angelo mottolese
ov7670 FIFO from Edoardo De Marchi
Dependents: 3D_Scanner_OV7670_
Fork of
OV7670 with FIFO
by 
angelo mottolese
Diff: OV7670.cpp
- Revision:
- 0:101fbacf126f
- Child:
- 1:f5f5d7c979cf
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/OV7670.cpp Wed Nov 16 10:37:49 2016 +0000
@@ -0,0 +1,386 @@
+#include "mbed.h"
+#include "ov7670reg.h"
+#include "OV7670.h"
+
+ // capture request
+ void OV7670::CaptureNext(void)
+ {
+ CaptureReq = true ;
+ Busy = true ;
+ printf("CaptReq\n");
+ }
+
+ // 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(0x12,0x80) ; // RESET CAMERA
+ wait_ms(200) ;
+ printf("Reset\n");
+ }
+
+ void OV7670::InitQQVGA(void)
+ {
+ /*
+ //WriteReg(REG_COM7,0x80) ;
+ WriteReg(REG_CLKRC,0x80);
+ WriteReg(REG_COM11,0x1A) ;
+ WriteReg(REG_TSLB,0x04);
+ WriteReg(REG_TSLB,0x04);
+ WriteReg(REG_COM3,0x04) ;
+ WriteReg(REG_COM7,0x07) ;
+ WriteReg(REG_COM8,0x87) ;
+ //WriteReg(REG_RGB444, 0x00);
+ //WriteReg(REG_RGB444, 0x00); // Disable RGB 444?
+ WriteReg(REG_COM15, 0xD0); // Set RGB 565?
+*/
+
+ WriteReg(REG_CLKRC,0x80);
+ WriteReg(REG_COM11,0x1A) ;
+ // WriteReg(REG_TSLB,0x04);
+ //WriteReg(REG_TSLB,0x04);
+ //WriteReg(REG_COM1,0x0) ;
+ WriteReg(REG_COM3,0x04) ;
+ WriteReg(REG_COM7,0x04) ;
+ WriteReg(REG_COM14, 0x1a);
+ WriteReg(SCALING_XSC, 0x3a);
+ WriteReg(SCALING_YSC, 0x35);
+ WriteReg(SCALING_DCWCTR,0x22);
+ WriteReg(SCALING_PCLK_DIV,0xf2);
+ WriteReg(SCALING_PCLK_DELAY,0x02);
+ WriteReg(REG_COM8,0x87) ;
+ // WriteReg(REG_RGB444, 0x02);
+ // WriteReg(REG_RGB444, 0x00); // Disable RGB 444?
+ WriteReg(REG_COM15, 0xD0); // Set RGB 565?
+
+ WriteReg(REG_HSTART,0x16) ;
+ WriteReg(REG_HSTOP,0x04) ;
+ WriteReg(REG_HREF,0x24) ;
+ WriteReg(REG_VSTART,0x02) ;
+ WriteReg(REG_VSTOP,0x7a) ;
+ WriteReg(REG_VREF,0x0a) ;
+ WriteReg(REG_COM10,0x02) ;
+ WriteReg(REG_MVFP,0x27) ;
+
+ // 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(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, 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, 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(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 result;
+ rclk = 1;
+ result = dataP;
+/*
+ // Shift the bits around to form the byte
+ int top = result >> 19; // Isolate the top nibble
+ int middle = result >> 2; // Isolate bits 2 & 3
+ result = result & 0x00000003; // Isolate bits 0 & 1
+ result += middle;
+ result += top;
+ */
+
+ //int middle= ((result)& 0xf00)>>4;
+ 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);
+
+ rclk = 0;
+ return top;
+ }
+
+ // 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 ;
+ }
\ No newline at end of file