How to set TX power in zigbee mode

RE: How to set TX power in zigbee mode

LangSQ — Fri, 29 Jan 2021 08:07:29 GMT

Hi,

I set the TX power value before the zboss stack start. And I test in endpoint sensor with nRF52840, the TX power value will be rewritten to 8dBm automatically when zboss stack start, before this is 0dBm. Thanks for your help, have a nice day.

Thanks.

RE: How to set TX power in zigbee mode

Edvin — Fri, 29 Jan 2021 07:36:23 GMT

So you set it to -4 before you start the zboss stack, right? I believe it is automatically overridden when you start broadcasting by the Zigbee stack. Try setting the TX power after you have joined the network.

BR,
Edvin

RE: How to set TX power in zigbee mode

LangSQ — Fri, 29 Jan 2021 03:38:39 GMT

Hello,

According to your advice, periodically logging the register value in main function by timer, when the zigbee useing radio, the register value changing from 0x00000000 to 0x00000008, it means ok,but I tried other cases, a new questions is:

If I set -4 or others(just not 8) for TX power, when the zigbee starts, the register value keep in 0x00000008, whether in searching devices or in transmiting data, it's abnormal.

Thanks.

RE: How to set TX power in zigbee mode

Edvin — Mon, 25 Jan 2021 13:36:13 GMT

Hello,

[quote user=""]So, why my settings is not effect,but the nrf_802154_tx_power_get() returns is right?[/quote]

That depends on when you read out the radio's TX power register when you read it directly like this.

I am quite sure that the radio TX power register is not updated before the zigbee library, zboss, intends to use the radio the next time. Try to print the radio TX power register either on a button press, or set up a timer to print it every second or something to see that the radio TX power register will update eventually.

Best regards,

Edvin