LoginSignup
13
8

More than 3 years have passed since last update.

@koki-iwaizumi(kouki iwaizumi)

カメラモジュールOV2640の使い方(ESP-WROOM-32)

Last updated at Posted at 2019-06-27

概要

ESP-WROOM-32を使ってカメラ―モジュールOV2640を制御してみました。いくつか引っかかった点があるので記載しておきます。
回路は下記を参考にしました。
https://github.com/igrr/esp32-cam-demo

OV2640
DSC_0418.JPG

データシート一覧

Register Listなど載っている
http://akizukidenshi.com/download/ds/omnivision/ov2640.pdf

Application Note
http://www.dragonwake.com/download/camera/ov2640/OV2640%20Camera%20Module%20Software%20Application%20Notes.pdf

参考記事

一番元となる資料
https://github.com/igrr/esp32-cam-demo

XCLK 20Mhz→6MHzへ変更したところ正常に動作
http://t3ta.hatenablog.com/entry/2018/01/16/211352

I2CとSCCBの違い　スレーブアドレスが0x60でSCCBの場合：0b01100000(write) 、0b01100001(read)
https://qiita.com/Rohira/items/07874504a43f0b07cdd9
http://marsee101.blog19.fc2.com/blog-entry-1322.html

ESP-WROOM-32 ピン配置
https://ht-deko.com/arduino/pic/esp-wroom-32_pinout_01.png

公式
https://github.com/espressif/esp32-camera

まずはSCCB通信まで

  1. XCLKにPWM信号を出力（カメラモジュールのクロックになる）
  2. リセットピンをLOW→HIGH(active lowのため)
  3. 0x1Dレジスタを読み込むと、0xA2であれば正常に通信できています。
app_main.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "freertos/event_groups.h"

#include "esp_system.h"
#include "esp_wifi.h"
#include "esp_event_loop.h"
#include "esp_log.h"
#include "esp_err.h"
#include "nvs_flash.h"

#include "driver/ledc.h"
#include "driver/i2c.h"

#define TAG "CAMERA_TEST"

/********* i2c ***********/
#define I2C_CAMERA_SCL_IO 23
#define I2C_CAMERA_SDA_IO 25
#define I2C_CAMERA_NUM I2C_NUM_0
#define I2C_CAMERA_TX_BUF_DISABLE 0
#define I2C_CAMERA_RX_BUF_DISABLE 0
#define I2C_CAMERA_FREQ_HZ 100000
#define ACK_CHECK_EN 0x1
#define ACK_CHECK_DIS 0x0
#define ACK_VAL 0x0
#define NACK_VAL 0x1

/********* camera ***********/
#define CAMERA_IO_RESET 15
#define CAMERA_IO_XCLK 27
#define CAMERA_XCLK_FREQ 6000000

#define CAMERA_PID_H 0x0A
#define CAMERA_PID_L 0x0B
#define CAMERA_MID_H 0x1C
#define CAMERA_MID_L 0x1D

/********* gpio ***********/
#define GPIO_OUTPUT_PIN_SEL  (1<<CAMERA_IO_RESET)

void init_i2c(){
    int i2c_master_port = I2C_NUM_0;
    i2c_config_t conf;
    conf.mode = I2C_MODE_MASTER;
    conf.sda_io_num = I2C_CAMERA_SDA_IO;
    conf.sda_pullup_en = GPIO_PULLUP_ENABLE;
    conf.scl_io_num = I2C_CAMERA_SCL_IO;
    conf.scl_pullup_en = GPIO_PULLUP_ENABLE;
    conf.master.clk_speed = I2C_CAMERA_FREQ_HZ;
    i2c_param_config(i2c_master_port, &conf);
    i2c_driver_install(i2c_master_port, conf.mode, I2C_CAMERA_RX_BUF_DISABLE, I2C_CAMERA_TX_BUF_DISABLE, 0);
}

esp_err_t init_camera_clock(){
    periph_module_enable(PERIPH_LEDC_MODULE);

    ledc_timer_config_t timer_conf = {
        .duty_resolution = 1,
        .freq_hz = CAMERA_XCLK_FREQ,
        .speed_mode = LEDC_HIGH_SPEED_MODE,
        .timer_num = LEDC_TIMER_0
    };
    esp_err_t err = ledc_timer_config(&timer_conf);
    if(err != ESP_OK){
        ESP_LOGE(TAG, "ledc_timer_config failed, err=%d", err);
        return err;
    }

