EVM-900-DT Ver la hoja de datos (PDF) - Unspecified
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EVM-900-DT Datasheet PDF : 38 Pages
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Write Digital Output Value - Command Code = 28
This command sets the digital output value on a specific GPIO line.
Write Digital Outputs Command and Response
Command
Start Command Param 1 Param 2 Param 3 End
3C
28
00
GPIO
DOVal
3E
Response
Start Response Param 1
End
3C
28
Status
3E
Figure 31: Write Digital Outputs Value Command and Response
Parameter 1 is set to 0x00 and Parameter 2 is the GPIO number that is
being written. Parameter 3 sets the output state (High = 01; Low = 00). The
configuration made in volatile memory overwrites the configuration read
from the non-volatile memory until a power reset.
The GPIO to be written must be configured as a digital output before the
value can be written.
The response parameter indicates if the command was successful (00) or if
there was an error (01).
Read Channel Number - Command Code = 29
This command reads the module’s current channel number.
Read Channel Number Command and Response
Command
Start Command End
3C
29
3E
Response
Start Response Param 1
End
3C
29
Chan
3E
Figure 32: Read Channel Number Command and Response
The channel number in the response ranges from 00 to 03. This value is
stored in non-volatile memory.
– 34 –
Read TX Power Level - Command Code = 2B
This command reads the current TX output power level from RAM.
Read TX Power Level Command and Response
Command
Start Command End
3C
2B
3E
Response
Start Response Param 1
End
3C
2B
TXPower
3E
Figure 33: Read TX Power Level Command and Response
The TX output power levels are shown in Figure 26. This command reads
the TX output power level setting stored in volatile memory, which may be
different from that stored in non-volatile memory.
Write TX Power Level - Command Code = 2C
This command sets the TX output power level in volatile memory.
Write TX Power Level Command and Response
Command
Start Command Param 1
End
3C
2C
TXPower
3E
Response
Start Response Param 1
End
3C
2C
Status
3E
Figure 34: Write TX Power Level Command and Response
The TX output power levels are shown in Figure 26. This command writes
the TX output power level stored in volatile memory, which may be different
from what is in non-volatile memory. This change is lost on a power cycle.
The response parameter indicates if the command was successful (00) or if
there was an error (01).
– 35 –
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