Initial Import

driver/private_include/camera_common.h

@@ -0,0 +1,39 @@
+#pragma once
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include "rom/lldesc.h"
+#include "esp_err.h"
+#include "esp_intr_alloc.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/semphr.h"
+#include "freertos/task.h"
+#include "esp_camera.h"
+#include "sensor.h"
+
+typedef union {
+    struct {
+        uint8_t sample2;
+        uint8_t unused2;
+        uint8_t sample1;
+        uint8_t unused1;
+    };
+    uint32_t val;
+} dma_elem_t;
+
+typedef enum {
+    /* camera sends byte sequence: s1, s2, s3, s4, ...
+     * fifo receives: 00 s1 00 s2, 00 s2 00 s3, 00 s3 00 s4, ...
+     */
+    SM_0A0B_0B0C = 0,
+    /* camera sends byte sequence: s1, s2, s3, s4, ...
+     * fifo receives: 00 s1 00 s2, 00 s3 00 s4, ...
+     */
+    SM_0A0B_0C0D = 1,
+    /* camera sends byte sequence: s1, s2, s3, s4, ...
+     * fifo receives: 00 s1 00 00, 00 s2 00 00, 00 s3 00 00, ...
+     */
+    SM_0A00_0B00 = 3,
+} i2s_sampling_mode_t;
+