how to set up NRF52810 constant carrier

[antony.sun]

I have tried a lot of different settings but the NRF52810 still does not output carrier..

How do I configure the radio to only send carrier for NRF52810? 

[Andreas]

Hi,

 

1. Start HFXO: 

   NRF_CLOCK->TASKS_HFCLKSTART = 1;

2. Wait for HFXO to start:  

   // Wait for the external oscillator to start up.
   while (NRF_CLOCK->EVENTS_HFCLKSTARTED == 0)
   {
       // Do nothing.
   }

3. (Optional) Set frequency: 

   NRF_RADIO->FREQUENCY = x;

4. (Optional) Set output power: 

   NRF_RADIO->TXPOWER = y;

5. Start the radio: 

   NRF_RADIO->TASKS_TXEN = 1;

 

You can also use the radio test example in our nRF5 SDK.

 

Best regards,

Andreas

[antony.sun]

thanks a lot.

I use the same code to try.

but the device still do not send the carrier.

is the 52810 different from others config?

[Andreas]

Hi,

 

Try this hex: unmod_2402.hex

It runs

int main(void)
{
    NRF_CLOCK->TASKS_HFCLKSTART=1;

    while (NRF_CLOCK->EVENTS_HFCLKSTARTED == 0)
    {
        // Do nothing.
    }

    NRF_RADIO->TASKS_TXEN=1;

    while (true)
    {
        __WFE();
    }
}

 

I just verified it on a nRF52810 on my side, check 2402 MHz.

 

There is not any differences in configuration between nRF52810 compared to other nRF52 devices, but you need to build a compatible project (e.g. PCA10040e projects in nRF5 SDK).

 

Best regards,

Andreas