File content as of revision 0:77ff72005133:

#include "mbed.h"       //mbed Library
#include <iostream>
using namespace std;
#include <bitset>

#define ENDL "\r" << endl;
#define START_ADDRESS 0x020;

//SPI

SPI adf(PTD6, PTD7, PTD5);   //SPI Pin names in mbed
        //MOSI, MISO, CLOCK

DigitalOut CS(D10);         //CS = chip select or slave select
Serial PC(USBTX, USBRX);    //Serial Connection to PC Through USB port
DigitalOut ledr(LED_RED);   //Blinking of LED for confirming the compilation of code

DigitalIn clk(D8);          //DigitalIn is used to poll the value of the clock
DigitalOut DT(D9);          //Declaration of the pin

int j=0;                    //Variable counting the bytes transmitted

#define SPI_NOP 0xFF

//Data that is to be transmitted
unsigned char data_TX [] = {0x65,0xD3,0x06,0x08,0xBB,0xE7,0xCD,0x16,0x65,0xD3,0x06,0x08,0xBB,0xE7,0xCD,0x16,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0x20,0xE5,0xEE,0x00,0xEB,0x3D,0x35,0x66,0xDC,0xDA,0x33,0xA1,0x80,0x62,0xB7,0xB8,0x88,0x8A,0xCE,0x99,0x18,0xFA,0x24,0x42,0xD1,0x7C,0x2D,0x0E,0x72,0x9E,0xE9,0x7C,0xF9,0xBA,0x18,0xAA,0x4B,0xEC,0x7C,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0x20,0xE5,0xEE,0x00,0xCC,0xB3,0xB2,0x5B,0x96,0x38,0x71,0x96,0x54,0xE2,0x4A,0x7F,0xC9,0xB7,0x1E,0x56,0x09,0x30,0x18,0x5A,0x84,0xFA,0xC1,0x9D,0xA6,0x6A,0x17,0x50,0x6F,0xD4,0x34,0x1D,0xF0,0xE0,0xE2,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0x20,0xE5,0xEE,0x00,0x78,0xC9,0x9A,0x09,0xE2,0x34,0xF9,0x39,0x61,0x36,0x9C,0xC2,0x98,0xB9,0x54,0xC0,0xDC,0xE6,0x90,0xF6,0xF6,0x88,0xD1,0xA5,0x5A,0x75,0x83,0x78,0x08,0xD6,0x9D,0xDE,0xB8,0x58,0xD4,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0x20,0xE5,0xEE,0x00,0x13,0x3F,0x78,0xD9,0x4E,0xB7,0xE8,0xD6,0x0D,0x1E,0xF1,0xC4,0xB9,0xAB,0x90,0x39,0x6A,0x9E,0x8A,0xB8,0xC9,0xAF,0x5E,0x85,0x66,0xBF,0x4E,0xB3,0xD3,0x54,0x9B,0x7D,0xA3,0x3A,0x1A,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0x20,0xE5,0xEE,0x00,0x81,0x83,0x7B,0x88,0x8A,0xAB,0x31,0x91,0x8F,0xA0,0x91,0x05,0x17,0xC2,0xD2,0xB9,0xC1,0xEE,0x97,0xCE,0x66,0xE9,0x8A,0xA4,0xBC,0xB1,0xFC,0xCB,0x3B,0x24,0x6E,0x5B,0x87,0x19,0x64,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x97,0x4C,0x18,0x22,0xEF,0x9F,0x34,0x59,0x97,0x4C,0x18,0x22,0xEF,0x9F,0x34,0x58,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x97,0x4C,0x18,0x22,0xEF,0x9F,0x34,0x59,0x97,0x4C,0x18,0x22,0xEF,0x9F,0x34,0x58,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; 


//Note : A delay of 2 microseconds is given to ensure ADF7023 detects the CS = 'High' state and execute the command given.
//wait_us(2); ensures delay of  2 microseconds



void send_data()
    {


    static int current_bit = 7;
    
    DT = (data_TX[j] >> current_bit) & 1;   //if current bit == 1 then DT = High else DT = Low
    --current_bit;                          //Next Bit
    
    if(current_bit == -1){                  //If all 8 bits are transmitted. then go to next byte
        current_bit = 7;                    //Going to the bit [0]
        j++;
        

        if(j>=sizeof(data_TX))             
        {
//            j=0;                          // In case repeatation of data is required
        adf.write(0xB1);                    // Stops transmitting and reaches PHY_ON State (when repeatation is not required)
      }
    }
}




