UM1865 datasheet(122/132 Pages) STMICROELECTRONICS

122 / 132 page

Vendor specific commands

UM1865

122/132

DocID027514 Rev 1

The controller will generate a command complete event.

4.7.8

Set_Tx_power_level

Description:

This command sets the TX power level of the BlueNRG-MS. By controlling the

EN_HIGH_POWER and the PA_LEVEL, the combination of the 2 determines the output

power level (dBm). See the table below.

When the system starts up or reboots, the default TX power level will be used, which is the

maximum value of 8 dBm. Once this command is given, the output power will be changed

instantly, regardless if there is Bluetooth communication going on or not. For example, for

debugging purpose, the BlueNRG-MS can be set to advertise all the time. And use this

command to observe the signal strength changing.

The system will keep the last received TX power level from the command, i.e. the 2nd

command overwrites the previous TX power level. The new TX power level remains until

another Set TX Power command, or the system reboots.

Table 284. Set_Tx_power_level

Command name

Parameters

Return

Set_Tx_power_level (0xFC0F)

EN_HIGH_POWER

PA_LEVEL

Status

Table 285. Set_Tx_power_level command parameters

Parameter

Size

Description

EN_HIGH_POWER 1 byte

Can be only 0 or 1. Set high power bit on or off.

PA_LEVEL

1 byte

Can be from 0 to 7. Set the PA level value.

Table 286. Tx_power_level command parameters combination

EN_HIGH_POWER

PA_LEVEL

TX Power Level (dBm)

-18

-14.7

-11.4

-8.1

-4.9

-1.6

1.7

5.0

-15

-11.7

-8.4

UM1865 데이터시트(PDF) 122 Page - STMicroelectronics

UM1865 데이터시트(HTML) 122 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

데이터시트 다운로드

링크 URL