support RGB565

driver/camera.c

@@ -1108,22 +1108,13 @@ esp_err_t camera_init(const camera_config_t* config)
         }
         s_state->fb_bytes_per_pixel = 1;       // frame buffer stores Y8
     } else if (pix_format == PIXFORMAT_YUV422 || pix_format == PIXFORMAT_RGB565) {
+            s_state->fb_size = s_state->width * s_state->height * 2;
+            if (is_hs_mode() && s_state->sensor.id.PID != OV7725_PID) {
                 if(s_state->sensor.id.PID == OV7670_PID) {
-            s_state->fb_size = s_state->width * s_state->height * 3;
-            if (is_hs_mode()) {
                     s_state->sampling_mode = SM_0A0B_0B0C;
-                s_state->dma_filter = &dma_filter_rgb888_highspeed;
                 }else{
-                s_state->sampling_mode = SM_0A0B_0C0D;
-                s_state->dma_filter = &dma_filter_rgb888;
-            }
-            s_state->in_bytes_per_pixel = 2;       // camera sends RGB565
-            s_state->fb_bytes_per_pixel = 3;       // frame buffer stores RGB888
-        }
-        else {        
-            s_state->fb_size = s_state->width * s_state->height * 2;
-            if (is_hs_mode() && s_state->sensor.id.PID != OV7725_PID) {
                     s_state->sampling_mode = SM_0A00_0B00;
+                }
                 s_state->dma_filter = &dma_filter_yuyv_highspeed;
             } else {
                 s_state->sampling_mode = SM_0A0B_0C0D;
@@ -1131,11 +1122,14 @@ esp_err_t camera_init(const camera_config_t* config)
             }
             s_state->in_bytes_per_pixel = 2;       // camera sends YU/YV
             s_state->fb_bytes_per_pixel = 2;       // frame buffer stores YU/YV/RGB565
-        }
     } else if (pix_format == PIXFORMAT_RGB888) {
         s_state->fb_size = s_state->width * s_state->height * 3;
         if (is_hs_mode()) {
+            if(s_state->sensor.id.PID == OV7670_PID) {
+                s_state->sampling_mode = SM_0A0B_0B0C;
+            }else{
                 s_state->sampling_mode = SM_0A00_0B00;
+            }
             s_state->dma_filter = &dma_filter_rgb888_highspeed;
         } else {
             s_state->sampling_mode = SM_0A0B_0C0D;

sensors/ov7670.c

@@ -224,6 +224,7 @@ int ret;
 
     switch (pixformat) {
         case PIXFORMAT_RGB565:
+        case PIXFORMAT_RGB888:
             ret = ov7670_write_array(sensor, ov7670_fmt_rgb565);
         break;