LED Display/clock, no output, no compilation errors

Using Arduino Programming Questions
13

PeterH:
Will you post your actual code now, please? Your amended code in the first post is obviously not it. To avoid confusion/doubt I suggest you put it in a new post and not by amending the previous post.

Sure.

#define SECS_CS    46
#define MINS_CS    44
#define HOURS_CS   42
#define SDATA      22
#define SCLK       30
#define PPS        26
#define DP1        0x10000000
#define DP2        0x20000000

void setup(void)
{
pinMode(SECS_CS,OUTPUT);
pinMode(MINS_CS,OUTPUT);
pinMode(HOURS_CS,OUTPUT);
pinMode(SDATA,OUTPUT);
pinMode(SCLK,OUTPUT);
pinMode(PPS,INPUT);
digitalWrite(SECS_CS,1);
digitalWrite(MINS_CS,1);
digitalWrite(HOURS_CS,1);
digitalWrite(SDATA,0);
digitalWrite(SCLK,0);
}

void loop()
{
unsigned char secs=0;
unsigned char mins=0;
unsigned char hours=12;
unsigned char ampm=0;
int i;
long seg;
long segments[]={
0x200FC03F,
0x200FC006,
0x200FC0DB,
0x200FC0CF,
0x200FC0E6,
0x200FC0ED,
0x200FC0FD,
0x200FC007,
0x200FC0FF,
0x200FC0E7,
0x2001803F,
0x20018006,
0x200180DB,
0x200180CF,
0x200180E6,
0x200180ED,
0x200180FD,
0x20018007,
0x200180FF,
0x200180E7,
0x2036C006,
0x2036C0DB,
0x2036C0CF,
0x2036C0E6,
0x2036C0ED,
0x2036C0FD,
0x2036C007,
0x2036C0FF,
0x2036C0E7,
0x2036C006,
0x2033C03F,
0x2033C006,
0x2033C0DB,
0x2033C0CF,
0x2033C0E6,
0x2033C0ED,
0x2033C0FD,
0x2033C007,
0x2033C0FF,
0x2033C0E7,
0x2039803F,
0x20398006,
0x203980DB,
0x203980CF,
0x203980E6,
0x203980ED,
0x203980FD,
0x20398007,
0x203980FF,
0x203980E7,
0x203B403F,
0x203B4006,
0x203B40DB,
0x203B40CF,
0x203B40E6,
0x203B40ED,
0x203B40FD,
0x203B4007,
0x203B40FF,
0x203B40E7
};

  {
/*  while(digitalRead(PPS)) ; */
  delay(999);
  if(++secs>59)
	{
	secs=0;
	if(++mins>59)
		{
		mins=0;
		if(++hours>12)
			{
			hours=1;
			ampm^=1;
			}
		}
	}
  seg=(ampm)?  segments[secs] : (segments[secs]&~(DP2));  //turn off dp2 if ampm==0 (AM)
  writeLED(seg,SECS_CS);
  writeLED(segments[mins],MINS_CS);
  writeLED(segments[hours],HOURS_CS);
  }
}

void writeLED(long segword, int cs)
{
int i;
  
digitalWrite(cs,0);     //assert chip select  
  
digitalWrite(SCLK,0);
digitalWrite(SDATA,1);  //start bit
digitalWrite(SCLK,1);
digitalWrite(SCLK,0);

for(i=1; i!=0; i<<=1)
  {
  if(segword&i) digitalWrite(SDATA,1);
  else digitalWrite(SDATA,0);
  digitalWrite(SCLK,1);
  digitalWrite(SCLK,0);
  }

digitalWrite(SDATA,0);
for(i=0;i<4;i++)
  {
  digitalWrite(SCLK,1);
  digitalWrite(SCLK,0);
  }
digitalWrite(cs,1);     //chip select off
  
return;  
}