esp32-cam 1. 出厂固件编译与测试

0. 环境

- ubuntu18
- esp32-cam
- usb转ttl ch340

硬件连接

esp32-cam	ch340板子
U0R	TXD
U0T	RXD
GND	GND
5V	5V

1. 安装依赖

sudo apt-get install vim
sudo apt install git
sudo apt-get install git wget flex bison gperf python python-pip python-setuptools python-serial python-click python-cryptography python-future python-pyparsing python-pyelftools cmake ninja-build ccache libffi-dev libssl-dev
sudo apt-get install git wget flex bison gperf python3 python3-pip python3-setuptools cmake ninja-build ccache libffi-dev libssl-dev dfu-util libusb-1.0-0

2. 克隆源码

git clone --recurse-submodules http://github.com/Ai-Thinker-Open/Ai-Thinker-Open_ESP32-CAMERA_LAN.git

问题：fatal: unable to access 'https://github.com/espressif/esp-face/': gnutls_handshake() failed: Error in the pull function.
解决办法：

$ gedit Ai-Thinker-Open_ESP32-CAMERA_LAN/.git/config

把
https
改为
http

再试：

git submodule update --recursive

3. 设置环境

3.0 设置pip源

mkdir ~/.pip
gedit ~/.pip/pip.conf
添加内容：
[global]
index-url = https://pypi.tuna.tsinghua.edu.cn/simple
[install]
trusted-host = https://pypi.tuna.tsinghua.edu.cn

3.1 esp-idf安装工具

cd Ai-Thinker-Open_ESP32-CAMERA_LAN/esp-idf

切换分支（建议使用README.md 中说明的本仓库使用esp-idf v4.0）

git checkout release/v4.0

安装

./install.sh

3.2 环境变量

cd Ai-Thinker-Open_ESP32-CAMERA_LAN/esp-idf
. ./export.sh

4. 编译

cd Ai-Thinker-Open_ESP32-CAMERA_LAN/examples/single_chip/camera_web_server
make menuconfig

问题：Linux错误 curses.h：No such file or directory

sudo apt-get install libncurses5-dev libncursesw5-dev

配置SPI FLASH

Serial flasher config -> -> Default serial port: /dev/ttyUSB0-> Default baud rate:    230400-> Flash SPI mode(DIO)-> Flash SPI speed: 40MHz-> FLash size: 4MB

根据板子配置引脚

Camera Web Server —>Camera Pins —> Select Camera Pinout —> 选择ESP32-CAM by AI-Thinker

配置wifi（AP模式）

camera_web -> Camera Web Server -> WiFi Settings-> 删除 WiFi STA SSID内容-> 删除 WiFi STA Password内容-> WiFi AP SSID:        AiThinker_Cam-> WiFi AP Password:    

    
编译

make -j8

串口权限

ls /dev/ttyUSB*
sudo chmod 777 /dev/ttyUSB1

永久修改 

whoami

该用户添加至dialout用户组，因为tty设备是属于dialout用户组

sudo usermod -aG dialout sunrise

5. 下载程序

5.1 ESP32进入BOOT模式

把 IO0 和 GND 用杜邦线或者跳线帽连接。

5.2 下载

make flash

5.3 串口观察

make monitor

6. 测试

6.1 web

电脑连接ESP32，WIFI连接

浏览器打开 192.168.4.1

参考：

[1]ESP32-CAM摄像头开发板，https://docs.ai-thinker.com/esp32-cam
[2]安信可ESP32-CAM摄像头开发demo--局域网拍照、实时视频、人脸识别，https://aithinker.blog.csdn.net/article/details/108000974
[3]Stream Video from ESP32 to Raspberry Pi，
https://gpiocc.github.io/learn/raspberrypi/esp/ml/2020/11/08/martin-ku-stream-video-from-esp32-to-raspberry-pi.html

下篇：

esp32-cam 2. python opencv 拉取摄像头内容-CSDN博客文章浏览阅读118次。python opencv 获取esp32-cam的视频流https://blog.csdn.net/qq_27158179/article/details/138419426