[N32WB031-STB Development Board Review] 2-Bluetooth Transmission Test
N32WB031-STB V1.0 Bluetooth transparent transmission
Development board: N32WB031-STB V1.0
Development environment: MDK
Mobile Bluetooth APP
MDK version: 5.36
Peripheral resources: The chip has built-in Bluetooth function
- N32WB031 Bluetooth Introduction
N32WB031 adopts 32-bit ARM Cortex-M0 core, with the highest working frequency of 64MHz, supports BLE 5.1, transmit current 4.2mA, receive current 3.8mA, maximum transmit power +6dBm, receive sensitivity -96dBm 1Mbps, supports SIG Mesh, and can be both a master device and a slave device.
- Test software environment construction
Bluetooth low-level development is somewhat difficult for beginners, especially stack operations. Here we directly use the N32WB031 routines, download the N32WB031 development environment integrated package N32WB03x_V1.3.0.zip and unzip it.
Download address: ftp://download.nationstech.com
1. Open the Bluetooth software RDTSS
Open the process file in the ..\Software Development Kit\N32WB03x_SDK_V1.3\projects\n32wb03x_EVAL\ble\rdtss\MDK-ARM directory, compile, download, and run. At this time, the LED2 of the N32WB031-STB development board is off, indicating that it is not connected to the mobile phone APP, as shown in Figure 1.
Figure 1 Bluetooth disconnected state
2. Open the Bluetooth test software on your phone
Select a mobile Bluetooth test software APP, download and install it, open the installed APP, scan and connect the Bluetooth named NS_RDTSS, then the LED2 of the N32WB031-STB development board is on, see Figure 2
Figure 2 Bluetooth connection successful
- Transparent transmission test
- Serial port sends data to mobile phone
First, click NS_RDTSS in the APP to connect to the development board Bluetooth. Then click 0e8ac72e002 under Unknown Server's characteristics. Follow steps 1 and 2, as shown in Figure 3. Open the serial port software, connect to UART, and enter the information. In this case, it is "Welcome to National Technology N32WB031-STB". Click Send, as shown in Figure 4. The mobile phone receives the information, as shown in 3 in Figure 3.
Figure 3 APP settings
Figure 4 Serial communication software settings
- The mobile phone sends data to the serial port
First, click NS_RDTSS in the APP to connect to the Bluetooth of the development board. Then click 0e8ac72e001 under Unknown Server's characteristics. Follow steps 1 and 2 to enter the information. In this case, it is "N32WB031". Click Send, as shown in Figure 5. The serial port software receives the information, as shown in Figure 6.
Figure 5 APP segment operation steps
Figure 4 Information received by the serial communication software
From the above examples, we can see that the National Technology's "N32WB031-STB Development Board" can easily realize Bluetooth data transparent transmission. On this basis, the sending and receiving data modules can be modified, and low-code writing can be applied to user programs, with high development efficiency.
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