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me-no-dev
2018-11-15 14:22:09 +01:00
commit 0d2547a501
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177
driver/include/esp_camera.h Executable file
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// 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_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"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Configuration structure for camera initialization
*/
typedef struct {
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 10KHz or 20KHz */
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 */
} 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_NOT_SUPPORTED (ESP_ERR_CAMERA_BASE + 3)
/**
* @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();
#ifdef __cplusplus
}
#endif
#include "img_converters.h"

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/*
* This file is part of the OpenMV project.
* Copyright (c) 2013/2014 Ibrahim Abdelkader <i.abdalkader@gmail.com>
* This work is licensed under the MIT license, see the file LICENSE for details.
*
* Sensor abstraction layer.
*
*/
#ifndef __SENSOR_H__
#define __SENSOR_H__
#include <stdint.h>
#define OV9650_PID (0x96)
#define OV2640_PID (0x26)
#define OV7725_PID (0x77)
typedef enum {
PIXFORMAT_RGB565, // 2BPP/RGB565
PIXFORMAT_YUV422, // 2BPP/YUV422
PIXFORMAT_GRAYSCALE, // 1BPP/GRAYSCALE
PIXFORMAT_JPEG, // JPEG/COMPRESSED
PIXFORMAT_RGB888, // 3BPP/RGB888
} pixformat_t;
typedef enum {
FRAMESIZE_QQVGA, // 160x120
FRAMESIZE_QQVGA2, // 128x160
FRAMESIZE_QCIF, // 176x144
FRAMESIZE_HQVGA, // 240x176
FRAMESIZE_QVGA, // 320x240
FRAMESIZE_CIF, // 400x296
FRAMESIZE_VGA, // 640x480
FRAMESIZE_SVGA, // 800x600
FRAMESIZE_XGA, // 1024x768
FRAMESIZE_SXGA, // 1280x1024
FRAMESIZE_UXGA, // 1600x1200
} framesize_t;
typedef enum {
GAINCEILING_2X,
GAINCEILING_4X,
GAINCEILING_8X,
GAINCEILING_16X,
GAINCEILING_32X,
GAINCEILING_64X,
GAINCEILING_128X,
} gainceiling_t;
typedef struct {
uint8_t MIDH;
uint8_t MIDL;
uint8_t PID;
uint8_t VER;
} sensor_id_t;
typedef struct _sensor sensor_t;
typedef struct _sensor {
sensor_id_t id; // Sensor ID.
uint8_t slv_addr; // Sensor I2C slave address.
pixformat_t pixformat;
framesize_t framesize;
// Sensor function pointers
int (*reset) (sensor_t *sensor);
int (*set_pixformat) (sensor_t *sensor, pixformat_t pixformat);
int (*set_framesize) (sensor_t *sensor, framesize_t framesize);
int (*set_contrast) (sensor_t *sensor, int level);
int (*set_brightness) (sensor_t *sensor, int level);
int (*set_saturation) (sensor_t *sensor, int level);
int (*set_gainceiling) (sensor_t *sensor, gainceiling_t gainceiling);
int (*set_quality) (sensor_t *sensor, int quality);
int (*set_colorbar) (sensor_t *sensor, int enable);
int (*set_whitebal) (sensor_t *sensor, int enable);
int (*set_gain_ctrl) (sensor_t *sensor, int enable);
int (*set_exposure_ctrl) (sensor_t *sensor, int enable);
int (*set_hmirror) (sensor_t *sensor, int enable);
int (*set_vflip) (sensor_t *sensor, int enable);
int (*set_aec2) (sensor_t *sensor, int enable);
int (*set_awb_gain) (sensor_t *sensor, int enable);
int (*set_agc_gain) (sensor_t *sensor, int gain);
int (*set_aec_value) (sensor_t *sensor, int gain);
int (*set_special_effect) (sensor_t *sensor, int effect);
int (*set_wb_mode) (sensor_t *sensor, int mode);
int (*set_ae_level) (sensor_t *sensor, int level);
int (*set_dcw) (sensor_t *sensor, int enable);
int (*set_bpc) (sensor_t *sensor, int enable);
int (*set_wpc) (sensor_t *sensor, int enable);
int (*set_raw_gma) (sensor_t *sensor, int enable);
int (*set_lenc) (sensor_t *sensor, int enable);
int (*set_pre) (sensor_t *sensor, int enable);
} sensor_t;
// Resolution table (in camera.c)
extern const int resolution[][2];
#endif /* __SENSOR_H__ */