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esp32cam-demo
kopia lustrzana https://github.com/alanesq/esp32cam-demo
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Alan 2020-10-01 07:39:39 +01:00 zatwierdzone przez GitHub
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esp32cam-demo.ino
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@ -37,8 +37,8 @@
const char* ssid = "<your wifi network name here>"; const char* ssid = "<your wifi network name here>";
const char* password = "<your wifi password here>"; const char* password = "<your wifi password here>";
const char stitle[] = "ESP32Cam-demo"; // title of this sketch const char* stitle = "ESP32Cam-demo"; // title of this sketch
const char sversion[] = "27Sep20"; // Sketch version const char* sversion = "01Oct20"; // Sketch version
const bool debugInfo = 1; // show additional debug info. on serial port (1=enabled) const bool debugInfo = 1; // show additional debug info. on serial port (1=enabled)
@ -82,7 +82,7 @@ WebServer server(80); // serve web pages on port 80
bool sdcardPresent; // flag if an sd card is detected bool sdcardPresent; // flag if an sd card is detected
int imageCounter; // image file name on sd card counter int imageCounter; // image file name on sd card counter
// camera settings (CAMERA_MODEL_AI_THINKER) // camera settings (for the standard - OV2640 - CAMERA_MODEL_AI_THINKER)
#define CAMERA_MODEL_AI_THINKER #define CAMERA_MODEL_AI_THINKER
#define PWDN_GPIO_NUM 32 // power to camera on/off #define PWDN_GPIO_NUM 32 // power to camera on/off
#define RESET_GPIO_NUM -1 // -1 = not used #define RESET_GPIO_NUM -1 // -1 = not used
@ -113,73 +113,73 @@ WebServer server(80); // serve web pages on port 80
void setup() { void setup() {
Serial.begin(serialSpeed); // Serial communication Serial.begin(serialSpeed); // Start serial communication
Serial.println("\n\n\n"); // line feeds Serial.println("\n\n\n"); // line feeds
Serial.println("-----------------------------------"); Serial.println("-----------------------------------");
Serial.printf("Starting - %s - %s \n", stitle, sversion); Serial.printf("Starting - %s - %s \n", stitle, sversion);
Serial.println("-----------------------------------"); Serial.println("-----------------------------------");
// Turn-off the 'brownout detector' WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); // Turn-off the 'brownout detector'
WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0);
// Define indicator led // Define small indicator led
pinMode(indicatorLED, OUTPUT); pinMode(indicatorLED, OUTPUT);
digitalWrite(indicatorLED,HIGH); digitalWrite(indicatorLED,HIGH);
// Connect to wifi // Connect to wifi
digitalWrite(indicatorLED,LOW); // small indicator led on digitalWrite(indicatorLED,LOW); // small indicator led on
Serial.print("\nConnecting to "); Serial.print("\nConnecting to ");
Serial.println(ssid); Serial.print(ssid);
Serial.print("\n ");
WiFi.begin(ssid, password); WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) { while (WiFi.status() != WL_CONNECTED) {
delay(500); delay(500);
Serial.print("."); Serial.print(".");
} }
Serial.print("\nWiFi connected. "); Serial.print("\nWiFi connected, ");
Serial.println("IP address: "); Serial.print("IP address: ");
Serial.println(WiFi.localIP()); Serial.println(WiFi.localIP());
server.begin(); server.begin();
digitalWrite(indicatorLED,HIGH); // small indicator led off digitalWrite(indicatorLED,HIGH); // small indicator led off
// define web pages (call these procedures when url is requested) // define the web pages (i.e. call these procedures when url is requested)
server.on("/", handleRoot); // root page server.on("/", handleRoot); // root page
server.on("/stream", handleStream); // stream live video server.on("/stream", handleStream); // stream live video
server.on("/photo", handlePhoto); // save image to sd card server.on("/photo", handlePhoto); // save image to sd card
server.on("/img", handleImg); // show image from sd card server.on("/img", handleImg); // show image from sd card
server.onNotFound(handleNotFound); // invalid url requested server.onNotFound(handleNotFound); // invalid url requested
// set up camera // set up camera
Serial.print(("\nInitialising camera: ")); Serial.print(("\nInitialising camera: "));
if (setupCameraHardware()) Serial.println("OK"); if (setupCameraHardware()) Serial.println("OK");
else { else {
Serial.println("Error!"); Serial.println("Error!");
showError(2); // critical error so stop and flash led showError(2); // critical error so stop and flash led
} }
// Configure sd card // SD Card - if one is detected set 'sdcardPresent' High
if (!SD_MMC.begin("/sdcard", true)) { // if loading sd card fails if (!SD_MMC.begin("/sdcard", true)) { // if loading sd card fails
