
v7
1.add PIR function
2.modify record size
3.modify HTML page
3.modify record or transmit  method
4.add reset key function 

v8
1.add AP Channel selection

V9
1.add country selection
2.modify html border size
3.support special characters
4.support 2.4G
5.change PIR and rest gpio
6.change PIR strategy
7.close user-gpio

V10
1.support night vision function

V11
1.resolve no ack response problem

V12
1.add voice transmission by TCP
2.add AT command to control gpio

V13
1.Add the uplink audio support
2.Add AT command to send product ID

V14
1.support CRLF for AT command
2.change audio format from MP3 to PCM

V15
1.add RTSP audio, audio format AAC

V16
1.resolve RTSP delay or frozen problem
2.resolve RTSP can`t stream when selecting strem over wifi only mode

V17
1.add selector for RTSP selecting video and audio in html.

V18
1.resolve rstp audio reuse problem
2.delete rtsp sub channel
3.add AT command through uart2
4.add AT command "AT+AV SetVolume x" and "AT+AV SetGain"

v19
1.improve httpd priority


v21
1.resolve audio clipping when camera capture continuous dynamic scene

v22
1.Add UART Modem in html.
  two option: 
    UART2: use for uart2
    Off: receive data and transmit to TCP socket and use for AT command
2.Add AT command "AT+AV SetRecord on/off" to start and close record 

V22B
1.fix UART modem spelling mistake

V22C
1.change UART Modem
   Uart2:enabled, incoming TCP, corresponding to the Data Bypass Mode feature, will be routed to UART2
   Off: disabled

V23
1.add record on/off with AT Command when disable by html 
2.support usb ether
3.add repeater function
4.add static IP setting function

v24
1.set ntpd USA server and set PST8PDT time zone

v25
1.add Gateway and Netmask setting
2.resolve the html response delay problem

v26
1.add repeater fuction and configure automatically
2.resolve reboot crash problem in repeater mode
3.use WFV3918_HWv4_SDD(set SMPS in the SDD file to 1.8V) 
4.resolve wfv3918 can`t connect router without password

V27
1.add timezone
2.set MCS 0-2 for remote
3.open usb ether
4.resolve RTSP crash problem

V28
1.add OSD function
2.add password for RTSP

V29
1.Add time zones for around the world, list US and Inidan separately.
2.The name of device on router is "AmpedRF WFV3918".
3.Implement the function of Repeater.
4.Web page adjustments:
	4.1 Status View:
		4.1.1 the "SSID" , "Passwrod", "IP Address" show the actually strings when "Wifi Mode=AP"
		4.1.2 the "Band" , "Country", "IP AP Channel" show "--" when "Wifi Mode=Station"
	4.2 Wifi Configure:
		4.2.1 When "AP" selected, "SSID","Password","DHCP ", and "Gateway" can't operate.
		4.2.2 When "AP" selected, "IP Addr" and "Netmask " can be configured efficiently.
		4.2.3 When "Station" or "Repeater" selected, "Band","Country",and "AP Channel " can't operate.
		
V30
1.Add external rtc (pcf8563)

V32
1. fix: cannot reconnect after being disconnected from the AP for a long time.
2. add: store only video in SD card.
3. fix: the wireless profile was error after saving the timezone modification on the web page.

V33
1. fix: can't access web pages for configuration if browsing the video for a long time.
2. revese to use external RTC module.

V34
1. reverse: can get the sensor message in "/var/log/messages".

V35
Use Anyka SDK v2.9.02
These issues are fixed:
1. The audio task takes up too much CPU.
2. The audio is out of sync.
3. When the sd card is full, the previous records will not be overwritten (please ensure that there is at least 10% of the remaining capacity of the SD card when first using it on wfv3918).

There is a workaround for this issue : when both SD storage and RTSP are selected, RTSP always streams the substream, if need to get main stream from RTSP, select  "stream over Wi-Fi" only.
  >> 4. When sd storage is selected, there is a high probability that the video will freeze or no image will appear when viewing the video through rtsp." 

V36
fixed issue:
When not SD recording, rtsp main channel should streams 720p, but V35 streams 480p.

V37
fixed issue:
improved the bitrate of video main and sub channel, the picture clarity of 480p is close to 720p of V36

V38
fixed issue:
Add TCP/UART AT command function. 
//2022.09.13
fixed issue: Without loud noises it doesn't transmit audio. When a loud noise occurs its does.
Shielding this line of code:ak_ai_set_nr_agc, and ak_ai_set_aec set to enable, ak_ai_set_frame_interval set to 60ms
//2022.09.14/1
ak_ai_set_nr set to enable, ak_ai_set_frame_interval set to 100ms, if not 100ms, the record file playing ts will be error.
//2022.9.14/2
modify the macro AUDIO_DEFAULT_INTERVAL to 20ms,so
ak_ai_set_frame_interval set to 20ms, the record file ts also be 20ms, since they use the same macro value.