I have a green square all the time, everything is connected correctly and reliably, but no matter what I do, I always get a green square. But what I noticed is that on pin 3 of the Arduino Uno (Chinese replica) I have 2.5V instead of 5V, so maybe there is some power missing. If you download any other code, all digital pins work correctly and produce about 5 volts. So the problem is probably in the code. I don't know how to solve it.
P. S. If I remove and reinsert the VSYNC port connector or briefly apply 3.3V to pin D3 (before the 680 ohm resistor), I get a Vsync notification, but not the camera image. I also tried to connect this pin without a voltage divider, but the result is the same: a green square without vsync notification and a maximum voltage of 2.5V. Even if nothing is connected, and only this code is loaded, the pin has only 2.5V.

How about to save a single image on a SD? I believe that Teensy 3.5 or 3.6 can do that (once ported as I see on Issue #12), but I wander if it is possible with an STM32.

So topic is the problem. I have movement sensor and I want to make camera starting the frame by interrupt from the sensor to get image immediately when moving sensor is triggered. So how can I reset that VSYNC timer from the program?

Hi, i have a doubt...

I was wondering if is possible to send multiple data over the serial (OV7670 Image and Sensors Data), right now i'm using a Json output, i was wondering if i might able to include the image on a json key and then extract it on my Raspberry PI and then save it,

Arduino: 1.8.16 (Windows 10), Board: "Arduino Uno"

In file included from C:\Users\XXXX\Documents\Arduino\libraries\Adafruit_GFX_Library\Adafruit_SPITFT.cpp:36:0:

C:\Users\XXXX\Documents\Arduino\libraries\Adafruit_GFX_Library\Adafruit_SPITFT.h:253:23: error: no members matching 'Adafruit_GFX::drawRGBBitmap' in 'class Adafruit_GFX'

using Adafruit_GFX::drawRGBBitmap; // Check base class first

                   ^~~~~~~~~~~~~

exit status 1

Error compiling for board Arduino Uno.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

I worked through the youtube tutorial and successfully got through all of the checkpoints. The camera was showing blurry images that were not clearly defined. Tried changing the UART and baud rates, but this didn't help, so I reverted to the original settings. However, when I tried pulling back up the arduImageCapture, it gave me a red square. I triple checked and the settings are exactly the same as they were when the camera was working. Can anyone help me understand why it isn't showing images anymore?

Ошибка
qualified-id in declaration before '(' token
при компиляции
sketch\Adafruit_ST7735_mod.cpp: In member function 'void Adafruit_ST7735_mod::setAddrWindow(uint8_t, uint8_t, uint8_t, uint8_t)':

Adafruit_ST7735_mod.cpp:365:42: error: qualified-id in declaration before '(' token

void Adafruit_ST7735_mod::startAddrWindow(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1) {

                                      ^

Adafruit_ST7735_mod.cpp:375:40: error: qualified-id in declaration before '(' token

void Adafruit_ST7735_mod::endAddrWindow() {

                                    ^

Adafruit_ST7735_mod.cpp:383:36: error: qualified-id in declaration before '(' token

void Adafruit_ST7735_mod::pushColor(uint16_t color) {

                                ^

Adafruit_ST7735_mod.cpp:399:36: error: qualified-id in declaration before '(' token

void Adafruit_ST7735_mod::drawPixel(int16_t x, int16_t y, uint16_t color) {

                                ^

Adafruit_ST7735_mod.cpp:421:40: error: qualified-id in declaration before '(' token

void Adafruit_ST7735_mod::drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color)

                                    ^

Adafruit_ST7735_mod.cpp:584:1: error: expected '}' at end of input

}

^

exit status 1
qualified-id in declaration before '(' token

TFT image Mirrored. Display is horizontally reversed.

DC - PIN 8 (5V -> 3.3V)
CS - PIN 9 (5V -> 3.3V)
RESET - PIN 10 (5V -> 3.3V)
SPI data - PIN 11 (5V -> 3.3V)
SPI clock - PIN 13 (5V -> 3.3V)
do i need connect these pins to shift level becasue i get white screen when use shift level
i get image when i don't use shift level when connect arduino and spi screen but my image not clear like your
can you help me?
sorry for my bad english

I cannot upload the code to my Arduino esp 8266 Wemos D1 R2. It showed error that many variables which was not declared in this scope. The details below:

