BLE Periodic Advertisement Example

Source code path: example/ble/periodic_adv

Supported Platforms

This example demonstrates the usage of periodic advertisement.

Periodic advertisement starts after boot, refer to the implementation of ble_app_peri_advertising_start(). The default periodic advertisement content is 80 bytes of all-zero data.
Use finsh command “cmd_diss keep_per start [change_period] [len]” to change the periodic advertisement content. The change_period value range is 20-255 in milliseconds; len value range is 0-100 in bytes.
1. After starting, the periodic advertisement will update content according to the set change period. The content consists of repeated digits of the specified length, and this digit increments with each periodic update, cycling between 0-255.
2. Use finsh command “cmd_diss keep_per stop” to stop updating the periodic advertisement content. Note that this command only stops updating the content but does not stop the periodic advertisement.
Use finsh commands “cmd_diss adv_start” and “cmd_diss adv_stop” to enable and stop periodic advertisement.

Before running this example, prepare:

Enable Bluetooth (BLUETOOTH):
- Path: Sifli middleware → Bluetooth
- Enable: Enable bluetooth
  - Macro switch: CONFIG_BLUETOOTH
  - Description: Enables Bluetooth functionality
Enable NVDS:
- Path: Sifli middleware → Bluetooth → Bluetooth service → Common service
- Enable: Enable NVDS synchronous
  - Macro switch: CONFIG_BSP_BLE_NVDS_SYNC
  - Description: Bluetooth NVDS synchronization. When Bluetooth is configured to HCPU, BLE NVDS can be accessed synchronously, so enable this option; when Bluetooth is configured to LCPU, this option needs to be disabled.

Switch to the example project directory and run the scons command to compile:

> scons --board=eh-lb525 -j32

Switch to the example project/build_xx directory and run uart_download.bat, then select the port as prompted to download:

$ ./uart_download.bat

     Uart Download

please input the serial port num:5

For detailed compilation and download steps, please refer to the Quick Start Guide.

After the example starts: