**SOLVED ESP32-S3-Wroom1 and NRF24L01+ NOT WORKING

cherrymlt · July 20, 2024, 1:21pm

Hey guys, student here that needs help with ESP32-S3-Wroom1 Clone to connect with NRF24L01+ module.
I connected as follows:
SCK -> GPIO 12 (pin 11)
MISO -> GPIO 13 (pin 12)
MOSI -> GPIO 11 (pin 10)
CE -> GPIO 10 (pin 9)
CSN -> GPIO 9 (pin 46)
I've already checked that everything is connected well and I lowered the SPI Mhz to 1Mhz from 10Mhz.
The NRF24l01+ Module is powered separately through a 5V source on the break-out board (It is safe for 5V with regulator).
**Attached to this post is the result of printDetails command.
Code ran:

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#define VSPI 3
const int VSPI_MISO = 13;  // MISO D
const int VSPI_MOSI = 11;  //MOSI Q
const int VSPI_SCLK = 12;  //CLK
const int VSPI_SS = 9;    //CSN
SPIClass vspi = SPIClass(VSPI);
RF24 radio(10, 9);  // CE, CSN
const byte address[6] = "00001";
void setup() {
vspi.begin(VSPI_SCLK, VSPI_MISO, VSPI_MOSI, VSPI_SS);
radio.begin();
radio.setAutoAck(false);
radio.setDataRate(RF24_250KBPS);
radio.openReadingPipe(0, address);
radio.setPALevel(RF24_PA_MIN);
radio.startListening();
Serial.begin(9600);
}
void loop() {
if (radio.available()) {
char text[32] = "";
radio.read(&text, sizeof(text));
Serial.println(text);
Serial.println("available");
}
if (radio.isChipConnected()) {
Serial.println("Transmitter NF24 connected to SPI");
} else {
Serial.println("\n\nNF24 is NOT connected to SPI");
}
radio.printDetails();
delay(1000);
}

Capture

horace · July 20, 2024, 3:23pm

for an ESP32 the initialization I use is (assuming using VSPI)

// 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

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

#define CE_PIN 4
#define CSN_PIN 5

RF24 radio(CE_PIN, CSN_PIN);

void setup() {
  Serial.begin(115200);
  delay(1000);
  Serial.println("ESP32 > NRF24L01 Receive text");
  radio.begin();
  if (radio.isChipConnected())
    Serial.println("Receiver NF24 connected to SPI");
  else {
    Serial.println("NF24 is NOT connected to SPI");
    while (1)
      ;
  }

for an ESP32-S3 your pin definitions in post 1 look OK

cherrymlt · July 20, 2024, 6:41pm

For some reason i Still get "NF24 is NOT connected to SPI"
newer code:

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#include <printf.h>
#define VSPI 3
#define CE_PIN 4
#define CSN_PIN 5
#define VSPI_MISO 19
#define VSPI_MOSI 23
#define VSPI_SCLK 18
SPIClass vspi = SPIClass(VSPI);
const byte thisSlaveAddress[5] = { 'R', 'x', 'A', 'A', 'A' };

RF24 radio(CE_PIN, CSN_PIN);

char dataReceived[10];  // this must match dataToSend in the TX
bool newData = false;


void setup() {
  Serial.begin(115200);
  vspi.begin(VSPI_SCLK, VSPI_MISO, VSPI_MOSI, CSN_PIN);
  radio.begin();
  radio.setAutoAck(false);
  radio.setDataRate( RF24_250KBPS );
  radio.openReadingPipe(0, thisSlaveAddress);
  radio.setPALevel(RF24_PA_MIN);
  radio.startListening();
  radio.printDetails();
}

void loop() {
  if (radio.available()) {
    char text[32] = "";
    radio.read(&text, sizeof(text));
    Serial.println(text);
    Serial.println("available");
  }
  if (radio.isChipConnected()) {
    Serial.println("Transmitter NF24 connected to SPI");
  } else {
    Serial.println("\n\nNF24 is NOT connected to SPI");
  }
  radio.printDetails();
  delay(3000);
}

