kopia lustrzana https://github.com/alanesq/esp32cam-demo
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Alan
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f2ad802580
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5c1dc98509
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@ -6,8 +6,8 @@
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* Starting point sketch for projects using the esp32cam development board with the following features
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* web server with live video streaming
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* sd card support (using 1bit mode to free some io pins)
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* io pins available for use are 13, 12(must be low at boot)
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* flash led is still available for use on pin 4
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* io pins available for use are 13 and 12 (12 must be low at boot)
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* flash led is still available for use on pin 4 and does not flash when accessing sd card
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*
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*
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* - created using the Arduino IDE with ESP32 module installed (https://dl.espressif.com/dl/package_esp32_index.json)
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@ -17,7 +17,9 @@
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*
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* Info on the esp32cam board: https://randomnerdtutorials.com/esp32-cam-video-streaming-face-recognition-arduino-ide/
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*
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*
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* To see a more advanced sketch along the same format as this one have a look at https://github.com/alanesq/CameraWifiMotion
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* which includes email support, FTP, OTA updates, time from NTP servers and motion detection
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*
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*
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*******************************************************************************************************************/
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@ -32,8 +34,8 @@
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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 String stitle = "ESP32Cam-demo"; // title of this sketch
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const String sversion = "26Sep20"; // Sketch version
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@ -61,7 +63,7 @@
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WebServer server(80); // serve web pages on port 80
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#include "soc/soc.h" // Used to disable brownout detection on 5v power feed
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#include "soc/soc.h" // Used to disable brownout detection
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#include "soc/rtc_cntl_reg.h"
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#include "SD_MMC.h" // sd card - see https://randomnerdtutorials.com/esp32-cam-take-photo-save-microsd-card/
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@ -72,11 +74,11 @@ WebServer server(80); // serve web pages on port 80
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// Define global variables:
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uint32_t lastStatus = millis(); // last time status light changed status (to flash all ok led)
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bool sdcardPresent; // flag if an sd card is detected
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int imageCounter; // image file name counter
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int imageCounter; // image file name on sd card counter
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// camera type settings (CAMERA_MODEL_AI_THINKER)
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#define CAMERA_MODEL_AI_THINKER
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#define PWDN_GPIO_NUM 32 // power to camera enable
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#define PWDN_GPIO_NUM 32 // power to camera on/off
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#define RESET_GPIO_NUM -1 // -1 = not used
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#define XCLK_GPIO_NUM 0
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#define SIOD_GPIO_NUM 26 // i2c sda
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@ -93,7 +95,7 @@ WebServer server(80); // serve web pages on port 80
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#define HREF_GPIO_NUM 23 // href_pin
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#define PCLK_GPIO_NUM 22 // pixel_clock_pin
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camera_config_t config;
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camera_config_t config;
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@ -117,7 +119,14 @@ void setup() {
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// Turn-off the 'brownout detector'
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WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0);
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// Define io pins
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pinMode(indicatorLED, OUTPUT);
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digitalWrite(indicatorLED,HIGH);
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pinMode(brightLED, OUTPUT);
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digitalWrite(brightLED,LOW);
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// Connect to wifi
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digitalWrite(indicatorLED,LOW); // small indicator led on
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Serial.println();
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Serial.println();
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Serial.print("Connecting to ");
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@ -132,19 +141,15 @@ void setup() {
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Serial.println("IP address: ");
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Serial.println(WiFi.localIP());
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server.begin();
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digitalWrite(indicatorLED,HIGH); // small indicator led off
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// define web pages (call procedures when url requested)
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// define web pages (call procedures when url is requested)
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server.on("/", handleRoot); // root page
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server.on("/stream", handleStream); // stream live video
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server.on("/photo", handlePhoto); // capture image and save to sd card
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server.on("/photo", handlePhoto); // save image to sd card
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server.on("/img", handleImg); // show image from sd card
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server.onNotFound(handleNotFound); // invalid url requested
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// Define io pins
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pinMode(indicatorLED, OUTPUT);
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digitalWrite(indicatorLED,HIGH);
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pinMode(brightLED, OUTPUT);
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digitalWrite(brightLED,LOW);
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// set up camera
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Serial.print(("Initialising camera: "));
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if (setupCameraHardware()) Serial.println("OK");
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@ -164,7 +169,7 @@ void setup() {
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Serial.println("SD Card type detect failed");
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sdcardPresent = 0; // flag no sd card available
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} else {
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sdcardPresent = 1; // valid sd card found
