ESP32-CAM--使用（四）

深藏阁楼爱情的钟 2021-10-29 11:34 517阅读 0赞

#include "SSD1306.h"
    #include "esp_camera.h"
    
    SSD1306 display(0x3c, 15, 14); // sda:15,scl:14
    
    #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
    
    
    static camera_config_t camera_config = { 
        .pin_pwdn  = PWDN_GPIO_NUM,
        .pin_reset = RESET_GPIO_NUM,
        .pin_xclk = XCLK_GPIO_NUM,
        .pin_sscb_sda = SIOD_GPIO_NUM,
        .pin_sscb_scl = SIOC_GPIO_NUM,
    
        .pin_d7 = Y9_GPIO_NUM,
        .pin_d6 = Y8_GPIO_NUM,
        .pin_d5 = Y7_GPIO_NUM,
        .pin_d4 = Y6_GPIO_NUM,
        .pin_d3 = Y5_GPIO_NUM,
        .pin_d2 = Y4_GPIO_NUM,
        .pin_d1 = Y3_GPIO_NUM,
        .pin_d0 = Y2_GPIO_NUM,
        .pin_vsync = VSYNC_GPIO_NUM,
        .pin_href = HREF_GPIO_NUM,
        .pin_pclk = PCLK_GPIO_NUM,
    
        //XCLK 20MHz or 10MHz for OV2640 double FPS (Experimental)
        .xclk_freq_hz = 20000000,
        .ledc_timer = LEDC_TIMER_0,
        .ledc_channel = LEDC_CHANNEL_0,
    
        .pixel_format = PIXFORMAT_GRAYSCALE,//YUV422,GRAYSCALE,RGB565,JPEG
        .frame_size = FRAMESIZE_QQVGA,//QQVGA-QXGA Do not use sizes above QVGA when not JPEG
    
        .jpeg_quality = 12, //0-63 lower number means higher quality
        .fb_count = 1 //if more than one, i2s runs in continuous mode. Use only with JPEG
    };
    
    esp_err_t camera_init(){ 
        //initialize the camera
        esp_err_t err = esp_camera_init(&camera_config);
        if (err != ESP_OK) { 
            Serial.print("Camera Init Failed");
            return err;
        }
        return ESP_OK;
    }
    
    void process_image(int16_t x, int16_t y, int16_t width, int16_t height, const uint8_t *image, int16_t len)
    { 
    
      Serial.println("");
    
      display.drawXbm(0, 0, width, height, image);
      display.display();
    }
    
    esp_err_t camera_capture(){ 
        uint8_t * buf = NULL;
        size_t buf_len = 0;  
        
        //acquire a frame
        camera_fb_t * fb = esp_camera_fb_get();
        if (!fb) { 
            Serial.print("Camera Capture Failed");
            return ESP_FAIL;
        }
        
        //bool converted = frame2bmp(fb, &buf, &buf_len);
    
    // for(int i = 0;i < fb->len;i++)
    // { 
    // Serial.print(fb->buf[i], HEX);
    // Serial.print(" ");
    // } 
    // Serial.println(); 
        
        Serial.print(fb->len);
        //process_image(0, 0,128, 64, buf, buf_len);
        
        process_image(0, 0,128, 64, fb->buf, fb->len);
      
        esp_camera_fb_return(fb);
        return ESP_OK;
    }
    
    
    void setup() { 
      Serial.begin(115200);
      display.init();
      camera_init();
      camera_capture();
      Serial.println("sys is running");
    }
    
    void loop() { 
      delay(5000);
      camera_capture();
    
    }