RAK4200 Module AT Command Manual
Introduction
The RAK4200 module is designed to simplify LoRa P2P peer-to-peer and LoRaWAN communication. This module saves you in dealing with complicated SPI protocol with the LoRa transceivers. Instead, a well-known serial communication interface is provided for sending commands and requesting the internal status of the module. This approach allows a straightforward way to integrate LoRa technology into your projects.
On top of this serial interface, a set of AT commands is defined. An external microcontroller will be able to control the RAK4200 module as a classic AT modem. Through the AT commands, you can set parameters of the LoRaWAN communication, controlling GPIO pins, analog inputs, etc.
In the RAK4200 module, the serial communication is exposed on the UART1 port, through Pin 4 (UART1_TX) and Pin 5 (UART1_RX). The parameters of the UART1 communication are 115200 / 8-N-1. The firmware upgrade is also possible through this port. To get familiar with the pin distribution of this module and find a schematic circuit of a reference application, refer to RAK4200 Datasheet. A summary is also provided in the Appendix IV.
In addition, the RAK4200 module also exposes another serial port through Pin 2 (UART2_TX) and Pin 1 (UART2_RX). This port is named UART2. You can use it to connect another MCU or an additional UART peripheral, such as a GPS module.
UART2 is Pin 2 (TX2) and Pin 1 (RX2) on modules. In the case that the target application only requires one single UART port, then it is recommended to make use of the UART2 to connect to your MCU and reserve the UART1 for future firmware upgrades.
Links to Quick Start Guide
For AT commands example usage, you can check these sections of the quick start guide:
Software Tool
If you don't have a serial port tool yet, it is recommended to download and install the RAK Serial Port Tool. There are some ready-made AT commands in this tool that will be very useful for you.
For more detailed information on how to use this tool, refer to the following guide:
Content
- RAK4200 Module AT Command Manual
- Introduction
- Content
- AT Command Syntax
- Error Code Table
- General AT Command
- Interface Type AT Command
- LoRaWAN Type AT Command
- LoRa P2P Type AT Command
- Appendix I: Data Rate by Region
- Appendix II: TX Power by Region
- Appendix III: Maximum Transmission Load by Region
- Appendix IV: Pin Description of RAK4200
AT Command Syntax
The AT command is based on ASCII characters. A command begins with the prefix at and ends with <CR><LF> (i.e. \r\n). The maximum length is 255 characters which includes the <CR><LF> characters at the end of the command. For the rest of the document, the \r\n part is omitted for the sake of clarity.
The AT commands can be classified into the following groups:
- Read Command: Reads the current configuration or status of the module. The command name and the list of parameters are separated by the
=character. The<m>parameter is separated with its associated value<n>by the:character.
`at+get_config=<m>:<n>`
- Write Command: Writes/modifies the current configuration of the module. The command name and the list of parameters are separated by the
=character. The<m>parameter is separated with its associated value<n>by the:character.
`at+set_config=<m>:<n>`
- Operational Command: Some commands are neither read nor write commands but are used to execute an action.
at+send=lora:<m>:<n> // Sends data through the LoRa transceiver.
- Special Command: The RAK4200 UART port has two operational modes: Configuration Mode (default mode) and Data Transmission Mode. Data transmission mode allows you to send ASCII payloads directly to the network server via UART without using any AT Command interface like
at+send=lora:X:YYY. Data transmission mode is explained further on Interface Type AT Command section of this document.
To enable data transmission mode, you need to input at+set_config=device:uart_mode:<index>:<mode> command. To switch back from data transmission mode to configuration mode (AT command default mode), the command to be entered is +++ and does not contain terminators such as \r and \n.
After the command is executed by the module, a reply is sent back to the external MCU. In the case the command is successful, the usual reply has the following format:
OK [information]\r\n
Only Read commands have information in the replied message, while Write commands do not have an informative description.
The firmware you developed, running in the external MCU, will expect at a minimum a string of Ok\r\n after sending a successful command to the module. On the other hand, when the command is not successfully executed by the module, a reply will be received in the following format:
ERROR: [ErrCode]\r\n
Error Code Table
| Error Code | Description |
|---|---|
| 1 | The last command received is an unsupported AT command. |
| 2 | Invalid parameter in the AT command. |
| 3 | There is an error when reading or writing the flash memory. |
| 5 | There is an error when sending data through the UART port. Check if you exceed 256 bytes UART buffer. |
| 80 | The LoRa transceiver is busy, could not process a new command. |
| 81 | LoRa service is unknown. Unknown MAC command received by the node. Execute commands that are not supported in the current state, such as sending the at+join command in P2P mode. |
| 82 | The LoRa parameters are invalid. |
| 83 | The LoRa frequency is invalid. |
| 84 | The LoRa data rate (DR) is invalid. |
| 85 | The LoRa frequency and data rate are invalid. |
| 86 | The device hasn’t joined into a LoRa network. |
| 87 | The length of the packet exceeded that maximum allowed by the LoRa protocol. |
| 88 | Service is closed by the server. Due to the limitation of the duty cycle, the server will send the "SRV_MAC_DUTY_CYCLE_REQ" MAC command to close the service. |
| 89 | This is an unsupported region code. |
| 90 | Duty cycle is restricted. Due to the duty cycle, data cannot be sent at this time until the time limit is removed. |
| 91 | No valid LoRa channel could be found. |
| 92 | No available LoRa channel could be found. |
| 93 | Status is error. Generally, the internal state of the protocol stack is wrong. |
| 94 | Time out reached while sending the packet through the LoRa transceiver. |
| 95 | Time out reached while waiting for a packet in the LoRa RX1 window. |
| 96 | Time out reached while waiting for a packet in the LoRa RX2 window. |
| 97 | There is an error while receiving a packet during the LoRa RX1 window. |
| 98 | There is an error while receiving a packet during the LoRa RX2 window. |
| 99 | Failed to join into a LoRa network. |
| 100 | Duplicate downlink message is detected. A message with an invalid downlink count is received. |
| 101 | Payload size is not valid for the current data rate (DR). |
| 102 | Many downlink packets are lost. |
| 103 | Address fail. The address of the received packet does not match the address of the current node. |
| 104 | Invalid MIC is detected in the LoRa message. |
General AT Command
- at+version
This command is used for reading the version number of the current firmware.
| Operation | Command | Response |
|---|---|---|
| Read | at+version | OK <version number> |
Parameter: None
Example:
at+version\r\n
OK V3.2.0.14
- at+help
This command is used to obtain all the AT commands supported by the current firmware.
| Operation | Command | Response |
|---|---|---|
| Read | at+help | OK <all AT commands> |
Parameter: None
Example:
at+help\r\n
OK Device AT commands:
at+version
at+help
at+set_config=device:restart
at+set_config=device:sleep:X
at+get_config=device:status
at+set_config=device:uart:X:Y
at+set_config=device:uart_mode:X:Y
at+send=uart:X:YYY
at+set_config=device:gpio:X:Y
at+get_config=device:gpio:X
at+get_config=device:adc:X
LoRaWAN AT commands:
at+set_config=lora:default_parameters
at+join
at+send=lora:X:YYY
at+set_config=lora:region:XXX
at+get_config=lora:channel
at+set_config=lora:dev_eui:XXXX
at+set_config=lora:app_eui:XXXX
at+set_config=lora:app_key:XXXX
at+set_config=lora:dev_addr:XXXX
at+set_config=lora:apps_key:XXXX
at+set_config=lora:nwks_key:XXXX
at+set_config=lora:multicastenable:X
at+set_config=lora:multicast_dev_addr:XXXX
at+set_config=lora:multicast_apps_key:XXXX
at+set_config=lora:multicast_nwks_key:XXXX
at+set_config=lora:join_mode:X
at+set_config=lora:work_mode:X
at+set_config=lora:ch_mask:X:Y
at+set_config=lora:class:X
at+set_config=lora:confirm:X
at+set_config=lora:dr:X
at+set_config=lora:tx_power:X
at+set_config=lora:adr:X
at+get_config=lora:status
at+set_config=lora:dutycycle_enable:X
at+set_config=lora:send_repeat_cnt:X
LoRaP2P AT commands:
at+set_config=lorap2p:XXX:Y:Z:A:B:C
at+set_config=lorap2p:transfer_mode:X
at+send=lorap2p:XXX
- at+set_config=device:restart
This command is used to restart the device.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=device:restart |
Parameter: None
Example:
at+set_config=device:restart\r\n
UART1 work mode: RUI_UART_NORMAL
Current work_mode:LoRaWAN, join_mode:ABP, Class: A
Initialization OK
-
at+set_config=device:sleep:
<status>
This command is used to change the current state of the device between the sleep and the wake-up mode.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=device:sleep:<status> | OK <STATUS> |
| Parameter | Description |
|---|---|
| status | 0: wake up |
| 1: sleep |
Example
at+set_config=device:sleep:1\r\n
OK Sleep
at+set_config=device:sleep:0\r\n
OK Wake Up
During sleep, Pin 5 (RX1) and Pin 1 (RX2) are automatically configured as wake up pins and in external interrupt mode with an internal pull-down resistor. Wake-up will be triggered by a rising edge on these RX pins.
- at+get_config=device:status
This command is used to obtain the current status of the device.
| Operation | Command | Response |
|---|---|---|
| Read | at+get_config=device:status | OK <information> |
Parameter: None
Example:
at+get_config=device:status\r\n
OK Board Core:RAK4200
MCU:STM32L071KB
LoRa chip:SX1276
Interface Type AT Command
-
at+set_config=device:uart:
<index>:<baud_rate>
This command is used to configure the baud rate for a UART port.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=device:uart:<index>:<baud_rate> | OK |
Parameter:
| index | UART Number (1 or 2) |
| baud_rate | UART Baud rate：1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 |
Example:
at+set_config=device:uart:1:115200\r\n
OK
-
at+set_config=device:uart_mode:
<index>:<mode>
This command is used to set the UART operation from AT configuration mode to data transmission mode.
