Video streaming 在ESP32-CAM上播放视频时，如何拍摄照片并保存到microSD卡

我正在使用ESP32-CAM将视频流传输到网址。这个很好用。如果可能的话，我想在流媒体时拍摄一张照片，并将其保存到板载micro SD卡中

这是我的流媒体视频代码

#include "src/OV2640.h"
#include <WiFi.h>
#include <WebServer.h>
#include <time.h>
#include "FS.h"                // SD Card ESP32
#include "SD_MMC.h"            // SD Card ESP32
#include <WiFiClient.h>
#include <EEPROM.h>
#include <string.h>
#include <stdio.h>


#define CAMERA_MODEL_AI_THINKER

#include "camera_pins.h"

OV2640 cam;

WebServer server(81);
//Stream server(81);

const char HEADER[] = "HTTP/1.1 200 OK\r\n" \
                      "Access-Control-Allow-Origin: *\r\n" \
                      "Content-Type: multipart/x-mixed-replace; boundary=123456789000000000000987654321\r\n";
const char BOUNDARY[] = "\r\n--123456789000000000000987654321\r\n";
const char CTNTTYPE[] = "Content-Type: image/jpeg\r\nContent-Length: ";
const int hdrLen = strlen(HEADER);
const int bdrLen = strlen(BOUNDARY);
const int cntLen = strlen(CTNTTYPE);

void handle_jpg_stream(void)
{
  char buf[32];
  int s;

  WiFiClient client = server.client();

  client.write(HEADER, hdrLen);
  client.write(BOUNDARY, bdrLen);

  while (true)
  {
    if (!client.connected()) break;
    cam.run();
    s = cam.getSize();
    client.write(CTNTTYPE, cntLen);
    sprintf( buf, "%d\r\n\r\n", s );
    client.write(buf, strlen(buf));
    client.write((char *)cam.getfb(), s);
    client.write(BOUNDARY, bdrLen);
  }
}

const char JHEADER[] = "HTTP/1.1 200 OK\r\n" \
                       "Content-disposition: inline; filename=capture.jpg\r\n" \
                       "Content-type: image/jpeg\r\n\r\n";
const int jhdLen = strlen(JHEADER);

void handle_jpg(void)
{
  WiFiClient client = server.client();

  cam.run();
  if (!client.connected()) return;

  client.write(JHEADER, jhdLen);
  client.write((char *)cam.getfb(), cam.getSize());
  
}

void handleNotFound()
{
  String message = "Server is running!\n\n";
  message += "URI: ";
  message += server.uri();
  message += "\nMethod: ";
  message += (server.method() == HTTP_GET) ? "GET" : "POST";
  message += "\nArguments: ";
  message += server.args();
  message += "\n";
  server.send(200, "text / plain", message);
}

void setup()
{

  Serial.begin(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_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.pixel_format = PIXFORMAT_JPEG;

  // Frame parameters
  //  config.frame_size = FRAMESIZE_UXGA;
  config.frame_size = FRAMESIZE_VGA;
  config.jpeg_quality = 12;
  config.fb_count = 2;

#if defined(CAMERA_MODEL_ESP_EYE)
  pinMode(13, INPUT_PULLUP);
  pinMode(14, INPUT_PULLUP);
#endif

  cam.init(config);

  IPAddress ip;

  WiFi.mode(WIFI_STA);
  
  WiFi.begin(ssidString, pskString);
  
 
  while (WiFi.status() != WL_CONNECTED)
  {
    delay(500);
    Serial.print(F("."));
  }
  ip = WiFi.localIP();
  Serial.println(F("WiFi connected"));
  Serial.println("");
  Serial.println(ip);
  Serial.print("Stream Link: http://");
  Serial.print(ip);
  Serial.println("/mjpegd/1");
  server.on("/XXXXXXX/1", HTTP_GET, handle_jpg_stream);
  server.on("/jpg", HTTP_GET, handle_jpg);
  server.onNotFound(handleNotFound);
  server.begin();
 
}

void loop()
{ 
 server.handleClient();
 
}

我的esp8266-12e代码

int MOVEMENT = 5;

void setup() {

pinMode(MOVEMENT,OUTPUT);
digitalWrite(MOVEMENT,LOW);
}

void loop() {

 long state = digitalRead(LED2);
  if(state == HIGH) {
  
digitalWrite(MOVEMENT,HIGH);
delay(500);
digitalWrite(MOVEMENT,LOW);
}
}

我能把GPIO5引脚做成这样的输出引脚并使其工作吗

---

我试过了，但没有用。你知道我该怎么做吗。

什么叫“无用”？具体是什么出了问题？代码没有编译吗？它会崩溃吗？保存的照片是否损坏？此外，请添加程序的控制台输出。因此，我在引脚16（运动）上放置了一个下拉电阻，并将其设置为引脚模式（运动，输入）；因为我的阅读量一直很高。现在，尽管我的ESP8266-12e上的引脚GPIO5读数不高。我已经编辑了我的文章，包括它的代码。

int MOVEMENT = 5;

void setup() {

pinMode(MOVEMENT,OUTPUT);
digitalWrite(MOVEMENT,LOW);
}

void loop() {

 long state = digitalRead(LED2);
  if(state == HIGH) {
  
digitalWrite(MOVEMENT,HIGH);
delay(500);
digitalWrite(MOVEMENT,LOW);
}
}