This example shows how to use the BLE-Central function of RAK4600.
This example is developed on the basis of standard firmware. The added code is in the comment range of /* User code */ and / *End User code */ of "user_app.c".
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In this example, auxiliary test modules were used as Bluetooth devices.
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The RAK4600 can automatically scan the Bluetooth devices and only support the devices which are connected to the Nordic UART Service.
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The RAK4600 can send the "PING" string to the auxiliary test modules and print their return messages.
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Note that RAK4600 can only be connected with one auxiliary measurement module at the same time, vice versa.
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The sample code is set print logs every 3 seconds, and will disconnect automatically after printing the logs 15 times and then reconnects again.
User can modify the time interval depending on the requirement.
Example:
uint32_t timer_interval = 5; //prints logs every 5 seconds