During data transmission mode, all standard AT Commands will not work and the data that you sent to UART will go directly to the network server as ASCII payload with \r\n. If you input AZ, the network server will receive an uplink hex value of 415A0D0A. This means A=0x41, Z=0x5A, \r=0x0D and \n=0x0A.
To switch back from data transmission mode to configuration mode, use +++ (+++ without \ r\ n).
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=device:uart_mode:<index>:<mode> | OK |
Parameter:
| index | UART Number (1 or 2) |
| mode | UART Mode： Only 1 can be selected, which means the UART is set to data transmission mode. |
Example:
at+set_config=device:uart_mode:1:1\r\n
OK
+++
OK
-
at+send=uart:
<index>:<data>
This command is used to send data over a UART port.
| Operation | Command | Response |
|---|---|---|
| Write | at+send=uart:<index>:<data> | OK |
Parameter:
| index | UART Port Number. Currently, the RAK4200 supports UART1 and UART2. |
| data | The data you want to send. The maximum length of data is 250 characters, equivalent to 255 — the length of at+... — the length of \ r\ n. |
Example:
at+send=uart:1:12345\r\n
OK
-
at+get_config=device:gpio:
<pin_num>
This command is used to obtain the voltage level status of a pin on a module.
| Operation | Command | Response |
|---|---|---|
| Read | at+get_config=device:gpio:<pin_num> | OK <status> |
Parameter:
| pin_num | Pin index of the module (GPIO pins available are Pin 3, Pin 6, Pin 9, and Pin 10) |
| status（Return Value） | 0: Low Voltage Level 1: High Voltage Level |
Figure 7423: GPIO Pinout for RAK4200Example:
at+get_config=device:gpio:3\r\n
OK 1
-
at+set_config=device:gpio:
<pin_num>:<status>
This command is used to set the voltage level state (high or low) of a pin on a module.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=device:gpio:<pin_num>:<status> | OK |
Parameter:
| pin_num | Pin index of the module (GPIO pins available are Pin 3, Pin 6, Pin 9, and Pin 10) Refer to Figure 1. |
| status | 0: Low Voltage Level 1: High Voltage Level |
Example:
at+set_config=device:gpio:3:0\r\n
OK
-
at+get_config=device:adc:
<pin_num>
This command is used to obtain the voltage level of an ADC pin of the module.
| Operation | Command | Response |
|---|---|---|
| Read | at+get_config=device:adc:<pin_num> | OK <voltage> |
Parameter:
| pin_num | ADC pin index of the module (ADC pin is assigned to Pin 3) |
| Voltage (Return Value) | Voltage，Unit: mV |
Figure 7424: ADC Pinout for RAK4200Example:
at+get_config=device:adc:3\r\n
OK 1663mV
LoRaWAN Type AT Command
- at+join
This command is used to join a LoRaWAN network.
| Operation | Command | Response |
|---|---|---|
at+join | OK Join Success |
Parameter: None
Example:
at+join\r\n
OK Join Success
-
at+send=lora:
<port>:<data>
This command is used to send data via LoRaWAN.
| Operation | Command | Response |
|---|---|---|
at+send=lora:<port>:<data> | OK |
Parameter:
| port | Sending port of LoRa. The value range is 1-223. |
| data | The sending data format is in hexadecimal format. The possible values are between 00-FF. The module will internally cast every two characters into a byte before sending it to the LoRa transceiver. The maximum length varies depending on the band frequency and DR (LoRaWAN standard). Refer to Appendix III. |
Example：
When sending data as unconfirmed uplink:
at+send=lora:1:5A00\r\n
OK
When sending data as confirmed uplink:
at+send=lora:1:5A00\r\n
OK
at+recv=0,-105,-12,0
-
When sending a confirmed message, you will receive an ACK response, i.e.
at+recv=.... The0, -105, -12,0stands for:0: For the LoRa port;-105: For the RSSI;-12: For the SNR;0: For the length of the data (no valid data in ACK).
-
When sending an unconfirmed message, sometimes the gateway will send MAC commands to nodes, and the node will also receive
at+recv=....
-
at+set_config=lora:region:
<region>
This command is used to set the appropriate working frequency band.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:region:<region> | OK |
Parameter:
| region | EU433, CN470, IN865, EU868, US915, AU915, KR920, AS923. The default is EU868. |
Example：
at+set_config=lora:region:EU868\r\n
OK
In the AS923 frequency band, the supported frequency plan is "as2" and the dwell time is set to 1.
- at+get_config=lora:channel
This command is used to read all the LoRa channel information given the current region configured on the board.
| Operation | Command | Response |
|---|---|---|
| Read | at+get_config=lora:channel | OK <channel information> |
Parameter: None
Example: EU868 Region
at+get_config=lora:channel\r\n
OK *0,on,868100000,0,5; *1,on,868300000,0,5; *2,on,868500000,0,5; 3,off,0,0,0; 4,off,0,0,0; 5,off,0,0,0; 6,off,0,0,0; 7,off,0,0,0; *8,on,867100000,0,5; *9,on,867300000,0,5; *10,on,867500000,0,5; *11,on,867700000,0,5; *12,on,867900000,0,5; 13,off,0,0,0; 14,off,0,0,0; 15,off,0,0,0
With *0,on,868100000,0,5 as an example，the following is the channel parameter analysis:
*at the beginning, if the channel is open;0is the channel ID;onindicates the current status of the channel;868100000is the actual frequency of the channel，unit is Hz;0,5indicates the DR of the channel, DR0~DR5.
