kopia lustrzana https://github.com/alanesq/esp32cam-demo
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Alan
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683b75752b
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f865652e41
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@ -11,7 +11,7 @@
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* GPIO:
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* You can use io pins 13 and 12 for input or output (but 12 must not be high at boot)
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* pin 16 is used for psram but you may get away with using it as input for a button etc.
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* You could also use pins 1 & 3 for if you do not use Serial
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* You could also use pins 1 & 3 if you do not use Serial
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* Pins 14, 2 & 15 should be ok to use if you are not using an SD Card
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* Other possible pins you could solder directly to the esp32 module? 17, 9, 10, 11, 6, 7, 8
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* More info: https://randomnerdtutorials.com/esp32-cam-ai-thinker-pinout/
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@ -42,11 +42,11 @@
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// ---------------------------------------------------------------
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// Wifi settings (enter your wifi network details)
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const char* ssid = "<your wifi network name here>";
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const char* password = "<your wifi password here>";
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const char* ssid = "<your wifi network name here>";
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const char* password = "<your wifi password here>";
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const char* stitle = "ESP32Cam-demo"; // title of this sketch
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const char* sversion = "14Nov20"; // Sketch version
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const char* sversion = "26Nov20"; // Sketch version
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const bool debugInfo = 1; // show additional debug info. on serial port (1=enabled)
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@ -732,13 +732,14 @@ void handleNotFound() {
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// If this is all that is sent then it will download to the client as a raw RGB file which you can then view using this
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// Processing sketch: https://github.com/alanesq/esp32cam-demo/blob/master/Misc/displayRGB.pde
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// You may want to disable auto white balance when experimenting with RGB otherwise the camera is always trying to adjust the
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// image colours to mainly white. (disable in the 'camera settings' procedure).
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// image colours to mainly white. (disable in the 'cameraImageSettings' procedure).
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// It will fail on the highest resolution (1600x1200) as it requires more than the 4mb of available psram to store the data (1600x1200x3 bytes)
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// I discovered how to do this from: https://github.com/Makerfabs/Project_Touch-Screen-Camera/blob/master/Camera_v2/Camera_v2.ino
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// - I discovered how to read the RGB data from: https://github.com/Makerfabs/Project_Touch-Screen-Camera/blob/master/Camera_v2/Camera_v2.ino
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void readRGBImage() {
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WiFiClient client = server.client(); // open link with client
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uint32_t tTimer; // used for timing operations
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WiFiClient client = server.client(); // open link with client
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// log page request including clients IP address
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if (debugInfo) {
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@ -747,46 +748,46 @@ void readRGBImage() {
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}
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// html header
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client.write("<!DOCTYPE html> <html lang='en'> <head> <title>photo</title> </head> <body>\n"); // basic html header
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client.write("<!DOCTYPE html> <html lang='en'> <head> <title>photo</title> </head> <body>\n"); // basic html header
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MessageRGB(client,"LIVE IMAGE AS RGB DATA"); // 'MessageRGB' sends the String to both serial port and web page
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MessageRGB(client,"Starting RGB procedure at millis=" + String(millis())); // so you can see how long it takes to execute this code
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// ****** main code for converting captured image to RGB *****
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MessageRGB(client,"LIVE IMAGE AS RGB DATA"); // 'MessageRGB' sends the String to both serial port and web page
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// capture a live image from camera (jpg)
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// ****** the main code for converting an image to RGB data *****
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// capture a live image from camera (as a jpg)
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camera_fb_t * fb = NULL;
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tTimer = millis(); // store time that image capture started
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fb = esp_camera_fb_get();
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MessageRGB(client, "Image capture took " + String(millis() - tTimer) + " milliseconds"); // report time it took to capture an image
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if (!fb) MessageRGB(client," -error capturing image from camera- ");
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MessageRGB(client,"Image resolution=" + String(fb->width) + "x" + String(fb->height)); // display image resolution
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// allocate memory to store rgb data (in psram)
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// allocate memory to store the rgb data (in psram, 3 bytes per pixel)
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if (!psramFound()) MessageRGB(client," -error no psram found- ");
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MessageRGB(client,"Free psram before rgb data stored = " + String(heap_caps_get_free_size(MALLOC_CAP_SPIRAM)));
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void *ptrVal = NULL; // create a pointer for memory location to store the data
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uint32_t ARRAY_LENGTH = fb->width * fb->height * 3; // calculate memory required to store the RGB data (i.e. number of pixels in the jpg image x 3)
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void *ptrVal = NULL; // create a pointer for memory location to store the data
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uint32_t ARRAY_LENGTH = fb->width * fb->height * 3; // calculate memory required to store the RGB data (i.e. number of pixels in the jpg image x 3)
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if (heap_caps_get_free_size( MALLOC_CAP_SPIRAM) < ARRAY_LENGTH) MessageRGB(client," -error: not enough free psram to store the rgb data- ");
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ptrVal = heap_caps_malloc(ARRAY_LENGTH, MALLOC_CAP_SPIRAM); // allocate memory space for the rgb data
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uint8_t *rgb = (uint8_t *)ptrVal; // create the 'rgb' array pointer to the allocated memory space
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ptrVal = heap_caps_malloc(ARRAY_LENGTH, MALLOC_CAP_SPIRAM); // allocate memory space for the rgb data
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uint8_t *rgb = (uint8_t *)ptrVal; // create the 'rgb' array pointer to the allocated memory space
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MessageRGB(client,"Free psram after rgb data stored = " + String(heap_caps_get_free_size(MALLOC_CAP_SPIRAM)));
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// convert the captured jpg image (fb) to rgb data (stored in 'rgb' array)
