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nRF24L01+ full driver by Eduardo Guilherme Brandt
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dmendesf



Joined: 31 Dec 2005
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PostPosted: Wed May 11, 2016 10:22 pm     Reply with quote

Thank you for your answer. I already found these websites (and others) talking about the differences between these clones. All of them use Arduino code to talk to them. I use this code with ccs and the most common clone and it works ok. The other ones doesn't seem to work no matter what I change trying to bypass their flaws, so i wanted to know if someone succeeded.
Eduardo__



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PostPosted: Thu May 12, 2016 5:55 am     Reply with quote

Uau, It is really not good! Some of people that posted here can be using fake nRFs. Some code can not work!

;(
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Eduardo Guilherme Brandt
dmendesf



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PostPosted: Thu May 12, 2016 6:05 am     Reply with quote

Hi Eduardo, fellow brazilian here from Rio de Janeiro. Sorry for the mistypings in the last messages but I was using a cell phone with typing corrections for portuguese, so it was a bit hard to type right Smile

Here's some more investigative work trying to discover what's inside the blob:

https://forum.mysensors.org/topic/1664/which-are-the-best-nrf24l01-modules/201

The most strange ones are these:

http://robohaat.com/br/home/340-dip-nrf24l01-wireless-data-transmission-module.html

I have some of them... couldn't even make them oscillate, let alone talk with each other :D
Eduardo__



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PostPosted: Thu May 12, 2016 6:41 am     Reply with quote

Thanks dmendesf and all of others answers.
It is really good to see it here ;)
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Eduardo Guilherme Brandt
40inD



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PostPosted: Fri Sep 09, 2016 5:54 am     Reply with quote

Eduardo,
Code:

int RF24_comm(int comm, int32 comm1, int commDS) {   //commDS=datasize(1 to 32 bits)
   int rv;                             //rv=return value(SPI nRF24 status read value)
   RF24_select();       
   RF24_xfer(comm);                    //RF24 Write address/command(see RF24_addr addresses list tabble in .h file)
   rv=spi_xfer(RF24_SPI, comm1, commDS);//Write config.value or command(1 to 32 bits of data)___I CANNOT USE RF24_xfer() ALIAS BECAUSE IT NOT ACCEPTS MORE THAN 1 PARAMETER
   rv=spi_read2();                     //It?s necessary due to spi_xfer read bug
   RF24_unselect();   
   return rv;                    //Return last read value
}

rises error "Expression must evaluate to a constant" for commDS
Eduardo__



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PostPosted: Fri Sep 09, 2016 6:52 am     Reply with quote

Probably the problem is the version of the compiler.

The code worked originally in CCS version 4.124 or similar.
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Eduardo Guilherme Brandt
chico_pic



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PostPosted: Fri Oct 14, 2016 9:05 pm     Reply with quote

Can someone help me, I want use pic16F1455.
I have this error
Code:

 rv=spi_xfer(RF24_SPI, comm1, commDS);//Write config.value or command(1 to 32 bits of data)___I CANNOT USE RF24_xfer() ALIAS BECAUSE IT NOT ACCEPTS MORE THAN 1 PARAMETER

*** Error 27: Expression must evaluate to a constant

and for other one is:
Code:
TX_BUFFER_FULL    =0b00000001    //(R)(0)TX FIFO full flag. 1: TX FIFO full. 0: Available locations in TX FIFO.

*** Error 31: Identifier is already used in this scope

I use ccs 5.061


I change this
Code:
//********** DEFINE PORT NAMES
#define  SPI_MISO       PIN_C2   //SPI(Usar por hardware quando possivel)
#define  SPI_MOSI       PIN_C1   //SPI(Usar por hardware quando possivel)
#define  SPI_CLK        PIN_C0   //SPI(Usar por hardware quando possivel)

//Driver nRF24L01P.C
#define  RF24_IRQ       PIN_A4   //interrupcao nRF24L01+
#define  RF24_CS        PIN_C4   //chipselect nRF24L01+
#define  RF24_CE        PIN_C3   //chipEnable nRF24L01+
#define  RF24_PERFORMANCE_MODE   //performance mode ON
#define  RF24_SPI       NRF_SPI  //Redirects SPI2 port to RS24_SPI stream
Eduardo__



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PostPosted: Mon Oct 17, 2016 11:29 am     Reply with quote

Have you seen the example file, at the top of this topic?
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Eduardo Guilherme Brandt
zidged



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PostPosted: Wed Feb 01, 2017 11:55 am     Reply with quote

Dear Eduardo,

This is first signalling which generated from RF24_default_config() function.
As you can see some clocks are missing. I don't understand what is wrong. I am waiting for your reply as soon as possible.



