Wireless 8051 problems

 Wireless 8051 problems

HI :-) as promised, im having problems with the wireless connection on the nordic nrf24e1, I am trying to send a packet and then if received, flash an LED. Can anyone see any problems with the below code. first is the transmitter code then i will reply with the receiver code:

#include <reg24e1.h>

struct RFConfig
{
    unsigned char n;
    unsigned char buf[15];
};

typedef struct RFConfig RFConfig;

#define ADDR_INDEX  8   // Index to address bytes in RFConfig.buf
#define ADDR_COUNT  4   // Number of address bytes

const RFConfig txconf =
{
    15,
    0x08, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x12, 0x34, 0x56, 0x78, 0x83, 0x6c, 0x04
};

const RFConfig rxconf =
{
    15,
    0x08, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x87, 0x65, 0x43, 0x21, 0x83, 0x6c, 0x05
};



// LED is to be connected to this pin
sbit LED_pin = P1^0;


// Function prototypes
void DELAY_LOOP_Wait(const unsigned int);
void DELAY_100us(volatile unsigned char n);
unsigned char SPI_ReadWrite(unsigned char b);
void TRANSMIT_Packet(unsigned char b);
void TRANSMITTER(void);
void INIT(void);



/*..................................................................*/


void main(void)
{
                INIT();

          while(1)
          {

            TRANSMITTER();


      }



}

/*------------------------------------------------------------------*-

  DELAY_LOOP_Wait()

-*------------------------------------------------------------------*/

void DELAY_LOOP_Wait(const unsigned int DELAY)
   {
   unsigned int x, y;

   for (x = 0; x <= DELAY; x++)
      {
      for (y = 0; y <= 800; y++);
      }
   }



/*------------------------------------------------------------------*-

  DELAY_100us()

-*------------------------------------------------------------------*/

void DELAY_100us(volatile unsigned char n)
{
    unsigned char i;
    while(n--)
        for(i=0;i<35;i++)
            ;
}

/*------------------------------------------------------------------*-

  SPI_ReadWrite()

-*------------------------------------------------------------------*/

unsigned char SPI_ReadWrite(unsigned char b)
{
    EXIF &= ~0x20;                  // Clear SPI interrupt
    SPI_DATA = b;                   // Move byte to send to SPI data register
    while((EXIF & 0x20) == 0x00)    // Wait until SPI hs finished transmitting
        ;
    return SPI_DATA;
}



/*------------------------------------------------------------------*-

  TRANSMIT_Packet()

-*------------------------------------------------------------------*/

void TRANSMIT_Packet(unsigned char b)
{
    unsigned char i;
    CE = 1;
    DELAY_100us(0);
    // Start with the address of the receiver:
    for(i=0;i<ADDR_COUNT;i++)
        SPI_ReadWrite(rxconf.buf[ADDR_INDEX+i]);
    SPI_ReadWrite(b);
    CE = 0;
    DELAY_100us(3);                  // Wait ~300us
}


 /*------------------------------------------------------------------*-

  TRANSMITTER()

-*------------------------------------------------------------------*/

void TRANSMITTER(void)
{
    unsigned char b, bo, err;
    CS = 1;
    DELAY_100us(0);
    for(b=0;b<txconf.n;b++)
    {
        SPI_ReadWrite(txconf.buf[b]);
    }
    CS = 0;
    for(;;)
    {
        //b = ReadADC();              // Read ADC
       TRANSMIT_Packet(b);          // Transmit data
        }
}

void INIT(void)
{
    PWR_UP = 1;                     // Turn on Radio
    DELAY_100us(30);                // Wait > 3ms
    SPICLK = 0;                     // Max SPI clock (XTAL/8)
    SPI_CTRL = 0x02;                // Connect internal SPI controller to Radio

}

 RE: Wireless 8051 problems

Receiver code:

#include <reg24e1.h>

struct RFConfig
{
    unsigned char n;
    unsigned char buf[15];
};

typedef struct RFConfig RFConfig;

#define ADDR_INDEX  8   // Index to address bytes in RFConfig.buf
#define ADDR_COUNT  4   // Number of address bytes

const RFConfig txconf =
{
    15,
    0x08, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x12, 0x34, 0x56, 0x78, 0x83, 0x6c, 0x04
};

const RFConfig rxconf =
{
    15,
    0x08, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x87, 0x65, 0x43, 0x21, 0x83, 0x6c, 0x05
};



// LED is to be connected to this pin
sbit LED_pin = P1^0;


// Function prototypes
void DELAY_LOOP_Wait(const unsigned int);
void DELAY_100us(volatile unsigned char n);
unsigned char SPI_ReadWrite(unsigned char b);
unsigned char RECEIVE_Packet();
void RECEIVER(void);
void LED_Flash();
void INIT(void);



