代码收藏家技术教程 2023-03-04

《测试ESP32S3 CameraWebServe：一个精彩的Demo》

合宙ESP32S3 CameraWebServe

合宙ESP32S3 CameraWebServe测试，我们需要一个OV2640的摄像头模组用来采集图像传输给ESP32的，这里使用的OV2640是之前安信可十周年的白嫖的。现在直接插到合宙ESP32S3开发板，简直完美。还是白嫖好！！！

ESP32S3

合宙ESP32S3核心板是基于乐鑫ESP32-S3进行设计的一款核心板，尺寸仅有21mm*51mm，板边采用邮票孔设计，方便开发者在不同场景下的使用。核心板板载2.4G天线，支持wifi和蓝牙。核心板内置8MB psram，16MB flash豪华配置。板载ch343p USB转串口芯片，方便下载烧录；同时还设计了模拟开关电路，可一键切换到S3内置的USB，进行USB功能的开发调试。核心板支持UART、GPIO、SPI、I2C、ADC、PWM，SDIO，Camera等接口，可根据实际需要连接外设进行调试。

硬件资源

ESP32S3采用Xtensa® 32 位 LX7 双核处理器，五级流水线架构，主频高达240M。内置512K SRAM，本次发布型号和封8MB psram。

4 × SPI

1 × LCD 接口（8 位 ~16 位并行 RGB, I8080, MOTO6800）, 支持 RGB565, YUV422, YUV420, YUV411 之间互相转换

1 × DVP 8 位 ~16 位摄像头接口

3 × UART

2 × I2C

2 × I2S

1 × RMT (TX/RX)

1 × 脉冲计数器 – LED PWM 控制器，多达 8 个通道

1 × 全速 USB OTG

1 × USB Serial/JTAG 控制器

2 × MCPWM

1 × SDIO 主机接口，具有 2 个卡槽

通用 DMA 控制器 (简称 GDMA)，5 个接收通道和 5 个发送通道

1 × TWAI® 控制器，兼容 ISO 11898-1（CAN 规范 2.0）

2 × 12 位 SAR ADC，多达 20 个通道

引脚分布

CameraWebServe测试demo

ArduinoIDE 开发esp32s3 参考流程
https://blog.csdn.net/chilian12321/article/details/115979076
准备好最主要的控制器模块之后我们需要一个OV2640的摄像头模组用来采集图像传输给ESP32的，这里使用的OV2640是之前安信可十周年的白嫖的。现在直接插到合宙ESP32S3开发板，简直完美。

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_AI_THINKER // Has PSRAM
//#define CAMERA_MODEL_TTGO_T_JOURNAL // No PSRAM
// ** Espressif Internal Boards **
//#define CAMERA_MODEL_ESP32_CAM_BOARD
//#define CAMERA_MODEL_ESP32S2_CAM_BOARD
//#define CAMERA_MODEL_ESP32S3_CAM_LCD


#include "camera_pins.h"

// ===========================
// Enter your WiFi credentials  设置热点密码，唯一需要改动的部分
// ===========================
const char* ssid = "DAP";
const char* password = "delehub2023";

void startCameraServer();

void setup() {
  Serial.begin(115200);
  Serial.setDebugOutput(true);
  Serial.println();

  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_sscb_sda = SIOD_GPIO_NUM;
  config.pin_sscb_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_vflip(s, 1); // flip it back
    s->set_brightness(s, 1); // up the brightness just a bit
    s->set_saturation(s, -2); // lower the saturation
  }
  // drop down frame size for higher initial frame rate
  if(config.pixel_format == PIXFORMAT_JPEG){
    s->set_framesize(s, FRAMESIZE_QVGA);
  }

#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

  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");
}

void loop() {
  // Do nothing. Everything is done in another task by the web server
  delay(10000);
}