Changing SPI pins using SOFTSPI in RF24 library doesn't work (nRF24L01+ module)

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1

I'm trying to get the nRF24L01+ module to work on different pins other than the SPI pins (50-52) on the Arduino Mega. Using the RF24 library, I discovered that I should be able to do this if I follow these steps:

  1. Uncomment the #define SOFTSPI line in the RF24_config.h file.
  2. #include <DigitalIO.h> in the sketch.
  3. Define new pins (40-42) for MOSI, MISO and SCK using the same macros used in the library.

This, in theory should work however it doesnt with me. Am I missing a step?
This module works normally on hardware SPI pins

Receiver code:

#define SOFT_SPI_MISO_PIN 42
#define SOFT_SPI_MOSI_PIN 41
#define SOFT_SPI_SCK_PIN 40

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


RF24 radio(2, 3); // CE, CSN

const byte address[6] = "00001";

void setup() {
  Serial.begin(9600);
  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);
  }
}
2

Did the same NRF24 module work on the hardware SPI pins ?

3

Yes, tested multiple times

4

Have a look at this post. Post #5.

5

I saw this post before, his solution in the end is exactly what im doing right now this is why im confused

6

Did anyone find a solution to this? I'm doing the exact same thing as @saifeldeenadel but on an Uno. No transmission is taking place with software spi. Hardware SPI works flawless.

7

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