// note: ('/sdcard", true)' = 1bit mode - see: https://www.reddit.com/r/esp32/comments/d71es9/a_breakdown_of_my_experience_trying_to_talk_to_an/ // note: ('/sdcard", true)' = 1bit mode - see: https://www.reddit.com/r/esp32/comments/d71es9/a_breakdown_of_my_experience_trying_to_talk_to_an/
Serial.println("No SD Card detected"); Serial.println("No SD Card detected");
sdcardPresent = 0; // flag no sd card available sdcardPresent = 0; // flag no sd card available
} else { } else {
uint8_t cardType = SD_MMC.cardType(); uint8_t cardType = SD_MMC.cardType();
if (cardType == CARD_NONE) { // if invalid card found if (cardType == CARD_NONE) { // if invalid card found
Serial.println("SD Card type detect failed"); Serial.println("SD Card type detect failed");
sdcardPresent = 0; // flag no sd card available sdcardPresent = 0; // flag no sd card available
} else { } else {
// valid sd card detected // valid sd card detected
uint16_t SDfreeSpace = (uint64_t)(SD_MMC.totalBytes() - SD_MMC.usedBytes()) / (1024 * 1024); uint16_t SDfreeSpace = (uint64_t)(SD_MMC.totalBytes() - SD_MMC.usedBytes()) / (1024 * 1024);
Serial.printf("SD Card found, free space = %dMB \n", SDfreeSpace); Serial.printf("SD Card found, free space = %dMB \n", SDfreeSpace);
sdcardPresent = 1; // flag sd card available sdcardPresent = 1; // flag sd card available
} }
} }
fs::FS &fs = SD_MMC; // sd card file system fs::FS &fs = SD_MMC; // sd card file system
// discover the number of image files stored in '/img' folder of the sd card and set image file counter accordingly // discover the number of image files stored in '/img' folder of the sd card and set image file counter accordingly
imageCounter = 0; imageCounter = 0;
if (sdcardPresent) { if (sdcardPresent) {
int tq=fs.mkdir("/img"); // create the '/img' folder on sd card (in case it is not already there) int tq=fs.mkdir("/img"); // create the '/img' folder on sd card (in case it is not already there)
if (!tq) Serial.println("Unable to create IMG folder on sd card"); if (!tq) Serial.println("Unable to create IMG folder on sd card");
// open the image folder and step through all files in it // open the image folder and step through all files in it
@ -196,19 +196,19 @@ void setup() {
} }
// define io pins // define io pins
pinMode(indicatorLED, OUTPUT); // re defined as sd card config can reset it pinMode(indicatorLED, OUTPUT); // defined again as sd card config can reset it
digitalWrite(indicatorLED,HIGH); // led off = High digitalWrite(indicatorLED,HIGH); // led off = High
pinMode(brightLED, OUTPUT); pinMode(brightLED, OUTPUT); // flash LED
digitalWrite(brightLED,LOW); // led off = Low digitalWrite(brightLED,LOW); // led off = Low
pinMode(iopinA, OUTPUT); // pin 13 - free io pin, can be input or output pinMode(iopinA, OUTPUT); // pin 13 - free io pin, can be input or output
pinMode(iopinB, OUTPUT); // pin 12 - free io pin, can be input or output (must be low at boot) pinMode(iopinB, OUTPUT); // pin 12 - free io pin, can be input or output (must be low at boot)
if (!psramFound()) { if (!psramFound()) {
Serial.println("Warning: No PSRam found so defaulting to image size 'CIF'"); Serial.println("Warning: No PSRam found so defaulting to image size 'CIF'");
framesize_t FRAME_SIZE_IMAGE = FRAMESIZE_CIF; framesize_t FRAME_SIZE_IMAGE = FRAMESIZE_CIF;
} }
Serial.println("\nStarted..."); Serial.println("\n\nStarted...");
} // setup } // setup
@ -260,7 +260,7 @@ void loop() {
// ---------------------------------------------------------------- // ----------------------------------------------------------------
// Configure the camera // Configure the camera
// ---------------------------------------------------------------- // ----------------------------------------------------------------
// returns '1' if camera set up was ok // returns TRUE if sucessful
bool setupCameraHardware() { bool setupCameraHardware() {
@ -306,7 +306,8 @@ bool setupCameraHardware() {
// ---------------------------------------------------------------- // ----------------------------------------------------------------
// flash led 'reps' number of times
// flash the indicator led 'reps' number of times
void flashLED(int reps) { void flashLED(int reps) {
for(int x=0; x < reps; x++) { for(int x=0; x < reps; x++) {
digitalWrite(indicatorLED,LOW); digitalWrite(indicatorLED,LOW);
@ -318,7 +319,7 @@ void flashLED(int reps) {
// critical error - stop sketch and continually flash error code // critical error - stop sketch and continually flash error code on indicator led
void showError(int errorNo) { void showError(int errorNo) {
while(1) { while(1) {
flashLED(errorNo); flashLED(errorNo);
@ -334,7 +335,7 @@ void showError(int errorNo) {
// ---------------------------------------------------------------- // ----------------------------------------------------------------
// Capture image from camera and save to sd card // Capture image from camera and save to sd card
// ---------------------------------------------------------------- // ----------------------------------------------------------------
// returns TRUE if image was saved ok // returns TRUE if sucessful
bool storeImage() { bool storeImage() {
@ -393,13 +394,14 @@ void handleRoot() {
WiFiClient client = server.client(); // open link with client WiFiClient client = server.client(); // open link with client
// log page request including clients IP address // log the page request including clients IP address
if (debugInfo) { if (debugInfo) {
IPAddress cip = client.remoteIP(); IPAddress cip = client.remoteIP();
if (debugInfo) Serial.printf("Root page requested from: %d.%d.%d.%d \n", cip[0], cip[1], cip[2], cip[3]); Serial.printf("Root page requested from: %d.%d.%d.%d \n", cip[0], cip[1], cip[2], cip[3]);
} }
// Action any button presses on this page
// Action any button presses on the web page
// if button1 was pressed (toggle io pin A) // if button1 was pressed (toggle io pin A)
// Note: if using an input box etc. you would read the value with the command: String Bvalue = server.arg("demobutton1"); // Note: if using an input box etc. you would read the value with the command: String Bvalue = server.arg("demobutton1");
@ -482,7 +484,7 @@ void handlePhoto() {
// log page request including clients IP address // log page request including clients IP address
if (debugInfo) { if (debugInfo) {
IPAddress cip = client.remoteIP(); IPAddress cip = client.remoteIP();
if (debugInfo) Serial.printf("Photo requested from: %d.%d.%d.%d \n", cip[0], cip[1], cip[2], cip[3]); Serial.printf("Photo requested from: %d.%d.%d.%d \n", cip[0], cip[1], cip[2], cip[3]);
} }
// save an image to sd card // save an image to sd card
@ -520,7 +522,7 @@ bool handleImg() {
// log page request including clients IP address // log page request including clients IP address
if (debugInfo) { if (debugInfo) {
IPAddress cip = client.remoteIP(); IPAddress cip = client.remoteIP();
if (debugInfo) Serial.printf("Image display requested from: %d.%d.%d.%d \n", cip[0], cip[1], cip[2], cip[3]); Serial.printf("Image display requested from: %d.%d.%d.%d \n", cip[0], cip[1], cip[2], cip[3]);
if (imageCounter == 0) Serial.println("Error: no images to display"); if (imageCounter == 0) Serial.println("Error: no images to display");
} }
@ -562,7 +564,11 @@ bool handleImg() {
void handleNotFound() { void handleNotFound() {
if (debugInfo) Serial.println("Invalid web page requested"); // log page request
if (debugInfo) {
Serial.print("Invalid page requested");
}
String message = "File Not Found\n\n"; String message = "File Not Found\n\n";
message += "URI: "; message += "URI: ";
message += server.uri(); message += server.uri();
@ -597,7 +603,7 @@ void handleStream(){
// log page request including clients IP address // log page request including clients IP address
if (debugInfo) { if (debugInfo) {
IPAddress cip = client.remoteIP(); IPAddress cip = client.remoteIP();
if (debugInfo) Serial.printf("Video stream requested from: %d.%d.%d.%d \n", cip[0], cip[1], cip[2], cip[3]); Serial.printf("Video stream requested from: %d.%d.%d.%d \n", cip[0], cip[1], cip[2], cip[3]);
} }
// HTML used in the web page // HTML used in the web page
@ -623,14 +629,14 @@ void handleStream(){
while (true) while (true)
{ {
if (!client.connected()) break; if (!client.connected()) break;
fb = esp_camera_fb_get(); // capture live image frame fb = esp_camera_fb_get(); // capture live image
s = fb->len; // store size of image (i.e. buffer length) s = fb->len; // store size of image (i.e. buffer length)
client.write(CTNTTYPE, cntLen); // send content type html (i.e. jpg image) client.write(CTNTTYPE, cntLen); // send content type html (i.e. jpg image)
sprintf( buf, "%d\r\n\r\n", s ); // format the image's size as html sprintf( buf, "%d\r\n\r\n", s ); // format the image's size as html and put in to 'buf'
client.write(buf, strlen(buf)); // send image size client.write(buf, strlen(buf)); // send result (image size)
client.write((char *)fb->buf, s); // send the image data client.write((char *)fb->buf, s); // send the image data
client.write(BOUNDARY, bdrLen); // send html boundary see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Type client.write(BOUNDARY, bdrLen); // send html boundary see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Type
esp_camera_fb_return(fb); // return frame so memory can be released esp_camera_fb_return(fb); // return image so memory can be released
} }
if (debugInfo) Serial.println("Video stream stopped"); if (debugInfo) Serial.println("Video stream stopped");