├── XClk.h ├── README.md ├── Log.h ├── DMABuffer.h ├── XClk.cpp ├── BMP.h ├── I2C.h ├── I2SCamera.h ├── OV7670.h ├── ESP32_WebSocket_Camera.ino ├── I2SCamera.cpp ├── OV7670.cpp ├── LICENSE └── canvas_htm.h /XClk.h: -------------------------------------------------------------------------------- 1 | #pragma once 2 | 3 | bool ClockEnable(int pin, int Hz); 4 | void ClockDisable(); 5 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mudassar-tamboli/ESP32-OV7670-WebSocket-Camera/HEAD/README.md -------------------------------------------------------------------------------- /Log.h: -------------------------------------------------------------------------------- 1 | #pragma once 2 | #include "Arduino.h" 3 | 4 | /* 5 | #define DEBUG_PRINTLN(a) Serial.println(a) 6 | #define DEBUG_PRINT(a) Serial.print(a) 7 | #define DEBUG_PRINTLNF(a, f) Serial.println(a, f) 8 | #define DEBUG_PRINTF(a, f) Serial.print(a, f) 9 | */ 10 | #define DEBUG_PRINTLN(a) 11 | #define DEBUG_PRINT(a) 12 | #define DEBUG_PRINTLNF(a, f) 13 | #define DEBUG_PRINTF(a, f) 14 | 15 | -------------------------------------------------------------------------------- /DMABuffer.h: -------------------------------------------------------------------------------- 1 | #pragma once 2 | 3 | class DMABuffer 4 | { 5 | public: 6 | lldesc_t descriptor; 7 | unsigned char* buffer; 8 | DMABuffer(int bytes) 9 | { 10 | buffer = (unsigned char *)malloc(bytes); 11 | descriptor.length = bytes; 12 | descriptor.size = descriptor.length; 13 | descriptor.owner = 1; 14 | descriptor.sosf = 1; 15 | descriptor.buf = (uint8_t*) buffer; 16 | descriptor.offset = 0; 17 | descriptor.empty = 0; 18 | descriptor.eof = 1; 19 | descriptor.qe.stqe_next = 0; 20 | } 21 | 22 | void next(DMABuffer *next) 23 | { 24 | descriptor.qe.stqe_next = &(next->descriptor); 25 | } 26 | 27 | int sampleCount() const 28 | { 29 | return descriptor.length / 4; 30 | } 31 | 32 | ~DMABuffer() 33 | { 34 | if(buffer) 35 | delete(buffer); 36 | } 37 | }; 38 | 39 | -------------------------------------------------------------------------------- /XClk.cpp: -------------------------------------------------------------------------------- 1 | //parts of his code are taken from 2 | //https://github.com/igrr/esp32-cam-demo 3 | //by Ivan Grokhotkov 4 | //released under Apache License 2.0 5 | 6 | #include "XClk.h" 7 | #include "driver/ledc.h" 8 | 9 | bool ClockEnable(int pin, int Hz) 10 | { 11 | periph_module_enable(PERIPH_LEDC_MODULE); 12 | 13 | ledc_timer_config_t timer_conf; 14 | timer_conf.bit_num = (ledc_timer_bit_t)1; 15 | timer_conf.freq_hz = Hz; 16 | timer_conf.speed_mode = LEDC_HIGH_SPEED_MODE; 17 | timer_conf.timer_num = LEDC_TIMER_0; 18 | esp_err_t err = ledc_timer_config(&timer_conf); 19 | if (err != ESP_OK) { 20 | return false; 21 | } 22 | 23 | ledc_channel_config_t ch_conf; 24 | ch_conf.channel = LEDC_CHANNEL_0; 25 | ch_conf.timer_sel = LEDC_TIMER_0; 26 | ch_conf.intr_type = LEDC_INTR_DISABLE; 27 | ch_conf.duty = 1; 28 | ch_conf.speed_mode = LEDC_HIGH_SPEED_MODE; 29 | ch_conf.gpio_num = pin; 30 | err = ledc_channel_config(&ch_conf); 31 | if (err != ESP_OK) { 32 | return false; 33 | } 34 | return true; 35 | } 36 | 37 | void ClockDisable() 38 | { 39 | periph_module_disable(PERIPH_LEDC_MODULE); 40 | } 41 | 42 | -------------------------------------------------------------------------------- /BMP.h: -------------------------------------------------------------------------------- 1 | #pragma once 2 | 3 | //assuming pixel lines have multiples of 4 bytes sizes 4 | class BMP 5 | { 6 | 7 | static void setChar(void *buffer, int pos, char ch) 8 | { 9 | *(char*)(buffer+pos) = ch; 10 | } 11 | 12 | static void setLong(void *buffer, int pos, long l) 13 | { 14 | *(long*)(buffer+pos) = l; 15 | } 16 | 17 | static void setShort(void *buffer, int pos, short s) 18 | { 19 | *(short*)(buffer+pos) = s; 20 | } 21 | 22 | public: 23 | static const int headerSize = 54 + 12; 24 | 25 | static void construct16BitHeader(void *buffer, long xres, long yres) 26 | { 27 | setChar(buffer, 0, 'B'); 28 | setChar(buffer, 1, 'M'); 29 | 30 | long bytesPerLine = xres * 2; 31 | setLong(buffer, 2, bytesPerLine * yres + 54 + 12); //filesize 32 | setLong(buffer, 6, 0); 33 | 34 | setLong(buffer, 10, 54 + 12); //offset 35 | 36 | setLong(buffer, 14, 40); //header size 37 | setLong(buffer, 18, xres); 38 | setLong(buffer, 22, yres); 39 | setShort(buffer, 26, 1); //planes 40 | setShort(buffer, 28, 16); //bits 41 | 42 | setLong(buffer, 30, 3); //compression 3 = bit fields 43 | setLong(buffer, 38, 0); //x pix per meter 44 | setLong(buffer, 42, 0); //y pix per meter 45 | 46 | setLong(buffer, 46, 0); //biClrUsed 47 | setLong(buffer, 50, 0); //biClrImportant 48 | 49 | setLong(buffer, 54, 0xF800); //R mask 50 | setLong(buffer, 58, 0x07E0); //G mask 51 | setLong(buffer, 62, 0x001F); //B mask 52 | } 53 | }; 54 | 55 | 56 | -------------------------------------------------------------------------------- /I2C.h: -------------------------------------------------------------------------------- 1 | #include "Arduino.h" 2 | 3 | class I2C 4 | { 5 | void inline DELAY() 6 | { 7 | delayMicroseconds(1); 8 | } 9 | 10 | void inline SCLLOW() 11 | { 12 | pinMode(SCL, OUTPUT); 13 | digitalWrite(SCL, 0); 14 | } 15 | 