Linx Technologies TRM-915-DTS - Manual (Page 15)

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CSMA Enable - Address = 0x56; NV Address = 0x0B
Carrier-Sense Multiple Access (CSMA) is a best-effort delivery system that
listens to the channel before transmitting a message. If another module is
already transmitting when a message is queued, the module waits before
sending its payload. This helps to eliminate RF message corruption at the
expense of additional latency. Setting this register to 0x01 enables CSMA
and 0x00 disables CSMA. By default, CSMA is enabled. Figure 31 shows
examples of the commands and Figure 32 shows the available values. UART Minimum Transmission Unit - Addr = 0x54; NV Addr = 0x09
This register determines the UART buffer level that triggers the transmission
of a packet. The minimum value is decimal 1 and the maximum value is
144. The default value for this register is 64, which provides a good mix of
throughput and latency. Figure 28 shows examples of the commands.
Verbose Mode - NV Address = 0x0A
Setting this register to 0x00 suppresses the start-up message, including
firmware version, which is sent to the UART when the module is reset. A
value of 0x01 causes the message to be output after reset. By default,
the module start-up message is output. Figure 29 shows examples of the
commands and Figure 30 shows the available values.
Figure 28: UART MTU Command and Response
UART MTU
Read Command Read Response
Header Size Escape Address ACK Address Value
0xFF 0x02 0xFE
0x54
0x09
0x06
0x54
0x09
V1
Write Command
Header Size Address Value
0xFF 0x02
0x54
0x09
V1
Figure 29: Verbose Mode Command and Response
Verbose Mode
Read Command Read Response
Header Size Escape Address ACK Address Value
0xFF 0x02 0xFE 0x0A 0x06 0x0A V1
Write Command
Header Size Address Value
0xFF 0x02 0x0A V1
Verbose Mode Register Settings
V1 Mode
0x00 Disable the start-up message
0x01 Enable the start-up message
Figure 30: Verbose Mode Register Settings
Figure 31: CSMA Enable Command and Response
CSMA Enable Register Settings
V1 Mode
0x00 Disable CSMA
0x01 Enable CSMA
Figure 32: CSMA Enable Register Settings
CSMA Enable
Read Command Read Response
Header Size Escape Address ACK Address Value
0xFF 0x02 0xFE
0x54
0x09
0x06
0x54
0x09
V1
Write Command
Header Size Address Value
0xFF 0x02
0x54
0x09
V1