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nRF24L01+ full driver by Eduardo Guilherme Brandt
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hassasian



Joined: 05 Jul 2015
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PostPosted: Sun Aug 09, 2015 6:08 am     Reply with quote

dezso wrote:
After checking this code now I see that I'm not using hardware SPI, its a simple bit-bang SPI communication.
If you use the F628A chip than it should work fine, if you using different chip than please check to be sure your ports are configured properly.


I'm using 16f628a. And I'm using the code which I send the upper post. I have 2 16f628a, one of them sender, one of them receiver. But this doesn't work. What did you mean with saying be sure your ports are configured properly??

Here is my connections:
CE -> RA0
CSN -> RA1
SCK -> RA2
MOSI-> RA3
MISO-> RA4
IRQ -> B0

Same as my code as you see.
For explain on receiver (RX mode) irq pin from nrf always giving 3.3v. I have a problem but I cannot find it. I have just 4 more days for solve this problem. I'm waiting for your answer. Sincerely.
tienchuan



Joined: 25 Aug 2009
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PostPosted: Wed Aug 12, 2015 11:59 pm     Reply with quote

Hi everyone:)
I have a problem when using this driver to test with NRF24L01+ module, using PIC16LF1455, CCS C ver5.044
I am using the examples in this driver, but maybe have an error in checking IRQ pin status.
If i put a comment line in below, the code can run in main loop, otherwise, it stops in here, because the IRQ does not change state when sending a msg out (it is still at a high level, don't go to low level)
Code:
while(RF24_IRQ_state()==false); 

Here is my test program. I using the driver copied from page 1 of this topic, and only edit with put comment at all rv = spi_read2();

Code:

#include "16LF1455.h"
#DEVICE *=16    PASS_STRINGS=IN_RAM       
#fuses HS,PUT,PROTECT,NOLVP,NOWDT,NOPROTECT, NOBROWNOUT, NOCLKOUT, NOIESO, NOFCMEN, NOWRT, NOCPUDIV, NOPLLEN, NOLPBOR, NODEBUG
#use delay(internal=16000000)
#define  RF24_SPI       STREAM_SPI 
#USE SPI( FORCE_SW, MASTER, DI=PIN_C2, DO=PIN_C1, CLK=PIN_C0, BAUD=10000000, MODE=0, BITS=8, MSB_FIRST, STREAM=RF24_SPI)
#use fast_io(c)



#define  SPI_MISO       PIN_C2   //RC2,RP13; SPI(Usar por hardware)
#define  SPI_MOSI       PIN_C1   //RC7,RP18; SPI(Usar por hardware)
#define  SPI_CLK        PIN_C0   //RB0,RP3;  SPI(Usar por hardware)

//Driver nRF24L01P.C
#define  RF24_IRQ       PIN_C3   //RC5,RP16; interrupt  nRF24L01+
#define  RF24_CS        PIN_A1   //RB1,RP4;  chipselect nRF24L01+
#define  RF24_CE        PIN_A0  //RB2,RP5;  chipEnable nRF24L01+
#define  RF24_PERFORMANCE_MODE   //performance mode ON

#define  RF24_SPI_DISABLE_WARNING


#include "nRF24L01P.c"

void main(void)
{
   delay_ms(100);
   setup_oscillator(OSC_16MHZ | OSC_INTRC); 
   delay_ms(100);
   setup_comparator(NC_NC_NC_NC);
   setup_vref(VREF_OFF);
   setup_dac(DAC_OFF);

   setup_pwm1(PWM_DISABLED);
   setup_pwm2(PWM_DISABLED);


   setup_adc(ADC_OFF);
//!   
   
   
   RF24_initPorts();
   RF24_default_config();
   RF24_TX_SET();       //Transmitter on   
   output_high(PIN_C4);

   for(;;)
   {

      output_toggle(PIN_c4);
      RF24_TX_putbuffer(false,1, "1");
     
      while(RF24_IRQ_state()==false);   
      RF24_STATUS_clr_IRQs(IRQ_ALL);     
//!      RF24_driver_use_example_TXdata_simple(); // tried with example but not success
      delay_ms(1000);
   }

}


Pls show me way to fix this error.
Thanks you.
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dezso



Joined: 04 Mar 2010
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PostPosted: Sat Aug 15, 2015 2:26 pm     Reply with quote

hassasian wrote:
dezso wrote:
After checking this code now I see that I'm not using hardware SPI, its a simple bit-bang SPI communication.
If you use the F628A chip than it should work fine, if you using different chip than please check to be sure your ports are configured properly.


I'm using 16f628a. And I'm using the code which I send the upper post. I have 2 16f628a, one of them sender, one of them receiver. But this doesn't work. What did you mean with saying be sure your ports are configured properly??

