The ESP32-CAM module that I got cheap online didn’t want to stay connected.
After reading a bit, I found a good write about it on:
I edited the standard cameraserver.ino and ended up with something that makes it run more stable.
Features: Static IP, wifi connection and connection checking, automatic reboot if everything else fails, logging details on serial out.
Have fun.
Edit 24-nov-17: updated code
#include "esp_camera.h"
#include <WiFi.h>
//
// WARNING!!! PSRAM IC required for UXGA resolution and high JPEG quality
// Ensure ESP32 Wrover Module or other board with PSRAM is selected
// Partial images will be transmitted if image exceeds buffer size
//
// You must select partition scheme from the board menu that has at least 3MB APP space.
// Face Recognition is DISABLED for ESP32 and ESP32-S2, because it takes up from 15
// seconds to process single frame. Face Detection is ENABLED if PSRAM is enabled as well
// ===================
// Select camera model
// ===================
//#define CAMERA_MODEL_WROVER_KIT // Has PSRAM
// #define CAMERA_MODEL_ESP_EYE // Has PSRAM
//#define CAMERA_MODEL_ESP32S3_EYE // Has PSRAM
//#define CAMERA_MODEL_M5STACK_PSRAM // Has PSRAM
//#define CAMERA_MODEL_M5STACK_V2_PSRAM // M5Camera version B Has PSRAM
//#define CAMERA_MODEL_M5STACK_WIDE // Has PSRAM
//#define CAMERA_MODEL_M5STACK_ESP32CAM // No PSRAM
//#define CAMERA_MODEL_M5STACK_UNITCAM // No PSRAM
//#define CAMERA_MODEL_M5STACK_CAMS3_UNIT // Has PSRAM
#define CAMERA_MODEL_AI_THINKER // Has PSRAM
//#define CAMERA_MODEL_TTGO_T_JOURNAL // No PSRAM
//#define CAMERA_MODEL_XIAO_ESP32S3 // Has PSRAM
// ** Espressif Internal Boards **
//#define CAMERA_MODEL_ESP32_CAM_BOARD
//#define CAMERA_MODEL_ESP32S2_CAM_BOARD
//#define CAMERA_MODEL_ESP32S3_CAM_LCD
//#define CAMERA_MODEL_DFRobot_FireBeetle2_ESP32S3 // Has PSRAM
//#define CAMERA_MODEL_DFRobot_Romeo_ESP32S3 // Has PSRAM
#include "camera_pins.h"
// ===========================
// Enter your WiFi credentials
// ===========================
const char *ssid = "SSID3";
const char *password = "ToegangTotOnsNetwerk101";
float wakeup;
float last_wakeup;
void startCameraServer();
void setupLedFlash(int pin);
// Set your Static IP address
IPAddress local_IP(192, 168, 100, 247);
// Set your Gateway IP address
IPAddress gateway(192, 168, 100, 254);
IPAddress subnet(255, 255, 255, 0);
IPAddress primaryDNS(8, 8, 8, 8); //optional
IPAddress secondaryDNS(1, 1, 1, 1); //optional
// Define red LED
const int ledPin = 33;
void setup() {
// Setup red LED
pinMode(ledPin, OUTPUT);
Serial.begin(115200);
Serial.setDebugOutput(true);
Serial.println();
Serial.println("**");
Serial.println("** Serial started, speed 115200.");
camera_config_t config;
config.ledc_channel = LEDC_CHANNEL_0;
config.ledc_timer = LEDC_TIMER_0;
config.pin_d0 = Y2_GPIO_NUM;
config.pin_d1 = Y3_GPIO_NUM;
config.pin_d2 = Y4_GPIO_NUM;
config.pin_d3 = Y5_GPIO_NUM;
config.pin_d4 = Y6_GPIO_NUM;
config.pin_d5 = Y7_GPIO_NUM;
config.pin_d6 = Y8_GPIO_NUM;
config.pin_d7 = Y9_GPIO_NUM;
config.pin_xclk = XCLK_GPIO_NUM;
config.pin_pclk = PCLK_GPIO_NUM;
config.pin_vsync = VSYNC_GPIO_NUM;
config.pin_href = HREF_GPIO_NUM;
config.pin_sccb_sda = SIOD_GPIO_NUM;
config.pin_sccb_scl = SIOC_GPIO_NUM;
config.pin_pwdn = PWDN_GPIO_NUM;
config.pin_reset = RESET_GPIO_NUM;
config.xclk_freq_hz = 20000000;
config.frame_size = FRAMESIZE_UXGA;
config.pixel_format = PIXFORMAT_JPEG; // for streaming
//config.pixel_format = PIXFORMAT_RGB565; // for face detection/recognition
config.grab_mode = CAMERA_GRAB_WHEN_EMPTY;
config.fb_location = CAMERA_FB_IN_PSRAM;
config.jpeg_quality = 12;
config.fb_count = 1;
// if PSRAM IC present, init with UXGA resolution and higher JPEG quality
// for larger pre-allocated frame buffer.
