fuyuno sakura
OV7670 with FIFO AL422B (TORAGI Camera TYPE B) test program
Revision 0:d69a19a5c0ff, committed 2012-02-14
- Comitter:
- mio
- Date:
- Tue Feb 14 13:25:25 2012 +0000
- Commit message:
- First Version
Changed in this revision
diff -r 000000000000 -r d69a19a5c0ff main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Feb 14 13:25:25 2012 +0000
@@ -0,0 +1,76 @@
+//
+// OV7670 + FIFO AL422B camera board test
+//
+#include "mbed.h"
+#include "ov7670.h"
+
+OV7670 camera(
+ p28,p27, // SDA,SCL(I2C / SCCB)
+ p21,p22,p20, // VSYNC,HREF,WEN(FIFO)
+ p19,p18,p17,p16,p15,p14,p13,p12, // D7-D0
+ p23,p24,p25) ; // RRST,OE,RCLK
+
+Serial pc(USBTX,USBRX) ;
+
+#define SIZEX (160)
+#define SIZEY (120)
+
+int main() {
+ int i ;
+ pc.baud(115200) ;
+ pc.printf("Camera resetting..\r\n") ;
+
+ camera.Reset() ;
+
+ pc.printf("Before Init...\r\n") ;
+ pc.printf("AD : +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F") ;
+ for (i=0;i<OV7670_REGMAX;i++) {
+ int data ;
+ data = camera.ReadReg(i) ; // READ REG
+ if ((i & 0x0F) == 0) {
+ pc.printf("\r\n%02X : ",i) ;
+ }
+ pc.printf("%02X ",data) ;
+ }
+ pc.printf("\r\n") ;
+
+ camera.InitQQVGA() ;
+
+ pc.printf("After Init...\r\n") ;
+ pc.printf("AD : +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F") ;
+ for (i=0;i<OV7670_REGMAX;i++) {
+ int data ;
+ data = camera.ReadReg(i) ; // READ REG
+ if ((i & 0x0F) == 0) {
+ pc.printf("\r\n%02X : ",i) ;
+ }
+ pc.printf("%02X ",data) ;
+ }
+ pc.printf("\r\n") ;
+
+ // CAPTURE and SEND LOOP
+ while(1)
+ {
+ pc.printf("Hit Any Key to send RGBx160x120 Capture Data.\r\n") ;
+ while(!pc.readable()) ;
+ pc.getc() ;
+ camera.CaptureNext() ;
+ while(camera.CaptureDone() == false) ;
+ pc.printf("*\r\n") ;
+ camera.ReadStart() ;
+ i = 0 ;
+ for (int y = 0;y < SIZEY;y++) {
+ int r,g,b,d1,d2 ;
+ for (int x = 0;x < SIZEX;x++) {
+ d1 = camera.ReadOneByte() ; // upper nibble is XXX , lower nibble is B
+ d2 = camera.ReadOneByte() ; // upper nibble is G , lower nibble is R
+ b = (d1 & 0x0F) ;
+ g = (d2 & 0xF0) >> 4 ;
+ r = (d2 & 0x0F) ;
+ pc.printf ("%1X%1X%1X",r,g,b) ;
+ }
+ pc.printf("\r\n") ;
+ }
+ camera.ReadStop() ;
+ }
+}
diff -r 000000000000 -r d69a19a5c0ff mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Feb 14 13:25:25 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/14f4805c468c
diff -r 000000000000 -r d69a19a5c0ff ov7670.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ov7670.h Tue Feb 14 13:25:25 2012 +0000
@@ -0,0 +1,228 @@
+#include "mbed.h"
+#include "ov7670reg.h"
+
+#define OV7670_WRITE (0x42)
+#define OV7670_READ (0x43)
+#define OV7670_WRITEWAIT (20)
+#define OV7670_NOACK (0)
+#define OV7670_REGMAX (201)
+#define OV7670_I2CFREQ (50000)
+
+//
+// OV7670 + FIFO AL422B camera board test
+//
