UM1865 datasheet(123/132 Pages) STMICROELECTRONICS

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UM1865

Vendor specific commands

132

Event(s) generated:

The controller will generate a command complete event.

4.7.9

Device_Standby

Description:

Normally the BlueNRG-MS will automatically enter sleep mode to save power. This

Device_Standby command further put the device into the Standby mode instead of the sleep

mode. The difference is that, in sleep mode, the device can still wake up itself with the

internal timer. But in standby mode, this timer is also disabled. So the only possibility to

wake up the device is by the external signals, e.g. a HCI command sent via SPI bus.

Based on the measurement, the current consumption under sleep mode is ~2 uA. And this

value is ~1.5 uA in standby mode.

The command is only accepted when there is no other Bluetooth activity. Otherwise an error

code “command disallowed” will return.

Event(s) generated:

The controller will generate a command complete event.

-5.1

-2.1

1.4

4.7

8.0 (default)

Table 287. Set_Tx_power_level return parameters

Parameter

Size

Description

Status

1 byte

0x00: BLE_STATUS_SUCCESS

0x12: ERR_INVALID_HCI_CMD_PARAMS

Table 286. Tx_power_level command parameters combination (continued)

EN_HIGH_POWER

PA_LEVEL

TX Power Level (dBm)

Table 288. Device_Standby

Command name

Parameters

Return

Device_Standby(0xFC13)

Status

Table 289. Device_Standby return parameters

Parameter

Size

Description

Status

1 byte

0x00: BLE_STATUS_SUCCESS

0x0C: ERR_COMMAND_DISALLOWED

This command is not allowed when Bluetooth activity is ongoing

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