热腾腾！16位LED数码管驱动芯片TM1640的驱动程序范例来咯~-电子产品世界论坛

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热腾腾！16位LED数码管驱动芯片TM1640的驱动程序范例来咯~

从小就是电子迷

工程师

2019-07-03 17:45:56 打赏

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/* *********

* File: tm1640.h

* Author: Administrator

* Created on 2015年11月23日, 下午6:14

#define TM1640Port (GPIOD->ODR)

#define TMSDA RC5

#define TMSCL RC4

/***************************TM1640显示缓冲区*********************************/

unsigned char led_buffer[11]={0,0,0,0,0,0,0,0, //8位数字缓冲区

0,0,0}; //18个灯缓冲区

/***************************************************************************/

//位选地址

#define DIG1 0xc0

#define DIG2 0xc1

#define DIG3 0xc2

#define DIG4 0xc3

#define DIG5 0xc4

#define DIG6 0xc5

#define DIG7 0xc6

#define DIG8 0xc7

#define DIG9 0xc8

#define DIG10 0xc9

#define DIG11 0xca

#define DIG12 0xcb

#define DIG13 0xcc

#define DIG14 0xcd

#define DIG15 0xce

#define DIG16 0xcf

//显示亮度级别

#define LEVEL_OFF 0x80

#define LEVEL_1 0x88

#define LEVEL_2 0x89

#define LEVEL_3 0x8a

#define LEVEL_4 0x8b

#define LEVEL_5 0x8c

#define LEVEL_6 0x8d

#define LEVEL_7 0x8e

#define LEVEL_8 0x8f

#define DATA_CMD_ADDR_INC 0x40 //地址自动加1

#define DATA_CMD_ADDR_FIXED 0x44 //固定地址

#define TM1640_DELAY NOP();NOP();

//点定义

#define V1DOT 31

#define V2DOT 23

#define V3DOT 15

#define DBM1DOT 63

#define DBM2DOT 55

#define DBM3DOT 47

#define LED_3MV 64

#define LED_30MV 65

#define LED_300MV 66

#define LED_3V 67

#define LED_30V 68

#define LED_300V 69

#define LED_AUTO 70

#define LED_MANU 71

#define LED_KEYDB 72

#define LED_KEYDBM 73

#define LED_CH1 74

#define LED_CH2 75

#define LED_UNITDBM 76

#define LED_UNITDB 77

#define LED_MV 78

#define LED_V 79

#define LED_OVER 80

#define LED_UNDER 81

//*********START***********************************************

void start() //1640开始

{

TMSDA=1;

TMSCL=1;

TM1640_DELAY;

TMSDA=0;

TM1640_DELAY;

TMSCL=0;

}

//**************************************************************

void stop() //1640结束

{

TMSDA=0;

TMSCL=1;

TM1640_DELAY;

TMSDA=1;

TM1640_DELAY;

TMSCL=1;

}

/*******向TM1640写字节***********/

void write(unsigned char date) //1640写字节

{

unsigned char i,aa;

aa=date;

for(i=0;i<8;i++)

{

TMSCL=0; TM1640_DELAY;

if(aa&0x01)

{

TMSDA=1;

}

else

{

TMSDA=0;

}

TM1640_DELAY;

TMSCL=1;

TM1640_DELAY;

aa=aa>>1;

TM1640_DELAY;

}

/*将TM1640显示缓冲区写入到芯片中*/

/*可能需要在语句间增加必要的延时*/

/*如果128个点全部用到，需要修改变量I的值*/

void flood_led_data(void)

{

unsigned int temp_data;

start();

write(DATA_CMD_ADDR_INC);//设置地址自动+1模式

stop();

start();

write(DIG1); //设置起始地址

for(unsigned char i=0;i<=11;i++)

{

temp_data = led_buffer[i];

write(temp_data);

}

stop();

}

/*向TM1640直接写入一个字符*/

/*display=1 显示*/

/*display=0 关闭*/

void led_char(unsigned char name,unsigned char display)

{

unsigned char i,j;

i= name/8;

j= name%8;

if (display == 1) led_buffer[i] |= 1<<j;

else led_buffer[i] &= ~(1<<j);

flood_led_data();

}

/*清屏*/

/*如果128个点全部用到，需要修改变量I的值*/

void led_clr()

{

for (char i=0; i<=11;i++) led_buffer[i]=0;

flood_led_data();

}

/*全显*/

/*如果128个点全部用到，需要修改变量I的值*/

void led_full()

{

for (char i=0; i<=11;i++) led_buffer[i]=0xff;

flood_led_data();

}

//向TM1640写一个0~9的数

//电压显示数位左至右为0~3，DB/DBM显示数位左至右为4~7；

//number：想显示的数 0~9 （10：显示H，仅0-3位数字有效）

//position：显示的数位

//display：显示开关，0 关闭该数位显示（此时number值无效），1 显示该数位数字

void led_number(unsigned char number,unsigned char position,unsigned char display)