D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In constructor 'Adafruit_ST7735_mod::Adafruit_ST7735_mod(int8_t, int8_t, int8_t, int8_t, int8_t)':
Adafruit_ST7735_mod.cpp:47:3: error: '_cs' was not declared in this scope; did you mean 'cs'?
47 | _cs = cs;
| ^~~
| cs
Adafruit_ST7735_mod.cpp:48:3: error: '_rs' was not declared in this scope; did you mean 'rs'?
48 | _rs = rs;
| ^~~
| rs
Adafruit_ST7735_mod.cpp:49:3: error: '_sid' was not declared in this scope; did you mean 'sid'?
49 | _sid = sid;
| ^~~~
| sid
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\LiveOV7670.ino: In function 'void setup()':
LiveOV7670:14:3: error: 'CLKPR' was not declared in this scope
14 | CLKPR = 0x80; // enter clock rate change mode
| ^~~~~
Adafruit_ST7735_mod.cpp:50:3: error: '_sclk' was not declared in this scope; did you mean 'sclk'?
50 | _sclk = sclk;
| ^~~~~
| sclk
Adafruit_ST7735_mod.cpp:51:3: error: '_rst' was not declared in this scope; did you mean 'rst'?
51 | _rst = rst;
| ^~~~
| rst
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In constructor 'Adafruit_ST7735_mod::Adafruit_ST7735_mod(int8_t, int8_t, int8_t)':
Adafruit_ST7735_mod.cpp:60:3: error: '_cs' was not declared in this scope; did you mean 'cs'?
60 | _cs = cs;
| ^~~
| cs
Adafruit_ST7735_mod.cpp:61:3: error: '_rs' was not declared in this scope; did you mean 'rs'?
61 | _rs = rs;
| ^~~
| rs
Adafruit_ST7735_mod.cpp:62:3: error: '_rst' was not declared in this scope; did you mean 'rst'?
62 | _rst = rst;
| ^~~~
| rst
Adafruit_ST7735_mod.cpp:64:3: error: '_sid' was not declared in this scope
64 | _sid = _sclk = 0;
| ^~~~
Adafruit_ST7735_mod.cpp:64:11: error: '_sclk' was not declared in this scope
64 | _sid = _sclk = 0;
| ^~~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In member function 'void Adafruit_ST7735_mod::spiwrite(uint8_t)':
Adafruit_ST7735_mod.cpp:93:20: error: 'dataport' was not declared in this scope
93 | if(c & bit) *dataport |= datapinmask;
| ^~~~~~~~
In file included from D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\ExampleUart.cpp:9:
C:\Users\trinh\OneDrive\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h: In member function 'void CameraOV7670::waitForVsync()':
C:\Users\trinh\OneDrive\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h:218:10: error: 'OV7670_VSYNC' was not declared in this scope
218 | while(!OV7670_VSYNC);
| ^~~~~~~~~~~~
Adafruit_ST7735_mod.cpp:93:33: error: 'datapinmask' was not declared in this scope
93 | if(c & bit) *dataport |= datapinmask;
| ^~~~~~~~~~~
C:\Users\trinh\OneDrive\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h: In member function 'void CameraOV7670::waitForPixelClockLow()':
C:\Users\trinh\OneDrive\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h:227:9: error: 'OV7670_PIXEL_CLOCK' was not declared in this scope
227 | while(OV7670_PIXEL_CLOCK);
| ^~~~~~~~~~~~~~~~~~
Adafruit_ST7735_mod.cpp:94:20: error: 'dataport' was not declared in this scope
94 | else *dataport &= ~datapinmask;
| ^~~~~~~~
C:\Users\trinh\OneDrive\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h: In member function 'void CameraOV7670::waitForPixelClockHigh()':
C:\Users\trinh\OneDrive\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h:231:10: error: 'OV7670_PIXEL_CLOCK' was not declared in this scope
231 | while(!OV7670_PIXEL_CLOCK);
| ^~~~~~~~~~~~~~~~~~
Adafruit_ST7735_mod.cpp:94:33: error: 'datapinmask' was not declared in this scope
94 | else *dataport &= ~datapinmask;
| ^~~~~~~~~~~
C:\Users\trinh\OneDrive\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h: In member function 'void CameraOV7670::ignoreHorizontalPaddingRight()':
C:\Users\trinh\OneDrive\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h:250:9: error: 'OV7670_PIXEL_CLOCK' was not declared in this scope
250 | while(OV7670_PIXEL_CLOCK) pixelTime++;
| ^~~~~~~~~~~~~~~~~~
Adafruit_ST7735_mod.cpp:95:8: error: 'clkport' was not declared in this scope
95 | *clkport |= clkpinmask;
| ^~~~~~~
C:\Users\trinh\OneDrive\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h:251:10: error: 'OV7670_PIXEL_CLOCK' was not declared in this scope
251 | while(!OV7670_PIXEL_CLOCK) pixelTime++;
| ^~~~~~~~~~~~~~~~~~
Adafruit_ST7735_mod.cpp:95:20: error: 'clkpinmask' was not declared in this scope
95 | *clkport |= clkpinmask;
| ^~~~~~~~~~
C:\Users\trinh\OneDrive\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h: In member function 'void CameraOV7670::readPixelByte(uint8_t&)':
C:\Users\trinh\OneDrive\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h:256:3: error: 'OV7670_READ_PIXEL_BYTE' was not declared in this scope
256 | OV7670_READ_PIXEL_BYTE(byte);
| ^~~~~~~~~~~~~~~~~~~~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In member function 'void Adafruit_ST7735_mod::writecommand(uint8_t)':
Adafruit_ST7735_mod.cpp:112:4: error: 'rsport' was not declared in this scope; did you mean 'ushort'?
112 | *rsport &= ~rspinmask;
| ^~~~~~
| ushort
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\ExampleUart.cpp: In function 'void sendBlankFrame(uint16_t)':
ExampleUart.cpp:310:7: error: 'UDR0' was not declared in this scope; did you mean 'D0'?
310 | UDR0 = formatRgbPixelByteH(colorH);
| ^~~~
| D0
Adafruit_ST7735_mod.cpp:112:15: error: 'rspinmask' was not declared in this scope
112 | *rsport &= ~rspinmask;
| ^~~~~~~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\ExampleUart.cpp: In function 'void processNextGrayscalePixelByteInBuffer()':
