NRF52 ESB RX-TX

RE: NRF52 ESB RX-TX

Hung Bui — Tue, 21 Mar 2017 09:47:53 GMT

@amigo: You have another case here you mentioned that it worked for you. Could you confirm the issue is fixed ?

For your setup I would suggest you configure the server as PRX and clients as PTXs. Instead of server initially send to client commands , you can use it the reversed way, the client sends packets to ping the server periodically and if the server has a command to send to the client, the server can send the command as ACK payload. This way the server always PRX and the client is always PTX. This make it easier to implement and most power efficient as only the server stay in RX mode.

You can do what you are doing, meaning all will stay mainly in PRX mode, all the time, and this will cause lots of power consumption.

RE: NRF52 ESB RX-TX

Hung Bui — Tue, 21 Mar 2017 09:03:59 GMT

@Amigo : Please edit your question and add your explanation or code in. What you wrote here is not an answer for your question. You can either comment or edit question to add information. please remove this answer after you have done.

RE: NRF52 ESB RX-TX

Amigo — Mon, 20 Mar 2017 17:16:48 GMT

@Hung Bui:

i'm using NRF24l01 with stm32 as server. nrf52-dk board with some sensors as a client. Server send to a client (clients) request packet (any user protocol). Client (nrf52) cheks an itsef's address, command and execute required functions. Then client sends data back to master (NRF24L01). Server uses ADDRESS_P0[] = {0xE7, 0xE7, 0xE7, 0xE7, 0xE7}; pipe. Client may use one of other pipes adresses.

NRF24 configuration: 2Mbps, auto ACK, 2byte CRC

void Radio_Config(void) 
{
  Radio_Write_Reg(STATUS, NOP);
  Radio_Write_Reg(CONFIG, 0x00);
  
  NRF_CSN_LO();
  SPI_rw(FLUSH_RX);
  NRF_CSN_HI();

  NRF_CSN_LO();
  SPI_rw(FLUSH_TX);
  NRF_CSN_HI();
  
  //RF settings 0 dBm, 2 Mbps, LNA Set up
  Radio_Write_Reg(RF_SETUP, 0x0F);
  //Channel settings - #4 0 to 125  
  Radio_Write_Reg(RF_CH, NRF_CHANNEL);
  //ACK settings - with ACK
  Radio_Write_Reg(EN_AA, 0xFF);
  //1000 us retransmission up to 2 times
  Radio_Write_Reg(SETUP_RETR, 0x50);

 //32 byte fifo
  Radio_Write_Reg(RX_PW_P0, NRF_BUFF_SIZE);
  Radio_Write_Reg(RX_PW_P1, NRF_BUFF_SIZE);
  
  //for RX_MODE
  //enable Pipe0, Pipe1
  Radio_Write_Reg(EN_RXADDR, 0x03);
  
  Radio_WrRXAddr(RX_ADDR_P0, ADDRESS_P0, 5);
  Radio_WrRXAddr(RX_ADDR_P1, ADDRESS_P1, 5);
  Radio_WrRXAddr(RX_ADDR_P2, ADDRESS_P2, 5);
  Radio_WrRXAddr(RX_ADDR_P3, ADDRESS_P3, 5);
  Radio_WrRXAddr(RX_ADDR_P4, ADDRESS_P4, 5);
  Radio_WrRXAddr(RX_ADDR_P5, ADDRESS_P5, 5);
  
//for TX_MODE		
  //Radio_WrTXAddr(ADDRESS_P0, 5);
  Radio_WrTXAddr(ADDRESS_P1, 5);
}

RE: NRF52 ESB RX-TX

Hung Bui — Mon, 20 Mar 2017 15:17:56 GMT

@Amigo: Please describe your set-up more clearly. When you switch nRF52 with RX and TX mode, which device will act as peer device ? How would they sync ?

RE: NRF52 ESB RX-TX

Amigo — Fri, 17 Mar 2017 16:38:30 GMT

My 2nd device is nrf24l01 was set up with auto ack with retransmition (1000 us up to 2 times). It works well with nrf52 only in TX mode or in Rx mode separatly. but i need nrf52 to start to works in rx mode. By request nrf52 has to answer on request, that means nrf52 runs in tx mode. then it turns back in RX mode.

RE: NRF52 ESB RX-TX

Jørgen Kvalvaag — Fri, 17 Mar 2017 14:29:57 GMT

TX error means that the packet was not ACKed by the receiver. If you don't have a receiver/RX set up you will get TX failed event for every payload you send.