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// convert the captured jpg image (fb) to rgb data (store in 'rgb' array)
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tTimer = millis(); // store time that image conversion process started
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bool jpeg_converted = fmt2rgb888(fb->buf, fb->len, PIXFORMAT_JPEG, rgb);
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if (!jpeg_converted) MessageRGB(client," -error converting image to RGB- ");
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MessageRGB(client, "Conversion from jpg to RGB took " + String(millis() - tTimer) + " milliseconds");// report how long the conversion took
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// ****** examples of reading the resulting RGB data *****
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// display some of the resulting data
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uint32_t resultsToShow = 50; // how much data to display
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uint32_t resultsToShow = 60; // how much data to display
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MessageRGB(client,"R , G , B");
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for (uint32_t i = 0; i < resultsToShow-2; i+=3) {
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MessageRGB(client,String(rgb[i+2]) + "," + String(rgb[i+1]) + "," + String(rgb[i+0])); // Red , Green , Blue
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MessageRGB(client,String(rgb[i+2]) + "," + String(rgb[i+1]) + "," + String(rgb[i+0])); // Red , Green , Blue
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// // calculate the x and y coordinate of the current pixel
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// uint16_t x = (i / 3) % fb->width;
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// uint16_t y = floor( (i / 3) / fb->width);
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@ -796,12 +797,12 @@ void readRGBImage() {
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uint32_t aRed = 0;
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uint32_t aGreen = 0;
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uint32_t aBlue = 0;
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for (uint32_t i = 0; i < (ARRAY_LENGTH - 2); i+=3) { // go through all data and add up totals
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for (uint32_t i = 0; i < (ARRAY_LENGTH - 2); i+=3) { // go through all data and add up totals
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aBlue+=rgb[i];
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aGreen+=rgb[i+1];
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aRed+=rgb[i+2];
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}
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aRed = aRed / (fb->width * fb->height); // divide total by number of pixels to give the average value
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aRed = aRed / (fb->width * fb->height); // divide total by number of pixels to give the average value
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aGreen = aGreen / (fb->width * fb->height);
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aBlue = aBlue / (fb->width * fb->height);
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MessageRGB(client,"Average Blue = " + String(aBlue));
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@ -810,9 +811,7 @@ void readRGBImage() {
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// *******************************************************
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MessageRGB(client,"Finishing RGB procedure at millis=" + String(millis()));
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// end html
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client.write("</body></html>\n");
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@ -892,6 +891,64 @@ void handleStream(){
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} // handleStream
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// ******************************************************************************************************************
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// ----------------------------------------------------------------
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// request a web page
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// ----------------------------------------------------------------
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// Requests a web page and returns the result as a String
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// parameters = ip address, page to request, port to use (usually 80) e.g. "alanesq.com","/index.htm",80
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String requestpage(const char* ip, String page, int port){
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if (debugInfo) Serial.print("requesting web page: ");
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if (debugInfo) Serial.println(page);
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//log_system_message("requesting web page"); // system message
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// Connect to the site
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WiFiClient client;
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if (!client.connect(ip, port)) {
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if (debugInfo) Serial.println("Connection failed :-(");
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//log_system_message("web connection failed"); // system message
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return "connection failed";
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}
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if (debugInfo) Serial.println("Connected to host - sending request...");
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client.print(String("GET " + page + " HTTP/1.1\r\n") +
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"Host: " + ip + "\r\n" +
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"Connection: close\r\n\r\n");
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if (debugInfo) Serial.println("Request sent - waiting for reply...");
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//Wait up to 2 seconds for server to respond then read response
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int i = 0;
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while ((!client.available()) && (i < 200)) {
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delay(10);
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i++;
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}
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// if reply received
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// info on receiving serial data: https://forum.arduino.cc/index.php?topic=396450.
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String wpage = "no reply received";
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if (client.available()) {
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client.setTimeout(1200); // timeout for readString() command
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wpage = client.readString(); // just read all incoming data until timeout is reached - info on receiving serial data: https://forum.arduino.cc/index.php?topic=396450.0
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if (debugInfo) {
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Serial.println("--------received web page-----------");
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Serial.println(wpage);
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Serial.println("------------------------------------");
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Serial.flush(); // wait for data to finish sending
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}
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}
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client.stop(); // close connection
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if (debugInfo) Serial.println("Connection closed.");
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return wpage;
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}
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// ******************************************************************************************************************
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@ -916,7 +973,7 @@ void handleTest() {
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// html body
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client.print("<p>Test Page</p>\n");
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client.print("<h1>Test Page</h1>\n");
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