I changed this function to check something.
Code:

int RF24_comm(int comm, int32 comm1, int commDS) { 
 //commDS=datasize(1 to 32 bits)
   int rv;   //rv=return value(SPI nRF24 status read value)
   RF24_select();       
   RF24_xfer(comm);  //RF24 Write address/command(see RF24_addr addresses list table in .h file)
   rv=spi_xfer(RF24_SPI, comm1, commDS); //Write config.value or command(1 to 32 bits of data)___I CANNOT USE RF24_xfer() ALIAS BECAUSE IT NOT ACCEPTS MORE THAN 1 PARAMETER.
   rv=spi_read2();   //It´s necessary due to spi_xfer read bug
   RF24_unselect();   
   return rv;   //Return last read value
}

I am getting:
Quote:
"Expression must evaluate to a constant" message cause that " rv=spi_xfer(RF24_SPI, comm1, commDS); "

error message for "commDS".
I think this argument is the third byte of configuration parameters.
zidged



Joined: 23 Nov 2012
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PostPosted: Thu Feb 02, 2017 11:12 am     Reply with quote

zidged wrote:
Dear Eduardo,

This is first signalling which generated from RF24_default_config() function.
As you can see some clocks are missing. I don't understand what is wrong. I am waiting for your reply as soon as possible.



I changed this function to check something.
Code:

int RF24_comm(int comm, int32 comm1, int commDS) { 
 //commDS=datasize(1 to 32 bits)
   int rv;   //rv=return value(SPI nRF24 status read value)
   RF24_select();       
   RF24_xfer(comm);  //RF24 Write address/command(see RF24_addr addresses list table in .h file)
   rv=spi_xfer(RF24_SPI, comm1, commDS); //Write config.value or command(1 to 32 bits of data)___I CANNOT USE RF24_xfer() ALIAS BECAUSE IT NOT ACCEPTS MORE THAN 1 PARAMETER.
   rv=spi_read2();   //It´s necessary due to spi_xfer read bug
   RF24_unselect();   
   return rv;   //Return last read value
}

I am getting:
Quote:
"Expression must evaluate to a constant" message cause that " rv=spi_xfer(RF24_SPI, comm1, commDS); "

error message for "commDS".
I think this argument is the third byte of configuration parameters.


i changed SPI configuration to Force_SW and done.
zidged



Joined: 23 Nov 2012
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PostPosted: Thu Feb 02, 2017 11:13 am     Reply with quote

40inD wrote:
Eduardo,
Code:

int RF24_comm(int comm, int32 comm1, int commDS) {   //commDS=datasize(1 to 32 bits)
   int rv;                             //rv=return value(SPI nRF24 status read value)
   RF24_select();       
   RF24_xfer(comm);                    //RF24 Write address/command(see RF24_addr addresses list tabble in .h file)
   rv=spi_xfer(RF24_SPI, comm1, commDS);//Write config.value or command(1 to 32 bits of data)___I CANNOT USE RF24_xfer() ALIAS BECAUSE IT NOT ACCEPTS MORE THAN 1 PARAMETER
   rv=spi_read2();                     //It?s necessary due to spi_xfer read bug
   RF24_unselect();   
   return rv;                    //Return last read value
}

rises error "Expression must evaluate to a constant" for commDS


Change force_hw to force_sw!
Eduardo__



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PostPosted: Thu Feb 02, 2017 11:21 am     Reply with quote

zidged wrote:
Dear Eduardo,

This is first signalling which generated from RF24_default_config() function.
As you can see some clocks are missing. I don't understand what is wrong. I am waiting for your reply as soon as possible.


i changed SPI configuration to Force_SW and done.



But you lose performance using software SPI.
About the error given, check if you enabled passing strings from the RAM to the compiler, as shown below:

Code:
#device PASS_STRINGS=IN_RAM 


//It must be put in the beginning of the program.