if (config.pixel_format == PIXFORMAT_JPEG) {
if (psramFound()) {
config.jpeg_quality = 10;
config.fb_count = 2;
config.grab_mode = CAMERA_GRAB_LATEST;
} else {
// Limit the frame size when PSRAM is not available
config.frame_size = FRAMESIZE_SVGA;
config.fb_location = CAMERA_FB_IN_DRAM;
}
} else {
// Best option for face detection/recognition
config.frame_size = FRAMESIZE_240X240;
#if CONFIG_IDF_TARGET_ESP32S3
config.fb_count = 2;
#endif
}
#if defined(CAMERA_MODEL_ESP_EYE)
pinMode(13, INPUT_PULLUP);
pinMode(14, INPUT_PULLUP);
#endif
// camera init
esp_err_t err = esp_camera_init(&config);
if (err != ESP_OK) {
Serial.printf("** Camera init failed with error 0x%x", err);
return;
}
sensor_t *s = esp_camera_sensor_get();
// initial sensors are flipped vertically and colors are a bit saturated
if (s->id.PID == OV3660_PID) {
s->set_brightness(s, 1); // up the brightness just a bit
s->set_saturation(s, -2); // lower the saturation
s->set_framesize(s, FRAMESIZE_VGA); // 640x480
s->set_hmirror(s, 1); // 0 = disable , 1 = enable -> Mirror correctly
s->set_vflip(s, 1); // 0 = disable , 1 = enable -> Flip it back
}
// drop down frame size for higher initial frame rate
if (config.pixel_format == PIXFORMAT_JPEG) {
s->set_framesize(s, FRAMESIZE_VGA);
}
#if defined(CAMERA_MODEL_M5STACK_WIDE) || defined(CAMERA_MODEL_M5STACK_ESP32CAM)
s->set_vflip(s, 1);
s->set_hmirror(s, 1);
#endif
#if defined(CAMERA_MODEL_ESP32S3_EYE)
s->set_vflip(s, 1);
#endif
// Setup LED FLash if LED pin is defined in camera_pins.h
#if defined(LED_GPIO_NUM)
setupLedFlash(LED_GPIO_NUM);
#endif
// // removed
// //WiFi.begin(ssid, password);
// WiFi.setSleep(false);
//
// while (WiFi.status() != WL_CONNECTED) {
// delay(500);
// Serial.print(".");
// }
// Serial.println("");
// Serial.println("WiFi connected");
//
// startCameraServer();
//
// Serial.print("Camera Ready! Use 'http://");
// Serial.print(WiFi.localIP());
// Serial.println("' to connect");
//
// // end removed
// New code
// Turn on LED to show we're busy
digitalWrite(ledPin, LOW);
// Start up delay, wait for camera settings
Serial.println("** Waiting for camera settings..");
// one second please.
delay(1000);
if(!WiFi.config(local_IP, gateway, subnet, primaryDNS, secondaryDNS)) {
Serial.println("** Static IP failed to configure");
}
// Begin WiFi
WiFi.begin(ssid, password);
// Set Wifi sleep off
WiFi.setSleep(false);
// Wait for WiFi to be connected
Serial.print("** Connecting.");
while (WiFi.status() != WL_CONNECTED) {
delay(750);
Serial.print(".");
}
Serial.println("");
Serial.println("** WiFi Connected");
Serial.print("** Local IP ");
Serial.println(WiFi.localIP());
// Starting Camera server
Serial.println("** Starting Camera server.");
startCameraServer();
Serial.println("** Camera server started.");
Serial.print("** Camera Ready! Use 'http://");
Serial.print(WiFi.localIP());
Serial.println("' to connect");
Serial.println("** Entering connection probing mode");
// Turn off LED to show we're all OK
digitalWrite(ledPin, HIGH);
}
void loop() {
// Connection probing mode checks the module still is connected to WiFi, or takes action
// Count the miliseconds it has been running
wakeup = millis();
// 5 minutes (last wakeup starts at 0, then 5 min, every 5 minutes the if condition is met)
if (wakeup - last_wakeup > (60000) ) {
// Turn on LED to show we're checking
digitalWrite(ledPin, LOW);
delay(200);
Serial.println("** Connection probing, are we still connected?");
last_wakeup = millis();
//Checks if the wifi is connected
if (WiFi.status() != WL_CONNECTED) {
//If not, try to reconnect
Serial.println("** Detected WiFi not connected, trying WiFi reconnect");
WiFi.reconnect();
Serial.println("** Trying Wifi reconnect now, waiting 8s");
delay(8000); //wait 8s
//Check again if it's connected
if (WiFi.status() != WL_CONNECTED) {
//if not, reinitiate wifi
Serial.println("** Detected WiFi still not connected, trying WiFi subsystem restart");
Serial.println("** Disconnecting WiFi");
WiFi.disconnect();
WiFi.mode(WIFI_STA);
Serial.println("** Setting IP address again");
if(!WiFi.config(local_IP, gateway, subnet, primaryDNS, secondaryDNS)) {
Serial.println("** Static IP failed to configure");
}
Serial.println("** Connecting WiFi, waiting 8s");
WiFi.begin(ssid, password);
delay(8000);
//If it is still not connected, reboot ESP
if (WiFi.status() != WL_CONNECTED){
Serial.println("** Still not connected, rebooting ESP system");
delay(2000);
Serial.println("** ESP RESTART");
ESP.restart();
}
WiFi.begin(ssid, password);
//Start the webserver
startCameraServer();
Serial.println("** Camera server started.");
Serial.print("Camera Ready! Use 'http://");
Serial.print(WiFi.localIP());
Serial.println("' to connect");
}
} else {
Serial.println("** We are still connected.");
// Turn off LED to show we're done checking
digitalWrite(ledPin, HIGH);
}
}
}