ESB 2.4GHz

[wzszzxj]

HI，ALL：

       How to setup TX mode  in example PRX，and so,how to setup Rx mode in PTX example.   I  use  esb_init()  of example PTX in example PRX， But when I fill data in fifo, it can't trigger NRF_ESB_EVENT_TX_SUCCESS.

[Håkon Alseth]

Hi,

 

Is both PRX and PTX setup with dynamic payload enabled? This is required for the ACK payload feature to be available. (.protocol member in the init function set to "NRF_ESB_PROTOCOL_ESB_DPL")

In order for a PRX device to send a ACK payload, it first has to receive a payload from a PTX device.

Do you get the NRF_ESB_EVENT_RX_RECEIVED event on your PRX device?

 

Kind regards,

Håkon

[wzszzxj]

HI，Alseth:

    Thank you for your replay! In the ESB liberary,how many channels would there be?and what is frequency deviation?

[wzszzxj]

HI，Alseth:

     That is example esb-ptx.Every channel,every version's SDK----SDK15,SDK16,SDK17,will be like that.and no about spectrum Analyzer's setting,just like follow two waveform picture,it was taken in esb_ptx example,but the source code for simple frequency picture is only  annotating the statement"NRF_RADIO->SHORTS   = m_radio_shorts_common | RADIO_SHORTS_DISABLED_RXEN_Msk;" in document nrf_esb.c,here is the two pictures in the same spectrum analyzer setting(and They are in the same channel 3):

[Håkon Alseth]

Could you enable max hold on the spectrum?

 

Kind regards,

Håkon

[wzszzxj]

Hi，Alseth:

    The two picture is just to make a comparision.Could last picture means that is only a carrier waveform?And the first picture could mean that it is a payload waveform?

[Håkon Alseth]

The first one, with the several smaller spikes, is modulated carrier (ie. a carrier with actual payload data), while the "cleaner" one is a pure sine wave (unmodulated carrier).

 

If you enable max hold on your spectrum analyzer, you should see a more rounded form on the modulated signal as well.

 

Kind regards,

Håkon

[wzszzxj]

Hi,Alseth:

  Thank you for your reply, Pls close this topic,thank you!