7.5.5.2.4 Data Transfer

After establishing the connection, both the peripheral and central devices are allowed to transfer data. This data communication happens OTA using the transparent UART service.

Data Sent from the Central Device (Mobile) to the Peripheral Device (RNBD451) Module

The central device sends data ‘0’ to the RNBD451 module. The Opcode ATT_WRITE_CMD frame represents the data. The user can see the data value under the “Decode” section. The data shown is the corresponding hex value. This packet is grouped under the ATT tab.
Figure 7-48. Wireless Protocol Suite Application Packet View Data Transfer

Data Sent from the Peripheral Device (RNBD451) Module to the Central Device (Mobile)

The RNBD451 module sends data ‘1’ to the central device. The Opcode ATT_HANDLE_VALUE_NTF frame represents the data. The user can see the data value under the “Decode” section. The data shown is the corresponding hex value. This packet is grouped under the ATT tab.
Figure 7-49. Wireless Protocol Suite Application Packet View Data Transfer