16 | void inline SCLHIGH() 17 | { 18 | pinMode(SCL, INPUT_PULLUP); 19 | digitalWrite(SCL, 1); 20 | } 21 | 22 | void inline CLOCK() 23 | { 24 | DELAY(); 25 | SCLHIGH(); 26 | DELAY(); 27 | DELAY(); 28 | SCLLOW(); 29 | DELAY(); 30 | } 31 | 32 | void inline SDALOW() 33 | { 34 | pinMode(SDA, OUTPUT); 35 | digitalWrite(SDA, 0); 36 | } 37 | 38 | void inline SDAHIGH() 39 | { 40 | pinMode(SDA, OUTPUT); 41 | digitalWrite(SDA, 1); 42 | } 43 | 44 | void inline SDAPULLUP() 45 | { 46 | pinMode(SDA, INPUT_PULLUP); 47 | } 48 | 49 | void pushByte(unsigned char b) 50 | { 51 | for(char i = 0; i < 8; i++) 52 | { 53 | if(b & 0x80) 54 | SDAHIGH(); 55 | else 56 | SDALOW(); 57 | b <<= 1; 58 | CLOCK(); 59 | } 60 | } 61 | 62 | bool getAck() 63 | { 64 | SDAPULLUP(); 65 | DELAY(); 66 | SCLHIGH(); 67 | DELAY(); 68 | int r = digitalRead(SDA); 69 | SDALOW(); 70 | DELAY(); 71 | SCLLOW(); 72 | DELAY(); 73 | return r == 0; 74 | } 75 | 76 | void start() 77 | { 78 | SDAPULLUP(); 79 | DELAY(); 80 | SCLHIGH(); 81 | DELAY(); 82 | SDALOW(); 83 | DELAY(); 84 | SCLLOW(); 85 | DELAY(); 86 | } 87 | 88 | void end() 89 | { 90 | SCLHIGH(); 91 | DELAY(); 92 | SDAPULLUP(); 93 | DELAY(); 94 | } 95 | 96 | public: 97 | int SDA; 98 | int SCL; 99 | I2C(const int data, const int clock) 100 | { 101 | SDA = data; 102 | SCL = clock; 103 | pinMode(SDA, INPUT_PULLUP); 104 | pinMode(SCL, INPUT_PULLUP); 105 | digitalWrite(SDA, 0); 106 | digitalWrite(SCL, 0); 107 | } 108 | 109 | bool writeRegister(unsigned char addr, unsigned char reg, unsigned char data) 110 | { 111 | start(); 112 | pushByte(addr); 113 | 114 | if(!getAck()) 115 | { 116 | end(); 117 | return false; 118 | } 119 | 120 | pushByte(reg); 121 | if(!getAck()) 122 | { 123 | end(); 124 | return false; 125 | } 126 | 127 | pushByte(data); 128 | if(!getAck()) 129 | { 130 | end(); 131 | return false; 132 | } 133 | 134 | end(); 135 | return true; 136 | } 137 | }; 138 | -------------------------------------------------------------------------------- /I2SCamera.h: -------------------------------------------------------------------------------- 1 | //parts of his code are taken from 2 | //https://github.com/igrr/esp32-cam-demo 3 | //by Ivan Grokhotkov 4 | //released under Apache License 2.0 5 | 6 | #pragma once 7 | 8 | #include "soc/soc.h" 9 | #include "soc/gpio_sig_map.h" 10 | #include "soc/i2s_reg.h" 11 | #include "soc/i2s_struct.h" 12 | #include "soc/io_mux_reg.h" 13 | #include "driver/gpio.h" 14 | #include "driver/periph_ctrl.h" 15 | #include "rom/lldesc.h" 16 | #include "XClk.h" 17 | #include "DMABuffer.h" 18 | 19 | class I2SCamera 20 | { 21 | public: 22 | static gpio_num_t vSyncPin; 23 | static int blocksReceived; 24 | static int framesReceived; 25 | static int xres; 26 | static int yres; 27 | static intr_handle_t i2sInterruptHandle; 28 | static intr_handle_t vSyncInterruptHandle; 29 | static int dmaBufferCount; 30 | static int dmaBufferActive; 31 | static DMABuffer **dmaBuffer; 32 | static unsigned char* frame; 33 | static int framePointer; 34 | static int frameBytes; 35 | static volatile bool stopSignal; 36 | 37 | static int startBlock; 38 | static int endBlock; 39 | static int blockSlice; 40 | 41 | typedef enum { 42 | /* camera sends byte sequence: s1, s2, s3, s4, ... 43 | * fifo receives: 00 s1 00 s2, 00 s2 00 s3, 00 s3 00 s4, ... 44 | */ 45 | SM_0A0B_0B0C = 0, 46 | /* camera sends byte sequence: s1, s2, s3, s4, ... 47 | * fifo receives: 00 s1 00 s2, 00 s3 00 s4, ... 48 | */ 49 | SM_0A0B_0C0D = 1, 50 | /* camera sends byte sequence: s1, s2, s3, s4, ... 51 | * fifo receives: 00 s1 00 00, 00 s2 00 00, 00 s3 00 00, ... 52 | */ 53 | SM_0A00_0B00 = 3, 54 | } i2s_sampling_mode_t; 55 | 56 | 57 | static inline void i2sConfReset() 58 | { 59 | const uint32_t lc_conf_reset_flags = I2S_IN_RST_M | I2S_AHBM_RST_M | I2S_AHBM_FIFO_RST_M; 60 | I2S0.lc_conf.val |= lc_conf_reset_flags; 61 | I2S0.lc_conf.val &= ~lc_conf_reset_flags; 62 | 63 | const uint32_t conf_reset_flags = I2S_RX_RESET_M | I2S_RX_FIFO_RESET_M | I2S_TX_RESET_M | I2S_TX_FIFO_RESET_M; 64 | I2S0.conf.val |= conf_reset_flags; 65 | I2S0.conf.val &= ~conf_reset_flags; 66 | while (I2S0.state.rx_fifo_reset_back); 67 | } 68 | 69 | void start() 70 | { 71 | i2sRun(); 72 | } 73 | 74 | void stop() 75 | { 76 | stopSignal = true; 77 | while(stopSignal); 78 | } 79 | 80 | void oneFrame() 81 | { 82 | start(); 83 | stop(); 84 | } 85 | 86 | static void i2sStop(); 87 | static void i2sRun(); 88 | 89 | static void dmaBufferInit(int bytes); 90 | static void dmaBufferDeinit(); 91 | 92 | static bool initVSync(int pin); 93 | static void deinitVSync(); 94 | 95 | static void IRAM_ATTR i2sInterrupt(void* arg); 96 | static void IRAM_ATTR vSyncInterrupt(void* arg); 97 | 98 | static bool i2sInit(const int VSYNC, const int HREF, const int PCLK, const int D0, const int D1, const int D2, const int D3, const int D4, const int D5, const int D6, const int D7); 99 | 100 | static bool init(const int XRES, const int YRES, const int VSYNC, const int HREF, const int XCLK, const int PCLK, const int D0, const int D1, const int D2, const int D3, const int D4, const int D5, const int D6, const int D7); 101 | }; 102 | -------------------------------------------------------------------------------- /OV7670.h: -------------------------------------------------------------------------------- 1 | #pragma once 2 | #include "I2SCamera.h" 3 | #include "I2C.h" 4 | 5 | class OV7670: public I2SCamera 6 | { 7 | public: 8 | enum Mode 9 | { 10 | QQQVGA_RGB565, 11 | QQVGA_RGB565, 12 | QVGA_RGB565, 13 | VGA_RGB565, 14 | }; 15 | int xres, yres; 16 | 17 | protected: 18 | static const int ADDR = 0x42; 19 | 20 | Mode mode; 21 | I2C i2c; 22 | 23 | void testImage(); 24 | void saturation(int s); 25 | void frameControl(int hStart, int hStop, int vStart, int vStop); 26 | void QVGA(); 27 | void QVGARGB565(); 28 | void VGA(); 29 | void VGARGB565(); 30 | 31 | void QQVGA(); 32 | void QQVGARGB565(); 33 | void QQQVGA(); 34 | void QQQVGARGB565(); 35 | void inline writeRegister(unsigned char reg, unsigned char data) 36 | { 37 | i2c.writeRegister(ADDR, reg, data); 38 | } 39 | 40 | public: 41 | OV7670(OV7670::Mode m, const int SIOD, const int SIOC, const int VSYNC, const int HREF, const int XCLK, const int PCLK, const int D0, const int D1, const int D2, const int D3, const int D4, const int D5, const int D6, const int D7); 42 | 43 | 44 | //camera registers 45 | static const int REG_GAIN = 0x00; 46 | static const int REG_BLUE = 0x01; 47 | static const int REG_RED = 0x02; 48 | static const int REG_COM1 = 0x04; 49 | static const int REG_VREF = 0x03; 50 | static const int REG_COM4 = 0x0d; 51 | static const int REG_COM5 = 0x0e; 52 | static const int REG_COM6 = 0x0f; 53 | static const int REG_AECH = 0x10; 54 | static const int REG_CLKRC = 0x11; 55 | static const int REG_COM7 = 0x12; 56 | static const int COM7_RGB = 0x04; 57 | static const int REG_COM8 = 0x13; 58 | static const int COM8_FASTAEC = 0x80; // Enable fast AGC/AEC 59 | static const int COM8_AECSTEP = 0x40; // Unlimited AEC step size 60 | static const int COM8_BFILT = 0x20; // Band filter enable 61 | static const int COM8_AGC = 0x04; // Auto gain enable 62 | static const int COM8_AWB = 0x02; // White balance enable 63 | static const int COM8_AEC = 0x0; 64 | static const int REG_COM9 = 0x14; 65 | static const int REG_COM10 = 0x15; 66 | static const int REG_COM14 = 0x3E; 67 | static const int REG_COM11 = 0x3B; 68 | static const int COM11_NIGHT = 0x80; 69 | static const int COM11_NMFR = 0x60; 70 | static const int COM11_HZAUTO = 0x10; 71 | static const int COM11_50HZ = 0x08; 72 | static const int COM11_EXP = 0x0; 73 | static const int REG_TSLB = 0x3A; 74 | static const int REG_RGB444 = 0x8C; 75 | static const int REG_COM15 = 0x40; 76 | static const int COM15_RGB565 = 0x10; 77 | static const int COM15_R00FF = 0xc0; 78 | static const int REG_HSTART = 0x17; 79 | static const int REG_HSTOP = 0x18; 80 | static const int REG_HREF = 0x32; 81 | static const int REG_VSTART = 0x19; 82 | static const int REG_VSTOP = 0x1A; 83 | static const int REG_COM3 = 0x0C; 84 | static const int REG_MVFP = 0x1E; 85 | static const int REG_COM13 = 0x3d; 86 | static const int COM13_UVSAT = 0x40; 87 | static const int REG_SCALING_XSC = 0x70; 88 | static const int REG_SCALING_YSC = 0x71; 89 | static const int REG_SCALING_DCWCTR = 0x72; 90 | static const int REG_SCALING_PCLK_DIV = 0x73; 91 | static const int REG_SCALING_PCLK_DELAY = 0xa2; 92 | static const int REG_BD50MAX = 0xa5; 93 | static const int REG_BD60MAX = 0xab; 94 | static const int REG_AEW = 0x24; 95 | static const int REG_AEB = 0x25; 96 | static const int REG_VPT = 0x26; 97 | static const int REG_HAECC1 = 0x9f; 98 | static const int REG_HAECC2 = 0xa0; 99 | static const int REG_HAECC3 = 0xa6; 100 | static const int REG_HAECC4 = 0xa7; 101 | static const int REG_HAECC5 = 0xa8; 102 | static const int REG_HAECC6 = 0xa9; 103 | static const int REG_HAECC7 = 0xaa; 104 | static const int REG_COM12 = 0x3c; 105 | static const int REG_GFIX = 0x69; 106 | static const int REG_COM16 = 0x41; 107 | static const int COM16_AWBGAIN = 0x08; 108 | static const int REG_EDGE = 0x3f; 109 | static const int REG_REG76 = 0x76; 110 | static const int ADCCTR0 = 0x20; 111 | 112 | }; 113 | 114 | -------------------------------------------------------------------------------- /ESP32_WebSocket_Camera.ino: -------------------------------------------------------------------------------- 1 | 2 | //Author : Mudassar Tamboli 3 | 4 | #include "OV7670.h" 5 | 6 | #include 7 | #include 8 | #include 9 | #include 10 | #include 11 | #include 12 | #include "canvas_htm.h" 13 | 14 | const char *ap_ssid = "Esp32AP"; 15 | const char *ap_password = "thereisnospoon"; 16 | 17 | const char *ssid_AP_1 = "XXXXXXXXXX"; 18 | const char *pwd_AP_1 = "xxxxxxxxxx"; 19 | 20 | const char *ssid_AP_2 = "XXXXXXXXX"; 21 | const char *pwd_AP_2 = "xxxxxxxxx"; 22 | 23 | const char *ssid_AP_3 = "XXXXXXXXX"; 24 | const char *pwd_AP_3 = "xxxxxxxxx"; 25 | 26 | const int SIOD = 21; //SDA 27 | const int SIOC = 22; //SCL 28 | 29 | const int VSYNC = 34; 30 | const int HREF = 35; 31 | 32 | const int XCLK = 32; 33 | const int PCLK = 33; 34 | 35 | const int D0 = 27; 36 | const int D1 = 17; 37 | const int D2 = 16; 38 | const int D3 = 15; 39 | const int D4 = 14; 40 | const int D5 = 13; 41 | const int D6 = 12; 42 | const int D7 = 4; 43 | 44 | const int TFT_DC = 2; 45 | const int TFT_CS = 5; 46 | //DIN <- MOSI 23 47 | //CLK <- SCK 18 48 | 49 | #define ssid1 "YOUR_WIFI_SSID" 50 | #define password1 "YOUR_PASSWORD" 51 | //#define ssid2 "" 52 | //#define password2 "" 53 | 54 | OV7670 *camera; 55 | 56 | WiFiMulti wifiMulti; 57 | WiFiServer server(80); 58 | 59 | unsigned char pix = 0; 60 | 61 | //unsigned char bmpHeader[BMP::headerSize]; 62 | 63 | unsigned char start_flag = 0xAA; 64 | unsigned char end_flag = 0xFF; 65 | unsigned char ip_flag = 0x11; 66 | 67 | WebSocketsServer webSocket(81); // create a websocket server on port 81 68 | 69 | void startWebSocket() { // Start a WebSocket server 70 | webSocket.begin(); // start the websocket server 71 | webSocket.onEvent(webSocketEvent); // if there's an incomming websocket message, go to function 'webSocketEvent' 72 | Serial.println("WebSocket server started."); 73 | } 74 | 75 | void startWebServer() 76 | { 77 | server.begin(); 78 | Serial.println("Http web server started."); 79 | } 80 | void serve() { 81 | WiFiClient client = server.available(); 82 | if (client) 83 | { 84 | //Serial.println("New Client."); 85 | String currentLine = ""; 86 | while (client.connected()) 87 | { 88 | if (client.available()) 89 | { 90 | char c = client.read(); 91 | //Serial.write(c); 92 | if (c == '\n') 93 | { 94 | if (currentLine.length() == 0) 95 | { 96 | client.println("HTTP/1.1 200 OK"); 97 | client.println("Content-type:text/html"); 98 | client.println(); 99 | client.print(canvas_htm); 100 | client.println(); 101 | break; 102 | } 103 | else 104 | { 105 | currentLine = ""; 106 | } 107 | } 108 | else if (c != '\r') 109 | { 110 | currentLine += c; 111 | } 112 | 113 | } 114 | } 115 | // close the connection: 116 | client.stop(); 117 | 118 | } 119 | } 120 | 121 | void webSocketEvent(uint8_t num, WStype_t type, uint8_t * payload, size_t payloadlength) { // When a WebSocket message is received 122 | 123 | int blk_count = 0; 124 | 125 | char canvas_VGA[] = "canvas-VGA"; 126 | char canvas_Q_VGA[] = "canvas-Q-VGA"; 127 | char canvas_QQ_VGA[] = "canvas-QQ-VGA"; 128 | char canvas_QQQ_VGA[] = "canvas-QQQ-VGA"; 129 | char ipaddr[26] ; 130 | IPAddress localip; 131 | 132 | switch (type) { 133 | case WStype_DISCONNECTED: // if the websocket is disconnected 134 | Serial.printf("[%u] Disconnected!\n", num); 135 | break; 136 | case WStype_CONNECTED: { // if a new websocket connection is established 137 | IPAddress ip = webSocket.remoteIP(num); 138 | Serial.printf("[%u] Connected from %d.%d.%d.%d url: %s\n", num, ip[0], ip[1], ip[2], ip[3], payload); 139 | webSocket.sendBIN(0, &ip_flag, 1); 140 | localip = WiFi.localIP(); 141 | sprintf(ipaddr, "%d.%d.%d.%d", localip[0], localip[1], localip[2], localip[3]); 142 | webSocket.sendTXT(0, (const char *)ipaddr); 143 | 144 | } 145 | break; 146 | case WStype_TEXT: // if new text data is received 147 | if (payloadlength == sizeof(canvas_QQQ_VGA)-1) { 148 | if (memcmp(canvas_QQQ_VGA, payload, payloadlength) == 0) { 149 | Serial.printf("canvas_QQQ_VGA"); 150 | webSocket.sendBIN(0, &end_flag, 1); 151 | camera = new OV7670(OV7670::Mode::QQQVGA_RGB565, SIOD, SIOC, VSYNC, HREF, XCLK, PCLK, D0, D1, D2, D3, D4, D5, D6, D7); 152 | } 153 | } else if (payloadlength == sizeof(canvas_QQ_VGA)-1) { 154 | if (memcmp(canvas_QQ_VGA, payload, payloadlength) == 0) { 155 | Serial.printf("canvas_QQ_VGA"); 156 | webSocket.sendBIN(0, &end_flag, 1); 157 | camera = new OV7670(OV7670::Mode::QQVGA_RGB565, SIOD, SIOC, VSYNC, HREF, XCLK, PCLK, D0, D1, D2, D3, D4, D5, D6, D7); 158 | } 159 | } else if (payloadlength == sizeof(canvas_Q_VGA)-1) { 160 | if (memcmp(canvas_Q_VGA, payload, payloadlength) == 0) { 161 | Serial.printf("canvas_Q_VGA"); 162 | webSocket.sendBIN(0, &end_flag, 1); 163 | camera = new OV7670(OV7670::Mode::QVGA_RGB565, SIOD, SIOC, VSYNC, HREF, XCLK, PCLK, D0, D1, D2, D3, D4, D5, D6, D7); 164 | } 165 | } else if (payloadlength == sizeof(canvas_VGA)-1) { 166 | if (memcmp(canvas_VGA, payload, payloadlength) == 0) { 167 | Serial.printf("canvas_VGA"); 168 | webSocket.sendBIN(0, &end_flag, 1); 169 | camera = new OV7670(OV7670::Mode::VGA_RGB565, SIOD, SIOC, VSYNC, HREF, XCLK, PCLK, D0, D1, D2, D3, D4, D5, D6, D7); 170 | } 171 | } 172 | 173 | 174 | blk_count = camera->yres/I2SCamera::blockSlice;//30, 60, 120 175 | for (int i=0; istartBlock = 1; 179 | camera->endBlock = I2SCamera::blockSlice; 180 | webSocket.sendBIN(0, &start_flag, 1); 181 | } 182 | 183 | if (i == blk_count-1) { 184 | webSocket.sendBIN(0, &end_flag, 1); 185 | } 186 | 187 | camera->oneFrame(); 188 | webSocket.sendBIN(0, camera->frame, camera->xres * I2SCamera::blockSlice * 2); 189 | camera->startBlock += I2SCamera::blockSlice; 190 | camera->endBlock += I2SCamera::blockSlice; 191 | } 192 | 193 | break; 194 | case WStype_ERROR: // if new text data is received 195 | Serial.printf("Error \n"); 196 | default: 197 | Serial.printf("WStype %x not handled \n", type); 198 | 199 | } 200 | } 201 | void initWifiStation() { 202 | 203 | WiFi.mode(WIFI_AP_STA); 204 | WiFi.begin(ssid, password); 205 | Serial.print("\nConnecting to WiFi"); 206 | while (WiFi.status() != WL_CONNECTED) { 207 | delay(5000); 208 | Serial.print("."); 209 | } 210 | Serial.println(String("\nConnected to the WiFi network (") + ssid + ")" ); 211 | 212 | Serial.print("\nStation IP address: "); 213 | Serial.println(WiFi.localIP()); 214 | 215 | } 216 | 217 | void initWifiMulti() 218 | { 