UM1547 datasheet(36/51 Pages) STMICROELECTRONICS

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FW configuration variables

UM1547

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DocID023232 Rev 5

Var18

GPIO_HostWakeup

None

GPIO register used to wake up the module after

it enters deep sleep mode. A setting of none

means that this function is disabled.

Var19

UseSmallPackets

False

If true, only DM1, DH1, DM3, DH3 packets are

allowed on a link. EDR is disabled.

Var20

EnableAFH

True

Enable/Disable the Adaptive Frequency

Hopping mode.

Var21

EnablePowerControl

True

Enable/Disable the Bluetooth Dynamic power

control feature.

Var22

HostFlowControl

Reserved for future usage.

Var23

ATReply

AT-AB

Sets the AT command reply prefix. All events

that are displayed are prefixed by this character

string (case sensitive).

Var24

QoS_Latency

Sets the Quality of Service Latency from 3 to 20

slots. A slot size is 625 microseconds.

Var25

CpuMHz

Sets the module’s CPU speed: 2, 4, 8, 12, 16,

20, 24, 28, 32, 36 and 64 MHz are allowed.

(Note: CpuMHz: 40 to 63 are not supported.)

Var26

HciBaudrate

921600

Baud rate of the HCI interface to the Bluetooth

controller: 230,400; 460,800; 921,600; and

2,000,000 baud are allowed.

Var27

SPIEnable

False

Enables the SPI interface to external pins.

Var28

SPIMode

Slave

Mode of the SPI.

Var29

I2CEnable

False

Enables the I2C interface to external pins.

(Note: not supported)

Var30

COD

240404

Bluetooth Class of Device.

Var32

HostEvents

True

All host events are sent when true.

Var33

BondingAllowed

True

Automatically allow bonding by default when

true.

Var34

PageScan

True

Enables page scan when true, or halts page

scan when false.

Var35

InquiryScan

True

Enables inquiry scan when true, or halts inquiry

scan when false.

Var36

MPMode

0 = point-to-point, 1 = multipoint using packet

protocol, 2 = broadcast.

Var37

UseExtLPO

False

True when a 32.768 kHz low power oscillator is

present, and false if not present.

Var38

HSE_MHz

MHz rating of the main crystal oscillator

(Read-only)

Var39

EnableEncryption

True

Set to true to enable the Bluetooth link

encryption

Table 10. AT2 version 1.3 - system configuration settings – version 1.4 (continued)

Variable

Name

Default

Description

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