HELP WITH WIRING nRF24L01 with esp32s2/LOLIN S2

Projects General Guidance
1

I need help with wiring the CE and the CSN from the nRF to which pin on the LOLIN S2.

nRF24L01. / ESP32/ LOLIN S2
MISO. / MISO 37
MOSI / MOSI 35
GND. / GND
VCC. / VCC
SCK. / SCK 36
CE. / ?
CSN ?

I HAVE ATTACHED THE PICTURES OF THE TWO BOARDS

Screenshot 2024-03-21 at 12.29.58
Screenshot 2024-03-21 at 12.29.581728×1088 116 KB

Screenshot 2024-03-21 at 12.32.33
Screenshot 2024-03-21 at 12.32.33788×564 122 KB

2

Your other topic on the same subject deleted.

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Thank you.

3

on an ESP32 I used the following

// ESP32 connections
// ESP32 SCK pin GPIO18 goes to NRF24L10_pin SCK
// ESP32 MISO pin GPIO19 goes to NRF24L10_pin MI
// ESP32 MOSI pin GPIO23 goes to NRF24L10_pin MO
// NRF24L10 CE to ESP32 pin GPIO4
// NRF24L10 CSN to ESP32 pin GPIO 5

using the Radiohead RF24 library with the initialisation

RF24 radio(4, 5);  //CE and CSN

your ESP32S2 could use the standard SPI pins and GPIO4

// ESP32S2 connections
// ESP32S2 SCK pin GPIO36 goes to NRF24L10_pin SCK
// ESP32S2 MISO pin GPIO37 goes to NRF24L10_pin MI
// ESP32S2 MOSI pin GPIO35 goes to NRF24L10_pin MO
// NRF24L10 CE to ESP32S2 pin GPIO4
// NRF24L10 CSN to ESP3S2 pin GPIO 34

and the RF24 initialisation

RF24 radio(4, 34);  //CE and CSN

power the NRF24L01 from 3.3V and GND with a 10uF capacitor

4

This is the receiver code

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

RF24 radio(9, 10); // CE, CSN

const byte address[6] = "00001";

void setup() {
  Serial.begin(115200);
  radio.begin();
  radio.openReadingPipe(0, address);
  radio.setPALevel(RF24_PA_MIN);
  radio.startListening();
}

void loop() {
  if (radio.available()) {
    char text[32] = "";
    radio.read(&text, sizeof(text));
    Serial.println(text);
  }
}

this is the transmitter code

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

RF24 radio(9, 10); // CE, CSN

const byte address[6] = "00001";

void setup() {
  radio.begin();
  radio.openWritingPipe(address);
  radio.setPALevel(RF24_PA_MIN);
  radio.stopListening();
}

void loop() {
  const char text[] = "Hello World";
  radio.write(&text, sizeof(text));
  delay(1000);
}
5

You've failed to state what the problem is.

6

Threads merged.

7

does it work? if not what happens?
what microcontrollers are you using as hosts?
how are the NRF24L01s connected and powered?