Hi.
I am battling to get the ESP32 C3 SuperMini to talk to the NRF24L01 board.
Trying to use the ESP as a NRF => wifi bridge.
There are no real examples for this board and the topic How to use nrf24l01 with esp32 s3 / c3 didn't help me in any way.
I have used the following code to test the connection:
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#include <printf.h>
#define CE_PIN 10
#define CSN_PIN 9
#define SCK_PIN 4
#define MISO_PIN 5
#define MOSI_PIN 6
#define SS_PIN 7
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() {
//SPI.begin(SCK_PIN, MISO_PIN, MOSI_PIN, SS_PIN);
Serial.begin(9600);
printf_begin();
Serial.println("CheckConnection Starting");
Serial.println();
Serial.println("FIRST WITH THE DEFAULT ADDRESSES after power on");
Serial.println(" Note that RF24 does NOT reset when Arduino resets - only when power is removed");
Serial.println(" If the numbers are mostly 0x00 or 0xff it means that the Arduino is not");
Serial.println(" communicating with the nRF24");
Serial.println();
radio.begin();
radio.printDetails();
Serial.println();
Serial.println();
Serial.println("AND NOW WITH ADDRESS AAAxR 0x41 41 41 78 52 ON P1");
Serial.println(" and 250KBPS data rate");
Serial.println();
radio.openReadingPipe(1, thisSlaveAddress);
radio.setPALevel(RF24_PA_MIN);
radio.setDataRate( RF24_250KBPS );
radio.printDetails();
Serial.println();
Serial.println();
}
void loop() {
}
with both the SPI.begin(...) line included and excluded.
I have checked the pins_arduino.h file for this board (using the "ESP32 C3 Dev Module" library) and it matches what I have done in my physical wiring and sw definitions.
However, all I ever get on the serial output it
ESP-ROM:esp32c3-api1-20210207
CheckConnection Starting
FIRST WITH THE DEFAULT ADDRESSES after power on
Note that RF24 does NOT reset when Arduino resets - only when power is removed
If the numbers are mostly 0x00 or 0xff it means that the Arduino is not
communicating with the nRF24
SPI Speedz = 10 Mhz
STATUS = 0x00 RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=0 TX_FULL=0
RX_ADDR_P0-1 = 0x0000000000 0x0000000000
RX_ADDR_P2-5 = 0x00 0x00 0x00 0x00
TX_ADDR = 0x0000000000
RX_PW_P0-6 = 0x00 0x00 0x00 0x00 0x00 0x00
EN_AA = 0x00
EN_RXADDR = 0x00
RF_CH = 0x00
RF_SETUP = 0x00
CONFIG = 0x00
DYNPD/FEATURE = 0x00 0x00
Data Rate = 1 MBPS
Model = nRF24L01+
CRC Length = Disabled
PA Power = PA_MIN
ARC = 0
AND NOW WITH ADDRESS AAAxR 0x41 41 41 78 52 ON P1
and 250KBPS data rate
SPI Speedz = 10 Mhz
STATUS = 0x00 RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=0 TX_FULL=0
RX_ADDR_P0-1 = 0x0000000000 0x0000000000
RX_ADDR_P2-5 = 0x00 0x00 0x00 0x00
TX_ADDR = 0x0000000000
RX_PW_P0-6 = 0x00 0x00 0x00 0x00 0x00 0x00
EN_AA = 0x00
EN_RXADDR = 0x00
RF_CH = 0x00
RF_SETUP = 0x00
CONFIG = 0x00
DYNPD/FEATURE = 0x00 0x00
Data Rate = 1 MBPS
Model = nRF24L01+
CRC Length = Disabled
PA Power = PA_MIN
ARC = 0
which shows basically no communications between the ESP and the RF module.
My circuit is on a PCB (not a breadboard) and I have a 10uF cap across the power rails.
I have also swapped the RF module out (I have the TX half of the comms project running on an Arduino Mini) and had no issues getting it up and running and talking to a proto receiver running on an Uno.
So I am now stuck. I have double checked my wiring traces on the board and all are fine.
As far as I understand I can connect CE and CSN to any available pin however maybe I have chosen unwisely here.
So basically, has anyone successfully connect these two modules together and if so, any special hardware/software considerations.
).