ExampleUart.cpp:379:5: error: 'UDR0' was not declared in this scope; did you mean 'D0'?
379 | UDR0 = *lineBufferSendByte;
| ^~~~
| D0
Adafruit_ST7735_mod.cpp:113:4: error: 'csport' was not declared in this scope; did you mean 'ushort'?
113 | *csport &= ~cspinmask;
| ^~~~~~
| ushort
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\ExampleUart.cpp: In function 'void processGrayscaleFrameDirect()':
ExampleUart.cpp:402:7: error: 'UDR0' was not declared in this scope; did you mean 'D0'?
402 | UDR0 = lineBuffer[0];
| ^~~~
| D0
Adafruit_ST7735_mod.cpp:113:15: error: 'cspinmask' was not declared in this scope
113 | *csport &= ~cspinmask;
| ^~~~~~~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\ExampleUart.cpp: In function 'void tryToSendNextRgbPixelByteInBuffer()':
ExampleUart.cpp:481:5: error: 'UDR0' was not declared in this scope; did you mean 'D0'?
481 | UDR0 = *lineBufferSendByte;
| ^~~~
| D0
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\ExampleUart.cpp: In function 'void processRgbFrameDirect()':
ExampleUart.cpp:515:7: error: 'UDR0' was not declared in this scope; did you mean 'D0'?
515 | UDR0 = lineBuffer[0];
| ^~~~
| D0
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In member function 'void Adafruit_ST7735_mod::writedata(uint8_t)':
Adafruit_ST7735_mod.cpp:129:4: error: 'rsport' was not declared in this scope; did you mean 'ushort'?
129 | *rsport |= rspinmask;
| ^~~~~~
| ushort
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\ExampleUart.cpp: In function 'void commandStartNewFrame(uint8_t)':
ExampleUart.cpp:564:3: error: 'UDR0' was not declared in this scope; did you mean 'D0'?
564 | UDR0 = 0x00; // New command
| ^~~~
| D0
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\ExampleUart.cpp: In function 'void commandDebugPrint(String)':
ExampleUart.cpp:587:5: error: 'UDR0' was not declared in this scope; did you mean 'D0'?
587 | UDR0 = 0x00; // New commnad
| ^~~~
| D0
Adafruit_ST7735_mod.cpp:129:15: error: 'rspinmask' was not declared in this scope
129 | *rsport |= rspinmask;
| ^~~~~~~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\ExampleUart.cpp: In function 'uint8_t sendNextCommandByte(uint8_t, uint8_t)':
ExampleUart.cpp:606:3: error: 'UDR0' was not declared in this scope; did you mean 'D0'?
606 | UDR0 = commandByte;
| ^~~~
| D0
Adafruit_ST7735_mod.cpp:130:4: error: 'csport' was not declared in this scope; did you mean 'ushort'?
130 | *csport &= ~cspinmask;
| ^~~~~~
| ushort
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\ExampleUart.cpp: In function 'bool isUartReady()':
ExampleUart.cpp:619:10: error: 'UCSR0A' was not declared in this scope
619 | return UCSR0A & (1<<UDRE0);
| ^~~~~~
ExampleUart.cpp:619:23: error: 'UDRE0' was not declared in this scope
619 | return UCSR0A & (1<<UDRE0);
| ^~~~~
Adafruit_ST7735_mod.cpp:130:15: error: 'cspinmask' was not declared in this scope
130 | csport &= ~cspinmask;
| ^~~~~~~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In member function 'void Adafruit_ST7735_mod::commonInit(const uint8_t)':
Adafruit_ST7735_mod.cpp:316:3: error: 'colstart' was not declared in this scope
316 | colstart = rowstart = 0; // May be overridden in init func
| ^~~~~~~~
Adafruit_ST7735_mod.cpp:316:15: error: 'rowstart' was not declared in this scope
316 | colstart = rowstart = 0; // May be overridden in init func
| ^~~~~~~~
Adafruit_ST7735_mod.cpp:318:11: error: '_rs' was not declared in this scope
318 | pinMode(_rs, OUTPUT);
| ^~~
Adafruit_ST7735_mod.cpp:319:11: error: '_cs' was not declared in this scope
319 | pinMode(_cs, OUTPUT);
| ^~~
Adafruit_ST7735_mod.cpp:320:3: error: 'csport' was not declared in this scope; did you mean 'ushort'?
320 | csport = portOutputRegister(digitalPinToPort(_cs));
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:321:3: error: 'rsport' was not declared in this scope; did you mean 'ushort'?
321 | rsport = portOutputRegister(digitalPinToPort(_rs));
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:322:3: error: 'cspinmask' was not declared in this scope
322 | cspinmask = digitalPinToBitMask(_cs);
| ^~~~~~~~~
Adafruit_ST7735_mod.cpp:323:3: error: 'rspinmask' was not declared in this scope
323 | rspinmask = digitalPinToBitMask(_rs);
| ^~~~~~~~~
Adafruit_ST7735_mod.cpp:343:13: error: '_sclk' was not declared in this scope
343 | pinMode(_sclk, OUTPUT);
| ^~~~~
Adafruit_ST7735_mod.cpp:344:13: error: '_sid' was not declared in this scope
344 | pinMode(_sid , OUTPUT);
| ^~~~
Adafruit_ST7735_mod.cpp:345:5: error: 'clkport' was not declared in this scope
345 | clkport = portOutputRegister(digitalPinToPort(_sclk));
| ^~~~~~~
Adafruit_ST7735_mod.cpp:346:5: error: 'dataport' was not declared in this scope
346 | dataport = portOutputRegister(digitalPinToPort(_sid));
| ^~~~~~~~
Adafruit_ST7735_mod.cpp:347:5: error: 'clkpinmask' was not declared in this scope
347 | clkpinmask = digitalPinToBitMask(_sclk);
| ^~~~~~~~~~
Adafruit_ST7735_mod.cpp:348:5: error: 'datapinmask' was not declared in this scope
348 | datapinmask = digitalPinToBitMask(_sid);
| ^~~~~~~~~~~
Adafruit_ST7735_mod.cpp:355:7: error: '_rst' was not declared in this scope
355 | if (_rst) {
| ^~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In member function 'void Adafruit_ST7735_mod::initR(uint8_t)':
Adafruit_ST7735_mod.cpp:380:5: error: 'colstart' was not declared in this scope
380 | colstart = 2;
| ^~~~~~~~
Adafruit_ST7735_mod.cpp:381:5: error: 'rowstart' was not declared in this scope
