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SPI Master Slave Communication

I am into a project where I need 2 establish communication between ADuc814(Master) and ADuc841(Slave). Master shud Receive data transmitted by Slave. I am unable to establish the comm. I feel there is no response 4rm slave as though master generates the clock and SS pin is low, slave does not response.
Is it necessary that both master and slave should operate in same CLOCK??
For Hardware connection, MOSI, MISO, SCLK and SS pins of Master and Slave are connected.
Foll is the code
Master Code

#include <ADUC814.H>
unsigned char Data[20]; //Store SPI Rx data in Memory
void Uart_Tx(unsigned char AsciData); //Serial Tx
sbit SS = 0xB5;
void main()
{
  char i;
  PLLCON = 0x00; //Core Clk = 16.6777MHz
 //////////baud 0f 4800////////
  RCAP2H = -1; RCAP2L = 0x92;
  TH2 = -1;    TL2 = 0x92;
  SCON = 0x50; T2CON = 0x34;
 //////////////////////////////

  CFG814 = 0x01; // Enable P3.5,6,7 for SPI
  SPICON = 0x37; // Master, CPOH=1,CPOL=0
  SS = 0; // Slave Select Enable
  for(i=0;i<20;i++)
  { SPIDAT = 0x00; // SPI Clock Generate
    while(!ISPI); ISPI = 0;
    Data[i] = (unsigned char)SPIDAT;
  }

 /////////Serial Tx SPI Data into UART//////////
  for(i=0;i<20;i++)
  { Uart_Tx(Data[i]); Uart_Tx('\n'); }
 /////////////////////////////////////////////
}

Slave Code, ADuC841

void main()
{ char i;
  SPICON = 0x24; // Slave, CPOH=1, CPOL=0
  for(i=0;i<20;i++)
  { SPIDAT = 0x38; /*Transmit Dummy Data, Asci of '8'
    while(!ISPI); ISPI = 0; }

}


Friendzzzz Please Help.........

Parents
  • "Thnxxxx"

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Reply
  • "Thnxxxx"

    That must have taken quite some effort -- adding three more X's than required. With so much extra effort, you have demonstrated your eagerness and a keen desire for the help you seek. It almost makes up for all the shortcuts you have posted and key information you have not posted.

    You have qualified for a free fortune cookie:

    "You will be equally rewarded for your efforts and you will become a rich man with many wives."

Children