esp-who

搭建esp-who环境，测试web camera

参考文档

测试web camera

树莓派
sudo apt-get install git wget flex bison gperf python python-pip python-setuptools cmake ninja-build ccache libffi-dev libssl-dev dfu-util
sudo apt-get install libncurses5-dev libncursesw5-dev
已经有python3，不用装，没有就装一下：
- sudo apt-get install python3 python3-pip python3-setuptools
- 这个是不要的：sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 10
git clone --recursive https://github.com/espressif/esp-who.git
cd esp-who
cd esp-idf && ./install.sh && cd -
. ./esp-idf/export.sh
cd examples/single_chip/camera_web_server

idf.py menuconfig

 /home/pi/esp-who/examples/single_chip/camera_web_server/sdkconfig - Espressif I
o→ Camera Web Server → WiFi Settings ──────────────────────────────────────────
  ┌───────────────────────────── WiFi Settings ─────────────────────────────┐
  │  Arrow keys navigate the menu.  <Enter> selects submenus ---> (or empty │
  │  submenus ----).  Highlighted letters are hotkeys.  Pressing <Y>        │
  │  includes, <N> excludes, <M> modularizes features.  Press <Esc><Esc> to │
  │  exit, <?> for Help, </> for Search.  Legend: [*] built-in  [ ]         │
  │ ┌─────────────────────────────────────────────────────────────────────┐ │
  │ │    (zengjf) Camera Host Name                                        │ │
  │ │    (zengjf) WiFi STA SSID                                           │ │
  │ │    (xxxxxxxxx) WiFi STA Password                                    │ │
  │ │    (ESP32-Camera) WiFi AP SSID                                      │ │
  │ │    ()  WiFi AP Password                                             │ │
  │ │    (1) Maximal STA connections                                      │ │
  │ │    ()  WiFi AP Channel                                              │ │
  │ │    (192.168.4.1) WiFi AP IP Address                                 │ │
  │ │    (5) Maximum retry                                                │ │
  │ │                                                                     │ │
  │ └─────────────────────────────────────────────────────────────────────┘ │
  ├─────────────────────────────────────────────────────────────────────────┤
  │        <Select>    < Exit >    < Help >    < Save >    < Load >         │
  └─────────────────────────────────────────────────────────────────────────┘

cat auto.sh

#!/bin/bash

# if [ -z "`idf.py --version | grep 'command not found'`" ]; then
#         echo "~/esp/esp-idf/export.sh"
#         . ~/esp/esp-idf/export.sh
# fi

# [    3.717759] usb 1-1.1: cp210x converter now attached to ttyUSB0
USBDevice=`dmesg | grep 'cp210x' | grep 'ttyUSB*'`

if [ ! -z "$USBDevice" ]; then
        deviceName=${USBDevice##* }
        idf.py build
        idf.py -p /dev/$deviceName flash
        idf.py -p /dev/$deviceName monitor
fi

log输出

I (1857) wifi:wifi driver task: 3ffc6634, prio:23, stack:3584, core=0
I (1857) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
I (1857) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
I (1877) wifi:wifi firmware version: 101cee8
I (1877) wifi:config NVS flash: enabled
I (1877) wifi:config nano formating: disabled
I (1877) wifi:Init dynamic tx buffer num: 32
I (1887) wifi:Init data frame dynamic rx buffer num: 32
I (1887) wifi:Init management frame dynamic rx buffer num: 32
I (1897) wifi:Init management short buffer num: 32
I (1897) wifi:Init static tx buffer num: 16
I (1907) wifi:Init static rx buffer size: 1600
I (1907) wifi:Init static rx buffer num: 10
I (1907) wifi:Init dynamic rx buffer num: 32
I (1917) camera wifi: wifi_init_softap finished.SSID:ESP32-Camera password:
I (1927) camera wifi: wifi_init_sta finished.
I (1927) camera wifi: connect to ap SSID:zengjf password:xxxxxxxxx
W (1937) phy_init: failed to load RF calibration data (0xffffffff), falling back to full calibration
I (2097) phy: phy_version: 4180, cb3948e, Sep 12 2019, 16:39:13, 0, 2
I (2157) wifi:mode : sta (ac:67:b2:6f:aa:44) + softAP (ac:67:b2:6f:aa:45)
I (2157) wifi:Total power save buffer number: 8
I (2157) wifi:Init max length of beacon: 752/752
I (2157) wifi:Init max length of beacon: 752/752
I (2167) wifi:Set ps type: 0

