kopia lustrzana https://github.com/alanesq/esp32cam-demo
Update esp32cam-demo.ino
Alan
GitHub
rodzic
a3b28117ab
commit
518899b4fc
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@ -76,6 +76,7 @@
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void handleTest();
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void brightLed(byte ledBrightness);
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void setupFlashPWM();
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void changeResolution(framesize_t);
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// ---------------------------------------------------------------
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@ -83,7 +84,7 @@
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// ---------------------------------------------------------------
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const char* stitle = "ESP32Cam-demo"; // title of this sketch
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const char* sversion = "19Jan22"; // Sketch version
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const char* sversion = "20Jan22"; // Sketch version
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bool sendRGBfile = 0; // if set '/rgb' will just return raw rgb data which can be saved as a file rather than display a HTML pag
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@ -524,12 +525,12 @@ bool cameraImageSettings() {
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// ******************************************************************************************************************
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// ----------------------------------------------------------------
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// Misc small procedures
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// ----------------------------------------------------------------
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// Misc small procedures
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// set up PWM for the illumination LED (flash)
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// ----------------------------------------------------------------
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// set up PWM for the illumination LED (flash)
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// ----------------------------------------------------------------
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// note: I am not sure PWM is very reliable on the esp32cam - requires more testing
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void setupFlashPWM() {
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ledcSetup(ledChannel, ledFreq, ledRresolution);
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@ -537,6 +538,7 @@ void setupFlashPWM() {
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brightLed(brightLEDbrightness);
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}
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// change illumination LED brightness
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void brightLed(byte ledBrightness){
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brightLEDbrightness = ledBrightness; // store setting
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@ -545,7 +547,9 @@ void setupFlashPWM() {
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}
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// returns the current real time as a String
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// ----------------------------------------------------------------
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// returns the current real time as a String
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// ----------------------------------------------------------------
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// see: https://randomnerdtutorials.com/esp32-date-time-ntp-client-server-arduino/
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String localTime() {
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struct tm timeinfo;
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@ -556,7 +560,9 @@ String localTime() {
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}
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// flash the indicator led 'reps' number of times
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// ----------------------------------------------------------------
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// flash the indicator led 'reps' number of times
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// ----------------------------------------------------------------
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void flashLED(int reps) {
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for(int x=0; x < reps; x++) {
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digitalWrite(indicatorLED,LOW);
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@ -567,7 +573,9 @@ void flashLED(int reps) {
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}
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// send a standard html header (i.e. start of web page)
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// ----------------------------------------------------------------
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// send a standard html header (i.e. start of web page)
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// ----------------------------------------------------------------
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void sendHeader(WiFiClient &client, String wTitle) {
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client.write("HTTP/1.1 200 OK\r\n");
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client.write("Content-Type: text/html\r\n");
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@ -581,7 +589,9 @@ void sendHeader(WiFiClient &client, String wTitle) {
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}
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// send a standard html footer (i.e. end of web page)
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// ----------------------------------------------------------------
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// send a standard html footer (i.e. end of web page)
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// ----------------------------------------------------------------
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void sendFooter(WiFiClient &client) {
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client.write("</body></html>\n");
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delay(3);
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@ -589,14 +599,18 @@ void sendFooter(WiFiClient &client) {
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}
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// send line of text to both serial port and web page - used by readRGBImage
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// ----------------------------------------------------------------
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// send line of text to both serial port and web page - used by readRGBImage
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// ----------------------------------------------------------------
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void sendText(WiFiClient &client, String theText) {
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if (!sendRGBfile) client.print(theText + "<br>\n");
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if (serialDebug || theText.indexOf("error") > 0) Serial.println(theText); // if text contains "error"
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}
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// reset the camera example - see handleTest() for example
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// ----------------------------------------------------------------
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// reset the camera example - see handleTest() for example
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// ----------------------------------------------------------------
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void resetCamera() {
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// power cycle the camera module (handy if camera stops responding)
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digitalWrite(PWDN_GPIO_NUM, HIGH); // turn power off to camera module
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@ -610,6 +624,26 @@ void resetCamera() {
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}
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// ----------------------------------------------------------------
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// -change image resolution
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// ----------------------------------------------------------------
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// if required resolution not supplied it cycles through several
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// note: this stops PWM on the flash working for some reason
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void changeResolution(framesize_t tRes = FRAMESIZE_96X96) {
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esp_camera_deinit(); // disable camera
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delay(50);
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if (tRes == FRAMESIZE_96X96) { // taken as none supplied so cycle through several
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if (FRAME_SIZE_IMAGE == FRAMESIZE_QVGA) tRes = FRAMESIZE_VGA;
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else if (FRAME_SIZE_IMAGE == FRAMESIZE_VGA) tRes = FRAMESIZE_XGA;
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else if (FRAME_SIZE_IMAGE == FRAMESIZE_XGA) tRes = FRAMESIZE_UXGA;
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else tRes = FRAMESIZE_QVGA;
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}
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FRAME_SIZE_IMAGE = tRes;
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initialiseCamera();
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if (serialDebug) Serial.println("Camera resolution changed to " + String(tRes));
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}
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// ******************************************************************************************************************
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@ -717,7 +751,7 @@ void handleRoot() {