Good luck friend!
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Eduardo Guilherme Brandt
inservi



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Great Thank-you
PostPosted: Tue Mar 14, 2017 2:46 am     Reply with quote

Great job, Thank-you :-)
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in médio virtus
sebcar



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Problem with PIC16LF88
PostPosted: Wed May 03, 2017 5:35 am     Reply with quote

Dear Eduardo,
First, thank you for driver. However, it has been a long time since i have programed on PIC, and i did not manage to compile.

First I give my scheme:

[img]https://goo.gl/photos/4XMjeoEfiauCHvBMA[/img]

I use a PIC 16LF88, the internal oscillator at 4 MHz, ICSP and 3.3V PIC.
I program on CCS v 5.008.
Secondly I have this code:

.h File
Code:

#include <16F88.h>
#DEVICE *=16    ICD=TRUE  PASS_STRINGS=IN_RAM
#device ADC=10

#FUSES NOWDT                    //No Watch Dog Timer
#FUSES PUT                      //Power Up Timer
#FUSES NOBROWNOUT               //No brownout reset
#FUSES NOLVP                    //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O

#use delay(internal=4MHz)
#use STANDARD_IO( A )
#use FIXED_IO( A_outputs=PIN_A2,PIN_A1 )


The .c file:
Code:

#include <Domotique Pic.h>
//#USE SPI (MASTER, SPI1, ENABLE=PIN_B3, MODE=0, BITS=8, STREAM=RF24_SPI)
//#USE SPI(FORCE_SW , DI=PIN_B1, DO=PIN_B2, CLK=PIN_B4,ENABLE=PIN_B3, MASTER, MODE=0, BITS=8, MSB_FIRST, STREAM=STREAM_SPI)
#USE SPI(FORCE_SW, SPI2, MASTER, BAUD=1000000, MODE=0, BITS=8, MSB_FIRST, STREAM=STREAM_SPI2)

#define BatMes    PIN_A0
#define DhCt      PIN_A1
#define BatCt     PIN_A2
#define DHT-11    PIN_A4
#define SPI_MISO  PIN_B1
#define SPI_MOSI  PIN_B2
#define RF24_CS   PIN_B3
#define SPI_CLK   PIN_B4
#define RF24_CE   PIN_B5
#define RF24_IRQ  PIN_B0
#define  RF24_PERFORMANCE_MODE   //performance mode ON
#define PGC   PIN_B6
#define PGD   PIN_B7
#define RF24_SPI STREAM_SPI2

#include <nRF24L01P.c>

void main()
{
   setup_adc_ports(sAN0);
   setup_adc(ADC_CLOCK_INTERNAL);
   setup_timer_1(T1_INTERNAL|T1_DIV_BY_8);      //2,0 s overflow

   while(TRUE)
   {
      output_high(PIN_A7);
      delay_ms(100);
      output_low(PIN_A7);
      delay_ms(100);
      RF24_driver_use_example_TXdata_simple();
   }

}

My problem is that I have to make modification into driver to compile.
I changed the code on:
Code:

int RF24_comm(int comm, int32 comm1, int commDS) {
  //commDS=datasize(1 to 32 bits)
   int rv; //rv=return value(SPI nRF24 status read value)
   RF24_select();
   RF24_xfer(comm);    //RF24 Write address/command (see RF24_addr addresses list tabble in .h file)
   rv=spi_xfer(RF24_SPI, comm1); //Write config.value or command (1 to 32 bits of data)___I CANNOT USE RF24_xfer() ALIAS BECAUSE IT NOT ACCEPTS MORE THAN 1 PARAMETER rv=spi_xfer(RF24_SPI, comm1, commDS);
   rv=spi_read2();    //It's necessary due to spi_xfer read bug
   RF24_unselect();   
   return rv;

I have to suppress commDS from spi_xfer to not have the error:
"Expression must evaluate a constant".