Results:

horace · July 20, 2024, 7:26pm

Using a ESP32-S3-DevKitC-1 I run the following code

//  ESP32 > NRF24L01 receiver test using a text string

// ESP32_S3_DevKit_1 connections
// ESP32_S3 SCK pin GPIO12  to NRF24L10_pin SCK
// ESP32_S3 MISO pin GPIO13  to NRF24L10_pin MISO
// ESP32_S3 MOSI pin GPIO11  to NRF24L10_pin MOSI
// ESP32_S3 SS  pin GPIO 10   to NRF24L10 SS
// ESP32_S3 pin GPIO16   to NRF24L10 CE
// ESP32_S3 pin GPIO17 to NRF24L10 DCSN

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

#define CE_PIN 16
#define CSN_PIN 17

bool radioNumber = 1;
const uint8_t pipes[][6] = { "1Node", "2Node" };

RF24 radio(CE_PIN, CSN_PIN);

char dataReceived[10];  // this must match dataToSend in the TX
bool newData = false;

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

void setup() {
  Serial.begin(115200);
  delay(1000);
  Serial.println("ESP32_S3 > NRF24L01 Receive text");
  radio.begin();
  if (radio.isChipConnected())
    Serial.println("Receiver NF24 connected to SPI");
  else {
    Serial.println("NF24 is NOT connected to SPI");
    while (1)
      ;
  }
  radio.setChannel(125);
  radio.setDataRate(RF24_1MBPS);
  //radio.setDataRate(RF24_250KBPS);
  radio.printDetails();
  if (!radioNumber) {
    radio.openWritingPipe(pipes[0]);
    radio.openReadingPipe(1, pipes[1]);
  } else {
    radio.openWritingPipe(pipes[1]);
    radio.openReadingPipe(1, pipes[0]);
  }
  radio.startListening();
  // radio.setPayloadSize(sizeof(Struct1));
}

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

void loop() {
  if (radio.available()) {
    char testString[10] = "";
    radio.read(testString, sizeof(testString));
    Serial.print("Test string:      ");
    Serial.println(testString);
  }
}

the serial monitor displays

ESP32_S3 > NRF24L01 Receive text
Receiver NF24 connected to SPI
SPI Speedz	= 10 Mhz
STATUS		= 0x0e RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=7 TX_FULL=0
RX_ADDR_P0-1	= 0x65646f4e32 0x65646f4e31
RX_ADDR_P2-5	= 0xc3 0xc4 0xc5 0xc6
TX_ADDR		= 0x65646f4e32
RX_PW_P0-6	= 0x20 0x20 0x20 0x20 0x20 0x20
EN_AA		= 0x3f
EN_RXADDR	= 0x03
RF_CH		= 0x7d
RF_SETUP	= 0x07
CONFIG		= 0x0e
DYNPD/FEATURE	= 0x00 0x00
Data Rate	= 1 MBPS
Model		= nRF24L01+
CRC Length	= 16 bits
PA Power	= PA_MAX
ARC		= 0

cherrymlt · July 20, 2024, 8:13pm

I am not able to achieve such results.
May you please send me a Pinout connection for NRF24L01+ with ESP32-S3-DevKitC-1 OR ESP32 Dev Module (I tried Both and still no progression).
Also an Rx Code and Tx Code, something simple like to produce a hello world.. I've yet to manage. Thank you in advance.

EDIT:
my Arduino Interface is 2.3.2 and the RF24 Lib I'm using is 1.4.9, Could this be the issue?
So far Everything has been "NF24 is NOT connected to SPI"

horace · July 20, 2024, 8:28pm

the NRF24L01 pinout I used was (view from top of PCB)

the ESP32-S3-DevKitC-1

and the connections

// ESP32_S3_DevKit_1 connections
// ESP32_S3 SCK pin GPIO12  to NRF24L10_pin SCK
// ESP32_S3 MISO pin GPIO13  to NRF24L10_pin MISO
// ESP32_S3 MOSI pin GPIO11  to NRF24L10_pin MOSI
// ESP32_S3 SS  pin GPIO 10   to NRF24L10 SS
// ESP32_S3 pin GPIO16   to NRF24L10 CE
// ESP32_S3 pin GPIO17 to NRF24L10 DCSN

photo

cherrymlt · July 20, 2024, 10:01pm

Thank you for your guidance It helped a lot.
The biggest problem was the NRF24L01 Break-out board, it required a 10uF Electrolytic Capacitor from the + to - of it as the Vdrop was too high.

andre0808 · July 21, 2024, 8:17pm

I dont understand, does this board come with an onboard wifi or nrf module?

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**SOLVED ESP32-S3-Wroom1 and NRF24L01+ NOT WORKING

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