I (2167) gpio: GPIO[13]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (2177) gpio: GPIO[14]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (2187) gpio: GPIO[5]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (2197) gpio: GPIO[13]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (2207) gpio: GPIO[14]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (2217) gpio: GPIO[25]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (2227) gpio: GPIO[27]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (2227) gpio: GPIO[34]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (2237) gpio: GPIO[35]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (2247) gpio: GPIO[36]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (2257) gpio: GPIO[37]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (2267) gpio: GPIO[38]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (2277) gpio: GPIO[39]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (2287) sccb: pin_sda 18 pin_scl 23

I (2407) camera: Detected OV2640 camera
I (2407) camera: Allocating 2 frame buffers (750 KB total)
I (2407) camera: Allocating 375 KB frame buffer in PSRAM
I (2507) camera: Allocating 375 KB frame buffer in PSRAM
I (2927) camera_httpd: Starting web server on port: '80'
I (2927) camera_httpd: Starting stream server on port: '81'
I (3797) wifi:ap channel adjust o:1,1 n:11,2
I (3797) wifi:new:<11,0>, old:<1,1>, ap:<11,2>, sta:<11,0>, prof:1
I (4577) wifi:state: init -> auth (b0)
I (4587) wifi:state: auth -> assoc (0)
I (4587) wifi:state: assoc -> run (10)
I (4607) wifi:connected with zengjf, aid = 75, channel 11, BW20, bssid = 04:d3:b5:e5:a3:08
I (4607) wifi:security type: 3, phy: bgn, rssi: -26
I (4647) wifi:pm start, type: 0

I (4687) wifi:AP's beacon interval = 102400 us, DTIM period = 1
I (5347) tcpip_adapter: sta ip: 192.168.3.22, mask: 255.255.255.0, gw: 192.168.3.1
I (5347) camera wifi: got ip:192.168.3.22

http://192.168.3.22/

IP Camera分析

<img id="stream" src="http://192.168.3.22:81/stream" crossorigin="">
参考文档
- 使用 multipart/x-mixed-replace 实现
- 利用flask将opencv实时视频流输出到浏览器
mjpg-streamer
- 处理发送给浏览器的数据处理核心
sudo apt-get install libjpeg-dev

git clone https://github.com/jacksonliam/mjpg-streamer

如果前面没有安装libjpeg-dev，编译报错没有头文件，需要先删除_build目录，否者会出现段错误
- jacksonliam/mjpg-streamer#218
make
help
- ./mjpg_streamer -i "input_uvc.so --help"
- ./mjpg_streamer -o "./output_http.so -h"

使用方法参考：start.sh

./mjpg_streamer -i "./input_uvc.so" -o "./output_http.so -w ./www -p 8008 -l 192.168.137.2"

MJPG Streamer Version: git rev: 85f89a8c321e799fabb1693c5d133f3fb48ee748
 i: Using V4L2 device.: /dev/video0
 i: Desired Resolution: 640 x 480
 i: Frames Per Second.: -1
 i: Format............: JPEG
 i: TV-Norm...........: DEFAULT
 i: Could not obtain the requested pixelformat: MJPG , driver gave us: YUYV
    ... will try to handle this by checking against supported formats.
    ... Falling back to YUV mode (consider using -yuv option). Note that this requires much more CPU power
UVCIOC_CTRL_ADD - Error at Pan (relative): Inappropriate ioctl for device (25)
UVCIOC_CTRL_ADD - Error at Tilt (relative): Inappropriate ioctl for device (25)
UVCIOC_CTRL_ADD - Error at Pan Reset: Inappropriate ioctl for device (25)
UVCIOC_CTRL_ADD - Error at Tilt Reset: Inappropriate ioctl for device (25)
UVCIOC_CTRL_ADD - Error at Pan/tilt Reset: Inappropriate ioctl for device (25)
UVCIOC_CTRL_ADD - Error at Focus (absolute): Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Pan (relative): Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Tilt (relative): Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Pan Reset: Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Tilt Reset: Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Pan/tilt Reset: Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Focus (absolute): Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at LED1 Mode: Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at LED1 Frequency: Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Disable video processing: Inappropriate ioctl for device (25)
UVCIOC_CTRL_MAP - Error at Raw bits per pixel: Inappropriate ioctl for device (25)
 o: www-folder-path......: ./www/
 o: HTTP TCP port........: 8008
 o: HTTP Listen Address..: 192.168.137.2
 o: username:password....: disabled
 o: commands.............: enabled

http://192.168.137.2:8008/
- http://192.168.137.2:8008/stream.html
  - <img id="streamimage" class="xform" src="./?action=stream">

/var/www/html/index.html

<!DOCTYPE html>
<html>
  <head>
    <title>IP Camera</title>
  </head>

  <body>
    <div>
      <img src="http://192.168.137.2:8008?action=stream">
    </div>
  </body>
</html>

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IP Camera分析

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参考文档

测试web camera

IP Camera分析