164 drive 8-bit LED display CVAVR program-EEWORLD

Collect

//164 driver digital tube display
//Chip ATMEGA16L
//Clock 4MHz internal
//Written in CVAVR, using the system's own delay function
//PD0 PD1 simulate 164 timing
#include
#include
#define hc164_data PORTD.0
#define hc164_clk PORTD.1
void led164_display (void); // Digital tube display
void hc164_send_byte (unsigned char byte);
unsigned char ledxs[8] = {1,2,3,4,5,6,7,8}; // Digital tube display buffer 1
unsigned char ledxs2[8] = {0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0,17}; // Digital tube display buffer 2
flash unsigned char tab[] = {0xb7,0x12,0x67,0x76,0xd2,0xf4,0xf5,0x16,0xf7,0xf6,0xd7,0xf1,0xa5,0x73,0xe5,0xc5,0,0xff};
                          //Common cathode code 0-F, all off, all on
void main(void)
{
delay_ms(200);
PORTD = 0xFF;
DDRD = 0xFF; //PD outputwhile
(1)
{
    led164_display ();
}
}
void hc164_send_byte (unsigned char byte)
{
unsigned char i;
   for(i=0;i<8;i++)
   {
      hc164_data = byte & ( 1 << i );
      hc164_clk = 1;
      hc164_clk = 0;
   }
}
void led164_display (void)
{
unsigned char i;
for(i=0;i<8;i++)
{
    hc164_send_byte ( tab[ ledxs[i] ]);
    delay_ms(1);

}
delay_ms(2000);
for(i=0;i<8;i++)
{
    hc164_send_byte ( tab[ ledxs2[i] ]);
    delay_ms(1);

delay_ms
(2000);
}

Reference address：164 drive 8-bit LED display CVAVR program

Previous article：CVAVR Program for TLC5615
Next article：12864 (with font library) serial mode display Chinese characters and font library - CVAVR program

Recommended ReadingLatest update time:2024-11-16 12:50

Using 74LS164 to drive digital tube

3. Training schedule (1) Morning of the first day: Assign tasks, divide into groups, and determine topics. (2) Afternoon and evening of the first day: Search for information to determine the solution, draw the system block diagram, hardware circuit diagram, and software flow chart. (3) The next morning: Component

[Microcontroller]

Popular Resources
Popular amplifiers