You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
196 lines
6.6 KiB
196 lines
6.6 KiB
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
/*
|
|
* Example Use
|
|
*
|
|
static camera_config_t camera_example_config = {
|
|
.pin_pwdn = PIN_PWDN,
|
|
.pin_reset = PIN_RESET,
|
|
.pin_xclk = PIN_XCLK,
|
|
.pin_sscb_sda = PIN_SIOD,
|
|
.pin_sscb_scl = PIN_SIOC,
|
|
.pin_d7 = PIN_D7,
|
|
.pin_d6 = PIN_D6,
|
|
.pin_d5 = PIN_D5,
|
|
.pin_d4 = PIN_D4,
|
|
.pin_d3 = PIN_D3,
|
|
.pin_d2 = PIN_D2,
|
|
.pin_d1 = PIN_D1,
|
|
.pin_d0 = PIN_D0,
|
|
.pin_vsync = PIN_VSYNC,
|
|
.pin_href = PIN_HREF,
|
|
.pin_pclk = PIN_PCLK,
|
|
|
|
.xclk_freq_hz = 20000000,
|
|
.ledc_timer = LEDC_TIMER_0,
|
|
.ledc_channel = LEDC_CHANNEL_0,
|
|
.pixel_format = PIXFORMAT_JPEG,
|
|
.frame_size = FRAMESIZE_SVGA,
|
|
.jpeg_quality = 10,
|
|
.fb_count = 2
|
|
};
|
|
|
|
esp_err_t camera_example_init(){
|
|
return esp_camera_init(&camera_example_config);
|
|
}
|
|
|
|
esp_err_t camera_example_capture(){
|
|
//capture a frame
|
|
camera_fb_t * fb = esp_camera_fb_get();
|
|
if (!fb) {
|
|
ESP_LOGE(TAG, "Frame buffer could not be acquired");
|
|
return ESP_FAIL;
|
|
}
|
|
|
|
//replace this with your own function
|
|
display_image(fb->width, fb->height, fb->pixformat, fb->buf, fb->len);
|
|
|
|
//return the frame buffer back to be reused
|
|
esp_camera_fb_return(fb);
|
|
|
|
return ESP_OK;
|
|
}
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "esp_err.h"
|
|
#include "driver/ledc.h"
|
|
#include "sensor.h"
|
|
#include "sys/time.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* @brief Configuration structure for camera initialization
|
|
*/
|
|
typedef struct {
|
|
int pin_pwdn; /*!< GPIO pin for camera power down line */
|
|
int pin_reset; /*!< GPIO pin for camera reset line */
|
|
int pin_xclk; /*!< GPIO pin for camera XCLK line */
|
|
int pin_sscb_sda; /*!< GPIO pin for camera SDA line */
|
|
int pin_sscb_scl; /*!< GPIO pin for camera SCL line */
|
|
int pin_d7; /*!< GPIO pin for camera D7 line */
|
|
int pin_d6; /*!< GPIO pin for camera D6 line */
|
|
int pin_d5; /*!< GPIO pin for camera D5 line */
|
|
int pin_d4; /*!< GPIO pin for camera D4 line */
|
|
int pin_d3; /*!< GPIO pin for camera D3 line */
|
|
int pin_d2; /*!< GPIO pin for camera D2 line */
|
|
int pin_d1; /*!< GPIO pin for camera D1 line */
|
|
int pin_d0; /*!< GPIO pin for camera D0 line */
|
|
int pin_vsync; /*!< GPIO pin for camera VSYNC line */
|
|
int pin_href; /*!< GPIO pin for camera HREF line */
|
|
int pin_pclk; /*!< GPIO pin for camera PCLK line */
|
|
|
|
int xclk_freq_hz; /*!< Frequency of XCLK signal, in Hz. Either 20KHz or 10KHz for OV2640 double FPS (Experimental) */
|
|
|
|
ledc_timer_t ledc_timer; /*!< LEDC timer to be used for generating XCLK */
|
|
ledc_channel_t ledc_channel; /*!< LEDC channel to be used for generating XCLK */
|
|
|
|
pixformat_t pixel_format; /*!< Format of the pixel data: PIXFORMAT_ + YUV422|GRAYSCALE|RGB565|JPEG */
|
|
