//-------------------------------------------------------------------------------TM1638.c-------------------------------------------------------------------
#include "TM1638.h"
#include "stdint.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
const uint8_t tab2[] = {0x3F,0x06,0x5B,0x4F,
0x66,0x6D,0x7D,0x07,
0x7F,0x6F,0x77,0x7C,
0x39,0x5E,0x79,0x71};
#define ADD 10
#define MINUS 11
#define EQUAL 12
#define CLEAR 13
#define PLUS 14
#define DIVIDE 15
unsigned int flag;
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
void TM1638_Write(unsigned char DATA) //写数据函数
{
unsigned char i;
DIO_OUT;
for(i=0;i<8;i++)
{
CLK_low;
if(DATA & 0x01){
DIO_high;
}else{
DIO_low;
}
CLK_high;
DATA>>=1;
}
}
unsigned char TM1638_Read(void) //读数据函数
{
unsigned char i;
unsigned char temp=0;
DIO_IN;
STB_low;
for(i=0;i<8;i++)
{
temp>>=1;
CLK_low;
_delay_us(100);
if(DIO_READ)
temp |= 0x80;
else
temp &= 0x7f;
CLK_high;
}
return temp;
}
void Write_COM(unsigned char cmd) //发送命令字
{
CLK_high;
STB_high;
STB_low;
TM1638_Write(cmd);
STB_high;
}
/*!
*函数功能：读取按键值
*输入参数：无
*输出参数：无
*返回值： 无
*/
unsigned char Read_key(void)
{
unsigned char c[4];
unsigned int key_value=0x00;
unsigned int i;
STB_high;
STB_low;
TM1638_Write(0x42);
_delay_us(1);
for(i=0;i<4;i++)
c[i]=TM1638_Read();
STB_high;
if(c[0]&BIT2)
{
key_value |= BIT1;
}
else if(c[0]&BIT6)
{
key_value |= BIT4;
}
else if(c[0]&BIT0)
{
key_value |= BIT2;
}
else if(c[0]&BIT1)
{
key_value |= BIT3;
}
else if(c[0]&BIT5)
{
key_value |= BIT6;
}
else if(c[0]&BIT4)
{
key_value |= BIT5;
}
else if(c[1]&BIT0)
{
key_value |= BITB;
}
else if(c[1]&BIT4)
{
key_value |= BITC;
}
else if(c[1]&BIT1)
{
key_value |= BITA;
}
else if(c[2]&BIT0)
{
key_value |= BITD;
}
else if(c[2]&BIT4)
{
key_value |= BIT8;
}
else if(c[2]&BIT5)
{
key_value |= BIT9;
}
else if(c[2]&BIT6)
{
key_value |= BIT7;
}
//-----------------------
else if(c[3]&BIT0)
{
key_value |= BITF;
}
else if(c[3]&BIT1)
{
key_value |= BITE;
}
else if(c[3]&BIT2)
{
key_value |= BIT0;
}
//////////////////////////////////////////////
//特殊符号‘AC’ ‘+’ ‘-’ ‘=’
else if(c[1]&BIT2)
{
flag<=CLEAR;
Write_allLED(0);//按下AC，清除所有显示
}
else if(c[1]&BIT6)
{
flag<=ADD;//按下+，清除所有显示
}
else if(c[2]&BIT1)
{
flag<=EQUAL;//按下=，清除所有显示
}
else if(c[2]&BIT2)
{
flag<=MINUS;//按下-，清除所有显示
}
/////////////////////////////////////
for(i=0;i<16;i++)
if((0x01<<i)==key_value)
break;
return i;
}
void Write_DATA(unsigned char add,unsigned char DATA) //指定地址写入数据
{
Write_COM(0x44);
STB_low;
TM1638_Write(0xc0|add);
TM1638_Write(DATA);
STB_high;
}
void init_TM1638(void)
{
Write_allLED(0xff);
_delay_ms(100);
Write_allLED(0);
}
void Write_allLED(unsigned char DATA){
unsigned char i;
Write_COM(0x8F);//显示控制
Write_COM(0x40); //数据命令
STB_low;
TM1638_Write(0xc0);
for(i=0;i<16;i++)
TM1638_Write(DATA);
STB_high;
}
//---------------------------------------------------------------------------TM1638.h------------------------------------------------------------------------------
#ifndef _TM1638_H
#define _TM1638_H
#include "msp430f6638.h"
#include <stdint.h>
#define CPU_F ((double)20000000)
#define _delay_us(x) __delay_cycles((long)(CPU_F*(double)x/1000000.0))
#define _delay_ms(x) __delay_cycles((long)(CPU_F*(double)x/1000.0))
#define DIO_high (P3OUT |= BIT5)
#define DIO_low (P3OUT &= ~BIT5)
#define CLK_high (P3OUT |= BIT4)
#define CLK_low (P3OUT &= ~BIT4)
#define STB_high (P3OUT |= BIT2)
#define STB_low (P3OUT &= ~BIT2)
#define DIO_IN (P3DIR &= ~BIT5) //输入状态
#define DIO_OUT (P3DIR |= BIT5) //输出状态
#define DIO_READ (P3IN & BIT5) //读引脚电平
void TM1638_Write(unsigned char DATA); //写数据函数
unsigned char TM1638_Read(void); //读数据函数
void Write_COM(unsigned char cmd); //发送命令字
unsigned char Read_key(void);
void Write_DATA(unsigned char add,unsigned char DATA); //指定地址写入数据
void Write_allLED(unsigned char flag); //控制全部LED函数，flag表示LED状态
void init_TM1638(void);
#endif
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