-
at+set_config=lora:ch_mask:
<channel_number>:<status>
This command is used to enable (on) or disable (off) a channel in the current region.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:ch_mask:<channel_number>:<status> | OK |
Parameter:
| channel_number | Channel number |
| status | 0: off 1: on |
Example:
at+set_config=lora:ch_mask:0:0\r\n
OK
-
at+set_config=lora:dev_eui:
<dev_eui>
This command is used to set the Device EUI parameter for the LoRaWAN OTAA mode.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:dev_eui:<dev_eui> | OK |
Parameter:
| dev_eui | Device EUI |
Example：
at+set_config=lora:dev_eui:3530353064377716\r\n
OK
-
at+set_config=lora:app_eui:
<app_eui>
This command is used to set the Application EUI parameter for the LoRaWAN OTAA mode.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:app_eui:<app_eui> | OK |
Parameter:
| app_eui | Application EUI |
All zero value Application EUI at+set_config=lora:app_eui:0000000000000000 is not supported and will return error.
Example：
at+set_config=lora:app_eui:0000000000000001\r\n
OK
-
at+set_config=lora:app_key:
<app_key>
This command is used to set the Application Key parameter for the LoRaWAN OTAA mode.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:app_key:<app_key> | OK |
Parameter:
| app_key | Application Key |
Example:
at+set_config=lora:app_key:841986913ACD00BBC2BE2479D70F3228\r\n
OK
-
at+set_config=lora:dev_addr:
<dev_addr>
This command is used to set the Device Address parameter for the LoRaWAN ABP mode.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:dev_addr:<dev_addr> | OK |
Parameter:
| dev_addr | Device Address |
Example:
at+set_config=lora:dev_addr:260125D7\r\n
OK
-
at+set_config=lora:apps_key:
<apps_key>
This command is used to set the Application Session Key parameter for the LoRaWAN ABP mode.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:apps_key:<apps_key> | OK |
Parameter:
| apps_key | Application Session Key |
Example:
at+set_config=lora:apps_key:841986913ACD00BBC2BE2479D70F3228\r\n
OK
-
at+set_config=lora:nwks_key:
<nwks_key>
This command is used to set the Network Session Key parameter for the LoRaWAN ABP mode.
| Operation | Command | Response |
|---|---|---|
| Read | at+set_config=lora:nwks_key:<nwks_key> | OK |
Parameter:
| nwks_key | Network Session Key |
Example:
at+set_config=lora:nwks_key:69AF20AEA26C01B243945A28C9172B42\r\n
OK
-
at+set_config=lora:multicastenable:
<IsEnable>
This command is used to enable or disable the multicast feature.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:multicastenable:<IsEnable> | OK |
Parameter:
| IsEnable | 0: disable 1: enable The default is disable. |
Example:
at+set_config=lora:multicastenable:1\r\n
OK
-
at+set_config=lora:multicast_dev_addr:
<multicast_dev_addr>
This command is used to set the Device Address for the multicast feature.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:multicast_dev_addr:<multicast_dev_addr> | OK |
Parameter:
| multicast_dev_addr | Multicast Device Address |
Example:
at+set_config=lora:multicast_dev_addr:260111fd\r\n
OK
-
at+set_config=lora:multicast_apps_key:
<multicast_apps_key>
This command is used to set the Application Session Key for the multicast feature.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:multicast_apps_key:<multicast_apps_key> | OK |
Parameter:
| multicast_app_addr | Multicast Application Session Key |
Example:
at+set_config=lora:multicast_apps_key:F13DDFA2619B10411F02F042E1C0F356\r\n
OK
-
at+set_config=lora:multicast_nwks_key:
<multicast_nwks_key>
This command is used to set the Network Session Key for the multicast feature.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:multicast_nwks_key:<multicast_nwks_key> | OK |
Parameter:
| multicast_nwks_key | Multicast Network Session Key |
Example:
at+set_config=lora:multicast_nwks_key:1D1991F5377C675879C39B6908D437A6\r\n
OK
-
at+set_config=lora:join_mode:
<mode>
This command is used to switch the LoRaWAN access mode between the OTAA and the ABP mode.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:join_mode:<mode> | OK |
Parameter:
| mode | Activation mode 0: OTAA 1: ABP The default is OTAA. |
Example：
at+set_config=lora:join_mode:1\r\n
OK
-
at+set_config=lora:class:
<class>
This command is used to set LoRaWAN class to Class A, Class B, or Class C.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:class:<class> | OK |
Parameter:
| class | 0: Class A 1: Class B (Not supported at this time) 2: Class C The default is Class A. |
Example:
at+set_config=lora:class:0\r\n
OK
-
at+set_config=lora:confirm:
<type>
This command is used to set the type of data to be sent: Confirmed/Unconfirmed.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:confirm:<type> | OK |
Parameter:
| type | 0: Unconfirm Type 1: Confirm Type The default is unconfirm type. |
Example:
at+set_config=lora:confirm:0\r\n
OK
-
at+set_config=lora:dr:
<dr>
This command is used to set the data rate (DR) of LoRa.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:dr:<dr> | OK |
Parameter:
| dr | The data rate of LoRa is related to the current region. In most of the LoRa areas, it is common to use 0 to 5. Detailed reference can be made to LoRaWAN 1.0.2 specification. |
-
at+set_config=lora:tx_power:
<tx_power>
This command is used to set the RF transmission power level of the LoRa transceiver.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:tx_power:<tx_power> | OK |
Parameter:
| tx_power | Refer to Appendix II for possible values of tx_power. The table of Appendix II is based on LoRaWAN 1.0.2 specification. LoRa transmit power level varies depending on frequency band. If the resulting TX power is higher than the capability of LoRa Radio, the output power will be based on the max TX power of the LoRa Radio in the module. For RAK4200 module, the max TX power is 20 dBm. Take note of this when using regional bands with MaxEIRP higher than 20 dBm like US915, AU915 and IN865 whose MaxEIRP is 30 dBm. The default setting is 0. |
Example:
at+set_config=lora:tx_power:0\r\n
OK
-
at+set_config=lora:adr:
<status>
This command is used to turn on/off the ADR feature of the LoRa communication.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:adr:<status> | OK |
Parameter:
| status | 0: Turn off 1: Turn on The default is on. |
Example:
at+set_config=lora:adr:0\r\n
OK
- at+get_config=lora:status
This command is used to get all the information related to the current LoRa status, except the channel information.
| Operation | Command | Response |
|---|---|---|
| Read | at+get_config=lora:status | OK <lora status detail> |
Parameter: None
Example:
at+get_config=lora:status\r\n
OK Work Mode: LoRaWAN
Region: EU868
Send_interval: 600s
Auto send status: false.
MulticastEnable: true.
Multi_Dev_Addr: 260111FD
Multi_Apps_Key: F13DDFA2619B10411F02F042E1C0F356
Multi_Nwks_Key: 1D1991F5377C675879C39B6908D437A6
Join_mode: OTAA
DevEui: 0000000000000888
AppEui: 0000000000000888
AppKey: 00000000000008880000000000000888
Class: C
Joined Network:false
IsConfirm: unconfirm
AdrEnable: true
EnableRepeaterSupport: false
RX2_CHANNEL_FREQUENCY: 869525000, RX2_CHANNEL_DR:0
RX_WINDOW_DURATION: 3000ms
RECEIVE_DELAY_1: 1000ms
RECEIVE_DELAY_2: 2000ms
JOIN_ACCEPT_DELAY_1: 5000ms
JOIN_ACCEPT_DELAY_2: 6000ms
Current Datarate: 4
Primeval Datarate: 4
ChannelsTxPower: 0
UpLinkCounter: 0
DownLinkCounter: 0
-
at+set_config=lora:dutycycle_enable:
<status>
This command is used to enable or disable the Duty Cycle feature.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:dutycycle_enable:<status> | OK |
Parameter:
| status | 0: disable 1: enable The default is disable. |
Example:
at+set_config=lora:dutycycle_enable:1\r\n
OK
-
at+set_config=lora:send_repeat_cnt:
<num>
This command is used to set the number of retransmitting attempts on an uplink message. When activated, the board will resend a message if its corresponding ACK (downlink) is not received after sending a confirmed uplink message. The default value is 0, which means that the board will not resend any message by default.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:send_repeat_cnt:<status> | OK |
Parameter:
| num | Number of retries, up to 7. The default is 0. |
Example:
at+set_config=lora:send_repeat_cnt:1\r\n
OK
- at+set_config=lora:default_parameters
This command is used to restore OTAA, ABP, multicast related network access parameters set at the factory, including dev_eui，app_eui, etc.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:default_parameters | OK |
Parameter: none
Example:
at+set_config=lora:default_parameters\r\n
OK
LoRa P2P Type AT Command
-
at+set_config=lora:work_mode:
<mode>
This command is used to switch the LoRa work mode between the LoRaWAN and the LoRa P2P mode. This command will cause the module to restart.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lora:work_mode:<mode> |
Parameter:
| mode | Work Mode of LoRa 0: LoRaWAN 1: LoRa P2P The default is LoRaWAN mode. |
Example:
at+set_config=lora:work_mode:1\r\n
UART1 work mode: RUI_UART_NORMAL
Current work_mode:P2P
Initialization OK
-
at+set_config=lorap2p:
<frequency>:<spreadfact>:<bandwidth>:<codingrate>:<preamlen>:<power>
This command is used to set the relevant parameters of LoRa P2P mode and is only valid when the LoRa mode is switched to LoRa P2P before.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lorap2p:<frequency>:<spreadfact>:<bandwidth>:<codingrate>:<preamlen>:<power> | OK |
Parameter:
| frequency | Frequency, the unit is Hz The default is 869525000 Hz. |
| spreadfact | Spreading factor The default is 12. |
| bandwidth | 0: 125 kHz 1: 250 kHz 2: 500 kHz The default is 0. |
| codingrate | 1: 4/5 2: 4/6 3: 4/7 4: 4/8 The default is 1. |
| preamble | Preamble Length. 5~65535 The default is 8. |
| power | TX power. The unit is in dBm. 5~20 The default is 20. |
Example:
at+set_config=lorap2p:869525000:12:0:1:8:20\r\n
OK
-
at+set_config=lorap2p:transfer_mode:
<mode>
This command is used to switch the state of the LoRa transceiver between sending and receiving state, and it is only valid when the LoRa mode is set to LoRa P2P before.
