[PYTHON] Senden Sie mit ESP32-WROOM-32 aufgenommene Bilder an AWS (API Gateway → Lambda → S3).

Überblick

Der Titel bleibt derselbe, aber ich habe das mit ESP32-WROOM-32 aufgenommene Bild an AWS gesendet (API Gateway → Lambda → S3)!

Die Kamera verwendet OV2640. Die Kontrollmethode in ESP32 ist im vorherigen Artikel zusammengefasst. In diesem Artikel gehen wir davon aus, dass der Schaltplan bereits erstellt wurde. https://qiita.com/koki-iwaizumi/items/db81c46b0d1b39b01655

Erstellen Sie einen S3-Bucket

Erstellen Sie einen S3-Bucket, um das Bild zu speichern. Ich werde die Details weglassen, da ich nur einen Eimer erstelle.

Lambda-Einstellung

Erstellen Sie eine Lambda-Funktion, indem Sie auf Folgendes verweisen. Dieses Mal habe ich einen API-Schlüssel und eine Funktion mit Python 3.7 erstellt. https://dev.classmethod.jp/cloud/aws/getting-start-api-gateway/

Nach dem Erstellen der Funktion muss dieser Funktion die Rolle von S3 zugewiesen werden. Weisen Sie S3 daher anhand der folgenden Anweisungen zu. https://docs.aws.amazon.com/ja_jp/lambda/latest/dg/with-s3-example.html

Unten ist die Lambda-Funktion. Ändern Sie BUCKET_NAME in den S3-Bucket-Namen. Als Inhalt des Prozesses werden von base64 konvertierte Daten im json-Format {"image": "jpeg"} empfangen und nach dem base64-Datencode in S3 unter einem zufälligen Namen gespeichert. * Wir behandeln keine Ausnahmen, z. B. wenn eine Konvertierung mit base64 nicht möglich ist. Daher planen wir, sie später hinzuzufügen.

Setzen Sie den Trigger auf API Gateway und speichern Sie mit dem API-Schlüssel.

lambda_function.py

import boto3
import base64
import uuid

BUCKET_NAME = '*'

def lambda_handler(event, context):

    response =  {
        "status": "failed",
    }

    print(event)

    if "image" not in event:
        return response


    s3 = boto3.resource('s3')
    bucket = s3.Bucket(BUCKET_NAME)
    bucket.put_object(
        Key=f'{uuid.uuid4()}.jpg',
        Body=base64.b64decode(event["image"]),
        ContentType='image/jpeg')

    response["status"] = "success"

    return response

ESP-WROOM-32

Schreiben Sie das folgende Programm in ESP-WROOM-32. Alle Dateien sind auf git aufgelistet. https://github.com/koki-iwaizumi/esp32-ov2640/tree/aws-lambda

Nehmen Sie nach dem Herstellen einer Verbindung mit WLAN ein Image mit OV2640 auf, konvertieren Sie JPEG-Daten in base64 und fordern Sie das API-Gateway mit der Post-Methode an. Die Größe der JPEG-Daten beträgt VGA (640px: 480px).

Geben Sie einen beliebigen Wert für jede der folgenden Variablen ein. WIFI_SSID、WIFI_PASSWORD、AWS_ENDPOINT、AWS_API_KEY

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_http_client.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"

#include "mbedtls/base64.h"

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

/********* 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 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);
}