Here is my connections:
CE -> RA0
CSN -> RA1
SCK -> RA2
MOSI-> RA3
MISO-> RA4
IRQ -> B0

Same as my code as you see.
For explain on receiver (RX mode) irq pin from nrf always giving 3.3v. I have a problem but I cannot find it. I have just 4 more days for solve this problem. I'm waiting for your answer. Sincerely.



PORTA is an 8-bit wide latch. RA4 is a Schmitt Trigger-input and an open drain output, might need pull up resistor ?
I haven't used this hardware for some time now, in fact haven't used PIC for over a year.
Do you have logic analyzer or a scope ? Check this pins make sure something going out/in
_________________
I'm could be wrong many time's, at least I know what I'm doing Smile
pran



Joined: 10 Sep 2015
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PostPosted: Thu Sep 10, 2015 12:23 am     Reply with quote

Hi Eduardo and all. Currently i am using Dezso's code in my project and I have a doubt in it.
Code:

void configure_RX()
{
    int i;
    RX_CSN_Low();
    RX_CE_Low();;
    bb_xfer(W_REGISTER);    //PRX, CRC enabled
    bb_xfer(0x39);  //data 0b0011 1001
    pulse_CSN();
    delay_ms(2);
    //-----------
    bb_xfer(0x21);  //dissable auto-ack for all channels
    bb_xfer(0x00);  ///
    pulse_CSN();
    //-----------
    bb_xfer(0x23); //address width = 5 bytes
    bb_xfer(0x03);
    pulse_CSN();
    //-----------
    bb_xfer(0x26); //data rate = 1MB
    bb_xfer(0x07);
    pulse_CSN();
    //-----------
    bb_xfer(0x31);  //4 byte payload
    bb_xfer(0x04);
    pulse_CSN();
    //-----------
    bb_xfer(0x25); //set channel 2
    bb_xfer(0x02);
    pulse_CSN();
    //-----------
    bb_xfer(0x30); //set address E7E7E7E7E7
    for(i=0;i<=5;i++)
    {
        bb_xfer(0xe7); // send 5 bytes of data E7 E7 E7 E7 E7
    }
        pulse_CSN();
    //----------------
    bb_xfer(0x20); //PWR_UP = 1
    bb_xfer(0x3b);
    RX_CSN_High();;
    RX_CE_High();
}
 

I am having doubt in this part. In this function the command W_REGISTER has been sent only once in the line, bb_xfer(W_REGISTER); bb_xfer(0x39);
Isn't it necessary to send the command W_REGISTER everytime before a databyte is sent?
In the datasheet the command format is given as,
<COMMANDWORD> <DATABYTE>
In the databyte section we have to provide the register name, right? Then where are we supposed to provide the data to be written to the register?

Please clarify the doubt.
pran



Joined: 10 Sep 2015
Posts: 4

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PostPosted: Thu Sep 17, 2015 4:37 am     Reply with quote

Hi all.I had posted in the forum with the hope of getting a reply.I would be grateful to you,if you could help me in this regard. Sad
Thanking you in advance
Eduardo__



Joined: 23 Nov 2011
Posts: 197
Location: Brazil

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PostPosted: Thu Sep 17, 2015 7:54 am     Reply with quote

Sorry, but I'm working on my Master's degree dissertation, so I'm very busy and can not help the community till beginning next year.

Sorry for all Crying or Very sad
Eduardo
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Eduardo Guilherme Brandt
Eduardo__



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Posts: 197
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PostPosted: Mon Oct 26, 2015 5:16 am     Reply with quote

From: aaronik19
To: Eduardo__
Posted: Sat Oct 24, 2015 7:22 pm
Subject: nrf24 question
Quote:
Dear Eduardo,

I saw your post about the nRF24 well done. Large code indeed!

Can I ask you something, this device is good for full mesh network? Is it possible to make individual address of nodes and broadcast messages?


nRF24 accepts broadcast messages and up to 5 different receiving addresses. They are called pipes.

But I think that is a bit limited. It's better to implement in software a second address layer, so you will be able to accept more than 5 addresses and broadcast messages for them.

Good luck!
Eduardo
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Eduardo Guilherme Brandt
lucasromeiro



Joined: 27 Mar 2010
Posts: 167

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duvida!
PostPosted: Mon Apr 11, 2016 10:32 pm     Reply with quote

Hello Eduardo, okay?
Brazuca friend!
Boy, I looked at your code and is very large.
I lost it.

I have a pic 16F628A and need to communicate with a nRF24L01.
The problem is that this PIC does not have a hardware SPI module or a lot of memory.
So I need to send some simple commands.
3 commands actually.
Enable 3 leds

Urgent college work.

Can you help me friend?
Eduardo__



Joined: 23 Nov 2011
Posts: 197
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PostPosted: Tue Apr 12, 2016 6:57 am     Reply with quote

Hallo Lucas!

