Heyho,
ich bin immer noch mit der ESP32-Cam dabei und versuche jetzt Zum Beispiel einen HC-SR04 Sensor dazu zuschalten.
Folgendes Problem:
Sketch funktioniert - und es wird ein Foto gemacht und abgespeichert... auch mehrere. Doch sobald ich einen Sensor dazu gebe, bekomme ich einen Fehler: "Failed to open file in writing mode". ( Zeile 142). Mir wird dann zwar korrekterweise die Werte vom HC-SR04 angezeigt, dafür aber reagiert die Cam nicht mehr...
Egal welchen Eingang ich benütze, selbes verhalten. Habs auch schon mit ESP-Now anstatt dem Sensor probiert - immer das selbe verhalten.
Was übersehe ich, dass die CAM bzw. die SD-Karte nicht mehr will, sobald ein Eingang belegt wird?
#include "SD_MMC.h"
#include "FS.h"
#include "esp_camera.h"
#include "esp_system.h"
// Pin definition for 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
//Your Sensor Pins
const int trigPin = 13;
const int echoPin = 15;
boolean startTimer = false;
unsigned long time_now = 0;
int pinSensor = 0 ,Cam_capture = 0 ,time_capture=0;
long duration;
int distance;
void setup()
{
Serial.begin(115200);
while (!Serial) { ; }
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
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;
if(psramFound()){
// FRAMESIZE_ +
//QQVGA/160x120//QQVGA2/128x160//QCIF/176x144//HQVGA/240x176
//QVGA/320x240//CIF/400x296//VGA/640x480//SVGA/800x600//XGA/1024x768
//SXGA/1280x1024//UXGA/1600x1200//QXGA/2048*1536
config.frame_size = FRAMESIZE_VGA;
config.jpeg_quality = 10;
config.fb_count = 2;
} else {
config.frame_size = FRAMESIZE_QQVGA;
config.jpeg_quality = 12;
config.fb_count = 1;
}
// Init Camera
esp_err_t err = esp_camera_init(&config);
if (err != ESP_OK) {
Serial.printf("Camera init failed with error 0x%x", err);
return;
}
Serial.print("SD-Card init...");
if (!SD_MMC.begin()) {
Serial.println("failed!");
return;
}
}
void loop()
{
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance= duration*0.034/2;
Serial.print("Distance: ");
Serial.println(distance);
if(distance<8) {
//Camera_capture();
Serial.println("Unterschritten");
}
else Serial.println("kein Foto");
Camera_capture();
delay(5000);
}
int imageNumber=1;
char fileNumber[6];
void Camera_capture() {
camera_fb_t * fb = NULL;
delay(200);
// Take Picture with Camera
fb = esp_camera_fb_get();
if(!fb) {
Serial.println("Camera capture failed");
return;
}
sprintf(fileNumber, "%05d", imageNumber++);
String imageFilename = "/image"+String(fileNumber)+".jpg";
fs::FS &fs = SD_MMC;
File imgFile = fs.open(imageFilename.c_str(), FILE_WRITE);
if (!imgFile) {
Serial.println("Failed to open file in writing mode");
} else {
imgFile.write(fb->buf, fb->len);
Serial.println("Saved " + imageFilename);
imageNumber++;
}
imgFile.close();
esp_camera_fb_return(fb);
Serial.println("OK");
}