esp_err_t _http_event_handle(esp_http_client_event_t *evt){
    switch(evt->event_id){
        case HTTP_EVENT_ERROR:
            ESP_LOGI(TAG, "HTTP_EVENT_ERROR");
            break;
        case HTTP_EVENT_ON_CONNECTED:
            ESP_LOGI(TAG, "HTTP_EVENT_ON_CONNECTED");
            break;
        case HTTP_EVENT_HEADER_SENT:
            ESP_LOGI(TAG, "HTTP_EVENT_HEADER_SENT");
            break;
        case HTTP_EVENT_ON_HEADER:
            ESP_LOGI(TAG, "HTTP_EVENT_ON_HEADER");
            printf("%.*s", evt->data_len, (char*)evt->data);
            break;
        case HTTP_EVENT_ON_DATA:
            ESP_LOGI(TAG, "HTTP_EVENT_ON_DATA, len=%d", evt->data_len);
            if( ! esp_http_client_is_chunked_response(evt->client)){
                printf("%.*s", evt->data_len, (char*)evt->data);
            }
            break;
        case HTTP_EVENT_ON_FINISH:
            ESP_LOGI(TAG, "HTTP_EVENT_ON_FINISH");
            break;
        case HTTP_EVENT_DISCONNECTED:
            ESP_LOGI(TAG, "HTTP_EVENT_DISCONNECTED");
            break;
    }
    return ESP_OK;
}

static void http_post_task(){

	esp_http_client_config_t http_config = {
		.url = AWS_ENDPOINT,
		.event_handler = _http_event_handle,
		.method = HTTP_METHOD_POST,
	};

	unsigned char image0[15000];
	char image[15000];
	size_t olen;

	mbedtls_base64_encode(image0, sizeof(image0), &olen, camera_get_fb(), camera_get_data_size());
	sprintf(image, "{\"image\":\"%s\"}", image0);
	const char *post_data = (const char*)image;

	esp_http_client_handle_t client = esp_http_client_init(&http_config);
	esp_http_client_set_post_field(client, post_data, strlen(post_data));
	esp_http_client_set_header(client, "x-api-key", AWS_API_KEY);
	esp_http_client_set_header(client, "Content-Type", "application/json");

	esp_err_t err = esp_http_client_perform(client);
	if(err == ESP_OK){
	   ESP_LOGI(TAG, "Status = %d, content_length = %d", esp_http_client_get_status_code(client), esp_http_client_get_content_length(client));
	}
	esp_http_client_cleanup(client);

	while(1);
}

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-Einstellungen
	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);

	//KAMERA-Taktausgang
	init_camera_clock(&camera_config);

	//I2C-Initialisierung
	init_i2c(&camera_config);

	//KAMERA zurückgesetzt
	gpio_set_level(PIN_RESET, 0);
	vTaskDelay(10 / portTICK_RATE_MS);
	gpio_set_level(PIN_RESET, 1);
	vTaskDelay(10 / portTICK_RATE_MS);

	//CAMERA OV2640 Bestätigung
	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;
    }

	//KAMERA System zurückgesetzt
	write_camera_config(0xFF, 0x01);
	write_camera_config(0x12, 0x80);
	vTaskDelay(10 / portTICK_RATE_MS);

	//Schreiben der KAMERA-Einstellung
    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++;
    }

	//KAMERA Andere Einstellungen
    err = camera_init(&camera_config);
    if(err != ESP_OK){
        ESP_LOGE(TAG, "Camera init failed with error 0x%x", err);
        return;
    }

	//KAMERA WLAN-Einstellungen
    initialise_wifi();

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

	xTaskCreate(&http_post_task, "http_post_task", 50000, NULL, 5, NULL);

	vTaskDelay(10000 / portTICK_RATE_MS);
}

Lauf

Wenn ESP32 ausgeführt wird, wird das aufgenommene Bild in S3 gespeichert.

Referenzzusammenfassung

Erstellen Sie eine API-Gateway-Umgebung, um beim Erstellen von Grund auf zu lernen https://dev.classmethod.jp/cloud/aws/getting-start-api-gateway/

Lambda (Auslöser: API Gateway) https://blog.apar.jp/web/10804/

Erstellen Sie eine S3-Rolle https://docs.aws.amazon.com/ja_jp/lambda/latest/dg/with-s3-example.html

Speichern Sie die konvertierte base64-Bilddatei mit API Gateway + Lambda in S3 https://qiita.com/yumakkt/items/1a62d279e81d9f6d0c63

[Python] Dekodiert Base64-codierte Bilddaten. https://qiita.com/TsubasaSato/items/908d4f5c241091ecbf9b

POST-Bilder von der M5-Kamera https://qiita.com/dinosauria123/items/149535349d98f51bd876