BM70 Compact Demo Board User's Guide: Appendix G. Transparent UART
G.1 Introduction
The Transparent UART Service is instantiated as a Primary Service. The service UUID of the Transparent UART Service is set to 49535343-FE7D-4AE5-8FA9-9FAFD205E455. The Transparent UART Service contains the following data characteristics:
- Transparent UART Transmit (TX) Characteristic.
- Transparent UART Receive (RX) Characteristic.
The Transparent UART TX Characteristic is used for data transmission by the server or the client. Once the Client Characteristic Configuration Descriptor (CCCD) of the Transparent UART TX Characteristic is enabled, the server sends data to the client using the Notify property. The client can also send data to the server using the Write/Write Without Response properties.
The Transparent UART RX Characteristic is used for data transmission by the client. The client can send data to the server using the Write/Write Without Response properties.
The UUIDs and the properties of the data characteristics are captured in Table G-1.
TABLE G-1: CHARACTERISTIC PROPERTIES
| Characteristic Name | UUID | Properties |
|---|---|---|
| Transparent UART TX | 49535343-1E4D-4BD9-BA61-23C647249616 | Notify, Write, Write without response |
| Transparent UART RX | 49535343-8841-43F4-A8D4-ECBE34729BB3 | Write, Write without response |