Second error:

In nrf24l01p.h i modify:
Code:

//Automated functions contemplated register.   
enum RF24_STATUS {   // **Status Register (In parallel to the SPI command word applied on the MOSI pin, the STATUS register is shifted serially out on the MISO pin)
   IRQ_RX_dataready  =0b01000000,   // (0)Data Ready RX FIFO interrupt. Asserted when new data arrives RX FIFOc.Write 1 to clear bit.
   IRQ_TX_datasent   =0b00100000,   // (0)Data Sent TX FIFO interrupt. Asserted when packet transmitted on TX. If AUTO_ACK is activated,this bit is set high only when ACK isreceived.Write 1 to clear bit.
   IRQ_MAX_retransmit=0b00010000,   // (0)Maximum number of TX retransmits interrupt Write 1 to clear bit. If asserted it must be cleared to enable further communication.
   IRQ_ALL           =0b01110000,   // Allows clearing all IRQs at the same time
   RX_PIPE0          =0b00000000,   // (R)(bits 3:1)Data pipe number for the payload available for reading from RX_FIFO 000-101: Data Pipe Number
   RX_PIPE1          =0b00000010,   // (R)(bits 3:1)Data pipe number for the payload available for reading from RX_FIFO 000-101: Data Pipe Number
   RX_PIPE2          =0b00000100,   // (R)(bits 3:1)Data pipe number for the payload available for reading from RX_FIFO 000-101: Data Pipe Number
   RX_PIPE3          =0b00000110,   // (R)(bits 3:1)Data pipe number for the payload available for reading from RX_FIFO 000-101: Data Pipe Number
   RX_PIPE4          =0b00001000,   // (R)(bits 3:1)Data pipe number for the payload available for reading from RX_FIFO 000-101: Data Pipe Number
   RX_PIPE5          =0b00001010,   // (R)(bits 3:1)Data pipe number for the payload available for reading from RX_FIFO 000-101: Data Pipe Number
   RX_BUFFER_EMPTY   =0b00001110,   // (R)Data pipe number for the payload available for reading from RX_FIFO 000-101: Data Pipe Number
   TX_BUFFER_FULL2    =0b00000001    // (R)(0)TX FIFO full flag. 1: TX FIFO full. 0: Available locations in TX FIFO.
   };

I have to change TX_BUFFER_FULL to TX_BUFFER_FULL2 to not have the error:
"Identifier is already used in this scope".

Are there some more errors to correct to be able to communicate as soon as possible ? I want to communicate with a Raspberry.

Thank you a lot.

Sebastien, Pic Dummy.
PCM programmer



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PostPosted: Wed May 03, 2017 5:57 pm     Reply with quote

sebcar wrote:

I have to suppress commDS from spi_xfer to not have the error:
"Expression must evaluate a constant".

That's because in modern versions of the CCS compiler, if you specify
hardware spi in the #use spi() statement, then CCS will only allow a
constant numeric value for the "number of bits" parameter in spi_xfer().
In other words, it gives an error for this:
Code:
rv=spi_xfer(RF24_SPI, comm1, commDS);

But it will compile with this:
Code:
rv=spi_xfer(RF24_SPI, comm1, 8);

But you don't have to worry about it. You can comment out the last
RF24_comm() function in that section of code. The last section is not used.
Comment it out, as shown below. Then it's no problem:
Code:

/*
int RF24_comm(int comm, int32 comm1, int32 commDS) {   //commDS=datasize(1 to 32 bits)
   int rv;                             //rv=return value(SPI nRF24 status read value)
   RF24_select();       
   RF24_xfer(comm);                    //RF24 Write address/command(see RF24_addr addresses list tabble in .h file)
   rv=spi_xfer(RF24_SPI, comm1, commDS); //Write config.value or command(1 to 32 bits of data)___I CANNOT USE RF24_xfer() ALIAS BECAUSE IT NOT ACCEPTS MORE THAN 1 PARAMETER
//   rv=spi_read();                     //It´s necessary due to spi_xfer read bug
   RF24_unselect();   
   return rv;                    //Return last read value
}
*/



sebcar wrote:
#USE SPI(FORCE_SW, SPI2, MASTER, BAUD=1000000, MODE=0, BITS=8, MSB_FIRST, STREAM=STREAM_SPI2)

#define RF24_SPI STREAM_SPI2

There are several problems in your #use spi() statement above:
1. There is no "SPI2" module in the 16LF88. That PIC only has SPI1.
2. It's better to use hardware SPI, because it's faster.
3. I see no need to rename the stream.

I changed it to this:
Code:
#USE SPI(MASTER, SPI1, BAUD=1000000, MODE=0, BITS=8, MSB_FIRST, STREAM=RF24_SPI)

// #define RF24_SPI STREAM_SPI2   // Comment out, or delete this line.


Then it should compile, though it will still give some warnings.
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