Datasheet

BLE Services

The following commands allow you to interact with various GATT services present on Bluefruit LE modules when

running in Command Mode.

AT+BLEUARTTX

This command will transmit the specified text message out via the UART Service (https://adafru.it/iCn) while you are

running in Command Mode.

Codebase Revision: 0.3.0

Parameters: The message payload to transmit. The payload can be up to 240 characters (since AT command strings

are limited to a maximum of 256 bytes total).

Output: This command will produce an ERROR message if you are not connected to a central device, or if the internal

TX FIFO on the Bluefruit LE module is full.

As of firmware release 0.6.2 and higher, AT+BLEUARTTX can accept a limited set of escape code sequences:

\r = carriage return

\n = new line

\t = tab

\b = backspace

\\ = backward slash

As of firmware release 0.6.7 and higher, AT+BLEUARTTX can accept the following escape code sequence since

AT+BLEUARTTX=? has a specific meaning to the AT parser:

\? = transmits a single question mark

As of firmware release 0.7.6 and higher, AT+BLEUARTTX can accept the following escape code sequence:

\+ = transmit a single '+' character without having to worry about `+++` mode switch combinations

# Send a string when connected to another device

AT+BLEUARTTX=THIS IS A TEST

# Send a string when not connected

AT+BLEUARTTX=THIS IS A TEST

ERROR

ESCAPE SEQUENCE NOTE: If you are trying to send escape sequences in code via something like

'ble.print("...");' please note that you will need to send a double back-slash for the escape code to arrive as-

intended in the AT command. For example: ble.println("AT+BLEUARTTX=Some Test\\r\\n");

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You must be connected to another device for this command to execute

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