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// valid sd card detected
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uint16_t SDfreeSpace = (uint64_t)(SD_MMC.totalBytes() - SD_MMC.usedBytes()) / (1024 * 1024);
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Serial.println("SD Card found, free space = " + String(SDfreeSpace) + "MB");
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sdcardPresent = 1; // flag sd card available
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@ -217,10 +222,13 @@ void loop() {
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server.handleClient(); // handle any web page requests
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// If not in triggered state flash status light to show sketch is running ok
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// flash status light to show sketch is running
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if ((unsigned long)(millis() - lastStatus) >= TimeBetweenStatus) {
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lastStatus = millis(); // reset timer
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digitalWrite(indicatorLED,!digitalRead(indicatorLED)); // flip indicator led status
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@ -234,10 +242,11 @@ void loop() {
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// ----------------------------------------------------------------
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// Flash indicator LED
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// Misc small procedures
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// ----------------------------------------------------------------
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// flash led 'reps' number of times
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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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@ -248,6 +257,7 @@ void flashLED(int reps) {
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}
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// critical error - stop sketch and continually flash error status
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void showError(int errorNo) {
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while(1) {
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@ -261,11 +271,10 @@ void showError(int errorNo) {
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// ----------------------------------------------------------------
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// save live camera image to sd card
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// Capture image from camera and save to sd card
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// iTitle = file name to use
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// ----------------------------------------------------------------
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void storeImage(String iTitle) {
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if (debugInfo) Serial.println("Storing image #" + String(imageCounter) + " to sd card");
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@ -273,7 +282,6 @@ void storeImage(String iTitle) {
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fs::FS &fs = SD_MMC; // sd card file system
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// capture live image from camera
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// cameraImageSettings(); // apply camera sensor settings (in camera.h)
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if (flashRequired) digitalWrite(brightLED,HIGH); // turn flash on
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camera_fb_t *fb = esp_camera_fb_get(); // capture image frame from camera
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digitalWrite(brightLED,LOW); // turn flash off
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@ -308,10 +316,9 @@ void storeImage(String iTitle) {
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// ----------------------------------------------------------------
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// Set up the camera
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// Configure the camera
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// ----------------------------------------------------------------
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bool setupCameraHardware() {
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config.ledc_channel = LEDC_CHANNEL_0;
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@ -370,6 +377,8 @@ void handleRoot() {
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// html body
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client.write("<p>Hello from esp32cam</p>\n");
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if (sdcardPresent) client.write("<p>SD Card available</p>\n");
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else client.write("<p>No SD Card detected</p>\n");
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// end html
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client.write("</body></htlm>\n");
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@ -405,7 +414,7 @@ void handlePhoto() {
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// note: if the line of html is not just plain text it has to be first put in to 'tstr' then sent in this way
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// I find it easier to use strings then convert but this is probably frowned upon ;-)
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tstr = "<p>Image saved to sd card as image number " + String(imageCounter) + "</p>\n";
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client.write(tstr.c_str());
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client.write(tstr.c_str());
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// end html
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client.write("</body></htlm>\n");
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@ -415,6 +424,42 @@ void handlePhoto() {
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} // handlePhoto
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// ----------------------------------------------------------------
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// -show image from sd card i.e. http://x.x.x.x/img?img=x
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// ----------------------------------------------------------------
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// default image = most recent
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void handleImg() {
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WiFiClient client = server.client(); // open link with client
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int imgToShow = imageCounter; // default to showing most recent file
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// get image number from url parameter
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if (server.hasArg("img")) {
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String Tvalue = server.arg("img"); // read value
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imgToShow = Tvalue.toInt(); // convert string to int
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if (imgToShow < 1 || imgToShow > imageCounter) imgToShow = imageCounter; // validate image number
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}
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if (debugInfo) Serial.println("Displaying image #" + String(imgToShow) + " from sd card");
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String tFileName = "/img/" + String(imgToShow) + ".jpg";
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fs::FS &fs = SD_MMC; // sd card file system
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File timg = fs.open(tFileName, "r");
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if (timg) {
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size_t sent = server.streamFile(timg, "image/jpeg");
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timg.close();
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} else {
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if (debugInfo) Serial.println("Error: image file not found");
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}
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} // handleImg
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// ******************************************************************************************************************
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