1 ASCII Command Interface
The RNBD451 module is primarily controlled through ASCII commands sent from the host MCU to the UART interface. These ASCII commands enable the management of various functions, including but not limited to connection setup/teardown, accessing Generic Attribute Profile (GATT) characteristics, modifying configuration settings, reading status and querying status information.
The UART interface on the module can operate in two modes:
- Command mode – Configured to receive and process ASCII commands from the host MCU
- Data mode – Facilitates the exchange of data using the “Transparent UART” Bluetooth service