    ledc_channel_config_t ch_conf = {
        .channel = LEDC_CHANNEL_0,
        .timer_sel = LEDC_TIMER_0,
        .intr_type = LEDC_INTR_DISABLE,
        .duty = 1,
        .speed_mode = LEDC_HIGH_SPEED_MODE,
        .gpio_num = CAMERA_IO_XCLK
    };
    err = ledc_channel_config(&ch_conf);
    if(err != ESP_OK){
        ESP_LOGE(TAG, "ledc_channel_config failed, err=%d", err);
        return err;
    }

    return ESP_OK;
}

esp_err_t read_camera_config(uint8_t* camera_mid_h, uint8_t reg){

    i2c_cmd_handle_t cmd = i2c_cmd_link_create();
    i2c_master_start(cmd);
    i2c_master_write_byte(cmd, 0b01100000, ACK_CHECK_EN);
    i2c_master_write_byte(cmd, reg, ACK_CHECK_EN);
    i2c_master_stop(cmd);
    esp_err_t err = i2c_master_cmd_begin(I2C_CAMERA_NUM, cmd, 10 / portTICK_RATE_MS);
    i2c_cmd_link_delete(cmd);

    if(err != ESP_OK){
        ESP_LOGE(TAG, "read_camera_config 1 failed, err=%d", err);
        return err;
    }

    cmd = i2c_cmd_link_create();
    i2c_master_start(cmd);
    i2c_master_write_byte(cmd, 0b01100001, ACK_CHECK_EN);
    i2c_master_read_byte(cmd, camera_mid_h, NACK_VAL);
    i2c_master_stop(cmd);
    err = i2c_master_cmd_begin(I2C_CAMERA_NUM, cmd, 10 / portTICK_RATE_MS);
    i2c_cmd_link_delete(cmd);

    if(err != ESP_OK){
        ESP_LOGE(TAG, "read_camera_config 2 failed, err=%d", err);
        return err;
    }

    return ESP_OK;
}

void app_main(){

    esp_log_level_set("*", ESP_LOG_VERBOSE);

    esp_err_t err = nvs_flash_init();
    if(err != ESP_OK){
        ESP_ERROR_CHECK(nvs_flash_erase());
        ESP_ERROR_CHECK(nvs_flash_init());
    }

    //GPIO設定
    gpio_config_t io_conf;
    io_conf.intr_type = GPIO_PIN_INTR_DISABLE;
    io_conf.mode = GPIO_MODE_OUTPUT;
    io_conf.pin_bit_mask = GPIO_OUTPUT_PIN_SEL;
    io_conf.pull_down_en = 0;
    io_conf.pull_up_en = 0;
    gpio_config(&io_conf);

    //CAMERAクロック出力
    init_camera_clock();

    //I2C初期化
    init_i2c();

    //CAMERAリセット 「RESET PIN = active low」
    gpio_set_level(CAMERA_IO_RESET, 0);
    vTaskDelay(10 / portTICK_RATE_MS);
    gpio_set_level(CAMERA_IO_RESET, 1);
    vTaskDelay(10 / portTICK_RATE_MS);

    //CAMERA接続確認
    uint8_t camera_pid[2], camera_mid[2];

    read_camera_config(&camera_mid[0], CAMERA_MID_L);
    ESP_LOGI(TAG, "app_main camera_mid_l=0x%X", camera_mid[0]); //0xA2であればOK
    if(camera_mid[0] != 0xA2){
        ESP_LOGE(TAG, "app_main failed, camera_mid_l=%X", camera_mid[0]);
        return;
    }

    read_camera_config(&camera_mid[1], CAMERA_MID_H);
    ESP_LOGI(TAG, "app_main camera_mid_h=0x%X", camera_mid[1]); //0x7FであればOK
    if(camera_mid[1] != 0x7F){
        ESP_LOGE(TAG, "app_main failed, camera_mid_h=%X", camera_mid[1]);
        return;
    }

    read_camera_config(&camera_pid[0], CAMERA_PID_L);
    ESP_LOGI(TAG, "app_main camera_pid_l=0x%X", camera_pid[0]);

    read_camera_config(&camera_pid[1], CAMERA_PID_H);
    ESP_LOGI(TAG, "app_main camera_pid_h=0x%X", camera_pid[1]);