/*..................................................................*/


void main(void)
{
                INIT();

          while(1)
          {
                TRANSMITTER();
            RECEIVER();


      }



}


/*------------------------------------------------------------------*-

  DELAY_LOOP_Wait()

-*------------------------------------------------------------------*/

void DELAY_LOOP_Wait(const unsigned int DELAY)
   {
   unsigned int x, y;

   for (x = 0; x <= DELAY; x++)
      {
      for (y = 0; y <= 800; y++);
      }
   }


/*------------------------------------------------------------------*-

  LED_FLASH()

-*------------------------------------------------------------------*/

void LED_Flash()
{
        do
        {
                LED_pin = 0;
                DELAY_LOOP_Wait(1000);
                LED_pin = 1;
                DELAY_LOOP_Wait(1000);
        }  while(1);
}

/*------------------------------------------------------------------*-

  DELAY_100us()

-*------------------------------------------------------------------*/

void DELAY_100us(volatile unsigned char n)
{
    unsigned char i;
    while(n--)
        for(i=0;i<35;i++)
            ;
}

/*------------------------------------------------------------------*-

  SPI_ReadWrite()

-*------------------------------------------------------------------*/

unsigned char SPI_ReadWrite(unsigned char b)
{
    EXIF &= ~0x20;                  // Clear SPI interrupt
    SPI_DATA = b;                   // Move byte to send to SPI data register
   while((EXIF & 0x20) == 0x00)    // Wait until SPI hs finished transmitting
        ;
    return SPI_DATA;
}

/*------------------------------------------------------------------*-

  TRANSMIT_Packet()

-*------------------------------------------------------------------*/

void TRANSMIT_Packet(unsigned char b)
{
    unsigned char i;
    CE = 1;
    DELAY_100us(0);
    // Start with the address of the receiver:
    for(i=0;i<ADDR_COUNT;i++)
        SPI_ReadWrite(rxconf.buf[ADDR_INDEX+i]);
    SPI_ReadWrite(b);
    CE = 0;
    DELAY_100us(3);                  // Wait ~300us
}



/*------------------------------------------------------------------*-

  RECEIVE_Packet()

-*------------------------------------------------------------------*/

unsigned char RECEIVE_Packet()
{
    unsigned char b;
    CE = 1;
    while(DR1 == 0)
        ;
    b = SPI_ReadWrite(0);
    CE = 0;
    return b;


}



/*------------------------------------------------------------------*-

  RECEIVER()

-*------------------------------------------------------------------*/

void RECEIVER(void)
{
    unsigned char b, bo, err;
    CS = 1;
    DELAY_100us(0);
    for(b=0;b<rxconf.n;b++)
    {
        SPI_ReadWrite(rxconf.buf[b]);
    }
    CS = 0;
        bo = err = 0;
    for(;;)
    {
        b = RECEIVE_Packet();
                LED_Flash();
    }
}


 /*------------------------------------------------------------------*-

  TRANSMITTER()

-*------------------------------------------------------------------*/

void TRANSMITTER(void)
{
    unsigned char b;
    CS = 1;
    DELAY_100us(0);
    for(b=0;b<txconf.n;b++)
    {
        SPI_ReadWrite(txconf.buf[b]);
    }
    CS = 0;
    for(;;)
    {
        //b = ReadADC();              // Read ADC
       TRANSMIT_Packet(b);          // Transmit data
        }
}

void INIT(void)
{
        P1_DIR = 0;
    PWR_UP = 1;                     // Turn on Radio
    DELAY_100us(30);                // Wait > 3ms
    SPICLK = 0;                     // Max SPI clock (XTAL/8)
    SPI_CTRL = 0x02;                // Connect internal SPI controller to Radio

}

 RE: Wireless 8051 problems

sorry mistake in above text, should be like this:

void main(void)
{
                INIT();

          while(1)
          {
            RECEIVER();


      }
}

 RE: Wireless 8051 problems

Hello Leigh, I'm trying to blink a led in the nRF24e1 also but so far no success. Could you please check my code to see if I'm forgetting something?

sfr P0_DIR    = 0x94;
sfr P0_ALT    = 0x95;

org 00h
jmp INICIO

org 33h
INICIO: call delay
        mov P0_ALT, #00h
        mov P0_DIR, #01h
        mov P0, #00h

volta:  setb P0.7
        call delay
        clr P0.7
        call delay
        setb P0.6
        call delay
        clr P0.6
        call delay
        jmp volta

delay:  mov R0, #0FFh
delay3: mov R1, #0FFh
delay2: mov R2, #0FFh
        djnz R2, $
        djnz R1, delay2
        djnz R0, delay3
        ret
end

feel free to contact me in my email: gustavo79@gmail.com

I'd appreciate your help.