C Program Exchange User Entered Text Between 2 Modules

C Program Exchange User Entered Text Between 2 Modules

How to write a C Program to Exchange User Entered Text Between 2 Modules Compiles with the free version of CC5X in C Programming Language ?

Solution:


/*
   nRF2401 test code to run on the 24G demo board, V02, 
    This code will exchange user entered text between 2 modules.
    Compiles with the free version of CC5X.
*/
#define Clock_8MHz
#include "boot.h"
#include "xc8.h"
#include "stdint.h"
#pragma config |= 0x3F10 //Internal Oscillator, No WDT, MCLR Disabled



uint8_t data_array[10]; // maximo 10 bites de dados
uint8_t rf_address[5];  // maximo 5 bites de endereco

// variaveis programaveis definidas no inicio do main()
uint8_t tamanhodado; // tamanho em bites
uint8_t endereco[5]; // endereco
uint8_t tamanhoend; // tamanho endereco em bites;
uint8_t canal; // canal usado


void boot_up(void);
void configure_transmitter(void);
void transmit_data(void);
void delay_ms(uint16_t);

void main()
{
    uint8_t x;

    boot_up();

// definicoes programaveis
tamanhodado=1;
endereco[3]=0x00; // address 21482 (transmissor teste)
endereco[2]=0x00;
endereco[1]=0x0B;
endereco[0]=0xC3;
tamanhoend=4; 
canal=15; //2.4(15 = canal) GHz
   
// apenas indicando que foi ligado
    for (x = 0; x < 3; x++) 
    { 
        LED1 = 1;
        delay_ms(25);
        LED1 = 0;
        LED2 = 1;
        delay_ms(25);
        LED2 = 0;
    }

    configure_transmitter();

    while(1) 
    {  
        LED1=botao;
  if(botao==0) data_array[0]=0x00; 
        else data_array[0]=0xFF;
        transmit_data();
  LED2=!LED2;
        delay_ms(25);
    }
}

void transmit_data(void)
{
    uint8_t i, j, temp,j1;
    CE = 1;

    //Clock in address na ordem do mais significativo para o menos
    for(j=0; j < tamanhoend ; j++)
     {  j1=tamanhoend-j-1;
  temp=endereco[j1];
  for(i = 0 ; i < 8 ; i++)
       { DATA1 = temp.7;
           CLK1 = 1;
           CLK1 = 0;       
           temp <<= 1;
   }
     }

    //Clock in the data_array na ordem do mais significativo para o menor
    for(j=0;j<tamanhodado;j++)
 {     j1=tamanhodado-j-1;
  temp = data_array[j1];
     for(i = 0 ; i < 8 ; i++) 
  { DATA1 = temp.7;
            CLK1 = 1;
            CLK1 = 0;
            temp <<= 1;
         }
 }
 
   CE = 0; //Start transmission 

   delay_ms(1);

}

// para controlar o canal e o tamanho da informa??o...
//2.4G Configuration - Transmitter
//This sets up one RF-24G for shockburst transmission
void configure_transmitter(void)
{
    uint8_t i, j, temp, temp1;
    uint8_t config_setup[14];

    //Config Mode
    CE = 0; 
    CS = 1;
    
//Setup configuration array
//===================================================================
//Data bits 111-104 data width on channel 1 (excluding CRC and adrs) is 32, mudado para 8
// definicao dos bits de configuracao no manual da NORDIC
    config_setup[0] = tamanhodado<<3;  // bits 111-104

    // como esta eh a configuracao do transmissor, os enderecos e o 
    // address width abaixo nao interessam serao postos em zero... jv set 08

    //Data bits 103-64 Channel 2 address - we don't care, set it to 200 
    config_setup[1] = 0;  // bits 103-96
    config_setup[2] = 0;  // bits 95-88
    config_setup[3] = 0;  // bits 87-80
    config_setup[4] = 0;  // bits 79-72
    config_setup[5] = 200; // bits 71-64

    //Data bits 63-24 Channel 1 address - set it to 21482, conforme projeto
    config_setup[6] = endereco[4];   // bits 63-56
    config_setup[7] = endereco[3];   // bits 55-48
    config_setup[8] = endereco[2];   // bits 47-40
    config_setup[9] =  endereco[1];   // bits 39-32
    config_setup[10] = endereco[0]; // bits 31-24
    
    
    //Data bits 23-16 Address width and CRC (11 para enable e 16bits)
    config_setup[11] = tamanhoend<<5;  // bits 23-16 (aqui eh bits e deslocado)
    config_setup[11] +=3;  // bits 23-16 (aqui eh bits e deslocado)
    
    //Data bits 15-8 , potencia 0dBm
    config_setup[12] = 0b.0110.1111;   // bits 15-8
    
    //Data bits 7-0  // canal 2461 => 61 nos bits de 1 a 7 = 0111101
    config_setup[13] = canal<<1;   // bits 7-0


    //===================================================================

    //Clock in configuration data
    for(i = 0 ; i < 14 ; i++)
    {
        temp = config_setup[i];
        
        for(j = 0 ; j < 8 ; j++)
        {   
            DATA1 = temp.7;
            CLK1 = 1;
            CLK1 = 0;
            temp <<= 1;
        }
    }
    //Configuration is actived on falling edge of CS (page 10)
    CE = 0; 
    CS = 0;
}


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