tlc549.c

程序是用52单片机对TLC549进行读写操作,已经过测试,欢迎大家一起探讨.

#include <reg51.h>

#define DISP_DLY  500
#define CMD_DLY  4
#define TLC_DLY  2

sbit TLC549_IOCLK = 0x95;
sbit TLC549_CS    = 0x96;
sbit TLC549_DOUT  = 0x94;
unsigned char TLC549_data;
unsigned char led_7seg[] = { 0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D,   /* 6  */
                            0x07, 0x7F, 0x6F, 0x77,0x7C, 0x39,0x5E, 0x79,   /* Ee */
                            0x71};
 
void Delay_n_us (unsigned char n_us)
{
    while (n_us--);
}

void disp_led(unsigned char dd,unsigned char addr1,unsigned char addr2)
{
    unsigned char temp;
    temp = (dd & 0x0F0) >> 4;
    P0 = led_7seg[temp];
    P2 = addr1;
    Delay_n_us (DISP_DLY);
    temp = dd & 0x0F;
    P0 = led_7seg[temp];
    P2 = addr2;
    Delay_n_us (DISP_DLY);
}

void TLC549_RD ( )
{
    unsigned char i;
    unsigned char temp;
    temp = TLC549_DOUT;
    TLC549_data = TLC549_data | temp;
    TLC549_data <<= 1;
    for ( i = 0; i < 7; i++ )
    {
        TLC549_IOCLK = 1;
        Delay_n_us (TLC_DLY);
        TLC549_IOCLK = 0;
        Delay_n_us (TLC_DLY);
        temp = TLC549_DOUT;
        TLC549_data = TLC549_data | temp;
        TLC549_data <<= 1;
    }
    TLC549_IOCLK = 1;
    Delay_n_us (TLC_DLY);
    TLC549_IOCLK = 0;
    Delay_n_us (TLC_DLY);
}

void main ()
{      
      unsigned char i;
      while (1)
      {
        TLC549_CS = 0;
        TLC549_RD ( );
        TLC549_CS = 1;
        Delay_n_us (CMD_DLY);
        TLC549_CS = 0;
        TLC549_RD ( );
        TLC549_CS = 1;
        i=100;
        while (i--)disp_led (TLC549_data, 0x08, 0x04);
      }
}