381 | rowstart = 1;
| ^~~~~~~~
Adafruit_ST7735_mod.cpp:385:5: error: 'colstart' was not declared in this scope
385 | colstart = 2;
| ^~~~~~~~
Adafruit_ST7735_mod.cpp:386:5: error: 'rowstart' was not declared in this scope
386 | rowstart = 3;
| ^~~~~~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In member function 'void Adafruit_ST7735_mod::setAddrWindow(uint8_t, uint8_t, uint8_t, uint8_t)':
Adafruit_ST7735_mod.cpp:407:16: error: 'colstart' was not declared in this scope
407 | writedata(x0+colstart); // XSTART
| ^~~~~~~~
Adafruit_ST7735_mod.cpp:413:16: error: 'rowstart' was not declared in this scope
413 | writedata(y0+rowstart); // YSTART
| ^~~~~~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In member function 'void Adafruit_ST7735_mod::startAddrWindow(uint8_t, uint8_t, uint8_t, uint8_t)':
Adafruit_ST7735_mod.cpp:426:4: error: 'rsport' was not declared in this scope; did you mean 'ushort'?
426 | *rsport |= rspinmask;
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:426:15: error: 'rspinmask' was not declared in this scope
426 | *rsport |= rspinmask;
| ^~~~~~~~~
Adafruit_ST7735_mod.cpp:427:4: error: 'csport' was not declared in this scope; did you mean 'ushort'?
427 | *csport &= ~cspinmask;
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:427:15: error: 'cspinmask' was not declared in this scope
427 | *csport &= ~cspinmask;
| ^~~~~~~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In member function 'void Adafruit_ST7735_mod::endAddrWindow()':
Adafruit_ST7735_mod.cpp:432:4: error: 'csport' was not declared in this scope; did you mean 'ushort'?
432 | *csport |= cspinmask;
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:432:14: error: 'cspinmask' was not declared in this scope
432 | *csport |= cspinmask;
| ^~~~~~~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In member function 'void Adafruit_ST7735_mod::pushColor(uint16_t)':
Adafruit_ST7735_mod.cpp:443:4: error: 'rsport' was not declared in this scope; did you mean 'ushort'?
443 | *rsport |= rspinmask;
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:443:15: error: 'rspinmask' was not declared in this scope
443 | *rsport |= rspinmask;
| ^~~~~~~~~
Adafruit_ST7735_mod.cpp:444:4: error: 'csport' was not declared in this scope; did you mean 'ushort'?
444 | *csport &= ~cspinmask;
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:444:15: error: 'cspinmask' was not declared in this scope
444 | *csport &= ~cspinmask;
| ^~~~~~~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In member function 'virtual void Adafruit_ST7735_mod::drawPixel(int16_t, int16_t, uint16_t)':
Adafruit_ST7735_mod.cpp:464:4: error: 'rsport' was not declared in this scope; did you mean 'ushort'?
464 | *rsport |= rspinmask;
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:464:15: error: 'rspinmask' was not declared in this scope
464 | *rsport |= rspinmask;
| ^~~~~~~~~
Adafruit_ST7735_mod.cpp:465:4: error: 'csport' was not declared in this scope; did you mean 'ushort'?
465 | *csport &= ~cspinmask;
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:465:15: error: 'cspinmask' was not declared in this scope
465 | *csport &= ~cspinmask;
| ^~~~~~~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In member function 'virtual void Adafruit_ST7735_mod::drawFastVLine(int16_t, int16_t, int16_t, uint16_t)':
Adafruit_ST7735_mod.cpp:490:4: error: 'rsport' was not declared in this scope; did you mean 'ushort'?
490 | *rsport |= rspinmask;
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:490:15: error: 'rspinmask' was not declared in this scope
490 | *rsport |= rspinmask;
| ^~~~~~~~~
Adafruit_ST7735_mod.cpp:491:4: error: 'csport' was not declared in this scope; did you mean 'ushort'?
491 | *csport &= ~cspinmask;
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:491:15: error: 'cspinmask' was not declared in this scope
491 | *csport &= ~cspinmask;
| ^~~~~~~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In member function 'virtual void Adafruit_ST7735_mod::drawFastHLine(int16_t, int16_t, int16_t, uint16_t)':
Adafruit_ST7735_mod.cpp:516:4: error: 'rsport' was not declared in this scope; did you mean 'ushort'?
516 | *rsport |= rspinmask;
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:516:15: error: 'rspinmask' was not declared in this scope
516 | *rsport |= rspinmask;
| ^~~~~~~~~
Adafruit_ST7735_mod.cpp:517:4: error: 'csport' was not declared in this scope; did you mean 'ushort'?
517 | *csport &= ~cspinmask;
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:517:15: error: 'cspinmask' was not declared in this scope
517 | *csport &= ~cspinmask;
| ^~~~~~~~~
D:\IOT\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\Adafruit_ST7735_mod.cpp: In member function 'virtual void Adafruit_ST7735_mod::fillRect(int16_t, int16_t, int16_t, int16_t, uint16_t)':
Adafruit_ST7735_mod.cpp:552:4: error: 'rsport' was not declared in this scope; did you mean 'ushort'?
552 | *rsport |= rspinmask;
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:552:15: error: 'rspinmask' was not declared in this scope
552 | *rsport |= rspinmask;
| ^~~~~~~~~
Adafruit_ST7735_mod.cpp:553:4: error: 'csport' was not declared in this scope; did you mean 'ushort'?
553 | *csport &= ~cspinmask;
| ^~~~~~
| ushort
Adafruit_ST7735_mod.cpp:553:15: error: 'cspinmask' was not declared in this scope
553 | *csport &= ~cspinmask;
| ^~~~~~~~~
exit status 1
'_cs' was not declared in this scope; did you mean 'cs'?

