UM1547 datasheet(38/51 Pages) STMICROELECTRONICS

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FW configuration variables

UM1547

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DocID023232 Rev 5

Var12

AutoSniff

False

This enables the sniff feature when the link is

inactive automatically.

Var13

AutoSniffTimeout

The inactivity timeout in seconds used for

AutoSniff above.

Var14

AutoSniffInterval

1000

Sniff Slot interval applied AutoSniff: from 200 to

10,000 are allowed. 0.625 ms per slot.

Var15

HostShallowSleepEnable True

Enables shallow sleep mode.

Var16

HostDeepSleepEnable

False

Enables deep sleep mode

Var17

GPIO_HostKeepAwake

None

GPIO register used to prevent the module from

entering deep sleep mode. A setting of none

means that this function is disabled. Typically

GPIO 3 & 5 support this feature.

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. Typically

GPIO 3 & 5 support this feature.

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. Not supported

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 40

slots. A slot period 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: 115,200; 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

Table 11. AT2 FW version 1.3 system configuration settings - version 1.5 (continued)

Variable

Name

Default

Description

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