7seg_p-16

 unsigned int delay;

unsigned int Switchcount=0; 

unsigned int Disp[16]={0x003F0000, 0x00060000, 0x005B0000, 0x004F0000, 0x00660000,0x006D0000,

   0x007D0000, 0x00070000, 0x007F0000, 0x006F0000, 0x00770000,0x007C0000,

   0x00390000, 0x005E0000, 0x00790000, 0x00710000 };


#define SELDISP1 0x10000000     //P0.28

#define SELDISP2 0x20000000 //P0.29

#define SELDISP3 0x40000000 //P0.30

#define SELDISP4 0x80000000 //P0.31

#define ALLDISP  0xF0000000 //Select all display

#define DATAPORT 0x00FF0000 //P0.16 to P0.23 Data lines connected to drive Seven Segments


int main (void)

{

PINSEL0 = 0x00000000;   

PINSEL1 = 0x00000000;

IO0DIR  = 0xF0FF0000;

IO1DIR  = 0x00000000;

while(1)

{

IO0SET |= ALLDISP; // select all digits

IO0CLR = 0x00FF0000; // clear the data lines to 7-segment displays

IO0SET = Disp[Switchcount];     // get the 7-segment display value from the array

if(!(IO1PIN & 0x00800000))   // if the key is pressed 

{

for(delay=0;delay<100000;delay++) // delay   

  {}                                     

    if((IO1PIN & 0x00800000))   // check to see if key has been released

{

Switchcount++;

if(Switchcount == 0x10) // 0 to F has been displayed ? go back to 0

    {

   Switchcount = 0;

   IO0CLR  = 0xF0FF0000;

    }

}

}

}

}

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