| Operation | Command | Response |
|---|---|---|
| Write | at+set_config=lorap2p:transfer_mode:<mode> | OK |
Parameter：
| mode | 1: receiver mode 2: sender mode The default is sender mode. |
Example:
at+set_config=lorap2p:transfer_mode:1\r\n
OK
-
at+send=lorap2p:
<data>
This command is used to send data in LoRa P2P mode, and it is only valid when the LoRa mode is set to LoRa P2P before.
| Operation | Command | Response |
|---|---|---|
| Send | at+send=lorap2p:<data> | OK |
Parameter：
| data | The data to be sent, and the format is hexadecimal. |
Example:
at+send=lorap2p:1234\r\n
OK
In LoRa P2P mode, the receiving node receives the data and outputs the data in the following format:
at+recv=<RSSI>,<SNR>,<Data Length>:<Data>
Appendix I: Data Rate by Region
EU868/EU433/AS923| Data Rate | Configuration | Indicative Physical Bit Rate [bit/s] |
|---|---|---|
| 0 | LoRa: SF12 / 125 kHz | 250 |
| 1 | LoRa: SF11 / 125 kHz | 440 |
| 2 | LoRa: SF10 / 125 kHz | 980 |
| 3 | LoRa: SF9 / 125 kHz | 1760 |
| 4 | LoRa: SF8 / 125 kHz | 3125 |
| 5 | LoRa: SF7 / 125 kHz | 5470 |
| 6 | LoRa: SF7 / 250 kHz | 11000 |
| 7 | FSK: 50 kbps | 50000 |
| 8 ~ 15 | RFU |
CN470/KR920
| Data Rate | Configuration | Indicative Physical Bit Rate [bit/s] |
|---|---|---|
| 0 | LoRa: SF12 / 125 kHz | 250 |
| 1 | LoRa: SF11 / 125 kHz | 440 |
| 2 | LoRa: SF10 / 125 kHz | 980 |
| 3 | LoRa: SF9 / 125 kHz | 1760 |
| 4 | LoRa: SF8 / 125 kHz | 3125 |
| 5 | LoRa: SF7 / 125 kHz | 5470 |
| 6 ~ 15 | RFU |
US915
| Data Rate | Configuration | Indicative Physical Bit Rate [bit/s] |
|---|---|---|
| 0 | LoRa: SF10 / 125 kHz | 980 |
| 1 | LoRa: SF9 / 125 kHz | 1760 |
| 2 | LoRa: SF8 / 125 kHz | 3125 |
| 3 | LoRa: SF7 / 125 kHz | 5470 |
| 4 | LoRa: SF8 / 500 kHz | 12500 |
| 5 ~ 7 | RFU | |
| 8 | LoRa: SF12 / 500 kHz | 980 |
| 9 | LoRa: SF11 / 500 kHz | 1760 |
| 10 | LoRa: SF10 / 500 kHz | 3900 |
| 11 | LoRa: SF9 / 500 kHz | 7000 |
| 12 | LoRa: SF8 / 500 kHz | 12500 |
| 13 | LoRa: SF7 / 500 kHz | 21900 |
| 14 ~ 15 | RFU |
AU915
| Data Rate | Configuration | Indicative Physical Bit Rate [bit/s] |
|---|---|---|
| 0 | LoRa: SF12 / 125 kHz | 250 |
| 1 | LoRa: SF11 / 125 kHz | 440 |
| 2 | LoRa: SF10 / 125 kHz | 980 |
| 3 | LoRa: SF9 / 125 kHz | 1760 |
| 4 | LoRa: SF8 / 125 kHz | 3125 |
| 5 | LoRa: SF7 / 125 kHz | 5470 |
| 6 | LoRa: SF8 / 500 kHz | 12500 |
| 7 | RFU | RFU |
| 8 | LoRa: SF12 / 500 kHz | 980 |
| 9 | LoRa: SF11 / 500 kHz | 1760 |
| 10 | LoRa: SF10 / 500 kHz | 3900 |
| 11 | LoRa: SF9 / 500 kHz | 7000 |
| 12 | LoRa: SF8 / 500 kHz | 12500 |
IN865
| Data Rate | Configuration | Indicative Physical Bit Rate [bit/s] |
|---|---|---|
| 0 | LoRa: SF12 / 125 kHz | 250 |
| 1 | LoRa: SF11 / 125 kHz | 440 |
| 2 | LoRa: SF10 / 125 kHz | 980 |
| 3 | LoRa: SF9 / 125 kHz | 1760 |
| 4 | LoRa: SF8 / 125 kHz | 3125 |
| 5 | LoRa: SF7 / 125 kHz | 5470 |
| 6 | RFU | RFU |
| 7 | FSK: 50 kbps | 50000 |
| 8 ~ 15 | RFU | RFU |
Appendix II: TX Power by Region
EU868By default, MaxEIRP is considered to be +16 dBm.