I was thinking if it would be possible to use the camera with a ESP8266. The idea is to use the fast SPI (40MHz) of the ESP to provide the XCLK and also to read pixel data from a shift register connected to the datalines from the camera (and using PCLK to latch data in the shift register). Do you think this is doable?

Running the ESP at 160MHz would hopefully give enough time to push out rows of the image as UDP packets turning it into the cheapest webcam ever :) Or give time to do some actual image processing on the data for use in robots. Maybe it's even possible to use some cleverness to be able to switch between reading pixels from the camera on the SPI to pushing them out to a display on the same SPI. Or maybe software SPI is enough at 160Mhz to get a good framerate on the display.

Hello Indrekluuk,
thanks for the Code so far. It first helped me with getting my new parts working on a Nano.

Right now im trying to switch to ESP32 (on ESP32S NodeMCU Dev Kit C, https://www.az-delivery.de/products/esp32-dev-kitc-v2-ai-thinker-soldered), and am having difficulties with available tutorials for that.

I first used the following (and only one I could find) tutorial (https://github.com/bitluni/ESP32CameraI2S) and had a pretty abstract issue (posted it here: https://www.esp32.com/viewtopic.php?f=12&t=34415).

Now I'm asking myself if it would be possible to use your code for the task and if i might need to redefine pins.
Would it possible and sensible to do so with reasonable efford? I can't seem to find pin definitions in code (I'm a beginner so it's well possible I just didn't realize). I know you used part of ComputerNerds Code and also asked this question on his repository, but thought you might be able to help aswell.

Secondly I am looking for some longer term advice regarding the application I am aiming for.
I would like to do a on-board image classification with TF-lite or similar libraries on the NodeMCU and am wondering, if the read-in can be done by programs like these or if I have to watch out for special factor like memory allocation to save an entire image before passing it to the algorithm. Here any advice or references would be appreceated greatly since I am mostly a beginner.