219 | 220 | wifiMulti.addAP(ssid_AP_1, pwd_AP_1); 221 | wifiMulti.addAP(ssid_AP_2, pwd_AP_2); 222 | wifiMulti.addAP(ssid_AP_3, pwd_AP_3); 223 | 224 | Serial.println("Connecting Wifi..."); 225 | while(wifiMulti.run() != WL_CONNECTED) { 226 | delay(5000); 227 | Serial.print("."); 228 | } 229 | 230 | Serial.print("\n"); 231 | Serial.print("WiFi connected : "); 232 | Serial.print("IP address : "); 233 | Serial.println(WiFi.localIP()); 234 | } 235 | 236 | void initWifiAP() { 237 | 238 | WiFi.mode(WIFI_AP_STA); 239 | WiFi.softAP(ap_ssid, ap_password); 240 | IPAddress myIP = WiFi.softAPIP(); 241 | Serial.print("AP IP address: "); 242 | Serial.println(myIP); 243 | } 244 | 245 | 246 | void setup() { 247 | Serial.begin(115200); 248 | initWifiMulti(); 249 | initWifiAP(); 250 | startWebSocket(); 251 | startWebServer(); 252 | } 253 | 254 | void loop() 255 | { 256 | webSocket.loop(); 257 | serve(); 258 | } 259 | 260 | 261 | 262 | -------------------------------------------------------------------------------- /I2SCamera.cpp: -------------------------------------------------------------------------------- 1 | //parts of his code are taken from 2 | //https://github.com/igrr/esp32-cam-demo 3 | //by Ivan Grokhotkov 4 | //released under Apache License 2.0 5 | 6 | #include "I2SCamera.h" 7 | #include "Log.h" 8 | #include 9 | #include 10 | #include 11 | 12 | int I2SCamera::blocksReceived = 0; 13 | int I2SCamera::framesReceived = 0; 14 | int I2SCamera::xres = 160; 15 | int I2SCamera::yres = 120; 16 | int I2SCamera::startBlock = 0; 17 | int I2SCamera::endBlock = 0; 18 | int I2SCamera::blockSlice = 0; 19 | 20 | 21 | gpio_num_t I2SCamera::vSyncPin = (gpio_num_t)0; 22 | intr_handle_t I2SCamera::i2sInterruptHandle = 0; 23 | intr_handle_t I2SCamera::vSyncInterruptHandle = 0; 24 | int I2SCamera::dmaBufferCount = 0; 25 | int I2SCamera::dmaBufferActive = 0; 26 | DMABuffer **I2SCamera::dmaBuffer = 0; 27 | unsigned char* I2SCamera::frame = 0; 28 | int I2SCamera::framePointer = 0; 29 | int I2SCamera::frameBytes = 0; 30 | volatile bool I2SCamera::stopSignal = false; 31 | 32 | void IRAM_ATTR I2SCamera::i2sInterrupt(void* arg) 33 | { 34 | I2S0.int_clr.val = I2S0.int_raw.val; 35 | blocksReceived++; 36 | unsigned char* buf = dmaBuffer[dmaBufferActive]->buffer; 37 | dmaBufferActive = (dmaBufferActive + 1) % dmaBufferCount; 38 | 39 | // 1-30, 31-60, 61-90 ..... 40 | 41 | if (blocksReceived >= startBlock && blocksReceived <= endBlock) { 42 | if(framePointer < frameBytes) { 43 | for(int i = 0; i < xres * 4; i += 4) 44 | { 45 | frame[framePointer++] = buf[i + 2]; 46 | frame[framePointer++] = buf[i]; 47 | } 48 | } 49 | } 50 | 51 | if (blocksReceived == yres) // default yres 52 | { 53 | //Serial.printf("frameBytes %d , framePointer %d, blocksReceived %d\n", frameBytes, framePointer, blocksReceived); 54 | framePointer = 0; 55 | blocksReceived = 0; 56 | framesReceived++; 57 | if(stopSignal) 58 | { 59 | i2sStop(); 60 | stopSignal = false; 61 | } 62 | } 63 | 64 | // i2sStop(); 65 | } 66 | 67 | void IRAM_ATTR I2SCamera::vSyncInterrupt(void* arg) 68 | { 69 | GPIO.status1_w1tc.val = GPIO.status1.val; 70 | GPIO.status_w1tc = GPIO.status; 71 | if(gpio_get_level(vSyncPin)) 72 | { 73 | //frame done 74 | } 75 | } 76 | 77 | void I2SCamera::i2sStop() 78 | { 79 | esp_intr_disable(i2sInterruptHandle); 80 | esp_intr_disable(vSyncInterruptHandle); 81 | i2sConfReset(); 82 | I2S0.conf.rx_start = 0; 83 | } 84 | 85 | void I2SCamera::i2sRun() 86 | { 87 | DEBUG_PRINTLN("I2S Run"); 88 | while (gpio_get_level(vSyncPin) == 0); 89 | while (gpio_get_level(vSyncPin) != 0); 90 | 91 | esp_intr_disable(i2sInterruptHandle); 92 | i2sConfReset(); 93 | blocksReceived = 0; 94 | dmaBufferActive = 0; 95 | framePointer = 0; 96 | DEBUG_PRINT("Sample count "); 97 | DEBUG_PRINTLN(dmaBuffer[0]->sampleCount()); 98 | I2S0.rx_eof_num = dmaBuffer[0]->sampleCount(); 99 | I2S0.in_link.addr = (uint32_t)&(dmaBuffer[0]->descriptor); 100 | I2S0.in_link.start = 1; 101 | I2S0.int_clr.val = I2S0.int_raw.val; 102 | I2S0.int_ena.val = 0; 103 | I2S0.int_ena.in_done = 1; 104 | esp_intr_enable(i2sInterruptHandle); 105 | esp_intr_enable(vSyncInterruptHandle); 106 | I2S0.conf.rx_start = 1; 107 | } 108 | 109 | bool I2SCamera::initVSync(int pin) 110 | { 111 | DEBUG_PRINT("Initializing VSYNC... "); 112 | vSyncPin = (gpio_num_t)pin; 113 | gpio_set_intr_type(vSyncPin, GPIO_INTR_POSEDGE); 114 | gpio_intr_enable(vSyncPin); 115 | if(gpio_isr_register(&vSyncInterrupt, (void*)"vSyncInterrupt", ESP_INTR_FLAG_INTRDISABLED | ESP_INTR_FLAG_IRAM, &vSyncInterruptHandle) != ESP_OK) 116 | { 117 | DEBUG_PRINTLN("failed!"); 118 | return false; 119 | } 120 | DEBUG_PRINTLN("done."); 121 | return true; 122 | } 123 | 124 | void I2SCamera::deinitVSync() 125 | { 126 | esp_intr_disable(vSyncInterruptHandle); 127 | } 128 | 129 | bool I2SCamera::init(const int XRES, const int YRES, const int VSYNC, const int HREF, const int XCLK, const int PCLK, const int D0, const int D1, const int D2, const int D3, const int D4, const int D5, const int D6, const int D7) 130 | { 131 | xres = XRES; 132 | yres = YRES; 133 | frameBytes = XRES * blockSlice * 2; 134 | 135 | if (frame) { 136 | free (frame); 137 | Serial.printf("frame memory freed\n"); 138 | } 139 | 140 | frame = (unsigned