x18);
WriteReg(0xa5, 0x05);
WriteReg(0xab, 0x07);
WriteReg(0x24, 0x95);
WriteReg(0x25, 0x33);
WriteReg(0x26, 0xe3);
WriteReg(0x9f, 0x78);
WriteReg(0xa0, 0x68);
WriteReg(0xa1, 0x03);
WriteReg(0xa6, 0xd8);
WriteReg(0xa7, 0xd8);
WriteReg(0xa8, 0xf0);
WriteReg(0xa9, 0x90);
WriteReg(0xaa, 0x94);
WriteReg(0x13, 0xe5);
WriteReg(0x0e, 0x61);
WriteReg(0x0f, 0x4b);
WriteReg(0x16, 0x02);
WriteReg(0x21, 0x02);
WriteReg(0x22, 0x91);
WriteReg(0x29, 0x07);
WriteReg(0x33, 0x0b);
WriteReg(0x35, 0x0b);
WriteReg(0x37, 0x1d);
WriteReg(0x38, 0x71);
WriteReg(0x39, 0x2a);
WriteReg(0x3c, 0x78);
WriteReg(0x4d, 0x40);
WriteReg(0x4e, 0x20);
WriteReg(0x69, 0x00);
WriteReg(0x74, 0x10);
WriteReg(0x8d, 0x4f);
WriteReg(0x8e, 0x00);
WriteReg(0x8f, 0x00);
WriteReg(0x90, 0x00);
WriteReg(0x91, 0x00);
WriteReg(0x92, 0x00);
WriteReg(0x93, 0x00);
WriteReg(0x96, 0x00);
WriteReg(0x9a, 0x80);
WriteReg(0xb0, 0x84);
WriteReg(0xb1, 0x0c);
WriteReg(0xb2, 0x0e);
WriteReg(0xb3, 0x82);
WriteReg(0xb8, 0x0a);
WriteReg(0x43, 0x0a);
WriteReg(0x44, 0xf0);
WriteReg(0x45, 0x34);
WriteReg(0x46, 0x58);
WriteReg(0x47, 0x28);
WriteReg(0x48, 0x3a);
WriteReg(0x59, 0x88);
WriteReg(0x5a, 0x88);
WriteReg(0x5b, 0x44);
WriteReg(0x5c, 0x67);
WriteReg(0x5d, 0x49);
WriteReg(0x5e, 0x0e);
WriteReg(0x64, 0x04);
WriteReg(0x65, 0x20);
WriteReg(0x66, 0x05);
WriteReg(0x94, 0x04);
WriteReg(0x95, 0x08);
WriteReg(0x6c, 0x0a);
WriteReg(0x6d, 0x55);
WriteReg(0x6e, 0x11);
WriteReg(0x6f, 0x9f);
WriteReg(0x6a, 0x40);
WriteReg(0x01, 0x40);
WriteReg(0x02, 0x40);
WriteReg(0x13, 0xe7);
// WriteReg(0x15, 0x02);
WriteReg(0x4f, 0xb3);
WriteReg(0x50, 0xb3);
WriteReg(0x51, 0x00);
WriteReg(0x52, 0x3d);
WriteReg(0x53, 0xa7);
WriteReg(0x54, 0xe4);
WriteReg(0x58, 0x9e);
WriteReg(0x41, 0x08);
WriteReg(0x3f, 0x00);
WriteReg(0x75, 0x05);
WriteReg(0x76, 0xe1);
WriteReg(0x4c, 0x00);
WriteReg(0x77, 0x01);
// WriteReg(0x3d, 0xc1);
WriteReg(0x4b, 0x09);
WriteReg(0xc9, 0x60);
WriteReg(0x41, 0x38);
WriteReg(0x56, 0x40);
WriteReg(0x34, 0x11);
WriteReg(0x3b, 0x02);
WriteReg(0xa4, 0x88);
WriteReg(0x96, 0x00);
WriteReg(0x97, 0x30);
WriteReg(0x98, 0x20);
WriteReg(0x99, 0x30);
WriteReg(0x9a, 0x84);
WriteReg(0x9b, 0x29);
WriteReg(0x9c, 0x03);
WriteReg(0x9d, 0x4c);
WriteReg(0x9e, 0x3f);
WriteReg(0x78, 0x04);
WriteReg(0x79, 0x01);
WriteReg(0xc8, 0xf0);
WriteReg(0x79, 0x0f);
WriteReg(0xc8, 0x00);
WriteReg(0x79, 0x10);
WriteReg(0xc8, 0x7e);
WriteReg(0x79, 0x0a);
WriteReg(0xc8, 0x80);
WriteReg(0x79, 0x0b);
WriteReg(0xc8, 0x01);
WriteReg(0x79, 0x0c);
WriteReg(0xc8, 0x0f);
