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*/
#define HC_DATA_H digitalWrite(data, HIGH) // data line output high
#define HC_DATA_L digitalWrite(data, LOW) //date line output low
#define HC_RCK_H digitalWrite(rck, HIGH) // rck output high
#define HC_RCK_L digitalWrite(rck, LOW) // rck output low
#define HC_SCK_H digitalWrite(sck, HIGH) // sck output high
#define HC_SCK_L digitalWrite(sck, LOW) // sck output low
unsigned char LED_BCD[16] ={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e }; //common anode digital tube BCD code
//Define the pin
int data =2;
int rck =3;
int sck =5;
// the setup routine runs once when you press reset:
void setup() {
// initialize the digital pin as an output.
pinMode(data, OUTPUT);
pinMode(rck, OUTPUT);
pinMode(sck, OUTPUT);
pinMode(sclr, OUTPUT);
}
// the loop routine runs over and over again forever:
void loop() {
unsigned char dopp =0;
for( unsigned char i=0; i < 4; ++i)
{
if(i ==3) dopp =1;
else dopp =0;
HC_data_analyze(i,i,dopp); //Nixie Tube display
}
}
void HC_data_analyze(char LED_number,unsigned char LED_display,unsigned char LED_dp)
{
// data analyse
unsigned int HC_DISP = 0,HC_LEDCODE,HC_LEDCODE_temp=0;
if(LED_display > 15) LED_display = 0;
HC_LEDCODE = LED_BCD[LED_display] ; //get BCD code
for(unsigned char i=0; i < 8;++i)
{
HC_LEDCODE_temp <<=1;
if(HC_LEDCODE&0x01) HC_LEDCODE_temp |= 0x01;
HC_LEDCODE >>=1;
}
if(LED_dp) HC_LEDCODE_temp &= 0xfe;
HC_DISP = HC_LEDCODE_temp;
switch(LED_number)
{
case 0: HC_DISP |= 0x8000;break;
case 1: HC_DISP |= 0x4000;break;
case 2: HC_DISP |= 0x2000;break;
case 3: HC_DISP |= 0x1000;break;
}
write_74HC595(HC_DISP); //74HC595 shifting register data transfer
}
void write_74HC595( unsigned int data_a) //communication with 74HC595
{
char look =0;
HC_RCK_L; //latch open
HC_SCK_L;
for (;look < 16; ++look)
{
if(data_a&0x0001) {HC_DATA_H;}
else {HC_DATA_L;}
HC_SCK_H;
HC_SCK_L;
data_a >>= 1;
}
HC_RCK_H;
}
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