OpenThread set txpower, defaults

[ChrisRu]

Hi,

I successful developed a application using nrf / zephyr SDK and install the applications
on the nrf52840dk and dongle.
Now I want to adjust the power using 

CONFIG_BT_CTLR_TX_PWR_PLUS_3=y

But when I check the power setting in the netshell / shell with

ot txpower

I always receive 0dbm.

set the power - ot txpower 3 works.

Where is my missing link?

Chris

[Marjeris Romero]

Hi,

For thread you should call function otPlatRadioSetTransmitPower() in the code if you want to set the output power.

The CONFIG_BT_CTRL_TX_PWR_PLUS_3 is only for Bluetooth and applies for the Zephyr BLE controller. This sample application demonstrate how to set dynamic TX power for BT and how to go about this.

Best regards,

Marjeris

[ChrisRu]

Hi Marjeris

Thanks for the hint.

I implement it in the callback registered for otThreadStateChanged where I have the context pointer and
can retrieve the instance.

static void update_txpower(struct openthread_context *context)
{
  int8_t power;
  if (otPlatRadioGetTransmitPower(context->instance,&power)==OT_ERROR_NONE)
  {
      if (power!=3) {
          power=3;
          if (otPlatRadioSetTransmitPower(context->instance,power)!=OT_ERROR_NONE)
              LOG_ERR("Radio SetTransmitPower failed");
      }
  }
  else {
    LOG_ERR("Radio GetTransmitPower failed");
  }
}