原创 zlg7289a

#include <intrins.h>
#include <reg52.h>
#include "zlg7289a.h"

//fosc:22.1184MHz, 1个指令周期0.5425us

/*
T1 从CS下降沿至CLK脉冲时间: 50uS
T2 传送指令时CLK脉冲宽度: 8uS
T3 字节传送中CLK脉冲时间间隔: 8uS
T4 指令与数据时间间隔:25uS
T5 读键盘指令中指令与输出数据时间间隔:25uS
T6 输出键盘数据建立时间: 8uS
T7 读键盘数据时CLK脉冲宽度: 8uS
T8 读键盘数据完成后DATA转为输入状态时间: 5uS
*/

sfr P4 = 0x0E8;

sbit ZLG7289A_CS = P1^1;
sbit ZLG7289A_CLK = P2^5;
sbit ZLG7289A_DATA = P1^0;

void zlg7289a_out_byte(unsigned char byte)
{
 unsigned char temp, temp1, temp2;

 temp = byte;
 ZLG7289A_CLK = 0;
 temp1 = 8;
 EA=0;
 while(temp1--)
 {
  temp <<= 1;
  ZLG7289A_DATA = CY;
  temp2 = 12;
  while(--temp2);
  ZLG7289A_CLK = 1;
  temp2 = 12;
  while(--temp2);
  ZLG7289A_CLK = 0;
 }
 EA=1;
}

unsigned char zlg7289a_in_byte(void)
{
 unsigned char temp, temp1;
 unsigned char ret;

 temp = 8;
 ret = 0;
 ZLG7289A_CLK = 0;
 while(temp--)
 {
  ZLG7289A_CLK = 1;
  ret <<= 1;
  temp1 = 10;
  while(temp1--)
  {
   _nop_();
  }
  ZLG7289A_CLK = 0;
  if(ZLG7289A_DATA)
  {
   ret++;
  }
 }

 return ret;
}

void zlg7289a_reset(void)
{
 ZLG7289A_CS = 0;
 zlg7289a_out_byte(ZLG7289A_RESET);
 ZLG7289A_CS = 1;
}

void zlg7289a_test(void)
{
//unsigned char i;

 //ZLG7289A_CS = 0;
    //for(i=0;i<50;i++);
 //zlg7289a_out_byte(ZLG7289A_TEST);
/*
 zlg7289a_out_byte(0x90);
 zlg7289a_out_byte(0xff);
 zlg7289a_out_byte(0x91);
 zlg7289a_out_byte(0xff);
 zlg7289a_out_byte(0x92);
 zlg7289a_out_byte(0xff);
 zlg7289a_out_byte(0x93);
 zlg7289a_out_byte(0xff);
 zlg7289a_out_byte(0x94);
 zlg7289a_out_byte(0xff);
 zlg7289a_out_byte(0x95);
 zlg7289a_out_byte(0xff);
 zlg7289a_out_byte(0x96);
 zlg7289a_out_byte(0xff);
 zlg7289a_out_byte(0x97);
 zlg7289a_out_byte(0xff);
*/
 zlg7289a_load_2(0, 0xFF);
 zlg7289a_load_2(1, 0xFF);
 zlg7289a_load_2(2, 0xFF);
 zlg7289a_load_2(3, 0xFF);
 //zlg7289a_load_2(4, 0xFF);
 //zlg7289a_load_2(5, 0xFF);
 //zlg7289a_load_2(6, 0xFF);
 //zlg7289a_load_2(7, 0xFF);

// ZLG7289A_CS = 1;
}

void zlg7289a_load_0(unsigned char address, unsigned char show_data, unsigned char DP)
{
 unsigned char temp;

 ZLG7289A_CS = 0;
 temp = (address & 0x07);
 temp |= ZLG7289A_LOAD_DATA_0;
 zlg7289a_out_byte(temp);
 temp = show_data & 0x0F;
 if(DP)
 {
  temp |= 0x80;
 }
 zlg7289a_out_byte(temp);
 ZLG7289A_CS = 1;
}

void zlg7289a_load_1(unsigned char address, unsigned char show_data, unsigned char DP)
{
 unsigned char temp;

 ZLG7289A_CS = 0;
 temp = address & 0x07;
 temp |= ZLG7289A_LOAD_DATA_1;
 zlg7289a_out_byte(temp);
 temp = show_data & 0x0F;
 if(DP)
 {
  temp |= 0x80;
 }
 zlg7289a_out_byte(temp);
 ZLG7289A_CS = 1;
}
void zlg7289a_load_2(unsigned char address, unsigned char show_data)
{
 unsigned char temp;

 temp = address & 0x07;
 temp |= ZLG7289A_LOAD_DATA_2;
 ZLG7289A_CS = 0;
 zlg7289a_out_byte(temp);
 zlg7289a_out_byte(show_data);
 ZLG7289A_CS = 1;
}

void zlg7289a_flash(unsigned char show_data)
{
 ZLG7289A_CS = 0;
 zlg7289a_out_byte(ZLG7289A_FLASH);
 zlg7289a_out_byte(show_data);
 ZLG7289A_CS = 1;
}

void zlg7289a_show(unsigned char show_data)
{
 if(show_data == 0)
 {
  return ;
 }
 ZLG7289A_CS = 0;
 zlg7289a_out_byte(ZLG7289A_HIDE);
 zlg7289a_out_byte(show_data);
 ZLG7289A_CS = 1;
}

void zlg7289a_segment_on(unsigned char show_data)
{
 ZLG7289A_CS = 0;
 zlg7289a_out_byte(ZLG7289A_SEGMENT_ON);
 show_data &= 0x3F;
 zlg7289a_out_byte(show_data);
 ZLG7289A_CS = 1;
}

void zlg7289a_segment_off(unsigned char show_data)
{
 ZLG7289A_CS = 0;
 zlg7289a_out_byte(ZLG7289A_SEGMENT_OFF);
 show_data &= 0x3F;
 zlg7289a_out_byte(show_data);
 ZLG7289A_CS = 1;
}

/*
unsigned char zlg7289a_read_key(void)
{
 unsigned char ret;

 ZLG7289A_CS = 0;
 zlg7289a_out_byte(ZLG7289A_READ_KEY);
 ZLG7289A_DATA = 1;
 ret = zlg7289a_in_byte();
 ZLG7289A_CS = 1;

 return ret;
}
*/