+class OV7670 : public Base
+{
+public:
+ I2C camera ;
+ InterruptIn vsync,href;
+ DigitalOut wen ;
+ BusIn data ;
+ DigitalOut rrst,oe,rclk ;
+ volatile int LineCounter ;
+ volatile int LastLines ;
+ volatile bool CaptureReq ;
+ volatile bool Busy ;
+ volatile bool Done ;
+
+ OV7670(
+ PinName sda,// Camera I2C port
+ PinName scl,// Camera I2C port
+ PinName vs, // VSYNC
+ PinName hr, // HREF
+ PinName we, // WEN
+ PinName d7, // D7
+ PinName d6, // D6
+ PinName d5, // D5
+ PinName d4, // D4
+ PinName d3, // D3
+ PinName d2, // D2
+ PinName d1, // D1
+ PinName d0, // D0
+ PinName rt, // /RRST
+ PinName o, // /OE
+ PinName rc // RCLK
+ ) : camera(sda,scl),vsync(vs),href(hr),wen(we),data(d0,d1,d2,d3,d4,d5,d6,d7),rrst(rt),oe(o),rclk(rc)
+ {
+ camera.stop() ;
+ camera.frequency(OV7670_I2CFREQ) ;
+ vsync.fall(this,&OV7670::VsyncHandler) ;
+ href.rise(this,&OV7670::HrefHandler) ;
+ CaptureReq = false ;
+ Busy = false ;
+ Done = false ;
+ LineCounter = 0 ;
+ rrst = 1 ;
+ oe = 1 ;
+ rclk = 1 ;
+ wen = 0 ;
+ }
+
+ // capture request
+ void CaptureNext(void)
+ {
+ CaptureReq = true ;
+ Busy = true ;
+ }
+
+ // capture done? (with clear)
+ bool CaptureDone(void)
+ {
+ bool result ;
+ if (Busy) {
+ result = false ;
+ } else {
+ result = Done ;
+ Done = false ;
+ }
+ return result ;
+ }
+
+ // write to camera
+ void WriteReg(int addr,int data)
+ {
+ // WRITE 0x42,ADDR,DATA
+ 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
+ int ReadReg(int addr)
+ {
+ 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 Reset(void) {
+ WriteReg(0x12,0x80) ; // RESET CAMERA
+ wait_ms(200) ;
+ }
+
+ void InitQQVGA() {
+ // QQVGA RGB444
+ WriteReg(REG_CLKRC,0x80);
+ WriteReg(REG_COM11,0x0A) ;
+ WriteReg(REG_TSLB,0x04);
+ WriteReg(REG_COM7,0x04) ;
+ WriteReg(REG_RGB444, 0x02);
+ WriteReg(REG_COM15, 0xd0);
+ 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_COM3, 0x04);
+ WriteReg(REG_COM14, 0x1a);
+ WriteReg(0x72, 0x22);
+ WriteReg(0x73, 0xf2);
+
+ // 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);
+ }
+
+
+
+ // vsync handler
+ void 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 ;
+ }
+
+ // href handler
+ void HrefHandler(void)
+ {
+ LineCounter++ ;
+ }
+
+ // Data Read
+ int ReadOneByte(void)
+ {
+ int result ;
+ rclk = 1 ;
+// wait_us(1) ;
+ result = data ;
+ rclk = 0 ;
+ return result ;
+ }
+
+ // Data Start
+ void ReadStart(void)
+ {
+ rrst = 0 ;
+ oe = 0 ;
+ wait_us(1) ;
+ rclk = 0 ;
+ wait_us(1) ;
+ rclk = 1 ;
+ wait_us(1) ;
+ rrst = 1 ;
+ }
+
+ // Data Stop
+ void ReadStop(void)
+ {
+ oe = 1 ;
+ ReadOneByte() ;
+ rclk = 1 ;
+ }
+};
diff -r 000000000000 -r d69a19a5c0ff ov7670reg.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ov7670reg.h Tue Feb 14 13:25:25 2012 +0000 @@ -0,0 +1,116 @@ +#define REG_GAIN 0x00 /* Gain lower 8 bits (rest in vref) */ +#define REG_BLUE 0x01 /* blue gain */ +#define REG_RED 0x02 /* red gain */ +#define REG_VREF 0x03 /* Pieces of GAIN, VSTART, VSTOP */ +#define REG_COM1 0x04 /* Control 1 */ +#define COM1_CCIR656 0x40 /* CCIR656 enable */ +#define REG_BAVE 0x05 /* U/B Average level */ +#define REG_GbAVE 0x06 /* Y/Gb Average level */ +#define REG_AECHH 0x07 /* AEC MS 5 bits */ +#define REG_RAVE 0x08 /* V/R Average level */ +#define REG_COM2 0x09 /* Control 2 */ +#define COM2_SSLEEP 0x10 /* Soft sleep mode */ +#define REG_PID 0x0a /* Product ID MSB */ +#define REG_VER 0x0b /* Product ID LSB */ +#define REG_COM3 0x0c /* Control 3 */ +#define COM3_SWAP 0x40 /* Byte swap */ +#define COM3_SCALEEN 0x08 /* Enable scaling */ +#define COM3_DCWEN 0x04 /* Enable downsamp/crop/window */ +#define REG_COM4 0x0d /* Control 4 */ +#define REG_COM5 0x0e /* All "reserved" */ +#define REG_COM6 0x0f /* Control 6 */ +#define REG_AECH 0x10 /* More bits of AEC value */ +#define REG_CLKRC 0x11 /* Clocl control */ +#define CLK_EXT 0x40 /* Use external clock directly */ +#define CLK_SCALE 0x3f /* Mask for internal clock scale */ +#define REG_COM7 0x12 /* Control 7 */ +#define COM7_RESET 0x80 /* Register reset */ +#define COM7_FMT_MASK 0x38 +#define COM7_FMT_VGA 0x00 +#define COM7_FMT_CIF 0x20 /* CIF format */ +#define COM7_FMT_QVGA 0x10 /* QVGA format */ +#define COM7_FMT_QCIF 0x08 /* QCIF format */ +#define COM7_RGB 0x04 /* bits 0 and 2 - RGB format */ +#define COM7_YUV 0x00 /* YUV */ +#define COM7_BAYER 0x01 /* Bayer format */ +#define COM7_PBAYER 0x05 /* "Processed bayer" */ +#define REG_COM8 0x13 /* Control 8 */ +#define COM8_FASTAEC 0x80 /* Enable fast AGC/AEC */ +#define COM8_AECSTEP 0x40 /* Unlimited AEC step size */ +#define COM8_BFILT 0x20 /* Band filter enable */ +#define COM8_AGC 0x04 /* Auto gain enable */ +#define COM8_AWB 0x02 /* White balance enable */ +#define COM8_AEC 0x01 /* Auto exposure enable */ +#define REG_COM9 0x14 /* Control 9 - gain ceiling */ +#define REG_COM10 0x15 /* Control 10 */ +#define COM10_HSYNC 0x40 /* HSYNC instead of HREF */ +#define COM10_PCLK_HB 0x20 /* Suppress PCLK on horiz blank */ +#define COM10_HREF_REV 0x08 /* Reverse HREF */ +#define COM10_VS_LEAD 0x04 /* VSYNC on clock leading edge */ +#define COM10_VS_NEG 0x02 /* VSYNC negative */ +#define COM10_HS_NEG 0x01 /* HSYNC negative */ +#define REG_HSTART 0x17 /* Horiz start high bits */ +#define REG_HSTOP 0x18 /* Horiz stop high bits */ +#define REG_VSTART 0x19 /* Vert start high bits */ +#define REG_VSTOP 0x1a /* Vert stop high bits */ +#define REG_PSHFT 0x1b /* Pixel delay after HREF */ +#define REG_MIDH 0x1c /* Manuf. ID high */ +#define REG_MIDL 0x1d /* Manuf. ID low */ +#define REG_MVFP 0x1e /* Mirror / vflip */ +#define MVFP_MIRROR 0x20 /* Mirror image */ +#define MVFP_FLIP 0x10 /* Vertical flip */ +#define REG_AEW 0x24 /* AGC upper limit */ +#define REG_AEB 0x25 /* AGC lower limit */ +#define REG_VPT 0x26 /* AGC/AEC fast mode op region */ +#define REG_HSYST 0x30 /* HSYNC rising edge delay */ +#define REG_HSYEN 0x31 /* HSYNC falling edge delay */ +#define REG_HREF 0x32 /* HREF pieces */ +#define REG_TSLB 0x3a /* lots of stuff */ +#define TSLB_YLAST 0x04 /* UYVY or VYUY - see com13 */ +#define REG_COM11 0x3b /* Control 11 */ +#define COM11_NIGHT 0x80 /* NIght mode enable */ +#define COM11_NMFR 0x60 /* Two bit NM frame rate */ +#define COM11_HZAUTO 0x10 /* Auto detect 50/60 Hz */ +#define COM11_50HZ 0x08 /* Manual 50Hz select */ +#define COM11_EXP 0x02 +#define REG_COM12 0x3c /* Control 12 */ +#define COM12_HREF 0x80 /* HREF always */ +#define REG_COM13 0x3d /* Control 13 */ +#define COM13_GAMMA 0x80 /* Gamma enable */ +#define COM13_UVSAT 0x40 /* UV saturation auto adjustment */ +#define COM13_UVSWAP 0x01 /* V before U - w/TSLB */ +#define REG_COM14 0x3e /* Control 14 */ +#define COM14_DCWEN 0x10 /* DCW/PCLK-scale enable */ +#define REG_EDGE 0x3f /* Edge enhancement factor */ +#define REG_COM15 0x40 /* Control 15 */ +#define COM15_R10F0 0x00 /* Data range 10 to F0 */ +#define COM15_R01FE 0x80 /* 01 to FE */ +#define COM15_R00FF 0xc0 /* 00 to FF */ +#define COM15_RGB565 0x10 /* RGB565 output */ +#define COM15_RGB555 0x30 /* RGB555 output */ +#define REG_COM16 0x41 /* Control 16 */ +#define COM16_AWBGAIN 0x08 /* AWB gain enable */ +#define REG_COM17 0x42 /* Control 17 */ +#define COM17_AECWIN 0xc0 /* AEC window - must match COM4 */ +#define COM17_CBAR 0x08 /* DSP Color bar */ +#define REG_CMATRIX_BASE 0x4f +#define CMATRIX_LEN 6 +#define REG_CMATRIX_SIGN 0x58 +#define REG_BRIGHT 0x55 /* Brightness */ +#define REG_CONTRAS 0x56 /* Contrast control */ +#define REG_GFIX 0x69 /* Fix gain control */ +#define REG_REG76 0x76 /* OV's name */ +#define R76_BLKPCOR 0x80 /* Black pixel correction enable */ +#define R76_WHTPCOR 0x40 /* White pixel correction enable */ +#define REG_RGB444 0x8c /* RGB 444 control */ +#define R444_ENABLE 0x02 /* Turn on RGB444, overrides 5x5 */ +#define R444_RGBX 0x01 /* Empty nibble at end */ +#define REG_HAECC1 0x9f /* Hist AEC/AGC control 1 */ +#define REG_HAECC2 0xa0 /* Hist AEC/AGC control 2 */ +#define REG_BD50MAX 0xa5 /* 50hz banding step limit */ +#define REG_HAECC3 0xa6 /* Hist AEC/AGC control 3 */ +#define REG_HAECC4 0xa7 /* Hist AEC/AGC control 4 */ +#define REG_HAECC5 0xa8 /* Hist AEC/AGC control 5 */ +#define REG_HAECC6 0xa9 /* Hist AEC/AGC control 6 */ +#define REG_HAECC7 0xaa /* Hist AEC/AGC control 7 */ +#define REG_BD60MAX 0xab /* 60hz banding step limit */