2.4G Data transmission between NRF24LU1+ and NRF52832

[?????]

I want to get 32000 bytes per second with NRF24LU1+ ,as my audio sampling rate is 16K and sampling bits is 16.But actually I have lost one packet or more per 10ms.data loss.png.

Some codes is shown below:
NRF24LU1+:

hal_nrf_set_rf_channel(0x32);
hal_nrf_set_datarate(HAL_NRF_2MBPS);	  
hal_nrf_set_crc_mode(HAL_NRF_CRC_16BIT);  // CRC:16bits	
hal_nrf_set_address(HAL_NRF_PIPE0,RX_ADDRESS);
hal_nrf_open_pipe(HAL_NRF_PIPE0,true);

// Configure radio as primary receiver (PRX)
hal_nrf_set_operation_mode(HAL_NRF_PRX);

// Set payload width to 1 bytes
hal_nrf_set_rx_payload_width((int)HAL_NRF_PIPE0, 32);

// Power up radio
hal_nrf_set_power_mode(HAL_NRF_PWR_UP);

NRF52832:

nrf_esb_config_t nrf_esb_config         = NRF_ESB_DEFAULT_CONFIG;
nrf_esb_config.payload_length           = 32;						
nrf_esb_config.protocol                 = NRF_ESB_PROTOCOL_ESB;//_DPL;	
nrf_esb_config.bitrate                  = RADIO_MODE_MODE_Nrf_2Mbit; 		
nrf_esb_config.mode                     = NRF_ESB_MODE_PTX;            
nrf_esb_config.event_handler            = nrf_esb_event_handler;      
nrf_esb_config.selective_auto_ack       = false;
nrf_esb_config.retransmit_count=1;
nrf_esb_config.retransmit_delay=0;
		
err_code = nrf_esb_init(&nrf_esb_config);
VERIFY_SUCCESS(err_code); 
err_code = nrf_esb_set_base_address_0(base_addr_0);
VERIFY_SUCCESS(err_code);

err_code = nrf_esb_set_base_address_1(base_addr_1);
VERIFY_SUCCESS(err_code);

err_code = nrf_esb_set_prefixes(addr_prefix, 8);

MAIN.C:

for(num=0;num<100;num++)
{															      
  for(num1=0;num1<16;)
  {																																	
    tx_payload.data[2*num1]=0;
    tx_payload.data[2*num1+1]=0;																	
    num1=num1+1;															
    tx_payload.noack = false;															
    nrf_esb_write_payload(&tx_payload);															
    nrf_delay_us(800);															
  }
}

Could you give me some advice?

[ovrebekk]

Hi

It's not uncommon to see some packet loss when running a wireless link, especially when you don't use the retransmit feature.

Have you quantified approximately how many percent of the packets are lost?

What is the range between the PTX and PRX during your testing?

Are you using standard development kits, or custom hardware?

Best regards
Torbjørn

[?????]

The retransmit feature may be the reason, I will test it later. Thank you fo yor help!

[ovrebekk]

No problem, just let me know if you have more questions :)