【发布时间】：2022-08-11 03:56:07
【问题描述】：
我正在为我的一个项目使用 ESP32-CAM。该项目是连续捕获图像 1 秒持续时间并发送到服务器。我可以捕获图像并将其成功发送到服务器。
但问题是，它不是发送当前图像帧。我认为它从我想清除的缓冲区发送图像。我的意思是我想在捕获和图像后清除其帧缓冲区以获取当前图像。
谢谢。
这是我的代码：
#include <Arduino.h>
#include <WiFi.h>
#include \"soc/soc.h\"
#include \"soc/rtc_cntl_reg.h\"
#include \"esp_camera.h\"
const char* ssid = \"ABC\";
const char* password = \"def\";
//http://192.186.86.5:8787/Home/UploadFile
String serverName = \"192.168.86.5\";
//String serverName = \"example.com\";
String serverPath = \"/Home/UploadFile\";
const int serverPort = 8787;
WiFiClient client;
// CAMERA_MODEL_AI_THINKER
#define PWDN_GPIO_NUM 32
#define RESET_GPIO_NUM -1
#define XCLK_GPIO_NUM 0
#define SIOD_GPIO_NUM 26
#define SIOC_GPIO_NUM 27
#define Y9_GPIO_NUM 35
#define Y8_GPIO_NUM 34
#define Y7_GPIO_NUM 39
#define Y6_GPIO_NUM 36
#define Y5_GPIO_NUM 21
#define Y4_GPIO_NUM 19
#define Y3_GPIO_NUM 18
#define Y2_GPIO_NUM 5
#define VSYNC_GPIO_NUM 25
#define HREF_GPIO_NUM 23
#define PCLK_GPIO_NUM 22
const int timerInterval = 10000;
unsigned long previousMillis = 0;
int image_serial_no = 0;
void setup() {
WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0);
Serial.begin(115200);
//Flash - pin 4
pinMode(4, OUTPUT);
digitalWrite(4, LOW);
WiFi.mode(WIFI_STA);
Serial.println();
Serial.print(\"Connecting to \");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
Serial.print(\".\");
delay(500);
}
Serial.println();
Serial.print(\"ESP32-CAM IP Address: \");
Serial.println(WiFi.localIP());
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;//PIXFORMAT_JPEG
// init with high specs to pre-allocate larger buffers
if(psramFound()){
config.frame_size = FRAMESIZE_UXGA;//FRAMESIZE_SVGA
config.jpeg_quality = 6; //0-63 lower number means higher quality
config.fb_count = 10;//2 -- May be light
} else {
config.frame_size = FRAMESIZE_UXGA;//FRAMESIZE_CIF
config.jpeg_quality = 7; //0-63 lower number means higher quality
config.fb_count = 9;//1 -- May be light
}
// camera init
esp_err_t err = esp_camera_init(&config);
if (err != ESP_OK) {
Serial.printf(\"Camera init failed with error 0x%x\", err);
delay(1000);
ESP.restart();
}
sendPhoto();
}
void loop() {
unsigned long currentMillis = millis();
if (currentMillis - previousMillis >= timerInterval) {
sendPhoto();
previousMillis = currentMillis;
}
}
String sendPhoto() {
String getAll;
String getBody;
image_serial_no++;
//Flash - On
digitalWrite(4, HIGH);
camera_fb_t * fb = NULL;
fb = esp_camera_fb_get();
if(!fb) {
Serial.println(\"Camera capture failed\");
delay(1000);
ESP.restart();
}
Serial.println(\"Connecting to server: \" + serverName);
if (client.connect(serverName.c_str(), serverPort)) {
Serial.println(\"Connection successful!\");
String head = \"--Zitu\\r\\nContent-Disposition: form-data; name=\\\"file\\\"; filename=\\\" \"+String(image_serial_no)+\".jpg\\\"\\r\\nContent-Type: image/jpeg\\r\\n\\r\\n\";
String tail = \"\\r\\n--Zitu--\\r\\n\";
uint32_t imageLen = fb->len;
uint32_t extraLen = head.length() + tail.length();
uint32_t totalLen = imageLen + extraLen;
client.println(\"POST \" + serverPath + \" HTTP/1.1\");
client.println(\"Host: \" + serverName);
client.println(\"Content-Length: \" + String(totalLen));
client.println(\"Content-Type: multipart/form-data; boundary=Zitu\");
client.println();
client.print(head);
uint8_t *fbBuf = fb->buf;
size_t fbLen = fb->len;
for (size_t n=0; n<fbLen; n=n+1024) {
if (n+1024 < fbLen) {
client.write(fbBuf, 1024);
fbBuf += 1024;
}
else if (fbLen%1024>0) {
size_t remainder = fbLen%1024;
client.write(fbBuf, remainder);
}
}
client.print(tail);
esp_camera_fb_return(fb);
int timoutTimer = 10000;
long startTimer = millis();
boolean state = false;
while ((startTimer + timoutTimer) > millis()) {
Serial.print(\".\");
delay(100);
while (client.available()) {
char c = client.read();
if (c == \'\\n\') {
if (getAll.length()==0) { state=true; }
getAll = \"\";
}
else if (c != \'\\r\') { getAll += String(c); }
if (state==true) { getBody += String(c); }
startTimer = millis();
}
if (getBody.length()>0) { break; }
}
Serial.println();
client.stop();
Serial.println(getBody);
}
else {
getBody = \"Connection to \" + serverName + \" failed.\";
Serial.println(getBody);
}
//Flash - Off
digitalWrite(4, LOW);
return getBody;
}
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嗨 Maruf，如果没有您的代码，我们将无法帮助您。请将代码发布为Minimal, Reproducible Example。
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编辑并分享我的代码。
标签： arduino android-camera esp32