//BBRAM Sequence
//

void write_bbram_sequence(void){
   
    adf.write(0x19);        //SPI_MEM_WR  SPI Block Write BBRAM 
    adf.write(0x00);        //Starting Address (0x100)
    adf.write(0x00);        //Data on 0x100 -- Interrupt_Mask Register -- As no Interrupt is required Value == 0x00
    adf.write(0x00);        //Interrupt_Mask_1 No interrupts Required
   
    adf.write(0x00);        // For details of other registers Please refer page 90-100 in  ADF7023 Datasheet
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
   
    adf.write(0x00);
    adf.write(0x33);
    adf.write(0x00);
    adf.write(0xF9);        //BBRAm Register Corresponding to the frequency
   
    adf.write(0xC2);
    adf.write(0x10);
    adf.write(0xC0);   
    adf.write(0x00);
   
    adf.write(0x30);
    adf.write(0x31);
    adf.write(0x07);   
    adf.write(0x00);
       
    adf.write(0x01);
    adf.write(0x00);
    adf.write(0x7F);
    adf.write(0x00);
   
    adf.write(0x0B);
    adf.write(0x37);
    adf.write(0x00);   
    adf.write(0x00);
    adf.write(0x40);
    adf.write(0x0C);
    adf.write(0x00);
    adf.write(0x05);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x18);
    adf.write(0x12);
    adf.write(0x34);
    adf.write(0x56);
    adf.write(0x10);
    adf.write(0x10);
    adf.write(0x08);
    adf.write(0x14);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x04);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    adf.write(0x00);
    
    }
   
    void initiate(void){      
        
        CS=0;                       //ADF023 and mbed SPI is active low and ADF7023 samples at rising edge   mode  = 0;
        adf.write(0x1B);    
        adf.write(0xFA);
        adf.write(0xA0);
        CS=1;                       // SPI goes to High impedence State
        wait_us(2);
       
        CS=0;                       //Chip Select = low implies Chip is selected SPI is enabled
        adf.write(0x18);
        adf.write(0x0D);
        adf.write(0x00);
        CS=1;                       //Chip select == high . Chip goes to High impedence state
        wait_us(2);
        
//        ADF7023 is now configured to SPORT MODE

        CS=0;
        adf.write(0xB0);            //In order to write BBRAM Sequence we need to change the state to PHY_OFF state
        CS=1;
        wait_us(600);
        
        CS=0;
        write_bbram_sequence();     //BBRAM_SEQUENCE Contains all data that is required to configure the Radio
        CS=1;
        wait_us(2);
       
        CS=0;
        adf.write(0xFF);            //0xFF is the Dummy Byte Provides required time for ADF to get ready to accept command
        adf.write(0xFF);            
        CS=1;
        wait_us(2);
        
        CS=0;
        adf.write(0xFF);
        adf.write(0xFF);
        CS=1;
        wait_us(2);
       
              
        CS=0;
        adf.write(0xBB);// CONFIGURE_DEV  Configures the radio according to the bbram Sequence Except the transmission frequency
        CS=1;
        wait_us(2);     // Approx time required for state transition
       
        CS=0;
        adf.write(0xB1);//PHY_ON  Turns on the radio
        CS=1;
        wait_us(2);
       
        CS=0;
        adf.write(0xB5);//PHY_TX    Sets Transmission Frequency according to bbram and starts transmitting
        CS=1;
        wait_us(600);     //Maximum time required for ADF7023 for the above State transmission . Tested in Space Lab condition
     }


         

int main(){
   
    
    CS = 1;                         // Chip Select == low  Enabling the SPI
    adf.format(8,0);                // SPI interfaces in 8 bit pattern ,SPI Mode = 0 
    adf.frequency( 1000000 );       // SPI Frequency = 1 MHz
   
    cout << "Press s" << ENDL;      // The following code upto 6 lines are used to ensure the data is transmitted at the required time
    ledr = 1;
    char c = 'a';                   //Initialising the variable
    
    while( c != 's'){
        c = PC.getc();
        PC.putc(c);
    }
    ledr = 0;
       
    initiate();                     // Initiates the Radio to Sport Mode and starts transmitting
    
    int state;                      // The datarate in which we are testing is half the Clockrate 
                                    // We are using the variable 'state' to ensure the data is sampled in alternative rising edge
    
    if(clk == 0){                   // Initialising the State of the clock
        state = 0;
    }
    else{
        state = 1;
    }
    
    while(true){                     // Polling
        if(clk == 0){
            if(state == 1){
                state = 0;
                send_data();            
            }
        }
        else{                           //As data is sampled in alternating rising edge in ADF7023 this ensures that the Data changes accordingly
            state = 1;
        }
    }
}