Can I use an esp32 as an nrfl01?

Using Arduino Project Guidance
1

I recently bought an esp32 display thingy and a couple nrf24l01s. I am planning the use the esp and nrf as a remote for a project I am making. My question is if it would be possible to not have to use a separate module connected to the esp and have it act like it has a built in nrfl01. Since the esp and nrf both work in the 2.4ghz frequency range I was thinking this might be possible.

If you have any ideas let me know, thanks.

2

Ehh... What would that be?

While waiting for more precise replies, read the datasheets, application notes and eventual examples. It looks like thinkable to me but I have no close knowledge.

3

You can attach a NRF24L01+ to an ESP32 without problems.
You can not emulate a NRF24L01+ with only on chip resources.

5

Its an esp32 TTGO T display I think.
I will have a look at the datasheets

6

Is it an ESP with a display shield or only a general display?

7

What is your software skill level? You would have to write an entire NRFL01 protocol stack and low level drivers for the ESP transceiver hardware.

8

I definitely don’t have the skills to do that. And if it takes that much work I think I will stick to the normal way of using them.

9

If it helps, here is a tested example of a RF24 module connected to an ESP32 DevKit board. It is a slave (receiver) only, but could be the basis for a master (transmitter) as well.

// SimpleRx - the slave or the receiver

//name >> rf24 pin >> ESP32 pin
//MOSI     6            23
//MISO     7            19
//SCK      5            18
//Vcc      2            3.3V 
//                      10uF electrolytic cap between Vcc and GND on the module
//GND      1            GND  

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>

#define CE_PIN   22  // rf24 pin 3
#define CSN_PIN 21   // rf24 pin 4

const byte thisSlaveAddress[5] = {'R','x','A','A','A'};

RF24 radio(CE_PIN, CSN_PIN);

char dataReceived[14]; // this must match dataToSend in the TX
bool newData = false;

//===========

void setup() {

    Serial.begin(115200);

    Serial.println("SimpleRx Starting");
    radio.begin();
    radio.setDataRate( RF24_250KBPS );
    radio.openReadingPipe(1, thisSlaveAddress);
    radio.startListening();
}

//=============

void loop() {
    getData();
    showData();
}

//==============

void getData() {
    if ( radio.available() ) {
        radio.read( &dataReceived, sizeof(dataReceived) );
        newData = true;
    }
}

void showData() {
    if (newData == true) {
        Serial.print("Data received ");
        Serial.println(dataReceived);
        newData = false;
    }
}

Uses code from Robin2's simple rf24 tutorial.

10

You might consider an ESP to ESP wifi connection instead.

11

Like with ESP-NOW?

12

Right on.

13

I did experiment with ESP-NOW using Robin2's ESP-NOW tutorial. The tutorial provides some example code.

14

These ESP-NOW tutorials for the ESP32 are clear and well done.

15

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