Shift register Hc595

[alimemory]

Hi all
Can any help me with code
How to #define shift register
Using microc pro
I want get more outputs
thanks.

 

[FenTrac]

// connect 74HC595 reset to +5v, output enable to ground

char Dout = 0x55;            // Data to shift to 74HC595
int i;

sbit Data  at PORTB.B0;     // pin 14 74HC595   Serial Data input
sbit Sc_cp at PORTB.B1;   // pin 11 74HC595   Shift clock
sbit Tc_cp at PORTB.B2;   // pin 12 74HC595   Latch clock

void shift_out( char dat )
{
Tc_cp = 0;                // set latch clock to 0
for( i = 0; i < 8; i ++ )
  {
  Sc_cp = 0;              // set shift clock to 0
  Data = 0;                 //  set Data to 0
  if( (dat & 0x80) == 0x80)   // check if bit 7 is a 1
    Data = 1;               // if bit 7 is a 1, set Data to 1
  dat = (dat << 1);      // shift Data out bit 7 first
  Sc_cp= 1;               // clock Data into shift register
  }  
Tc_cp = 1;                // clock Data in shift register to 74HC595's outputs
}


void main()
{
  TRISB = 0x00;           // Configure PORTB as outputs
  shift_out(Dout);          // send 0x55 to 74HC595
  while(1){}
}

 

[KlausST]

Hi,

HC595 is discussed many times in this forum. Did you search for it?

Klaus