Thats ok for PIC16F628A. I've already used this driver in this uC. Just include files as the example at the beginning of this topic (I think this example is located at page 2 of this topic).
About SPI, configure the SPI normally as software spi. It will work fine.

Sorry I've have no time to help, cause I'm very busy at this time.
Good luck friend!!!
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Eduardo Guilherme Brandt
lucasromeiro



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ajuda
PostPosted: Tue Apr 12, 2016 10:58 pm     Reply with quote

Eduardo__ wrote:
Hallo Lucas!

Thats ok for PIC16F628A. I've already used this driver in this uC. Just include files as the example at the beginning of this topic (I think this example is located at page 2 of this topic).
About SPI, configure the SPI normally as software spi. It will work fine.

Sorry I've have no time to help, cause I'm very busy at this time.
Good luck friend!!!


Thank you friend!
I tried to do as asked, but could not a legal result.
Faked, but on the other side I get garbage.
Look at the code transmitter and receiver:
transmissor:
Code:

//
#include "16F628A.H"
#DEVICE *=16    ICD=TRUE  PASS_STRINGS=IN_RAM    //Admite ponteiros para constantes
//#SERIALIZE(id=TR_serial_number, next="1" | file="TR_serial_number.txt" " | listfile="TR_serial_number.list", log="TR_serial_number.log")

#fuses MCLR,HS
#use delay(clock=20M)
//#use delay(clock=14.31818M)     //Cristal a 20MHz  (Prototipo com 14.31818MHz)
#USE SPI(FORCE_SW , DI=PIN_A4, DO=PIN_A3, CLK=PIN_A2, MASTER, BAUD=10000000, MODE=0, BITS=8, MSB_FIRST, STREAM=STREAM_SPI)
#use rs232(baud=9600,parity=N,xmit=PIN_B4,rcv=PIN_B5,bits=8)
//#use rs232(baud=115200, xmit=PIN_B4,FORCE_SW, INVERT, STREAM=DBG)   //57600
#define RF24_SPI_DISABLE_WARNING  //for disabling nRF24 SPI warning message.




//********** DEFINE PORT NAMES
#define  SPI_MISO       PIN_A4   //SPI(Usar por hardware quando possivel)
#define  SPI_MOSI       PIN_A3   //SPI(Usar por hardware quando possivel)
#define  SPI_CLK        PIN_A2   //SPI(Usar por hardware quando possivel)

//Driver nRF24L01P.C
#define  RF24_IRQ       PIN_B0   //interrupcao nRF24L01+
#define  RF24_CS        PIN_A1   //chipselect nRF24L01+
#define  RF24_CE        PIN_A0   //chipEnable nRF24L01+
#define  RF24_PERFORMANCE_MODE   //performance mode ON
#define  RF24_SPI       STREAM_SPI//Redirects SPI2 port to RS24_SPI stream




//INCLUDES_2   -  Drivers
#include <nRF24L01P.C>           //Driver nRF24L01+   Single Chip 2.4GHz Transceiver Driver
//#include <DS1307.C>              //Driver RTC DS1307 I2C

//INCLUDES_3
#include <STDLIB.H>




/*******************************************************************************
*
*       ====INICIO PROGRAMA====
*
*******************************************************************************/
void main() {
   RF24_driver_use_example_TXdata_simple();     //Example of using RF24 driver
}


receptor:
Code:

//
#include "16F628A.H"
#DEVICE *=16    ICD=TRUE  PASS_STRINGS=IN_RAM    //Admite ponteiros para constantes
//#SERIALIZE(id=TR_serial_number, next="1" | file="TR_serial_number.txt" " | listfile="TR_serial_number.list", log="TR_serial_number.log")

#fuses MCLR,HS
#use delay(clock=20M)
//#use delay(clock=14.31818M)     //Cristal a 20MHz  (Prototipo com 14.31818MHz)
#USE SPI(FORCE_SW , DI=PIN_A4, DO=PIN_A3, CLK=PIN_A2, SLAVE, BAUD=10000000, MODE=0, BITS=8, MSB_FIRST, STREAM=STREAM_SPI)
#use rs232(baud=9600,parity=N,xmit=PIN_B4,rcv=PIN_B5,bits=8)
//#use rs232(baud=115200, xmit=PIN_B4,FORCE_SW, INVERT, STREAM=DBG)   //57600
#define RF24_SPI_DISABLE_WARNING  //for disabling nRF24 SPI warning message.




