#define LATCH_DIO 4
#define CLK_DIO 7
#define DATA_DIO 8
const byte SEGMENT_MAP[] = {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0X80,0X90};
const byte SEGMENT_SELECT[] = {0xF1,0xF2,0xF4,0xF8};
unsigned long Cur_ms_Count;
unsigned long Last_ms_Count;
int Count;
void setup ()
{
pinMode(LATCH_DIO,OUTPUT);
pinMode(CLK_DIO,OUTPUT);
pinMode(DATA_DIO,OUTPUT);
Cur_ms_Count = millis();
Last_ms_Count = 0;
Count = 0;
}
void loop()
{
Cur_ms_Count = millis();
if(Cur_ms_Count - Last_ms_Count > 100)
{
Last_ms_Count = Cur_ms_Count;
if(Count < 9999)
{
Count++;
} else
{
Count = 0;
}
}
WriteNumber(Count);
}
void WriteNumber(int Number)
{
WriteNumberToSegment(0 , Number / 1000);
WriteNumberToSegment(1 , (Number / 100) % 10);
WriteNumberToSegment(2 , (Number / 10) % 10);
WriteNumberToSegment(3 , Number % 10);
}
void WriteNumberToSegment(byte Segment, byte Value)
{
digitalWrite(LATCH_DIO,LOW);
shiftOut(DATA_DIO, CLK_DIO, MSBFIRST, SEGMENT_MAP[Value]);
shiftOut(DATA_DIO, CLK_DIO, MSBFIRST, SEGMENT_SELECT[Segment] );
digitalWrite(LATCH_DIO,HIGH);
}