    //処理終了
    ESP_LOGI(TAG, "FINISH");
    return;
}

画像取得

下記を参考に設定部分とDMA処理をできるだけ分けました。ただ、サイズ変更の際はSCCBでの設定及びDMAどちらにも影響するので設定変更する必要があるのでお忘れなく！
https://github.com/igrr/esp32-cam-demo

全ファイルはgitにアップしてます！
https://github.com/koki-iwaizumi/esp32-ov2640/blob/master/main/app_main.c

app_main.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "freertos/event_groups.h"

#include "esp_system.h"
#include "esp_wifi.h"
#include "esp_event_loop.h"
#include "esp_log.h"
#include "esp_err.h"
#include "nvs_flash.h"

#include "driver/i2c.h"
#include "driver/gpio.h"
#include "camera.h"
#include "http_server.h"

/********* config ***********/
#define WIFI_SSID "*"
#define WIFI_PASSWORD "*"

/********* i2c ***********/
#define I2C_CAMERA_TX_BUF_DISABLE 0
#define I2C_CAMERA_RX_BUF_DISABLE 0
#define I2C_CAMERA_FREQ_HZ 100000
#define I2C_CAMERA_NUM I2C_NUM_0
#define ACK_CHECK_EN 0x1
#define ACK_CHECK_DIS 0x0
#define ACK_VAL 0x0
#define NACK_VAL 0x1

#define CAMERA_SLAVE_ADDRESS_READ 0b01100001
#define CAMERA_SLAVE_ADDRESS_WRITE 0b01100000

/********* gpio ***********/
#define PIN_D0 35
#define PIN_D1 17
#define PIN_D2 34
#define PIN_D3 5
#define PIN_D4 39
#define PIN_D5 18
#define PIN_D6 36
#define PIN_D7 19
#define PIN_XCLK 27
#define PIN_PCLK 21
#define PIN_VSYNC 22
#define PIN_HREF 26
#define PIN_SDA 25
#define PIN_SCL 23
#define PIN_RESET 15

#define GPIO_OUTPUT_PIN_SEL  (1 << PIN_RESET)

static const char* TAG = "camera_demo app_main";

static EventGroupHandle_t s_wifi_event_group;
const int CONNECTED_BIT = BIT0;
static ip4_addr_t s_ip_addr;

/********* camera reg ***********/
static const uint8_t default_regs[][2] = {
    {0xFF, 0x00},
    {0x2C, 0xFF},
    {0x2E, 0xDF},

    {0xFF, 0x01},
    {0x3C, 0x32},
    {0x11, 0x80},
    {0x09, 0x02},
    {0x28, 0x00},
    {0x13, 0xE5},
    {0x14, 0x48},
    {0x15, 0x00},
    {0x2C, 0x0C},
    {0x33, 0x78},
    {0x3A, 0x33},
    {0x3B, 0xFB},
    {0x3E, 0x00},
    {0x43, 0x11},
    {0x16, 0x10},
    {0x39, 0x02},
    {0x35, 0x88},
    {0x22, 0x0A},
    {0x37, 0x40},
    {0x23, 0x00},
    {0x34, 0xA0},
    {0x06, 0x02},
    {0x06, 0x88},
    {0x07, 0xC0},
    {0x0D, 0xB7},
    {0x0E, 0x01},
    {0x4C, 0x00},
    {0x4A, 0x81},
    {0x21, 0x99},
    {0x24, 0x40},
    {0x25, 0x38},
    {0x26, 0x82},
    {0x48, 0x00},
    {0x49, 0x00},
    {0x5C, 0x00},
    {0x63, 0x00},
    {0x46, 0x00},
    {0x47, 0x00},
    {0x0C, 0x3A},
    {0x5D, 0x55},
    {0x5E, 0x7D},
    {0x5F, 0x7D},
    {0x60, 0x55},
    {0x61, 0x70},
    {0x62, 0x80},
    {0x7C, 0x05},
    {0x20, 0x80},
    {0x28, 0x30},
    {0x6C, 0x00},
    {0x6D, 0x80},
    {0x6E, 0x00},
    {0x70, 0x02},
    {0x71, 0x94},
    {0x73, 0xC1},
    {0x3D, 0x34},
    {0x5A, 0x57},
    {0x4F, 0xBB},
    {0x50, 0x9C},