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digitalWrite(iopinB,!digitalRead(iopinB)); // toggle output pin on/off
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}
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// if button3 was pressed (toggle flash LED)
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// if button2 was pressed (toggle flash LED)
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if (server.hasArg("button2")) {
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if (serialDebug) Serial.println("Button 2 pressed");
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if (brightLEDbrightness == 0) brightLed(10); // turn led on dim
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@ -726,7 +760,7 @@ void handleRoot() {
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else brightLed(0); // turn led off
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}
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// if button4 was pressed (format SPIFFS)
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// if button3 was pressed (format SPIFFS)
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if (server.hasArg("button3")) {
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if (serialDebug) Serial.println("Button 3 pressed");
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if (!SPIFFS.format()) {
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@ -736,6 +770,12 @@ void handleRoot() {
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}
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}
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// if button4 was pressed (change resolution)
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if (server.hasArg("button4")) {
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if (serialDebug) Serial.println("Button 4 pressed");
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changeResolution(); // cycle through some options
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}
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// if exposure was adjusted - cameraImageExposure
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if (server.hasArg("exp")) {
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if (serialDebug) Serial.println("Exposure has been changed");
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@ -807,7 +847,8 @@ void handleRoot() {
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// Control bottons
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client.write("<input style='height: 35px;' name='button1' value='Toggle pin 12' type='submit'> \n");
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client.write("<input style='height: 35px;' name='button2' value='Toggle Flash' type='submit'> \n");
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client.write("<input style='height: 35px;' name='button3' value='Wipe SPIFFS memory' type='submit'><br> \n");
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client.write("<input style='height: 35px;' name='button3' value='Wipe SPIFFS memory' type='submit'> \n");
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client.write("<input style='height: 35px;' name='button4' value='Change Resolution' type='submit'><br> \n");
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// Image setting controls
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client.write("<br>CAMERA SETTINGS: \n");
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@ -1062,7 +1103,10 @@ void readRGBImage() {
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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) {
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sendText(client,"error: not enough free psram to store the rgb data");
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if (!sendRGBfile) sendFooter(client); // close web page
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if (!sendRGBfile) {
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client.write("<br><a href='/'>Return</a>\n"); // link back
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sendFooter(client); // close web page
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}
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return;
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}
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ptrVal = heap_caps_malloc(ARRAY_LENGTH, MALLOC_CAP_SPIRAM); // allocate memory space for the rgb data
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@ -1074,7 +1118,10 @@ void readRGBImage() {
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bool jpeg_converted = fmt2rgb888(fb->buf, fb->len, PIXFORMAT_JPEG, rgb);
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if (!jpeg_converted) {
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sendText(client,"error: failed to convert image to RGB data");
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if (!sendRGBfile) sendFooter(client); // close web page
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if (!sendRGBfile) {
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client.write("<br><a href='/'>Return</a>\n"); // link back
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sendFooter(client); // close web page
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}
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return;
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}
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sendText(client, "Conversion from jpg to RGB took " + String(millis() - tTimer) + " milliseconds");// report how long the conversion took
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@ -1336,40 +1383,31 @@ void handleTest() {
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// demo of drawing on the camera image using javascript / html canvas
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// could be of use to show area of interest on the image etc.
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// could be of use to show area of interest on the image etc. - see https://www.w3schools.com/html/html5_canvas.asp
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// creat a DIV and put image in it with a html canvas on top of it
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int tWidth = 640; // image dimensions on web page
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int tHeight = 480;
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int imageWidth = 640; // image dimensions on web page
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int imageHeight = 480;
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client.println("<div style='display:inline-block;position:relative;'>");
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client.println("<img style='position:absolute;z-index:10;' src='/jpg' width='" + String(tWidth) + "' height='" + String(tHeight) + "' />");
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client.println("<canvas style='position:relative;z-index:20;' id='myCanvas' width='" + String(tWidth) + "' height='" + String(tHeight) + "'></canvas>");
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client.println("<img style='position:absolute;z-index:10;' src='/jpg' width='" + String(imageWidth) + "' height='" + String(imageHeight) + "' />");
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client.println("<canvas style='position:relative;z-index:20;' id='myCanvas' width='" + String(imageWidth) + "' height='" + String(imageHeight) + "'></canvas>");
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client.println("</div>");
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// javascript to draw on the canvas
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client.print (R"=====(<script>
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client.println("<script>");
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client.println("var imageWidth = " + String(imageWidth) + ";");
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client.println("var imageHeight = " + String(imageHeight) + ";");
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client.print (R"=====(
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// connect to the canvas
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var c = document.getElementById("myCanvas");
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var ctx = c.getContext("2d");
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// draw red box
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ctx.strokeStyle = "red";
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ctx.rect(c.width / 2, 60, c.height / 2, 40);
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// draw on image
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ctx.rect(imageWidth / 2, imageHeight / 2, 60, 40); // box
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ctx.moveTo(20, 20); ctx.lineTo(200, 100); // line
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ctx.font = "30px Arial"; ctx.fillText("Hello World", 50, imageHeight - 50); // text
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ctx.stroke();
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</script>\n)=====");
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/*
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// demo of how to change image resolution - note: this stops PWM on the flash working for some reason
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esp_camera_deinit(); // disable camera
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delay(50);
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// cycle through a selection of resolutions
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if (FRAME_SIZE_IMAGE == FRAMESIZE_QVGA) FRAME_SIZE_IMAGE = FRAMESIZE_VGA;
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else if (FRAME_SIZE_IMAGE == FRAMESIZE_VGA) FRAME_SIZE_IMAGE = FRAMESIZE_XGA;
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else if (FRAME_SIZE_IMAGE == FRAMESIZE_XGA) FRAME_SIZE_IMAGE = FRAMESIZE_SXGA;
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else FRAME_SIZE_IMAGE = FRAMESIZE_QVGA;
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initialiseCamera();
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client.println("Camera resolution changed to " + String(FRAME_SIZE_IMAGE));
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*/
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/*
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// demo of how to request a web page
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String page = "http://urlhere.com"; // url to request
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