WriteReg(0x79, 0x0d);
WriteReg(0xc8, 0x20);
WriteReg(0x79, 0x09);
WriteReg(0xc8, 0x80);
WriteReg(0x79, 0x02);
WriteReg(0xc8, 0xc0);
WriteReg(0x79, 0x03);
WriteReg(0xc8, 0x40);
WriteReg(0x79, 0x05);
WriteReg(0xc8, 0x30);
WriteReg(0x79, 0x26);
WriteReg(0x09, 0x03);
WriteReg(0x3b, 0x42);
/////////////
*/
/*
WriteReg(0x4f, 0x80);
WriteReg(0x50, 0x80);
WriteReg(0x51, 0x00);
WriteReg(0x52, 0x22);
WriteReg(0x53, 0x5e);
WriteReg(0x54, 0x80);
*/
/*
WriteReg( REG_COM9, 0x38 );
WriteReg( 0x4f, 0xb3 );
WriteReg( 0x50, 0xb3 );
WriteReg( 0x51, 0 );
WriteReg( 0x52, 0x3d );
WriteReg( 0x53, 0xa7);
WriteReg( 0x54, 0xe4 );
WriteReg( REG_COM13, COM13_GAMMA|COM13_UVSAT );
*/
// WriteReg( REG_COM13, COM13_GAMMA|COM13_UVSAT );
//WriteReg(REG_COM8,0x8f) ;
// WriteReg(REG_COM7,0x04) ;
// WriteReg(REG_CLKRC,0x80);
WriteReg(0xff, 0xff); /* END MARKER */
printf("Init\n");
}
// vsync handler
void OV7670::VsyncHandler(void)
{
// Capture Enable
if (CaptureReq) {
wen = 1 ;
Done = false ;
CaptureReq = false ;
} else {
wen = 0 ;
if (Busy) {
Busy = false ;
Done = true ;
}
}
// Hline Counter
LastLines = LineCounter ;
LineCounter = 0 ;
}
// Data Read
int OV7670::ReadOneByte(void)
{
int b1;
rclk = 1;
// result = dataP;
/* result= ((result&0x0f)|(((result)& 0xf00)>>4))&0xff;
// int top=((result&0x01) << 7) | ((result&0x02) << 5) | ((result&0x04) << 3) | ((result&0x08) << 1) | ((result&0x10) >>1) | ((result&0x20) <<3) | ((result&0x40) >>5) | ((result&0x80) >>7);
int top=((result&0x01) << 7) | ((result&0x02) << 5) | ((result&0x04) << 3) | ((result&0x08) << 1)
| ((result&0x10) >>1) | ((result&0x20) <<3) | ((result&0x40) >>5) | ((result&0x80) >>7);
*/
/*
int r,r1,r2;
rclk = 1 ;
r = dataP ;
rclk = 0 ;
r1 = r & 0x07800000 ;
r1 = r1 >> (26-7-0) ; // bit26 to bit7
r2 = r & 0x00078000 ;
r2 = r2 >> (18-3-0) ; // bit18 to bit3
return r1+r2;
*/
b1=(((dataP&0x07800000)>>19)|((dataP&0x078000)>>15));
rclk = 0;
return b1;
}
int OV7670::ReadOneWord(void)
{
int r,r1,r2,r3,r4 ;
rclk = 1 ;
r = dataP ;
rclk = 0 ;
r1 = r & 0x07800000 ;
r1 = r1 >> (26-7-0) ; // bit26 to bit7
r2 = r & 0x00078000 ;
r2 = r2 >> (18-3-0) ; // bit18 to bit3
rclk = 1 ;
r = dataP ;
rclk = 0 ;
r3 = r & 0x07800000 ;
r3 = r3 >> (26-7-8) ; // bit26 to bit7
r4 = r & 0x00078000 ;
r4 = r4 >> (18-3-8) ; // bit18 to bit3
return r4+r3+r2+r1 ;
}
// Data Start
void OV7670::ReadStart(void)
{
rrst = 0 ;
oe = 0 ;
wait_us(1) ;
rclk = 0 ;
wait_us(1) ;
rclk = 1 ;
wait_us(1) ;
rrst = 1 ;
}
// Data Stop
void OV7670::ReadStop(void)
{
oe = 1 ;
ReadOneByte() ;
rclk = 1 ;
}