| TXPower | Configuration (EIRP) |
|---|---|
| 0 | MaxEIRP |
| 1 | MaxEIRP - 2 dB |
| 2 | MaxEIRP - 4 dB |
| 3 | MaxEIRP - 6 dB |
| 4 | MaxEIRP - 8 dB |
| 5 | MaxEIRP - 10 dB |
| 6 | MaxEIRP - 12 dB |
| 7 | MaxEIRP - 14 dB |
| 8 ~ 15 | RFU |
US915
By default, MaxEIRP is considered to be +30 dBm based on LoRa Alliance specification. However, the module's max TX power is only up to 20 dBm.
| TXPower | Configuration (Conducted Power) |
|---|---|
| 0 | MaxEIRP |
| 1 | MaxEIRP - 2 dB |
| 2 | MaxEIRP - 4 dB |
| 2 | 26 dBm |
| 3 ~ 9 | - |
| 10 | 10 dBm |
| 11 ~ 15 | RFU |
AU915
By default, MaxEIRP is considered to be +30 dBm based on LoRa Alliance specification. However, the module's max TX power is only up to 20 dBm.
| TXPower | Configuration (EIRP) |
|---|---|
| 0 | MaxEIRP |
| 1 ~ 10 | MaxEIRP - 2*TXPower |
| 11 ~ 15 | RFU |
KR920
By default, MaxEIRP is considered to be +14 dBm.
| TXPower | Configuration (EIRP) |
|---|---|
| 0 | MaxEIRP |
| 1 | MaxEIRP - 2 dB |
| 2 | MaxEIRP - 4 dB |
| 3 | MaxEIRP - 6 dB |
| 4 | MaxEIRP - 8 dB |
| 5 | MaxEIRP - 10 dB |
| 6 | MaxEIRP - 12 dB |
| 7 | MaxEIRP - 14 dB |
| 8 ~ 15 | RFU |
AS923
By default, Max EIRP is considered to be 16 dBm.
| TXPower | Configuration (EIRP) |
|---|---|
| 0 | MaxEIRP |
| 1 | MaxEIRP - 2 dB |
| 2 | MaxEIRP - 4 dB |
| 3 | MaxEIRP - 6 dB |
| 4 | MaxEIRP - 8 dB |
| 5 | MaxEIRP - 10 dB |
| 6 | MaxEIRP - 12 dB |
| 7 | MaxEIRP - 14 dB |
| 8 ~ 15 | RFU |
IN865
By default, MaxEIRP is considered to be +30 dBm based on LoRa Alliance specification. However, the module's max TX power is only up to 20 dBm.
| TXPower | Configuration (EIRP) |
|---|---|
| 0 | MaxEIRP |
| 1 | MaxEIRP - 2 dB |
| 2 | MaxEIRP - 4 dB |
| 3 | MaxEIRP - 6 dB |
| 4 | MaxEIRP - 8 dB |
| 5 | MaxEIRP - 10 dB |
| 6 | MaxEIRP - 12 dB |
| 7 | MaxEIRP - 14 dB |
| 8 | MaxEIRP - 16 dB |
| 9 | MaxEIRP - 18 dB |
| 10 | MaxEIRP - 20 dB |
| 11 ~ 15 | RFU |
CN470
By default, MaxEIRP is considered to be +19.15 dBm.
| TXPower | Configuration (EIRP) |
|---|---|
| 0 | MaxEIRP |
| 1 | MaxEIRP - 2 dB |
| 2 | MaxEIRP - 4 dB |
| 3 | MaxEIRP - 6 dB |
| 4 | MaxEIRP - 8 dB |
| 5 | MaxEIRP - 10 dB |
| 6 | MaxEIRP - 12 dB |
| 7 | MaxEIRP - 14 dB |
| 8 ~ 15 | RFU |
EU433
By default, MAxEIRP is considered to be +12.15 dBm.
| TXPower | Configuration (EIRP) |
|---|---|
| 0 | MaxEIRP |
| 1 | MaxEIRP - 2 dB |
| 2 | MaxEIRP - 4 dB |
| 3 | MaxEIRP - 6 dB |
| 4 | MaxEIRP - 8 dB |
| 5 | MaxEIRP - 10 dB |
| 6 ~ 15 | RFU |
Appendix III: Maximum Transmission Load by Region
The LoRaWAN stack adds 8 bytes to the user payload. In the following list, M is the maximum payload size and N is the maximum usable payload size for the user data without the MAC header.