    {0xFF, 0x00},
    {0xE5, 0x7F},
    {0xF9, 0xC0},
    {0x41, 0x24},
    {0xE0, 0x14},
    {0x76, 0xFF},
    {0x33, 0xA0},
    {0x42, 0x20},
    {0x43, 0x18},
    {0x4C, 0x00},
    {0x87, 0xD0},
    {0x88, 0x3F},
    {0xD7, 0x03},
    {0xD9, 0x10},
    {0xD3, 0x82},
    {0xC8, 0x08},
    {0xC9, 0x80},
    {0x7C, 0x00},
    {0x7D, 0x00},
    {0x7C, 0x03},
    {0x7D, 0x48},
    {0x7D, 0x48},
    {0x7C, 0x08},
    {0x7D, 0x20},
    {0x7D, 0x10},
    {0x7D, 0x0E},
    {0x90, 0x00},
    {0x91, 0x0E},
    {0x91, 0x1A},
    {0x91, 0x31},
    {0x91, 0x5A},
    {0x91, 0x69},
    {0x91, 0x75},
    {0x91, 0x7E},
    {0x91, 0x88},
    {0x91, 0x8F},
    {0x91, 0x96},
    {0x91, 0xA3},
    {0x91, 0xAF},
    {0x91, 0xC4},
    {0x91, 0xD7},
    {0x91, 0xE8},
    {0x91, 0x20},
    {0x92, 0x00},
    {0x93, 0x06},
    {0x93, 0xE3},
    {0x93, 0x03},
    {0x93, 0x03},
    {0x93, 0x00},
    {0x93, 0x02},
    {0x93, 0x00},
    {0x93, 0x00},
    {0x93, 0x00},
    {0x93, 0x00},
    {0x93, 0x00},
    {0x93, 0x00},
    {0x93, 0x00},
    {0x96, 0x00},
    {0x97, 0x08},
    {0x97, 0x19},
    {0x97, 0x02},
    {0x97, 0x0C},
    {0x97, 0x24},
    {0x97, 0x30},
    {0x97, 0x28},
    {0x97, 0x26},
    {0x97, 0x02},
    {0x97, 0x98},
    {0x97, 0x80},
    {0x97, 0x00},
    {0x97, 0x00},
    {0xA4, 0x00},
    {0xA8, 0x00},
    {0xC5, 0x11},
    {0xC6, 0x51},
    {0xBF, 0x80},
    {0xC7, 0x10},
    {0xB6, 0x66},
    {0xB8, 0xA5},
    {0xB7, 0x64},
    {0xB9, 0x7C},
    {0xB3, 0xAF},
    {0xB4, 0x97},
    {0xB5, 0xFF},
    {0xB0, 0xC5},
    {0xB1, 0x94},
    {0xB2, 0x0F},
    {0xC4, 0x5C},
    {0xA6, 0x00},
    {0xA7, 0x20},
    {0xA7, 0xD8},
    {0xA7, 0x1B},
    {0xA7, 0x31},
    {0xA7, 0x00},
    {0xA7, 0x18},
    {0xA7, 0x20},
    {0xA7, 0xD8},
    {0xA7, 0x19},
    {0xA7, 0x31},
    {0xA7, 0x00},
    {0xA7, 0x18},
    {0xA7, 0x20},
    {0xA7, 0xD8},
    {0xA7, 0x19},
    {0xA7, 0x31},
    {0xA7, 0x00},
    {0xA7, 0x18},
    {0x7F, 0x00},
    {0xE5, 0x1F},
    {0xE1, 0x77},
    {0xDD, 0x7F},
    {0xC2, 0x0E},

    {0x00, 0x00}
};

static const uint8_t svga_regs[][2] = {
    {0xFF, 0x01},
    {0x12, 0x40},
    {0x03, 0x0F},
    {0x32, 0x09},
    {0x17, 0x11},
    {0x18, 0x43},
    {0x19, 0x00},
    {0x1A, 0x4B},
    {0x3D, 0x38},
    {0x35, 0xDA},
    {0x22, 0x1A},
    {0x37, 0xC3},
    {0x34, 0xC0},
    {0x06, 0x88},
    {0x0D, 0x87},
    {0x0E, 0x41},
    {0x42, 0x03},

