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Nexto Logger

Nexto Series

NL717

CE117100 Rev. B

8. FSB8

ADAPTATIVE_DATA_RATE: The Data Rate parameter of LoRa communication indicates the bandwidth at which the

message will be sent. The higher the Data Rate, the greater the capacity for sending data, i.e. more data can be sent

in a single message. Conversely, the higher the Data Rate, the less effective the communication over long distances,

signiﬁcantly decreasing the communication distance. When the ADAPTATIVE_DATA_RATE mode is activated, the

server takes care of choosing the ideal Data Rate for device communication, this adaptation process is time consuming

and can cause a lot of communication instability, with few real gains associated with it. It is recommended to disable

this function, so the device will communicate at the lowest Data Rate, but having a signiﬁcant gain in communication

distance.

ACT_TYPE: Mode in which the device will be joined on the server. The ﬁrst join mode, OTAA, allows the device to

exchange access and encryption keys with the server during the join process. In this way the encryption keys are hidden

and secure during the entire process, this is the most secure mode of join. In the second join mode, ABP, the access and

encryption keys are pre-generated and loaded on the device before the join process. This mode offers a faster and easier

join process but is less secure, since the encryption keys can be misappropriated.

Conﬁguration options:

1. OTAA

2. ABP

ABP_KEYS: Receives a structure of type LORA_ABP_CONFIGURATION that must be ﬁlled in if the choice of join

mode is of type ABP.

• LORA_ABP_CONFIGURATION: Different from the others, which list available options, this is a data structure

that contains the three keys needed for the join of ABP type.

1. ABP_APP_SESSION_KEY: Receives the pointer of a vector that contains the saved key;

2. ABP_NWK_SESSION_KEY: Receives the pointer of a vector that contains the saved key;

3. ABP_DEV_ADDR: Receives the pointer of a vector that contains the saved key.

Figure 12: LORA_ABP_CONFIGURATION

OTAA_KEYS: Receives a structure of type LORA_OTAA_CONFIGURATION that must be ﬁlled in if the choice of

join mode is of type OTAA.

• LORA_OTAA_CONFIGURATION: Data structure that contains the two keys needed for the join of OTAA type.

1. OTAA_APP_EUI: Receives the pointer of a vector that contains the saved key;

2. OTAA_APP_KEY: Receives the pointer of a vector that contains the saved key.

Figure 13: LORA_OTAA_CONFIGURATION

ALTUS Nexto Series Manual

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