| DataRate | M | N |
|---|---|---|
| 0 | 59 | 51 |
| 1 | 59 | 51 |
| 2 | 59 | 51 |
| 3 | 123 | 115 |
| 4 | 250 | 242 |
| 5 | 250 | 242 |
| 6 | 250 | 242 |
| 7 | 250 | 242 |
| 8 ~ 15 | Not Defined | Not Defined |
US915
| DataRate | M | N |
|---|---|---|
| 0 | 19 | 11 |
| 1 | 61 | 53 |
| 2 | 133 | 125 |
| 3 | 250 | 242 |
| 4 | 250 | 242 |
| 5 ~ 7 | Not Defined | Not Defined |
| 8 | 61 | 53 |
| 9 | 137 | 129 |
| 10 | 250 | 242 |
| 11 | 250 | 242 |
| 12 | 250 | 242 |
| 13 | 250 | 242 |
| 14 ~ 15 | Not Defined | Not Defined |
AU915
| DataRate | M | N |
|---|---|---|
| 0 | 59 | 51 |
| 1 | 59 | 51 |
| 2 | 59 | 51 |
| 3 | 123 | 115 |
| 4 | 250 | 242 |
| 5 | 250 | 242 |
| 6 | 250 | 242 |
| 7 | Not Defined | Not Defined |
| 8 | 61 | 53 |
| 9 | 137 | 129 |
| 10 | 250 | 242 |
| 11 | 250 | 242 |
| 12 | 250 | 242 |
| 13 | 250 | 242 |
| 14 ~ 15 | Not Defined | Not Defined |
KR920
| DataRate | M | N |
|---|---|---|
| 0 | 59 | 51 |
| 1 | 59 | 51 |
| 2 | 59 | 51 |
| 3 | 123 | 115 |
| 4 | 250 | 242 |
| 5 | 250 | 242 |
| 6 ~ 15 | Not Defined | Not Defined |
| DataRate | Uplink MAC Payload Size (M) | Downlink MAC Payload Size (M) | ||
|---|---|---|---|---|
| UplinkDwellTime = 0 | UplinkDwellTime = 1 | DownlinkDwellTime = 0 | DownlinkDwellTime = 1 | |
| 0 | 59 | N/A | 59 | N/A |
| 1 | 59 | N/A | 59 | N/A |
| 2 | 59 | 19 | 59 | 19 |
| 3 | 123 | 61 | 123 | 61 |
| 4 | 250 | 133 | 250 | 133 |
| 5 | 250 | 250 | 250 | 250 |
| 6 | 250 | 250 | 250 | 250 |
| 7 | 250 | 250 | 250 | 250 |
| 8 ~ 15 | RFU | RFU | ||
IN865
| DataRate | M | N |
|---|---|---|
| 0 | 59 | 51 |
| 1 | 59 | 51 |
| 2 | 59 | 51 |
| 3 | 123 | 115 |
| 4 | 250 | 242 |
| 5 | 250 | 242 |
| 6 | 250 | 242 |
| 7 | 250 | 242 |
| 8 ~ 15 | Not Defined | Not Defined |
CN470
| DataRate | M | N |
|---|---|---|
| 0 | 59 | 51 |
| 1 | 59 | 51 |
| 2 | 59 | 51 |
| 3 | 123 | 115 |
| 4 | 250 | 242 |
| 5 | 250 | 242 |
| 6 ~ 15 | Not Defined | Not Defined |
EU433
| DataRate | M | N |
|---|---|---|
| 0 | 59 | 51 |
| 1 | 59 | 51 |
| 2 | 59 | 51 |
| 3 | 123 | 115 |
| 4 | 250 | 242 |
| 5 | 250 | 242 |
| 6 | 250 | 242 |
| 7 | 250 | 242 |
| 8 ~ 15 | Not Defined | Not Defined |
Appendix IV: Pin Description of RAK4200
The pin definition of the RAK4200 module can be reviewed in the Pin Definition section of the Datasheet.
Listed are the summary of the pins of the RAK4200 module:
-
About the UART Pin:
- Pin 4 (TX1) and Pin 5 (RX1) are reserved for UART1.
- Pin 2 (TX2) and Pin 1 (RX2) are reserved for UART2.
- During sleep, Pin 5 (RX1) and Pin 1 (RX2) are automatically configured as wake up pins and in external interrupt mode with an internal pull-down resistor. Wake-up will be triggered by a rising edge on these RX pins.
-
About the SWD Debug Pin: Pin 7 (SWDIO) and Pin 8 (SWCLK) are used for SWD debug port.
-
About the Power Pin: The power pins on the RAK4200 module include VCC on Pin 20 and GND on Pin 11, Pin 13, Pin 14, and Pin 19.
-
About the Reset Pin: The reset pin on the RAK4200 module is Pin 18.
-
About the RF Antenna Pin: The RF antenna pin on the RAK4200 module is the Pin 12.
-
About the ADC Pin: The ADC pin on the RAK4200 is assigned to Pin 3.
-
About the GPIO pin: The GPIO pins available on the RAK4200 module are Pin 3, Pin 6, Pin 9, and Pin 10.
