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,

My intention is to run a simple transmitter and receiver between NRF51822 and Arduino Uno +NRF24L01.

Please see below working code for a Transmitter and Receiver both using Arduino Uno + NRF24L01 Library for NRF24L01 (http://tmrh20.github.io/RF24/)

Pin Configuration: NRF24 Arduino 1 GND GND 2 VCC VCC 3 CE Analog 4 4 CSN Analog 5 5 SCK digIO 13 6 MOSI digIO 11 7 MISO digIO 12

Transmitter Code with its Configurations

    #include <SPI.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);
      radio.begin();
      radio.setPALevel(RF24_PA_MAX);
      radio.setDataRate(RF24_1MBPS);
      radio.setChannel(7);
      radio.openWritingPipe(rxAddr);
      radio.stopListening();
    
    }

void loop()
{
         values = 0x10;
         radio.write(&values,1);
         delay(2000);
      //  Serial.print(value);  //prints the character just read
 }

Receiver Code with its Configurations

#include <SPI.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);
  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(text);
  }
}

Please suggest whats should i do with respect to NRF51822 to work with these transmitter and receiver code respectively. We have been discussing all for so long but haven't come to a conclusion. So can you help me in code with simple configuration mentioned in the code above and run transmitter and receiver successfully.

Regards Pallavi