WI.232FHSS-25-R datasheet(37/67 Pages) RADIOMETRIX

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WI.232FHSS-25-R/ WI.232FHSS-250-R DATASHEET

Revision 1.1.0

Troubleshooting Hint: Baud Rate Problems. If you lose track of the baud rate setting of the module, it will

be impossible to program the module. You can either try every possible baud rate to discover the setting,

or force a power-on reset with CMD held low to set the baud rate to its default: 2.4kbit/second.

4.1.5. Network Mode (regNETWORKMODE)

regNVNETMODE (0x04)

regNETMODE (0x4F)

R/W

N/A

RA0

EP0

NM2

NM1

NM0

Default Network Mode: MAC Mode

The module supports three distinct networking modes, MAC, USER, and Extended USER, configured

through bits NM0 – NM2. For each of these modes, assured delivery (acknowledgement) can be either

enabled or disabled. For more information, see Addressing Modes section of this manual. Valid settings

are listed in the table below.

Wi.232FHSS-250-R version 1.1.0 and greater firmware support an additional flag, EP0 (force extended

preamble). This flag forces the module to send an extended preamble on every RF transmission. An

extended preamble is of a length that allows modules that have just awakened or have not yet

synchronized to find and temporarily synchronize with the transmitting module. This can be useful in

systems that require the endpoints to spend most of their time sleeping. Endpoints can awaken, receive

an application-defined message from the master transmitter, and go back to sleep. This message could

contain scheduling information as to when to wake again for a full bi-directional communications session.

It is important to note that extended preamble RF packets are not necessarily RF synchronizing packets.

Upon completing the reception of an extended preamble RF packet that is not a synchronizer, the receiving

module will lose its temporary synchronization and begin looking for another extended

preamble/synchronizer on another channel.

Network Mode

Meaning

0x04

MAC Address Mode

0x05

Reserved

0x06

User Address Mode

0x07

User Extended Address Mode

0x14

MAC Address Mode with Acknowledgement

0x15

Reserved

0x16

MAC Address Mode with Acknowledgement

0x17

User Extended Address Mode with Acknowledgement

Table 13, Network Mode Register Settings

All other network modes are reserved and may cause undesired operation.

Troubleshooting Hint: If you are unable to communicate with another module, it is most likely one of

following problems. First, check to make sure that you are using the same data rate. Modules

programmed to different data rates will not communicate nor share the RF channel with one another.

Second, ensure that your network mode and addressing is configured to properly access the module of

interest. Also, ensure that you are addressing a specific module when using acknowledgment. Failure to

do so will cause large delays and loss of data.

WI.232FHSS-25-R Datasheet(PDF) 37 Page - Radiometrix Ltd

WI.232FHSS-25-R Datasheet(HTML) 37 Page - Radiometrix Ltd

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