    {0xFF, 0x00},
    {0x05, 0x01},
    {0xE0, 0x04},
    {0xC0, 0x64},
    {0xC1, 0x4B},
    {0x8C, 0x00},
    {0x53, 0x00},
    {0x54, 0x00},
    {0x51, 0xC8},
    {0x52, 0x96},
    {0x55, 0x00},
    {0x57, 0x00},
    {0x86, 0x3D},
    {0x50, 0x80},
    {0xD3, 0x80},
    {0x05, 0x00},
    {0xE0, 0x00},

    {0x00, 0x00}
};

static const uint8_t jpeg_regs[][2] = {
    {0xFF, 0x00},
    {0xE0, 0x04},
    {0xDA, 0x18},
    {0xD7, 0x03},
    {0xE1, 0x77},
    {0x44, 0x0C},
    {0xE0, 0x00},

    {0x00, 0x00}
};

static const uint8_t framesize_low_regs[][2] = {
    {0xFF, 0x00},
    {0x05, 0x01},
    {0x5A, 0xA0},
    {0x5B, 0x78},
    {0x5C, 0x00},

    {0xFF, 0x01},
    {0x11, 0x83},

    {0x00, 0x00}
};

static const uint8_t framesize_high_regs[][2] = {
    {0xFF, 0x00},
    {0x05, 0x00},

    {0x00, 0x00}
};

static const uint8_t quality_regs[][2] = {
    {0xFF, 0x00},
    {0x44, 0x0F},

    {0x00, 0x00}
};

esp_err_t read_camera_config(uint8_t reg, uint8_t* data){

    i2c_cmd_handle_t cmd = i2c_cmd_link_create();
    i2c_master_start(cmd);
    i2c_master_write_byte(cmd, CAMERA_SLAVE_ADDRESS_WRITE, ACK_CHECK_EN);
    i2c_master_write_byte(cmd, reg, ACK_CHECK_EN);
    i2c_master_stop(cmd);
    esp_err_t err = i2c_master_cmd_begin(I2C_CAMERA_NUM, cmd, 10 / portTICK_RATE_MS);
    i2c_cmd_link_delete(cmd);

    if(err != ESP_OK){
        return err;
    }

    cmd = i2c_cmd_link_create();
    i2c_master_start(cmd);
    i2c_master_write_byte(cmd, CAMERA_SLAVE_ADDRESS_READ, ACK_CHECK_EN);
    i2c_master_read_byte(cmd, data, NACK_VAL);
    i2c_master_stop(cmd);
    err = i2c_master_cmd_begin(I2C_CAMERA_NUM, cmd, 10 / portTICK_RATE_MS);
    i2c_cmd_link_delete(cmd);

    if(err != ESP_OK){
        return err;
    }

    return ESP_OK;
}

esp_err_t write_camera_config(uint8_t reg, uint8_t data){

    i2c_cmd_handle_t cmd = i2c_cmd_link_create();
    i2c_master_start(cmd);
    i2c_master_write_byte(cmd, CAMERA_SLAVE_ADDRESS_WRITE, ACK_CHECK_EN);
    i2c_master_write_byte(cmd, reg, ACK_CHECK_EN);
    i2c_master_write_byte(cmd, data, ACK_CHECK_EN);
    i2c_master_stop(cmd);
    esp_err_t err = i2c_master_cmd_begin(I2C_CAMERA_NUM, cmd, 10 / portTICK_RATE_MS);
    i2c_cmd_link_delete(cmd);

    if(err != ESP_OK){
        return err;
    }

    return ESP_OK;
}

static esp_err_t write_frame(http_context_t http_ctx){

    http_buffer_t fb_data = {
        .data = camera_get_fb(),
        .size = camera_get_data_size(),
        .data_is_persistent = true
    };
    return http_response_write(http_ctx, &fb_data);
}

static void handle_jpg(http_context_t http_ctx, void* ctx){

    esp_err_t err = camera_run();
    if(err != ESP_OK){
        ESP_LOGD(TAG, "Camera capture failed with error = %d", err);
        return;
    }

