Writing fixed variables using nRF52820 BLE

Hello.

I want to write 3 bytes of data using BLE in a memory area that will not disappear when the nRF52820 is powered off or reset.

Currently, when I create a program, I set a fixed variable to write to the nRF52820, and to change this variable, I connect a debugger with SWD to change it.

Is it possible to change this fixed variable using only BLE, without using SWD?

SDK17.1

S140

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0 user73165 over 4 years ago

Hi there,

Yes, it's possible to do this. Typically you would make a BLE service that has an attribute that can be written to. For example an variable that can be updated by the central by writing to the service. This would require you to create a custom service. Luckily, we already have a guide on how to make a custom service here. Variables can be saved to non-volatile memory by using the Flash data storage module. You can use the flash data storage example for reference on how to use the module.

regards

Jared
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0 user73165 over 4 years ago

Hi there,

Yes, it's possible to do this. Typically you would make a BLE service that has an attribute that can be written to. For example an variable that can be updated by the central by writing to the service. This would require you to create a custom service. Luckily, we already have a guide on how to make a custom service here. Variables can be saved to non-volatile memory by using the Flash data storage module. You can use the flash data storage example for reference on how to use the module.

regards

Jared
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