Thank you for your time, I hope the questions are readable and relevant.

cchpQUlM.ltrans0.o:(.text.startup+0x86): undefined reference to `initializeScreenAndCamera()'

cchpQUlM.ltrans0.o:(.text.startup+0x8e): undefined reference to `processFrame()'

collect2.exe: error: ld returned 1 exit status

Is it possible to add ethernet to the OV7670 solution (without fifo)? If so, what would be the cheapest solution to do so? The original Arduino Ethernet shield seems to be pretty expensive to me.

Thanks!

I got a thought for improving framerate: since you are blindly reading pixels, could you not double the framerate for grayscale video by doubling the pixel clock, changing to YUV and only reading every other byte (the luma (Y)) from the YUYVYUYVYUYV.. byte stream?

Hi!
How I can change baud to other value, 230400, 460800, for example?

If I change only baud value in ExampleUart.cpp then i get several images in one frame.

I have an error when I verify the whole project. The ExampleTftBufferedCameraFrame.cpp file shows an error as such above. I am quiet new to Arduino, but love to learn. Can someone help? :) thanks in advance

Thank you for the reg defs most particularly RGB565

Yours are the ONLY regs defs that worked for me.

I think its an issue with the board definitions.

The IDE gives a list of "not declared in this scope" errors if I try to use the Nano Every.
On an older nano it compiles fine.

F:\Downloads\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\LiveOV7670.ino: In function 'void setup()':
LiveOV7670:14:3: error: 'CLKPR' was not declared in this scope
   CLKPR = 0x80; // enter clock rate change mode
   ^~~~~
F:\Downloads\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\LiveOV7670.ino:14:3: note: suggested alternative: 'CLKCTRL'
   CLKPR = 0x80; // enter clock rate change mode
   ^~~~~
   CLKCTRL
In file included from C:\Users\user\Documents\Arduino\libraries\LiveOV7670Library/BufferedCameraOV7670.h:8:0,
                 from C:\Users\user\Documents\Arduino\libraries\LiveOV7670Library/BufferedCameraOV7670_QQVGA_10hz.h:8,
                 from F:\Downloads\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\ExampleTftBufferedCameraFrame.cpp:13:
C:\Users\user\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h: In member function 'void CameraOV7670::waitForVsync()':
C:\Users\user\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h:218:10: error: 'OV7670_VSYNC' was not declared in this scope
   while(!OV7670_VSYNC);
          ^~~~~~~~~~~~
C:\Users\user\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h:218:10: note: suggested alternative: 'COM10_HSYNC'
   while(!OV7670_VSYNC);
          ^~~~~~~~~~~~
          COM10_HSYNC
C:\Users\user\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h: In member function 'void CameraOV7670::waitForPixelClockLow()':
C:\Users\user\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h:227:9: error: 'OV7670_PIXEL_CLOCK' was not declared in this scope
   while(OV7670_PIXEL_CLOCK);
         ^~~~~~~~~~~~~~~~~~
C:\Users\user\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h: In member function 'void CameraOV7670::waitForPixelClockHigh()':
C:\Users\user\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h:231:10: error: 'OV7670_PIXEL_CLOCK' was not declared in this scope
   while(!OV7670_PIXEL_CLOCK);
          ^~~~~~~~~~~~~~~~~~
C:\Users\user\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h: In member function 'void CameraOV7670::ignoreHorizontalPaddingRight()':
C:\Users\user\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h:250:9: error: 'OV7670_PIXEL_CLOCK' was not declared in this scope
   while(OV7670_PIXEL_CLOCK) pixelTime++;
         ^~~~~~~~~~~~~~~~~~
C:\Users\user\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h:251:10: error: 'OV7670_PIXEL_CLOCK' was not declared in this scope
   while(!OV7670_PIXEL_CLOCK) pixelTime++;
          ^~~~~~~~~~~~~~~~~~
C:\Users\user\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h: In member function 'void CameraOV7670::readPixelByte(uint8_t&)':
C:\Users\user\Documents\Arduino\libraries\LiveOV7670Library/CameraOV7670.h:256:3: error: 'OV7670_READ_PIXEL_BYTE' was not declared in this scope
   OV7670_READ_PIXEL_BYTE(byte);
   ^~~~~~~~~~~~~~~~~~~~~~
F:\Downloads\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\ExampleTftBufferedCameraFrame.cpp: In function 'void sendPixelByte(uint8_t)':
ExampleTftBufferedCameraFrame.cpp:138:3: error: 'SPDR' was not declared in this scope
   SPDR = byte;
   ^~~~
F:\Downloads\LiveOV7670-master\LiveOV7670-master\src\LiveOV7670\ExampleTftBufferedCameraFrame.cpp:138:3: note: suggested alternative: 'SDA'
   SPDR = byte;
   ^~~~
   SDA
exit status 1
'CLKPR' was not declared in this scope

What is the framerate you achieved? It probably depends on the Arduino model used, right? Did you test FPS limits of various boards?

