want nrf24l01 communication with nrf51822

[pallavi]

hello,will you please tell me which code i have to use in the sdk 12.2.0 for rf communication with nrf51822 and nrf24l01 .and also tell me which settings i have to do for nrf24l01 side as a transmitter.so that i can receive data on nrf51822 side.

[ovrebekk]

Hi Pallavi

The ESB library in the nRF5 SDK v12.2.0 is designed to be backwards compatible with the nRF24L01/nRF24L01+, assuming you don't use the L01 device in legacy Shockburst mode (ACK's disabled).

On the nRF5 side you can use the esb_ptx and esb_prx examples as a starting point: \nRF5_SDK_12.2.0\examples\proprietary_rf\

For this to work you need the following settings on the nRF24L01 side:
Default address (0xE7E7E7E7E7), with 5 byte address length
16-bit CRC
2Mbps bitrate
Auto ACK and dynamic payload length enabled

For all other settings you can use the default values.

Edit: Added attachment.

Best regards
Torbjørn

[pallavi]

Hello sir,

Print details for the following Receiver Code :

    #include <SPI.h>
    #include "printf.h"

    #include <nRF24L01.h>
    #include <RF24.h>
#define CE 18
#define CSN 19
RF24 radio(CE, CSN);
unsigned char values;
const byte rxAddr[5] = {0xC0,0x01,0x23,0x45,0x67};

void setup()
{
  Serial.begin(9600);
  printf_begin();
  radio.begin();
  radio.setPALevel(RF24_PA_MAX);
  radio.setDataRate(RF24_1MBPS);
  radio.setChannel(7);
  radio.openReadingPipe(0, rxAddr);
  radio.startListening();
}

void loop()
{
  if (radio.available())
  {
    char text;
    radio.read(&text, 1);
    Serial.print("####### Data Received :");
    Serial.print(text);
    Serial.println(" #######");
    radio.printDetails() ;
  }
}

Receiver Prints:

####### Data Received :A #######
STATUS		 = 0x0e RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=7 TX_FULL=0
RX_ADDR_P0-1	 = 0x67452301c0 0xc2c2c2c2c2
RX_ADDR_P2-5	 = 0xc3 0xc4 0xc5 0xc6
TX_ADDR		 = 0xe7e7e7e7e7
RX_PW_P0-6	 = 0x01 0x00 0x00 0x00 0x00 0x00
EN_AA		 = 0x3f
EN_RXADDR	 = 0x03
RF_CH		 = 0x07
RF_SETUP	 = 0x07
CONFIG		 = 0x0f
DYNPD/FEATURE	 = 0x00 0x00
Data Rate	 = 1MBPS
Model		 = nRF24L01+
CRC Length	 = 16 bits
PA Power	 = PA_MAX
####### Data Received :A #######
STATUS		 = 0x0e RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=7 TX_FULL=0
RX_ADDR_P0-1	 = 0x67452301c0 0xc2c2c2c2c2
RX_ADDR_P2-5	 = 0xc3 0xc4 0xc5 0xc6
TX_ADDR		 = 0xe7e7e7e7e7
RX_PW_P0-6	 = 0x01 0x00 0x00 0x00 0x00 0x00
EN_AA		 = 0x3f
EN_RXADDR	 = 0x03
RF_CH		 = 0x07
RF_SETUP	 = 0x07
CONFIG		 = 0x0f
DYNPD/FEATURE	 = 0x00 0x00
Data Rate	 = 1MBPS
Model		 = nRF24L01+
CRC Length	 = 16 bits
PA Power	 = PA_MAX

Transmitter Code:

 #include <SPI.h>
    #include "printf.h"

    #include <nRF24L01.h>
    #include <RF24.h>
    #define CE 18
    #define CSN 19
    RF24 radio(CE, CSN);
    char values;
    const byte rxAddr[5] = {0xC0,0x01,0x23,0x45,0x67};

    void setup()
    {
      Serial.begin(9600);
      printf_begin();
      radio.begin();
      radio.setPALevel(RF24_PA_MAX);
      radio.setDataRate(RF24_1MBPS);
      radio.setChannel(7);
      radio.openWritingPipe(rxAddr);
      radio.stopListening();

    }

void loop()
{
  values = 'A';
         radio.write(&values,1);
         Serial.print("####### Data Transmitted :");
    Serial.print(values);
    Serial.println(" #######");
         radio.printDetails() ;
         delay(2000);
      }

Transmitter Prints:

####### Data Transmitted :A #######
STATUS		 = 0x0e RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=7 TX_FULL=0
RX_ADDR_P0-1	 = 0x67452301c0 0xc2c2c2c2c2
RX_ADDR_P2-5	 = 0xc3 0xc4 0xc5 0xc6
TX_ADDR		 = 0x67452301c0
RX_PW_P0-6	 = 0x01 0x00 0x00 0x00 0x00 0x00
EN_AA		 = 0x3f
EN_RXADDR	 = 0x03
RF_CH		 = 0x07
RF_SETUP	 = 0x07
CONFIG		 = 0x0e
DYNPD/FEATURE	 = 0x00 0x00
Data Rate	 = 1MBPS
Model		 = nRF24L01+
CRC Length	 = 16 bits
PA Power	 = PA_MAX
####### Data Transmitted :A #######
STATUS		 = 0x0e RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=7 TX_FULL=0
RX_ADDR_P0-1	 = 0x67452301c0 0xc2c2c2c2c2
RX_ADDR_P2-5	 = 0xc3 0xc4 0xc5 0xc6
TX_ADDR		 = 0x67452301c0
RX_PW_P0-6	 = 0x01 0x00 0x00 0x00 0x00 0x00
EN_AA		 = 0x3f
EN_RXADDR	 = 0x03
RF_CH		 = 0x07
RF_SETUP	 = 0x07
CONFIG		 = 0x0e
DYNPD/FEATURE	 = 0x00 0x00
Data Rate	 = 1MBPS
Model		 = nRF24L01+
CRC Length	 = 16 bits
PA Power	 = PA_MAX

Hope this will help, sir please help i am unable to communicate with nrf51 for along.

Thanks and Regards Pallavi