    http_response_begin(http_ctx, 200, "image/jpeg", camera_get_data_size());
    http_response_set_header(http_ctx, "Content-disposition", "inline; filename=capture.jpg");
    write_frame(http_ctx);
    http_response_end(http_ctx);
}

static esp_err_t event_handler(void *ctx, system_event_t *event){

    switch(event->event_id){
        case SYSTEM_EVENT_STA_START:
            esp_wifi_connect();
            break;
        case SYSTEM_EVENT_STA_GOT_IP:
            xEventGroupSetBits(s_wifi_event_group, CONNECTED_BIT);
            s_ip_addr = event->event_info.got_ip.ip_info.ip;
            break;
        case SYSTEM_EVENT_STA_DISCONNECTED:
            esp_wifi_connect();
            xEventGroupClearBits(s_wifi_event_group, CONNECTED_BIT);
            break;
        default:
            break;
    }
    return ESP_OK;
}

static void initialise_wifi(void){

    tcpip_adapter_init();
    s_wifi_event_group = xEventGroupCreate();
    esp_event_loop_init(event_handler, NULL);
    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
    esp_wifi_init(&cfg);
    esp_wifi_set_storage(WIFI_STORAGE_RAM);
    wifi_config_t wifi_config = {
        .sta = {
            .ssid = WIFI_SSID,
            .password = WIFI_PASSWORD,
        },
    };
    esp_wifi_set_mode(WIFI_MODE_STA);
    esp_wifi_set_config(WIFI_IF_STA, &wifi_config);
    esp_wifi_start();
    esp_wifi_set_ps(WIFI_PS_NONE);
    ESP_LOGI(TAG, "Connecting to \"%s\"", wifi_config.sta.ssid);
    xEventGroupWaitBits(s_wifi_event_group, CONNECTED_BIT, false, true, portMAX_DELAY);
    ESP_LOGI(TAG, "Connected");
}

esp_err_t init_camera_clock(camera_config_t* config){

    periph_module_enable(PERIPH_LEDC_MODULE);

    ledc_timer_config_t timer_conf = {
        .duty_resolution = 1,
        .freq_hz = config->xclk_freq_hz,
        .speed_mode = LEDC_HIGH_SPEED_MODE,
        .timer_num = config->ledc_timer
    };
    esp_err_t err = ledc_timer_config(&timer_conf);
    if(err != ESP_OK){
        ESP_LOGE(TAG, "ledc_timer_config failed, err=%d", err);
        return err;
    }

    ledc_channel_config_t ch_conf = {
        .channel = config->ledc_channel,
        .timer_sel = config->ledc_timer,
        .intr_type = LEDC_INTR_DISABLE,
        .duty = 1,
        .speed_mode = LEDC_HIGH_SPEED_MODE,
        .gpio_num = config->pin_xclk
    };
    err = ledc_channel_config(&ch_conf);
    if(err != ESP_OK){
        ESP_LOGE(TAG, "ledc_channel_config failed, err=%d", err);
        return err;
    }

    return ESP_OK;
}

void init_i2c(camera_config_t* config){
    int i2c_master_port = I2C_NUM_0;
    i2c_config_t conf;
    conf.mode = I2C_MODE_MASTER;
    conf.sda_io_num = config->pin_sscb_sda;
    conf.sda_pullup_en = GPIO_PULLUP_ENABLE;
    conf.scl_io_num = config->pin_sscb_scl;
    conf.scl_pullup_en = GPIO_PULLUP_ENABLE;
    conf.master.clk_speed = I2C_CAMERA_FREQ_HZ;
    i2c_param_config(i2c_master_port, &conf);
    i2c_driver_install(i2c_master_port, conf.mode, I2C_CAMERA_RX_BUF_DISABLE, I2C_CAMERA_TX_BUF_DISABLE, 0);
}

void app_main(){

    esp_log_level_set("*", ESP_LOG_VERBOSE);

    esp_err_t err = nvs_flash_init();
    if(err != ESP_OK){
        nvs_flash_erase();
        nvs_flash_init();
    }

    gpio_install_isr_service(0);

