【51单片机快速入门指南】2.2：任意位/任意长度数码管显示数字、小数
目录
- 源码
-
- Tube.c
- Tube.h
- main.c
- 效果
-
- 8位数码管
-
- 正整数
- 负整数
- 正小数
- 负小数
- 6位数码管
-
- 正整数
- 负整数
- 正小数
- 负小数
- 4位数码管
-
- 正整数
- 负整数
- 正小数
- 负小数
普中51-单核-A2
STC89C52
Keil uVision V5.29.0.0
PK51 Prof.Developers Kit Version:9.60.0.0
源码
移植时主要只修改Tube_Num数量、位选函数Tube_Choose()和单个数码管写入函数Singe_Tube_Write()即可。
数码管基础知识见【51单片机快速入门指南】2.1：数码管显示数字、小数 (科学计数法)
stdint.h内容见【51单片机快速入门指南】一、基础知识和工程创建
Tube.c
#include Tube.h
#ifndef TUBE_H_
#define TUBE_H_
#define Tube_Code_NULL 0x00
#define Tube_Code_0 0x3f
#define Tube_Code_1 0x06
#define Tube_Code_2 0x5b
#define Tube_Code_3 0x4f
#define Tube_Code_4 0x66
#define Tube_Code_5 0x6d
#define Tube_Code_6 0x7d
#define Tube_Code_7 0x07
#define Tube_Code_8 0x7f
#define Tube_Code_9 0x6f
#define Tube_Code_A 0x77
#define Tube_Code_b 0x7c
#define Tube_Code_C 0x39
#define Tube_Code_c 0x58
#define Tube_Code_d 0x5e
#define Tube_Code_E 0x79
#define Tube_Code_F 0x71
#define Tube_Code_G 0x3d
#define Tube_Code_H 0x76
#define Tube_Code_I 0x30
#define Tube_Code_i 0x10
#define Tube_Code_J 0x0e
#define Tube_Code_K 0x7a
#define Tube_Code_L 0x38
#define Tube_Code_M 0x55
#define Tube_Code_n 0x54
#define Tube_Code_o 0x5c
#define Tube_Code_P 0x73
#define Tube_Code_q 0x67
#define Tube_Code_r 0x50
#define Tube_Code_S 0x64
#define Tube_Code_t 0x78
#define Tube_Code_U 0x3e
#define Tube_Code_u 0x1c
#define Tube_Code_v 0x62
#define Tube_Code_W 0x6a
#define Tube_Code_X 0x36
#define Tube_Code_y 0x6e
#define Tube_Code_Z 0x49
#define Tube_Code_Dot 0x80
#define Tube_Code_Negative_Sign 0x40
void Display_Int(int32_t Num);
void Display_Double(double Num);
void Display_Num(double Num);
#endif
main.c
#include 效果
8位数码管
#define Tube_Port P0
#define Tube_Num 8
sbit Tube_A0 = P2^2;
sbit Tube_A1 = P2^3;
sbit Tube_A2 = P2^4;
//位选
void Tube_Choose(uint8_t num)
{
Tube_A0 = (num & 1);
Tube_A1 = (num & 2) >> 1;
Tube_A2 = (num & 4) >> 2;
}
//显示的延时 400us @11.0592MHz
void LED_Tube_Delay()
{
unsigned char i;
_nop_();
i = 181;
while (--i);
}
//单个数码管写入数据
void Singe_Tube_Write(uint8_t Data)
{
Tube_Port = Data;
}
正整数
while(1)
{
Display_Num(23333);
}
负整数
while(1)
{
Display_Num(-123456);
}
正小数
while(1)
{
Display_Num(1.23456);
}
负小数
while(1)
{
Display_Num(-45.678987);
}
6位数码管
#define Tube_Port P0
#define Tube_Num 6
sbit SEG_DLE = P2^6;
sbit SEG_WLE = P2^7;
//位选
void Tube_Choose(uint8_t num)
{
SEG_DLE = 0;
SEG_WLE = 1;
Tube_Port = ~(0x20 >> num);
SEG_WLE = 0;
}
//显示的延时 400us @11.0592MHz
void LED_Tube_Delay()
{
unsigned char i;
_nop_();
i = 181;
while (--i);
}
void Singe_Tube_Write(uint8_t Data)
{
SEG_DLE = 1;
SEG_WLE = 0;
Tube_Port = Data;
SEG_DLE = 0;
}
正整数
while(1)
{
Display_Num(23333);
}
负整数
while(1)
{
Display_Num(-12);
}
正小数
while(1)
{
Display_Num(1.23456);
}
负小数
while(1)
{
Display_Num(-45.678987);
}
4位数码管
#define Tube_Port P0
#define Tube_Num 4
sbit Tube_Y0 = P1^0;
sbit Tube_Y1 = P1^1;
sbit Tube_Y2 = P1^2;
sbit Tube_Y3 = P1^3;
//位选
void Tube_Choose(uint8_t num)
{
switch(num)
{
case 0:
Tube_Y0 = 1;
Tube_Y1 = 0;
Tube_Y2 = 0;
Tube_Y3 = 0;
break;
case 1:
Tube_Y0 = 0;
Tube_Y1 = 1;
Tube_Y2 = 0;
Tube_Y3 = 0;
break;
case 2:
Tube_Y0 = 0;
Tube_Y1 = 0;
Tube_Y2 = 1;
Tube_Y3 = 0;
break;
case 3:
Tube_Y0 = 0;
Tube_Y1 = 0;
Tube_Y2 = 0;
Tube_Y3 = 1;
break;
}
}
//显示的延时 1ms @12MHz
void LED_Tube_Delay()
{
unsigned char i, j;
i = 2;
j = 239;
do
{
while (--j);
} while (--i);
}
void Singe_Tube_Write(uint8_t Data)
{
Tube_Port = Data;
}
正整数
while(1)
{
Display_Num(233);
}
负整数
while(1)
{
Display_Num(-12);
}
正小数
while(1)
{
Display_Num(1.23456);
}
负小数
while(1)
{
Display_Num(-45.678987);
}
