The RAKwireless Unified Interface V3 (RUI3) is designed to help IoT developers make their IoT products faster. It is compatible with RAK LPWAN modules and supports the standard AT Commands and the Binary Mode. The Binary mode is an improved version of the AT command with its efficient byte-array-based protocol and implementation of checksum. RUI3 also allows you to create your own custom firmware using RUI3 APIs that are compatible with popular IDEs like Arduino and Visual Studio. With custom firmware, you will not need any external host microcontroller or microprocessor, which can save you cost, circuit board space, and current consumption.

RUI3 v4.0.0 Release Note

March 2, 2023

4.0.0

Added

No.	Feature	Description	Reference
1	AT version update to 1.5.9 version	Adding AT commands	-
2	API version update to 3.2.4 version	Adding API commands	-
3	Support new WisBlock	Support new WisBlock-Apollo (RAK11720+RAK11722)	-
4	Support LPM level function	Support 2 types of LPM level and can choose for saving current consumption AT+LPMLVL - get or set low-power mode level.	RUI3 > AT Command Manual
5	Enable LBT function	Support LBT function for Japan & Korea region AT+LBT - get or set the LoRaWAN LBT (Japan & Korea) AT+LBTRSSI - get or set the LoRaWAN LBT RSSI (Japan & Korea) AT+LBTSCANTIME - get or set the LoRaWAN LBT scan time (Japan & Korea).	RUI3 > AT Command Manual

Changed

No.	Feature	Description
1	Change LPM default setting	Set LPM=0 as default setting which is disable LPM at the beginning.
2	Enhance USB performance	Enhance USB performance and add 238 bytes buffer for writing.

Fixed

Daily Build No. / Bug No.	Description
-	Fixed compile problem of Gas Sensor SGP40. Sensirion Gas Sensor SGP40 compile problem is solved.
-	Fixed AT+BAUD command. AT+BAUD: ATR would restore BaudRate to default (115200).
-	Fixed AT+CHE command. AT+CHE: In region EU868 which is CHE unsupported, input AT+CHE=? will return AT_ERROR.
-	Fixed AT+CHS command. AT+CHS: In region EU868 which is CHS unsupported, input AT+CHS=? will return AT+CHS=0.
-	Fixed AT+ADDMULC command. AT+ADDMULC: Add 5th multicast group would cause AT_ERROR. AT+ADDMULC: Add a multicast group with DevAddr = "00000000" would cause AT_ERROR. AT+ADDMULC: Add a multicast group with over-range frequency would cause AT_ERROR. AT+ADDMULC: Unexpected OK while adding Multicast group with periodicity value, which include '8','-1','中', 'a', '-', '*', '@', 's' in CLASS C. AT+ADDMULC: Unexpected OK while adding Multicast group with periodicity value in Class C. AT+ADDMULC: Add a multicast group with DataRate string "01" (format from LSTMULC) would cause AT_PARAM_ERROR.
-	Fixed AT+NWM command. AT+NWM: In p2p_lora mode, DUT could modify DEVEUI.
-	Fixed input invalid AT command return value. Sometimes, input valid AT Commands will return AT_ERROR.
-	Fixed confirmed uplink to response ACK. DUT use confirmed uplink to response ACK.
-	Fixed Apollo3 P2P mode abnormal.
-	Fixed LPM function abnormal.
-	Fixed AT+CERTIF description. AT+CERTIF would activate certification mode as AT+CERTIF=1 do.
-	Fixed Serial.begin(xxxx) example. Missing Serial.begin(xxxx); in quite a few examples.
-	Fixed AT+SLEEP command. AT+SLEEP for permanent sleep mode when AT+LPM=0.
-	Fixed AT+JOIN=1:1:240:240 behavior. AT+JOIN=1:1:240:240 is not as expected.
-	Fixed ATR command. RAK4630 RUI_4.0.0_219 ATR command throws error, then starts join requests.
-	Fixed erased HW model issue. RAK3172 firmware upgrade from V3.4.2 to 4.0.0_219 erases HW model.
-	Fixed API can't wakeup device during LPM mode. RAK11720 can't wakeup when enable LPM via API.
-	Fixed uplink BUSY_ERROR issue. RAK4631 uplink BUSY_ERROR after about 20 minutes of continuous transmission.
-	Fixed RAK4631 can’t connect with WisToolBox issue.
-	Fixed RAK11720 can't wakeup during P2P receiving window open (over 10s or do not close windows).
-	Fixed RAK4631: api.system.sleep.all() will sleep 2 times.
-	Fixed HW model: Setting value is 0 after upgrading firmware. HW model value is "0" after upgrade from RUI_3.4.2 to RUI_4.0.0.
-	Fixed LoRa P2P do not work on v3.5.4 and v4.0.0.
-	Fixed LoRa P2P AT+PRECV behavior issue.