char*)malloc(frameBytes); 141 | if(!frame) 142 | { 143 | DEBUG_PRINTLN("Not enough memory for frame buffer!"); 144 | return false; 145 | } 146 | i2sInit(VSYNC, HREF, PCLK, D0, D1, D2, D3, D4, D5, D6, D7); 147 | dmaBufferInit(xres * 2 * 2); //two bytes per dword packing, two bytes per pixel 148 | initVSync(VSYNC); 149 | return true; 150 | } 151 | 152 | bool I2SCamera::i2sInit(const int VSYNC, const int HREF, const int PCLK, const int D0, const int D1, const int D2, const int D3, const int D4, const int D5, const int D6, const int D7) 153 | { 154 | int pins[] = {VSYNC, HREF, PCLK, D0, D1, D2, D3, D4, D5, D6, D7}; 155 | gpio_config_t conf = { 156 | .pin_bit_mask = 0, 157 | .mode = GPIO_MODE_INPUT, 158 | .pull_up_en = GPIO_PULLUP_DISABLE, 159 | .pull_down_en = GPIO_PULLDOWN_DISABLE, 160 | .intr_type = GPIO_INTR_DISABLE 161 | }; 162 | for (int i = 0; i < sizeof(pins) / sizeof(gpio_num_t); ++i) { 163 | conf.pin_bit_mask = 1LL << pins[i]; 164 | gpio_config(&conf); 165 | } 166 | 167 | // Route input GPIOs to I2S peripheral using GPIO matrix, last parameter is invert 168 | gpio_matrix_in(D0, I2S0I_DATA_IN0_IDX, false); 169 | gpio_matrix_in(D1, I2S0I_DATA_IN1_IDX, false); 170 | gpio_matrix_in(D2, I2S0I_DATA_IN2_IDX, false); 171 | gpio_matrix_in(D3, I2S0I_DATA_IN3_IDX, false); 172 | gpio_matrix_in(D4, I2S0I_DATA_IN4_IDX, false); 173 | gpio_matrix_in(D5, I2S0I_DATA_IN5_IDX, false); 174 | gpio_matrix_in(D6, I2S0I_DATA_IN6_IDX, false); 175 | gpio_matrix_in(D7, I2S0I_DATA_IN7_IDX, false); 176 | gpio_matrix_in(0x30, I2S0I_DATA_IN8_IDX, false); 177 | gpio_matrix_in(0x30, I2S0I_DATA_IN9_IDX, false); 178 | gpio_matrix_in(0x30, I2S0I_DATA_IN10_IDX, false); 179 | gpio_matrix_in(0x30, I2S0I_DATA_IN11_IDX, false); 180 | gpio_matrix_in(0x30, I2S0I_DATA_IN12_IDX, false); 181 | gpio_matrix_in(0x30, I2S0I_DATA_IN13_IDX, false); 182 | gpio_matrix_in(0x30, I2S0I_DATA_IN14_IDX, false); 183 | gpio_matrix_in(0x30, I2S0I_DATA_IN15_IDX, false); 184 | 185 | gpio_matrix_in(VSYNC, I2S0I_V_SYNC_IDX, true); 186 | gpio_matrix_in(0x38, I2S0I_H_SYNC_IDX, false); //0x30 sends 0, 0x38 sends 1 187 | gpio_matrix_in(HREF, I2S0I_H_ENABLE_IDX, false); 188 | gpio_matrix_in(PCLK, I2S0I_WS_IN_IDX, false); 189 | 190 | // Enable and configure I2S peripheral 191 | periph_module_enable(PERIPH_I2S0_MODULE); 192 | 193 | // Toggle some reset bits in LC_CONF register 194 | // Toggle some reset bits in CONF register 195 | i2sConfReset(); 196 | // Enable slave mode (sampling clock is external) 197 | I2S0.conf.rx_slave_mod = 1; 198 | // Enable parallel mode 199 | I2S0.conf2.lcd_en = 1; 200 | // Use HSYNC/VSYNC/HREF to control sampling 201 | I2S0.conf2.camera_en = 1; 202 | // Configure clock divider 203 | I2S0.clkm_conf.clkm_div_a = 1; 204 | I2S0.clkm_conf.clkm_div_b = 0; 205 | I2S0.clkm_conf.clkm_div_num = 2; 206 | // FIFO will sink data to DMA 207 | I2S0.fifo_conf.dscr_en = 1; 208 | // FIFO configuration 209 | //two bytes per dword packing 210 | I2S0.fifo_conf.rx_fifo_mod = SM_0A0B_0C0D; //pack two bytes in one dword see :https://github.com/igrr/esp32-cam-demo/issues/29 211 | I2S0.fifo_conf.rx_fifo_mod_force_en = 1; 212 | I2S0.conf_chan.rx_chan_mod = 1; 213 | // Clear flags which are used in I2S serial mode 214 | I2S0.sample_rate_conf.rx_bits_mod = 0; 215 | I2S0.conf.rx_right_first = 0; 216 | I2S0.conf.rx_msb_right = 0; 217 | I2S0.conf.rx_msb_shift = 0; 218 | I2S0.conf.rx_mono = 0; 219 | I2S0.conf.rx_short_sync = 0; 220 | I2S0.timing.val = 0; 221 | 222 | // Allocate I2S interrupt, keep it disabled 223 | esp_intr_alloc(ETS_I2S0_INTR_SOURCE, ESP_INTR_FLAG_INTRDISABLED | ESP_INTR_FLAG_LEVEL1 | ESP_INTR_FLAG_IRAM, &i2sInterrupt, NULL, &i2sInterruptHandle); 224 | return true; 225 | } 226 | 227 | void I2SCamera::dmaBufferInit(int bytes) 228 | { 229 | dmaBufferDeinit(); 230 | 231 | dmaBufferCount = 2; 232 | dmaBuffer = (DMABuffer**) malloc(sizeof(DMABuffer*) * dmaBufferCount); 233 | for(int i = 0; i < dmaBufferCount; i++) 234 | { 235 | dmaBuffer[i] = new DMABuffer(bytes); 236 | if(i) 237 | dmaBuffer[i-1]->next(dmaBuffer[i]); 238 | } 239 | dmaBuffer[dmaBufferCount - 1]->next(dmaBuffer[0]); 240 | } 241 | 242 | void I2SCamera::dmaBufferDeinit() 243 | { 244 | 245 | if (!dmaBuffer) return; 246 | for(int i = 0; i < dmaBufferCount; i++) 247 | delete(dmaBuffer[i]); 248 | delete(dmaBuffer); 249 | dmaBuffer = 0; 250 | dmaBufferCount = 0; 251 | 252 | Serial.printf("dma buffer memory freed\n"); 253 | } 254 | -------------------------------------------------------------------------------- /OV7670.cpp: -------------------------------------------------------------------------------- 1 | #include "OV7670.h" 2 | #include "XClk.h" 3 | #include "Log.h" 4 | 5 | OV7670::OV7670(Mode m, const int SIOD, const int SIOC, const int VSYNC, const int HREF, const int XCLK, const int PCLK, const int D0, const int D1, const int D2, const int D3, const int D4, const int D5, const int D6, const int D7) 6 | :i2c(SIOD, SIOC) 7 | { 8 | ClockEnable(XCLK, 20000000); //base is 80MHz 9 | 10 | DEBUG_PRINT("Waiting for VSYNC..."); 11 | pinMode(VSYNC, INPUT); 12 | while(!digitalRead(VSYNC)); 13 | while(digitalRead(VSYNC)); 14 | DEBUG_PRINTLN(" done"); 15 | 16 | mode = m; 17 | switch(mode) 18 | { 19 | 20 | case VGA_RGB565: 21 | blockSlice = 60; 