Datasheet

single BLE packet ('F' for

force

packet). This command will accept a maximum of 20 characters, which is the limit of

what can be send in a single packet.

Codebase Revision: 0.7.6

Parameters: See AT+BLEUARTTX

Output: See AT+BLEUARTTX

AT+BLEUARTRX

This command will dump the UART service (https://adafru.it/iCn)'s RX buffer to the display if any data has been received

from from the UART service while running in Command Mode. The data will be removed from the buffer once it is

displayed using this command.

Any characters left in the buffer when switching back to Data Mode will cause the buffered characters to be displayed

as soon as the mode switch is complete (within the limits of available buffer space, which is 1024 bytes on current black

32KB SRAM devices, or 160 bytes for the blue first generation BLEFriend board based on 16KB SRAM parts).

Codebase Revision: 0.3.0

Parameters: None

Output: The RX buffer's content if any data is available, otherwise nothing.

# Command results when data is available

AT+BLEUARTRX

Sent from Android

# Command results when no data is available

AT+BLEUARTRX

AT+BLEUARTFIFO

This command will return the free space available in the BLE UART TX and RX FIFOs. If you are transmitting large

chunks of data, you may want to check if you have enough free space in the TX FIFO before sending, keeping in mind

that individual GATT packets can contain up to 20 user bytes each.

Codebase Revision: 0.6.7

Parameters: Running this command with no parameters will return two comma-separated values indicating the free

space in the TX buffer, following by the RX buffer. To request a specific buffer, you can execute the command with

either a "TX" or "RX" value (For example: "AT+BLEUARTFIFO=TX").

Output: The free space remaining in the TX and RX FIFO buffer if no parameter is present, otherwise the free space

remaining in the specified FIFO buffer.

You can also use the AT+BLEUARTFIFO=RX command to check if any incoming data is available or not.

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