User's Manual

7.4 Modiﬁcation of volatile parameters

This group contains all functions that will modify RuntimeSettings while the module is run-

ning. These settings are volatile and will be reset to their defaults (see chapter

) on a reset

of the module or when waking up after a shut down command.

7.4.1 CMD_SET_PAPOWER_REQ

This command is used to set the radio TX-power. Unlike the UserSettings parameter

RADIO_DefaultRfTXPower

, this is a volatile runtime parameter, but it’s power value is used in

the same way. Thus, see section

8.2.3

for more information.

The parameter must be chosen with prudence to reach good functionality and

compliance with valid regulatory requirements as for example the EN 300 220

in the European Union or the FCC in the United States of America.

The power value is entered in the complement on two format.

Format:

Start signal Command Length Power CS

0x02 0x11 0x01 1 Byte 1 Byte

Response (

CMD_SET_PAPOWER_CNF

Start signal Command | 0x40 Length Conﬁgured power CS

0x02 0x51 0x01 1 Byte 1 Byte

7.4.1.1 Example

Setting the power to +14 dBm:

Start signal Command Length Conﬁgured power CS

0x02 0x11 0x01 0x0E 0x1C

Response:

Start signal Command | 0x40 Length Conﬁgured power CS

0x02 0x51 0x01 0x0E 0x5C

7.4.2 CMD_SET_CHANNEL_REQ

This command is used to select the radio channel. Unlike the UserSettings parameter

RADIO_DefaultRfChannel

, this is a volatile runtime parameter.