Arduino for STM32

I cannot get these L432KC nucleo boards communicating over NRF24L01 transceivers. I am very confident on the wiring as I have checked it many times so I feel like it is somehow a software issue. However, running the exact same code on two f411RE nucleo boards it works perfectly. I need to get the two L4 boards communicating for this project and I need help!

I have attached my transmit and receive code below and I would really appreciate any advice!

Transmit:

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

RF24 radio(7,8); //CE, CSN

const byte address[][6] = {"05140", "05141"};
const int buttonPinOpen = 3;
const int buttonPinClose = 4;

int buttonStateOpen = 0;
int buttonStateClose = 0;

void setup() {
Serial.begin(9600);

pinMode(buttonPinOpen, INPUT);
pinMode(buttonPinClose, INPUT);


radio.begin();
radio.openWritingPipe(address[0]);
radio.setPALevel(RF24_PA_MAX);
radio.setChannel(125);

}

void loop() {
buttonStateOpen = digitalRead(buttonPinOpen);
buttonStateClose = digitalRead(buttonPinClose);

if (buttonStateOpen == HIGH){
const char text[] = "Open door";
if(radio.write(&text, sizeof(text))){
Serial.println("it did it");
}
Serial.println(text);
}
if (buttonStateClose == HIGH){
const char text[] = "Close door";
radio.write(&text, sizeof(text));
Serial.println(text);
}

delay(500);

}




The receive code:

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

//const int rs = 9, en = 10, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
//LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
//int backLight = 15;

int a = 7; //pinMap(Mapped Pin) - for mapped pin refer the attacted image
int b = 8;


RF24 radio(a,b); //CE, CSN

const byte address[][6] = {"05140", "05141"};



void setup() {
Serial.begin(9600);

//pinMode(backLight, OUTPUT);
//digitalWrite(backLight, HIGH);
//lcd.begin(16, 2);
//lcd.print("hello, world!");


radio.begin();
radio.openReadingPipe(0, address[0]);
radio.setPALevel(RF24_PA_MIN);
radio.setChannel(125);
radio.startListening();


}

void loop() {
if(radio.available()){
//lcd.clear();
char text[32] = "";
radio.read(&text, sizeof(text));
Serial.println(text);
Serial.println("we");
//lcd.print(text);
delay(500);
//lcd.clear();

}
else{
//Serial.println("whoopsies");
//lcd.clear();
}

}


Would appreciate any advise!

check if spi is working e.g. read the status registers etc from nrf24

Pay attention to the pin configuration. Lot of soldier bridges and same pins available on different headers...

I'd advise to:
- check the return value from radio.begin() (https://nrf24.github.io/RF24/classRF24. ... e6fb9c4ba8)
- try to explicitly specify the SPI pins (e.g. https://github.com/stm32duino/wiki/wiki ... tance-pins)
- check the Nucleo pins you are using again as fpiSTM suggests (https://www.st.com/resource/en/user_man ... ronics.pdf)
- glance over code examples in https://forum.arduino.cc/t/simple-nrf24 ... emo/405123