22 | xres = 640; 23 | yres = 480; 24 | VGARGB565(); 25 | 26 | break; 27 | 28 | case QVGA_RGB565: 29 | blockSlice = 120; 30 | xres = 320; 31 | yres = 240; 32 | QVGARGB565(); 33 | break; 34 | 35 | case QQVGA_RGB565: 36 | blockSlice = 120; 37 | xres = 160; 38 | yres = 120; 39 | QQVGARGB565(); 40 | break; 41 | 42 | case QQQVGA_RGB565: 43 | blockSlice = 60; 44 | xres = 80; 45 | yres = 60; 46 | QQQVGARGB565(); 47 | break; 48 | 49 | default: 50 | xres = 0; 51 | yres = 0; 52 | } 53 | //testImage(); 54 | I2SCamera::init(xres, yres, VSYNC, HREF, XCLK, PCLK, D0, D1, D2, D3, D4, D5, D6, D7); 55 | } 56 | 57 | void OV7670::testImage() 58 | { 59 | i2c.writeRegister(ADDR, 0x71, 0x35 | 0x80); 60 | } 61 | 62 | void OV7670::saturation(int s) //-2 to 2 63 | { 64 | //color matrix values 65 | i2c.writeRegister(ADDR, 0x4f, 0x80 + 0x20 * s); 66 | i2c.writeRegister(ADDR, 0x50, 0x80 + 0x20 * s); 67 | i2c.writeRegister(ADDR, 0x51, 0x00); 68 | i2c.writeRegister(ADDR, 0x52, 0x22 + (0x11 * s) / 2); 69 | i2c.writeRegister(ADDR, 0x53, 0x5e + (0x2f * s) / 2); 70 | i2c.writeRegister(ADDR, 0x54, 0x80 + 0x20 * s); 71 | i2c.writeRegister(ADDR, 0x58, 0x9e); //matrix signs 72 | } 73 | 74 | void OV7670::frameControl(int hStart, int hStop, int vStart, int vStop) 75 | { 76 | i2c.writeRegister(ADDR, REG_HSTART, hStart >> 3); 77 | i2c.writeRegister(ADDR, REG_HSTOP, hStop >> 3); 78 | i2c.writeRegister(ADDR, REG_HREF, ((hStop & 0b111) << 3) | (hStart & 0b111)); 79 | 80 | i2c.writeRegister(ADDR, REG_VSTART, vStart >> 2); 81 | i2c.writeRegister(ADDR, REG_VSTOP, vStop >> 2); 82 | i2c.writeRegister(ADDR, REG_VREF, ((vStop & 0b11) << 2) | (vStart & 0b11)); 83 | } 84 | 85 | /////////////////////////////////////// 86 | 87 | 88 | void OV7670::QVGA() 89 | { 90 | i2c.writeRegister(ADDR, REG_COM3, 0x04); //DCW enable -- done 91 | i2c.writeRegister(ADDR, REG_COM14, 0x19); //pixel clock divided by 4, manual scaling enable, DCW and PCLK controlled by register -- done 92 | i2c.writeRegister(ADDR, REG_SCALING_XSC, 0x3a); // -- done 93 | i2c.writeRegister(ADDR, REG_SCALING_YSC, 0x35); // -- done 94 | i2c.writeRegister(ADDR, REG_SCALING_DCWCTR, 0x11); //downsample by 2 95 | i2c.writeRegister(ADDR, REG_SCALING_PCLK_DIV, 0xf1); //pixel clock divided by 8 96 | i2c.writeRegister(ADDR, REG_SCALING_PCLK_DELAY, 0x02); 97 | } 98 | 99 | void OV7670::VGA() 100 | { 101 | i2c.writeRegister(ADDR, REG_COM3, 0x0); //DCW enable -- done 102 | // i2c.writeRegister(ADDR, REG_COM14, 0x19); //pixel clock divided by 4, manual scaling enable, DCW and PCLK controlled by register -- done 103 | i2c.writeRegister(ADDR, REG_COM14, 0); //pixel clock divided by 4, manual scaling enable, DCW and PCLK controlled by register -- done 104 | // i2c.writeRegister(ADDR, REG_SCALING_XSC, 0x3a); // -- done 105 | // i2c.writeRegister(ADDR, REG_SCALING_YSC, 0x35); // -- done 106 | // i2c.writeRegister(ADDR, REG_SCALING_DCWCTR, 0x11); //downsample by 2 107 | // i2c.writeRegister(ADDR, REG_SCALING_PCLK_DIV, 0xf0); //pixel clock divided by 8 108 | // i2c.writeRegister(ADDR, REG_SCALING_PCLK_DELAY, 0x02); 109 | } 110 | 111 | 112 | void OV7670::VGARGB565() 113 | { 114 | i2c.writeRegister(ADDR, REG_COM7, 0b10000000); //all registers default 115 | 116 | i2c.writeRegister(ADDR, REG_CLKRC, 0b10000000); //double clock 117 | i2c.writeRegister(ADDR, REG_COM11, 0b1000 | 0b10); //enable auto 50/60Hz detect + exposure timing can be less... 118 | 119 | i2c.writeRegister(ADDR, REG_COM7, 0b100); //RGB 120 | i2c.writeRegister(ADDR, REG_COM15, 0b11000000 | 0b010000); //RGB565 121 | 122 | /* 123 | i2c.writeRegister(ADDR, REG_COM7, 0b10000000); //all registers default 124 | 125 | i2c.writeRegister(ADDR, REG_CLKRC, 0b10000000); //double clock 126 | i2c.writeRegister(ADDR, REG_COM11, 0b1000 | 0b10); //enable auto 50/60Hz detect + exposure timing can be less... 127 | 128 | i2c.writeRegister(ADDR, REG_COM7, 0b100); //RGB 129 | i2c.writeRegister(ADDR, REG_COM15, 0b11000000 | 0b010000); //RGB565 130 | */ 131 | VGA(); 132 | 133 | // hstart, hstop, vstart, vstop 134 | frameControl(168, 24, 12, 492); //no clue why horizontal needs such strange values, vertical works ok 135 | 136 | //i2c.writeRegister(ADDR, REG_COM10, 0x02); //VSYNC negative 137 | //i2c.writeRegister(ADDR, REG_MVFP, 0x2b); //mirror flip 138 | 139 | i2c.writeRegister(ADDR, 0xb0, 0x84);// no clue what this is but it's most important for colors 140 | saturation(0); 141 | i2c.writeRegister(ADDR, 0x13, 0xe7); //AWB on 142 | i2c.writeRegister(ADDR, 0x6f, 0x9f); // Simple AWB 143 | } 144 | 145 | 146 | void OV7670::QVGARGB565() 147 | { 148 | i2c.writeRegister(ADDR, REG_COM7, 0b10000000); //all registers default 149 | 150 | i2c.writeRegister(ADDR, REG_CLKRC, 0b10000000); //double clock 151 | i2c.writeRegister(ADDR, REG_COM11, 0b1000 | 0b10); //enable auto 50/60Hz detect + exposure timing can be less... 152 | 153 | i2c.writeRegister(ADDR, REG_COM7, 0b100); //RGB 154 | i2c.writeRegister(ADDR, REG_COM15, 0b11000000 | 0b010000); //RGB565 155 | 156 | QVGA(); 157 | 158 | // hstart, hstop, vstart, vstop 159 | frameControl(168, 24, 12, 492); //no clue why horizontal needs such strange values, vertical works ok 160 | 161 | //i2c.writeRegister(ADDR, REG_COM10, 0x02); //VSYNC negative 162 | //i2c.writeRegister(ADDR, REG_MVFP, 