rev120:
1. for STM32_CO2_RS485, add parity and dont reboot

rev119：
1. only for PM2.5, show AQI level

rev118:
1. only for CO2, leds indicate the range of CO2.
2. for CO2, float registers have conflict with old co2 registers. only keep FLOAT_ABCD type for special customer.

rev117:
1. only for HUM, Add the float registers of the temperature and humidity

rev116：
1. for CO2, fix HUM and Temp value jump between two sensors when SCD4X and SHT3X exist in older revision.

rev115:
1. for HUM, resume reg450,451 for temperatue and humidty calibration.

rev114：
1. for pressuer, fix the stack length of pressure task to avoid reboot.
2. avoid reboot caused by wifi transmit. 
3. support changing vendor name
4. swap bacnet value of ao1 & ao2 

rev113:
1. for HUM, cause reboot when no wifi module in last version.

rev112:
1. for co2_d_x, avoid show setting T/H point

rev111:
1. for mulit I2C sensor, basic test is ok

rev110：
1. support flashing using MSTP protocal 

rev109：
1. for PM2.5,PRESSUE, dont need setpoint funciton

rev108:
1. for CO2, fix register number of password acorrding to register list
2. update baclib， fix who-is command with range


rev102:
1. change bigger stack

rev101
1. avoid always reading EEP_SUB_PORT, read one time only when start-up.

rev100:
1. fix output issue in rev99

rev99：
1. add AQ sensor
2. save wifi information
3. enable wifi flag in srceen

rev98:
1. fix display if only tempertaure sensor, product =213, reg122 = 1

reg97:
1. for CO2, fix the issue cant fix humidy via t3000

rev96:
1. add uint for dewpoint, partial pressue,mixing ration,enthalpy

Rev95 
1. Add light sensor's value to bacnet AI

rev94:
1. Fix humidity calibration cannot be changed on screen

rev93:
1. Fixed temperature and humidity value still keep when sensor is offline
2. Added Tx and Rx icon on screen

rev92：FOR HUM_RS485, fix position of buttons

rev91：
1. fix calbiration of humidy
2. add calbirateion for light sensor

rev89:
1. fix display F when tempreraute source is SCD40

rev88:
1. for co2, fixe AO of HUM channel when mode is MANUAL
2. show humdiy 10% correctly, show 0% in last verison

rev87:
1. check all task to avoid task is locked.

rev86：
1. fix temperature_Task locked in recent version. 

rev85:	FOR HUM_RS485, ADD heartbeat LED

rev83:	For RTS

rev82: modify AO range of PM2.5 and PRESSURE, it is changed by mistake since rev80.

rev81：for CO2_NODE_RS485,add low_pri in key_task to avoid reboot by mistake

rev80: change AO range of default temperature -40 to 60 

rev79：change the stack of net _task bigger

rev78: add new co2 sensor SCD40

rev77: adjust task stack for every task.

rev75:
1. Disable WIFI, fixed button task locked in last revison.

rev74:
1. fix CO2 locked

rev73:
Restore calculating humidity parameters, this feature has been incorrectly hidden in recent releases

rev72:
Fix modbus read long bytes when baudrate is 9600.

rev71
1. initial ethenet chip if network task abnormal

rev70
1. For CO2,if SNESOR is SCD30, get rid of filter

rev69:
1. for wifi,add re-connect function if connection is interrupted.

REV68
1. FOR HUM, fix value of AI0
REV67
1.For PM2.5, add temperature and humidity
REV66
LCD backlight turn on time can be set
REV65
Add the light icon 
rev64
 modify the manual output part of PM2.5
REV63
The subnet_buf overflow caused a problem on output
REV62
Modify the serial priority to avoid resetting when processing large amounts of data
REV61
Modify the password Settings
REV60
The ID is limited to 1-254 and  saved to E2
rev59
Add register MAX_MASTER 29
rev58
Modify the display of PM2.5 for Wanger customer and add parity
rev57
Make the MSTP send BUF larger to avoid MSTP send overflow
rev56
Fixed buzzer issues, update  BACNET library .
rev55
add led status for node ,Show default value 0 when CO2 is not  detected .
rev54
Add WIFI and RSSI 
rev53
Clear the negative sign when displaying negative to positive numbers
rev52
Save the IP address obtained by DHCP
rev51
Compatible with two kinds of CO2 modules
rev50
AQI index adds customer custom form.

rev49
Fixed bugs of RTC, So that the device will not crash due to RTC broken.

rev48
Fix the display problem of the third line after the scroll bar is closed.Fixed the problem of CO2 sensor recognition and the configuration of a reset pin.Changed the scroll bar of PM2.5 to display AQI instead of ALARM.

rev47
Support PM2.5, Added AQI level of China and USA, register 126 for selection, 1 for China and 0 for USA.

rev46
Added an option to enable/disable status scroll line , change menu.

rev45
Added color LCD support, sensirion's CO2 sensor support, Add a range register 135 to the dot matrix screen PM25,Register 135 is set to 0, the range is 0-99ug / m3, register 135 is set to 1, the range is 0-999ug / m3.