//********** DEFINE PORT NAMES
#define  SPI_MISO       PIN_A4   //SPI(Usar por hardware quando possivel)
#define  SPI_MOSI       PIN_A3   //SPI(Usar por hardware quando possivel)
#define  SPI_CLK        PIN_A2   //SPI(Usar por hardware quando possivel)

//Driver nRF24L01P.C
#define  RF24_IRQ       PIN_B0   //interrupcao nRF24L01+
#define  RF24_CS        PIN_A1   //chipselect nRF24L01+
#define  RF24_CE        PIN_A0   //chipEnable nRF24L01+
#define  RF24_PERFORMANCE_MODE   //performance mode ON
#define  RF24_SPI       STREAM_SPI//Redirects SPI2 port to RS24_SPI stream



//INCLUDES_2   -  Drivers
#include <nRF24L01P.C>           //Driver nRF24L01+   Single Chip 2.4GHz Transceiver Driver
//#include <DS1307.C>              //Driver RTC DS1307 I2C

//INCLUDES_3
#include <STDLIB.H>




/*******************************************************************************
*
*       ====INICIO PROGRAMA====
*
*******************************************************************************/
void main() {
   RF24_driver_use_example_RXdata();       //Example of using RF24 driver
}




Look this modification I made to the receiver fit in memory ram pic and spit me to receive the serial:
Code:

void RF24_driver_use_example_RXdata() {    //Example of using this driver
   int RXbuffer1[32], RXbuffer2[32], RXbuffer3[32];
   //int RXbuffer4[32], RXbuffer5[32];
   int RXdatasize, RXpipe;
   //int TXbuffer[40], TXdatasize;        //not necessary
   //int stat=0,fstat=0,retrys,lost,ret;  //
   //int i=false;
   
   RF24_initPorts();
   RF24_default_config();
   
   //RF24_check_config();    //check configuration 

   RF24_RX_SET();       //Receiver on
   while(true) {
     
      while ( RF24_RX_getbuffer(&RXpipe, &RXdatasize, RXbuffer1)!=true );    //Wait till receive data(1 to 32 bytes) into buffer(from default_config address of pipe0)
      while ( RF24_RX_getbuffer(&RXpipe, &RXdatasize, RXbuffer2)!=true );    //Wait till receive data(1 to 32 bytes) into buffer(from default_config address of pipe0)
      while ( RF24_RX_getbuffer(&RXpipe, &RXdatasize, RXbuffer3)!=true );    //Wait till receive data(1 to 32 bytes) into buffer(from default_config address of pipe0)
      //while ( RF24_RX_getbuffer(&RXpipe, &RXdatasize, RXbuffer4)!=true );    //Wait till receive data(1 to 32 bytes) into buffer(from default_config address of pipe0)
      //while ( RF24_RX_getbuffer(&RXpipe, &RXdatasize, RXbuffer5)!=true );    //Wait till receive data(1 to 32 bytes) into buffer(from default_config address of pipe0)
     
     printf("\r\n%s",RXbuffer1);
      /*while (!i) {
         i=RF24_RX_getbuffer(&RXpipe, &RXdatasize, RXbuffer1);    //Wait till receive data(1 to 32 bytes) into buffer(from default_config address of pipe0)
         if (!i) buzzer_off();
         else { buzzer_on(); delay_ms(10); buzzer_off(); }
      }
      i=false;*/
   
      //RF24_STATUS_clr_IRQs(IRQ_ALL);      //Allows clearing all IRQs at the same time
     
      //fstat=RF24_FIFO_STATUS();
      //stat=RF24_get_status();
      //buzzer_on(); delay_ms(1); buzzer_off(); //Beepa Buzzer
      delay_cycles(1);
   }



Look what screen print happens:


Can you help me??
Thank you!!!!
lucasromeiro



Joined: 27 Mar 2010
Posts: 167

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PostPosted: Thu Apr 14, 2016 8:21 am     Reply with quote

Eduardo,
Can help me?
My whats: 71 98605-0664
Eduardo__



Joined: 23 Nov 2011
Posts: 197
Location: Brazil

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PostPosted: Thu Apr 14, 2016 11:28 am     Reply with quote

Sorry Lucas. I´m very busy at these days.
_________________
Eduardo Guilherme Brandt
mutthunaveen



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PostPosted: Thu May 05, 2016 10:59 am     Reply with quote

lucasromeiro wrote:
Eduardo,
Can help me?
My whats: 71 98605-0664


Hi Lucas plz check if my new post fits in.. its simple to configure and works good.
dmendesf



Joined: 31 Dec 2005
Posts: 29

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New nrf clones
PostPosted: Wed May 11, 2016 7:46 pm     Reply with quote

Has anyone managed to make these new nrf clones with blobs instead of chips work with this code? I still don't.
PCM programmer



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Posts: 20318

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PostPosted: Wed May 11, 2016 10:15 pm     Reply with quote

See this website. It talks about the "blob" clones:
https://forum.mysensors.org/topic/1153/we-are-mostly-using-fake-nrf24l01-s-but-worse-fakes-are-emerging

Differences between clones:
https://sigrok.org/wiki/Protocol_decoder:Nrf24l01
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