I need 320x240 at 15 fps with 8 bit pixel data. Can you suggest a board for this please? I want sensor without fifo and also Ethernet capability on the board. Can Arduino do this (maybe Due) or is something like STM32 or ESP32 needed?

Thanks in advance!

When i started the "Listen" Command in ArduImageCapture i get following failure:

Command checksum failed!

1. Check baud rate
2. Download the latest version of the Arduino code and the image capture program.
   Command checksum failed!

Hi,
I would like to connect the OV7670 to Arduino MEGA but just looking at your define:

#if defined(AVR_ATmega328P) || defined(AVR_ATmega168) || defined(AVR_ATmega1280) || defined(AVR_ATmega2560))
/*
B (digital pin 8 to 13)
C (analog input pins)
D (digital pins 0 to 7)
*/

#ifndef OV7670_VSYNC
#define OV7670_VSYNC (PIND & 0b00000100) // PIN 2
#endif

#ifndef OV7670_PIXEL_CLOCK
#define OV7670_PIXEL_CLOCK_PIN 12
#define OV7670_PIXEL_CLOCK (PINB & 0b00010000) // PIN 12
#endif

#ifndef OV7670_READ_PIXEL_BYTE
// (PIN 4..7) | (PIN A0..A3)
#define OV7670_READ_PIXEL_BYTE(b)
uint8_t pinc=PINC;
b=((PIND & 0b11110000) | (pinc & 0b00001111))
#endif

// pin 3 to 8Mhz (LiveOV7670Library clock)
#ifndef OV7670_INIT_CLOCK_OUT
#define OV7670_INIT_CLOCK_OUT
pinMode(3, OUTPUT);
TCCR2A = _BV(COM2A1) | _BV(COM2B1) | _BV(WGM21) | _BV(WGM20);
TCCR2B = _BV(WGM22) | _BV(CS20);
OCR2A = 1;
OCR2B = 0
#endif

#endif

I think there is something wrong.

For example A0..A3 are not on PORTC but on PORTF, Pin 4..7 are on PG5, PE3,PH3,PH4.
SCL and SDA are not on PC4 and PC5 but on PD0 and PD1.

Because Arduino MEGA has a lot of extra port I think it is possible to use a differente wiring, so that 'standard' IO will stay free for other use. This is the wiring I think could work:
SIOC -> PIN 21 - PD0
SIOD -> PIN 20 - PD1
VSYNC -> PIN 46 - PL5
HREF -> PIN47 - PL4
PCLK -> PIN49 - PL2
XCLK - > PIN48 - PL3
D0..D7 -> PIN37..PIN30 -> PC0..PC7 (in this way we do need to OR two different port).

Do you think I'm right ?
If yes, what are the changes to your code ?
Regards
Giancarlo

Hi, thanks for this amazing piece of code! I spent a couple of hours trying to get the same thing working myself but only got like 0.5fps so I was very happy to find this (found it when giving up on atmega and was googling how to get it running faster on a STM32 :))

So it works fine except for some distorted lines / streaks in the image. First example is in greyscale mode:

And then in color mode:

This is what the camera is looking at in the color image:

Also, the image is overall very dark. Is if possible for the auto exposure to settle to a higher level? Or maybe turn it off altogether and setting it to a fixed value.

Hi Indrekluuk,
I want to install a camera modul following your instructions. I managed to open the LiveOV7670.ino. Then I managed to include the library Adafruit GFX library. But now it again tells me "CameraOV7670.h: No such file or directory" and I can't include your library "ArduinoCamera_Master" because it doesn't show up in the library manager. Can you help me?
Best, Leo

Do you think it is possible to exactly "frame synchronize" two OV7670 sensors when used with Arduino (or compatible) board? Say there will be enough pins to connect the cameras (I may use only 4 bits per sensor). The idea is to feed a common XCLK input signal into both cameras.

However, there may be another issue in synchronizing the I2C communication to configure the cameras at exactly the same time - I have no idea how this could be done. The best may be of course 2 parallel and independent I2C interfaces on Arduino but even with that the CPU would need to be able to issue an I2C command on both buses simultaneously (within a single CPU clock cycle?).

hai,

can anyone help me in using this library with ILI9488 480x320 tft lcd?

thanks

Hello,

I have been trying to get this code to work with OV2640 but I am unable to. I always get red screen I connect the camera half way point and I am not getting a green screen. Please let me know what I should do?

You mentioned on youtube about success and tips of how to change it.  But does the current version have all these improvements or can you publish it? 

Hi,
Can you edit and give the code that works with Texas Instrument CC1350 and for Energia IDE. It is very similar with arduino. However, UDR0 is not working with CC1350. If you give a version for CC1350 (Energia). It would be amazing. Camera still is the same OV7670. I will use UART to see the real time video. Thank you for your time.
sincerely

I'm trying to send images to my pc. I used the connections you have for the Mega OV7670 connections, and I get a blurry image. Is there anything I have change in the program?