framesize_t frame_size; /*!< Size of the output image: FRAMESIZE_ + QVGA|CIF|VGA|SVGA|XGA|SXGA|UXGA */
|
|
|
|
int jpeg_quality; /*!< Quality of JPEG output. 0-63 lower means higher quality */
|
|
size_t fb_count; /*!< Number of frame buffers to be allocated. If more than one, then each frame will be acquired (double speed) */
|
|
} camera_config_t;
|
|
|
|
/**
|
|
* @brief Data structure of camera frame buffer
|
|
*/
|
|
typedef struct {
|
|
uint8_t * buf; /*!< Pointer to the pixel data */
|
|
size_t len; /*!< Length of the buffer in bytes */
|
|
size_t width; /*!< Width of the buffer in pixels */
|
|
size_t height; /*!< Height of the buffer in pixels */
|
|
pixformat_t format; /*!< Format of the pixel data */
|
|
struct timeval timestamp; /*!< Timestamp since boot of the first DMA buffer of the frame */
|
|
} camera_fb_t;
|
|
|
|
#define ESP_ERR_CAMERA_BASE 0x20000
|
|
#define ESP_ERR_CAMERA_NOT_DETECTED (ESP_ERR_CAMERA_BASE + 1)
|
|
#define ESP_ERR_CAMERA_FAILED_TO_SET_FRAME_SIZE (ESP_ERR_CAMERA_BASE + 2)
|
|
#define ESP_ERR_CAMERA_FAILED_TO_SET_OUT_FORMAT (ESP_ERR_CAMERA_BASE + 3)
|
|
#define ESP_ERR_CAMERA_NOT_SUPPORTED (ESP_ERR_CAMERA_BASE + 4)
|
|
|
|
/**
|
|
* @brief Initialize the camera driver
|
|
*
|
|
* @note call camera_probe before calling this function
|
|
*
|
|
* This function detects and configures camera over I2C interface,
|
|
* allocates framebuffer and DMA buffers,
|
|
* initializes parallel I2S input, and sets up DMA descriptors.
|
|
*
|
|
* Currently this function can only be called once and there is
|
|
* no way to de-initialize this module.
|
|
*
|
|
* @param config Camera configuration parameters
|
|
*
|
|
* @return ESP_OK on success
|
|
*/
|
|
esp_err_t esp_camera_init(const camera_config_t* config);
|
|
|
|
/**
|
|
* @brief Deinitialize the camera driver
|
|
*
|
|
* @return
|
|
* - ESP_OK on success
|
|
* - ESP_ERR_INVALID_STATE if the driver hasn't been initialized yet
|
|
*/
|
|
esp_err_t esp_camera_deinit();
|
|
|
|
/**
|
|
* @brief Obtain pointer to a frame buffer.
|
|
*
|
|
* @return pointer to the frame buffer
|
|
*/
|
|
camera_fb_t* esp_camera_fb_get();
|
|
|
|
/**
|
|
* @brief Return the frame buffer to be reused again.
|
|
*
|
|
* @param fb Pointer to the frame buffer
|
|
*/
|
|
void esp_camera_fb_return(camera_fb_t * fb);
|
|
|
|
/**
|
|
* @brief Get a pointer to the image sensor control structure
|
|
*
|
|
* @return pointer to the sensor
|
|
*/
|
|
sensor_t * esp_camera_sensor_get();
|
|
|
|
/**
|
|
* @brief Save camera settings to non-volatile-storage (NVS)
|
|
*
|
|
* @param key A unique nvs key name for the camera settings
|
|
*/
|
|
esp_err_t esp_camera_save_to_nvs(const char *key);
|
|
|
|
/**
|
|
* @brief Load camera settings from non-volatile-storage (NVS)
|
|
*
|
|
* @param key A unique nvs key name for the camera settings
|
|
*/
|
|
esp_err_t esp_camera_load_from_nvs(const char *key);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#include "img_converters.h"
|
|
|