NRF24L01 help. Does not work.

[Entrax 0]

Hello 

I have problems with the two NRF24L01 and two tm4c123gxl.  I can not get 

it running.

Pins 1. Tm4c123gxl (RX): PC_6 (CE),  PD_2 (MISO),  PD_3 (MOSI),  PD_1 (CS),  PD_0 (SCK),  PE_1 (IRQ)

Pins 2. Tm4c123gxl (TX): PC_7 (CE),  PD_2 (MISO),  PD_3 (MOSI),  PD_1 (CS),  PD_0 (SCK),  PE_1 (IRQ)

I will use a simply Sketch. 

I have found this in the Forum  [Energia Library] Nordic nRF24L01+ library

I have download this Enrf24_v1_8.zip from the Forum.

Enerf24_RXdemo

#include <Enrf24.h>
#include <nRF24L01.h>
#include <string.h>
#include <SPI.h>

Enrf24 radio(PC_6, PD_1, PE_1);
const uint8_t rxaddr[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0x01 };

const char *str_on = "ON";
const char *str_off = "OFF";

void dump_radio_status_to_serialport(uint8_t);

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

  SPI.begin();
  SPI.setDataMode(SPI_MODE0);
  SPI.setBitOrder(MSBFIRST);
  
  radio.begin();  // Defaults 1Mbps, channel 0, max TX power
  dump_radio_status_to_serialport(radio.radioState());

  radio.setRXaddress((void*)rxaddr);
  

  
  radio.enableRX();  // Start listening
}

void loop() {
  char inbuf[33];
  
  dump_radio_status_to_serialport(radio.radioState());  // Should show Receive Mode

  while (!radio.available(true))
    ;
  if (radio.read(inbuf)) {
    Serial.print("Received packet: ");
    Serial.println(inbuf);

    if (!strcmp(inbuf, str_on))
      Serial.println("HIGH");
    if (!strcmp(inbuf, str_off))
      Serial.println("LOW");
  }
}

void dump_radio_status_to_serialport(uint8_t status)
{
  Serial.print("Enrf24 radio transceiver status: ");
  switch (status) {
    case ENRF24_STATE_NOTPRESENT:
      Serial.println("NO TRANSCEIVER PRESENT");
      break;

    case ENRF24_STATE_DEEPSLEEP:
      Serial.println("DEEP SLEEP <1uA power consumption");
      break;

    case ENRF24_STATE_IDLE:
      Serial.println("IDLE module powered up w/ oscillators running");
      break;

    case ENRF24_STATE_PTX:
      Serial.println("Actively Transmitting");
      break;

    case ENRF24_STATE_PRX:
      Serial.println("Receive Mode");
      break;

    default:
      Serial.println("UNKNOWN STATUS CODE");
  }
}

Enrf24_TXdemo

#include <Enrf24.h>
#include <nRF24L01.h>
#include <string.h>
#include <SPI.h>

Enrf24 radio(PC_7, PD_1, PE_1);  // CE, CSN, IRQ
const uint8_t txaddr[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0x01 };

const char *str_on = "ON";
const char *str_off = "OFF";

void dump_radio_status_to_serialport(uint8_t);

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

  SPI.begin();
  SPI.setDataMode(SPI_MODE0);
  SPI.setBitOrder(MSBFIRST);

  radio.begin();  // Defaults 1Mbps, channel 0, max TX power
  dump_radio_status_to_serialport(radio.radioState());

  radio.setTXaddress((void*)txaddr);
}

void loop() {
  Serial.print("Sending packet: ");
  Serial.println(str_on);
  radio.print(str_on);
  radio.flush();  // Force transmit (don't wait for any more data)
  dump_radio_status_to_serialport(radio.radioState());  // Should report IDLE
  delay(1000);

  Serial.print("Sending packet: ");
  Serial.println(str_off);
  radio.print(str_off);
  radio.flush();  //
  dump_radio_status_to_serialport(radio.radioState());  // Should report IDLE
  delay(1000);
}

void dump_radio_status_to_serialport(uint8_t status)
{
  Serial.print("Enrf24 radio transceiver status: ");
  switch (status) {
    case ENRF24_STATE_NOTPRESENT:
      Serial.println("NO TRANSCEIVER PRESENT");
      break;

    case ENRF24_STATE_DEEPSLEEP:
      Serial.println("DEEP SLEEP <1uA power consumption");
      break;

    case ENRF24_STATE_IDLE:
      Serial.println("IDLE module powered up w/ oscillators running");
      break;

    case ENRF24_STATE_PTX:
      Serial.println("Actively Transmitting");
      break;

    case ENRF24_STATE_PRX:
      Serial.println("Receive Mode");
      break;

    default:
      Serial.println("UNKNOWN STATUS CODE");
  }
}

When i am upload this, i don't see the Sending objects. I see only in both Serial.monitor this: "Enrf24 radio transceiver status NO TRANSCEIVER PRESENT".

Can someone help me?

[energia 485]

By default SPI is on SPI(2) which is PB_6 (MISO) PB_7 (MOSI) and PB_4 (SCK). Please see the wiring pin mapping the post you mentioned. It's up a couple posts. Just to make sure, do you have power and ground connected to the NRF as well?

Robert

[Entrax 0]

On 24.4.2017 at 6:23 PM, energia said:

By default SPI is on SPI(2) which is PB_6 (MISO) PB_7 (MOSI) and PB_4 (SCK). Please see the wiring pin mapping the post you mentioned. It's up a couple posts. Just to make sure, do you have power and ground connected to the NRF as well?

Robert

Can i change the default SPI settings to my Pins?

Power (3,3V) and Ground are connected, but not a capacitor between ground and Power (read in tutorials). 

I have change to default SPI, it doesnt work :/

[Entrax 0]

With capacitor doesnt work.

Default SPI doesnt work