Vsync gets outputed after every captured frame
Vsync
Frame 1
Vsync
Frame 2
Vsync
Frame 3
Vsync
Frame 4
Vsync
Frame 5
Vsync
Frame 6
Vsync
Frame 7
Vsync
Frame 8
Vsync
Frame 9
Vsync
Frame 10
Vsync
Is it my wiring or the program?

Hello you did a great job creating the code.
For space reasons I would like to use a 0.96 GREETAB LCD, unfortunately I do not understand the code to adapt it to the resolution.

Would you be willing to quietly support me ??

translated with Google

Hello Indrek, I'm having troubles with connecting OV7670 with the Arduino Mega. I've perfectly hooked up all the connections but the TFT disply always gives me red screen. I've also tried using Arduino UNO and it works on that... Are you able to help me? Thanks

Arduino editor won't accept ov7670 library as a valid library (Adafruit GFX is working fine). I know they tightened regulations in 2019, so it may be out of date. I saw people as recently as 4 months ago saying it worked for them so maybe I'm just doing something wrong. The error message I'm getting is "[LiveOV7670Library] parse library.properties: library.properties not found"

I copy the plugin in to the correct address but it doesn't appear in tools bar.

.

Hi!
I have been trying to implement my OV7670 Camera on an SAMD51 basing on your code but actually i'm having troube to set up the pins architecture.
Since the architecture of the Arduino UNO/Nano ùC and the SAMD51 are not the same, i'd like to ask you if you can to set my an architecture to me.

I also found an example where OV7670 Camera is used with an SAMD51 GRAND CENTRALE METRO 4 but on that example, they used the PCC (Parallel Capture Controller) pins to communicate with the camera but the problem is that i'm not having access to those pins on my board.

Here is the link that example: https://learn.adafruit.com/adafruit-ov7670-camera-library-samd51?view=all
Thank you !!

@indrekluuk
I tried to use this and sourced the materials but my display is different from the video tutorial, The one I've been using is the 1.8 inch Full Color 128x160 SPI Full Color TFT LCD Display Module ST7735S 3.3V Replace OLED Power Supply for Arduino DIY KIT
https://shopee.ph/1.8-inch-Full-Color-128x160-SPI-Full-Color-TFT-LCD-Display-Module-ST7735S-3.3V-Replace-OLED-Power-Supply-for-Arduino-DIY-KIT-i.310237530.4753023774

so I tried the wirings and it just flashes white and I tried it again and again. I didn't modify the code so I connected it like this
1 GND Soil - GND
2 VDC Power 3.3 V - 3.3V
3 SCL Series watch pin - Pin 13
4 SDA Data Entry Series - Pin 11
5 RES LCM Reset pin - Pin 10
This pin is resetting the signal input. When the pin is low, the initialization of the chip is
Executed! Keep this bolt high during normal operation.
6 DC Data / Control - Pin 8
7 CS Chip, select - Pin 9
8 BLK Control pin background - 3.3V

I added some code to the Example == 2 which detects plant health. What can I do to fix this, do I need to modify the code?

Hey there, found this project and I've decided to start porting it over to the massively powerful Teensy 3.2.
I've already got a 30*30 mouse sensor clocking out frames at well in excess of 45FPS bottlenecked by the display method. Plus it can be overclocked to up to 166mhz, though 144mhz (a 100% overclock) is rock solid. First issue is the i2c wire lib and complaints it has

Congrats for your project, it helps me very much! I have a question: how can i use a button and a led in this project?
I want to press a physical button on the A. uno, the led to become on and pixel reading to begin, but only for one frame until I push the button again.
I tried to modify ExempleUart.cpp and function processFrame() but i only managed to make the led light up when the pixel reading begin.
I'm talking about the project with the java application.
Please give me a helping hand in changing the code. Thank you !

Hello sir,

I found your project on youtube and thats so incredible! But the wiring is to complicated, can you share the PCB scheme? Thank you!

The way you avoid waiting to get a higher frame rate is impressive. I tried doing that awhile ago and I could never get it to work reliably. 10 FPS on an Arduino UNO is mind blowing.

Hi @indrekluuk ,
I am trying go get a color image at vga resolution(640x480) over the serial port.
But the image is repeating over a full frame.

This is the code i changed:

#if UART_MODE==4
static const uint16_t lineLength = 640;
static const uint16_t lineCount = 480;
static const uint32_t baud  = 1000000;
static const uint32_t uartSendWhileReadingCount  = 4;
static const uint8_t uartPixelFormat = UART_PIXEL_FORMAT_RGB565;
CameraOV7670 camera(CameraOV7670::RESOLUTION_VGA_640x480, CameraOV7670::PIXEL_RGB565, 25);//16
#endif

hallo, i want to ask if it is possible to serial print every pixel color and / or brightness and coordinates?.
Is it possible?

I am planning to use the ov7670 such as the wii mote (it has an internal cam and a microcontroller that sends back coordinates of the 4 brighter pixels that it sees)

thank you