    camera_config_t camera_config = {
        .ledc_channel = LEDC_CHANNEL_0,
        .ledc_timer = LEDC_TIMER_0,
        .pin_d0 = PIN_D0,
        .pin_d1 = PIN_D1,
        .pin_d2 = PIN_D2,
        .pin_d3 = PIN_D3,
        .pin_d4 = PIN_D4,
        .pin_d5 = PIN_D5,
        .pin_d6 = PIN_D6,
        .pin_d7 = PIN_D7,
        .pin_xclk = PIN_XCLK,
        .pin_pclk = PIN_PCLK,
        .pin_vsync = PIN_VSYNC,
        .pin_href = PIN_HREF,
        .pin_sscb_sda = PIN_SDA,
        .pin_sscb_scl = PIN_SCL,
        .pin_reset = PIN_RESET,

        .xclk_freq_hz = 6000000,
        .width = 640,
        .height = 480,
    };

    ESP_LOGE(TAG, "xclk_freq_hz=%d[Hz]", camera_config.xclk_freq_hz);

    //GPIO設定
    gpio_config_t io_conf;
    io_conf.intr_type = GPIO_PIN_INTR_DISABLE;
    io_conf.mode = GPIO_MODE_OUTPUT;
    io_conf.pin_bit_mask = GPIO_OUTPUT_PIN_SEL;
    io_conf.pull_down_en = 0;
    io_conf.pull_up_en = 0;
    gpio_config(&io_conf);

    //CAMERA クロック出力
    init_camera_clock(&camera_config);

    //I2C 初期化
    init_i2c(&camera_config);

    //CAMERA リセット
    gpio_set_level(PIN_RESET, 0);
    vTaskDelay(10 / portTICK_RATE_MS);
    gpio_set_level(PIN_RESET, 1);
    vTaskDelay(10 / portTICK_RATE_MS);

    //CAMERA OV2640確認
    uint8_t camera_pid_h;
    read_camera_config(0x0A, &camera_pid_h);
    ESP_LOGI(TAG, "camera_pid_h=0x%02X", camera_pid_h);
    if(camera_pid_h != 0x26){
        ESP_LOGE(TAG, "failed, camera_pid_h=%02X", camera_pid_h);
        return;
    }

    //CAMERA システムリセット
    write_camera_config(0xFF, 0x01);
    write_camera_config(0x12, 0x80);
    vTaskDelay(10 / portTICK_RATE_MS);

    //CAMERA 設定書き込み
    int i = 0;
    while(default_regs[i][0]){
        write_camera_config(default_regs[i][0], default_regs[i][1]);
        i++;
    }
    i = 0;
    while(jpeg_regs[i][0]){
        write_camera_config(jpeg_regs[i][0], jpeg_regs[i][1]);
        i++;
    }
    i = 0;
    while(framesize_low_regs[i][0]){
        write_camera_config(framesize_low_regs[i][0], framesize_low_regs[i][1]);
        i++;
    }
    i = 0;
    while(svga_regs[i][0]){
        write_camera_config(svga_regs[i][0], svga_regs[i][1]);
        i++;
    }
    i = 0;
    while(framesize_high_regs[i][0]){
        write_camera_config(framesize_high_regs[i][0], framesize_high_regs[i][1]);
        i++;
    }
    i = 0;
    while(quality_regs[i][0]){
        write_camera_config(quality_regs[i][0], quality_regs[i][1]);
        i++;
    }

    //CAMERA その他設定
    err = camera_init(&camera_config);
    if(err != ESP_OK){
        ESP_LOGE(TAG, "Camera init failed with error 0x%x", err);
        return;
    }

    //CAMERA wifi設定
    initialise_wifi();
    http_server_t server;
    http_server_options_t http_options = HTTP_SERVER_OPTIONS_DEFAULT();
    http_server_start(&http_options, &server);

    http_register_handler(server, "/jpg", HTTP_GET, HTTP_HANDLE_RESPONSE, &handle_jpg, NULL);
    ESP_LOGI(TAG, "Open http://" IPSTR "/jpg for single image/jpg image", IP2STR(&s_ip_addr));

    ESP_LOGI(TAG, "Free heap: %u", xPortGetFreeHeapSize());
    ESP_LOGI(TAG, "Camera demo ready");
}
13
8
0

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
Sign upLogin
13
8