0x2b); //mirror flip 163 | 164 | i2c.writeRegister(ADDR, 0xb0, 0x84);// no clue what this is but it's most important for colors 165 | saturation(0); 166 | i2c.writeRegister(ADDR, 0x13, 0xe7); //AWB on 167 | i2c.writeRegister(ADDR, 0x6f, 0x9f); // Simple AWB 168 | } 169 | 170 | 171 | 172 | 173 | 174 | 175 | //////////////////////////////////// 176 | void OV7670::QQQVGA() 177 | { 178 | i2c.writeRegister(ADDR, REG_COM3, 0x04); //DCW enable 179 | i2c.writeRegister(ADDR, REG_COM14, 0x1b); //pixel clock divided by 4, manual scaling enable, DCW and PCLK controlled by register 180 | i2c.writeRegister(ADDR, REG_SCALING_XSC, 0x3a); 181 | i2c.writeRegister(ADDR, REG_SCALING_YSC, 0x35); 182 | i2c.writeRegister(ADDR, REG_SCALING_DCWCTR, 0x33); //downsample by 8 183 | i2c.writeRegister(ADDR, REG_SCALING_PCLK_DIV, 0xf3); //pixel clock divided by 8 184 | i2c.writeRegister(ADDR, REG_SCALING_PCLK_DELAY, 0x02); 185 | } 186 | 187 | void OV7670::QQVGA() 188 | { 189 | //160x120 (1/4) 190 | //i2c.writeRegister(ADDR, REG_CLKRC, 0x01); 191 | i2c.writeRegister(ADDR, REG_COM3, 0x04); //DCW enable 192 | 193 | i2c.writeRegister(ADDR, REG_COM14, 0x1a); //pixel clock divided by 4, manual scaling enable, DCW and PCLK controlled by register 194 | i2c.writeRegister(ADDR, REG_SCALING_XSC, 0x3a); 195 | i2c.writeRegister(ADDR, REG_SCALING_YSC, 0x35); 196 | 197 | i2c.writeRegister(ADDR, REG_SCALING_DCWCTR, 0x22); //downsample by 4 198 | i2c.writeRegister(ADDR, REG_SCALING_PCLK_DIV, 0xf2); //pixel clock divided by 4 199 | i2c.writeRegister(ADDR, REG_SCALING_PCLK_DELAY, 0x02); 200 | } 201 | 202 | void OV7670::QQVGARGB565() 203 | { 204 | i2c.writeRegister(ADDR, REG_COM7, 0b10000000); //all registers default 205 | 206 | i2c.writeRegister(ADDR, REG_CLKRC, 0b10000000); //double clock 207 | i2c.writeRegister(ADDR, REG_COM11, 0b1000 | 0b10); //enable auto 50/60Hz detect + exposure timing can be less... 208 | 209 | i2c.writeRegister(ADDR, REG_COM7, 0b100); //RGB 210 | i2c.writeRegister(ADDR, REG_COM15, 0b11000000 | 0b010000); //RGB565 211 | 212 | QQVGA(); 213 | 214 | frameControl(196, 52, 8, 488); //no clue why horizontal needs such strange values, vertical works ok 215 | 216 | //i2c.writeRegister(ADDR, REG_COM10, 0x02); //VSYNC negative 217 | //i2c.writeRegister(ADDR, REG_MVFP, 0x2b); //mirror flip 218 | 219 | i2c.writeRegister(ADDR, 0xb0, 0x84);// no clue what this is but it's most important for colors 220 | saturation(0); 221 | i2c.writeRegister(ADDR, 0x13, 0xe7); //AWB on 222 | i2c.writeRegister(ADDR, 0x6f, 0x9f); // Simple AWB 223 | } 224 | 225 | void OV7670::QQQVGARGB565() 226 | { 227 | i2c.writeRegister(ADDR, REG_COM7, 0b10000000); //all registers default 228 | 229 | i2c.writeRegister(ADDR, REG_CLKRC, 0b10000000); //double clock 230 | i2c.writeRegister(ADDR, REG_COM11, 0b1000 | 0b10); //enable auto 50/60Hz detect + exposure timing can be less... 231 | 232 | i2c.writeRegister(ADDR, REG_COM7, 0b100); //RGB 233 | i2c.writeRegister(ADDR, REG_COM15, 0b11000000 | 0b010000); //RGB565 234 | 235 | QQQVGA(); 236 | 237 | frameControl(196, 52, 8, 488); //no clue why horizontal needs such strange values, vertical works ok 238 | 239 | //i2c.writeRegister(ADDR, REG_MVFP, 0x2b); //mirror flip 240 | 241 | i2c.writeRegister(ADDR, 0xb0, 0x84);// no clue what this is but it's most important for colors 242 | saturation(0); 243 | i2c.writeRegister(ADDR, 0x13, 0xe7); //AWB on 244 | i2c.writeRegister(ADDR, 0x6f, 0x9f); // Simple AWB 245 | } 246 | 247 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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The text should be enclosed in the appropriate 184 | comment syntax for the file format. We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /canvas_htm.h: -------------------------------------------------------------------------------- 1 | static const char canvas_htm[] PROGMEM = "\n"\ 2 | "\n"\ 3 | "\n"\ 4 | "\n"\ 5 | " ESP32-OV7670 - Websocket Demo By Mudassar Tamboli \n"\ 6 | "\n"\ 226 | "\n"\ 227 | "\n"\ 228 | "\n"\ 229 | "
Connecting Camera ...\n"\ 240 | "
\n"\ 241 | "\n"\ 242 | "

ESP32-OV7670 Websocket Video Camera

\n"\ 243 | "\n"\ 244 | "\n"\ 245 | "\n"\ 246 | " \n"\ 247 | " \n"\ 252 | "\n"\ 253 | " \n"\ 258 | "\n"\ 259 | " \n"\ 264 | " \n"\ 271 | " \n"\ 272 | "\n"\ 273 | " \n"\ 274 | " \n"\ 277 | "\n"\ 278 | " \n"\ 281 | " \n"\ 282 | " \n"\ 285 | " \n"\ 286 | " \n"\ 291 | " \n"\ 292 | "\n"\ 293 | "\n"\ 294 | "
\n"\ 248 | "\n"\ 249 | "Your browser does not support the HTML5 canvas tag.\n"\ 250 | "\n"\ 251 | " \n"\ 254 | "\n"\ 255 | "Your browser does not support the HTML5 canvas tag.\n"\ 256 | "\n"\ 257 | " \n"\ 260 | "\n"\ 261 | "Your browser does not support the HTML5 canvas tag.\n"\ 262 | "\n"\ 263 | "
\n"\ 275 | " QQQ-VGA
\n"\ 276 | " 		\n"\ 279 | " QQ-VGA
\n"\ 280 | " 		\n"\ 283 | " Q-VGA
\n"\ 284 | "
\n"\ 295 | "

\n"\ 296 | "\n"\ 297 | " \n"\ 298 | " \n"\ 299 | " \n"\ 300 | "\n"\ 301 | " \n"\ 302 | " \n"\ 303 | " \n"\ 304 | " \n"\ 305 | "\n"\ 306 | " \n"\ 307 | " \n"\ 308 | " \n"\ 309 | " \n"\ 310 | " \n"\ 311 | "
Websocket not connected
AP IP WiFi IP
192.168.4.1
\n"\ 312 | "\n"\ 313 | "\n"\ 314 | "\n"\ 315 | "\n"\ 316 | "\n"; 317 | 318 | --------------------------------------------------------------------------------