{

switch (position)

{

case 0:

led_buffer[3] &= 0x80;

if (display == 0)

break;

else switch(number)

{

case 0:led_buffer[3] |= 0x3f;

break;

case 1:led_buffer[3] |= 0x06;

break;

case 2:led_buffer[3] |= 0x5b;

break;

case 3:led_buffer[3] |= 0x4f;

break;

case 4:led_buffer[3] |= 0x66;

break;

case 5:led_buffer[3] |= 0x6d;

break;

case 6:led_buffer[3] |= 0x7d;

break;

case 7:led_buffer[3] |= 0x07;

break;

case 8:led_buffer[3] |= 0x7f;

break;

case 9:led_buffer[3] |= 0x6f;

break;

case 10:led_buffer[3] |=0x76; //显示H

break;

case 11:led_buffer[3] |=0x40; //显示-

break;

}

break;

case 1:

led_buffer[2] &= 0x80;

if (display == 0)

break;

else switch (number)

{

case 0:led_buffer[2] |= 0x3f;

break;

case 1:led_buffer[2] |= 0x06;

break;

case 2:led_buffer[2] |= 0x5b;

break;

case 3:led_buffer[2] |= 0x4f;

break;

case 4:led_buffer[2] |= 0x66;

break;

case 5:led_buffer[2] |= 0x6d;

break;

case 6:led_buffer[2] |= 0x7d;

break;

case 7:led_buffer[2] |= 0x07;

break;

case 8:led_buffer[2] |= 0x7f;

break;

case 9:led_buffer[2] |= 0x6f;

break;

case 10:led_buffer[2] |=0x76; //显示H

break;

case 11:led_buffer[2] |=0x40; //显示-

break;

}

break;

case 2:

led_buffer[1] &= 0x80;

if (display == 0) break;

else switch (number)

{

case 0:led_buffer[1] |= 0x3f;

break;

case 1:led_buffer[1] |= 0x06;

break;

case 2:led_buffer[1] |= 0x5b;

break;

case 3:led_buffer[1] |= 0x4f;

break;

case 4:led_buffer[1] |= 0x66;

break;

case 5:led_buffer[1] |= 0x6d;

break;

case 6:led_buffer[1] |= 0x7d;

break;

case 7:led_buffer[1] |= 0x07;

break;

case 8:led_buffer[1] |= 0x7f;

break;

case 9:led_buffer[1] |= 0x6f;

break;

case 10:led_buffer[1] |=0x76; //显示H

break;

case 11:led_buffer[1] |=0x40; //显示-

break;

}

break;

case 3:

led_buffer[0] &= 0x80;

if (display == 0) break;

else switch (number)

{

case 0:led_buffer[0] |= 0x3f;

break;

case 1:led_buffer[0] |= 0x06;

break;

case 2:led_buffer[0] |= 0x5b;

break;

case 3:led_buffer[0] |= 0x4f;

break;

case 4:led_buffer[0] |= 0x66;

break;

case 5:led_buffer[0] |= 0x6d;

break;

case 6:led_buffer[0] |= 0x7d;

break;

case 7:led_buffer[0] |= 0x07;

break;

case 8:led_buffer[0] |= 0x7f;

break;

case 9:led_buffer[0] |= 0x6f;

break;

case 10:led_buffer[0] |=0x76; //显示H

break;

case 11:led_buffer[0] |=0x40; //显示-

break;

}

break;

case 4:

led_buffer[7] &= 0x80;

if (display == 0) break;

else switch (number)

{

case 0:led_buffer[7] |= 0x3f;

break;

case 1:led_buffer[7] |= 0x06;

break;

case 2:led_buffer[7] |= 0x5b;

break;

case 3:led_buffer[7] |= 0x4f;

break;

case 4:led_buffer[7] |= 0x66;

break;

case 5:led_buffer[7] |= 0x6d;

break;

case 6:led_buffer[7] |= 0x7d;

break;

case 7:led_buffer[7] |= 0x07;

break;

case 8:led_buffer[7] |= 0x7f;

break;

case 9:led_buffer[7] |= 0x6f;

break;

case 10:led_buffer[7] |=0x76; //显示H

break;

case 11:led_buffer[7] |=0x40; //显示-

break;

}

break;

case 5:

led_buffer[6] &= 0x80;

if (display == 0) break;

else switch (number)

{

case 0:led_buffer[6] |= 0x3f;

break;

case 1:led_buffer[6] |= 0x06;

break;

case 2:led_buffer[6] |= 0x5b;

break;

case 3:led_buffer[6] |= 0x4f;

break;

case 4:led_buffer[6] |= 0x66;

break;

case 5:led_buffer[6] |= 0x6d;

break;

case 6:led_buffer[6] |= 0x7d;

break;

case 7:led_buffer[6] |= 0x07;

break;

case 8:led_buffer[6] |= 0x7f;

break;

case 9:led_buffer[6] |= 0x6f;

break;

case 10:led_buffer[6] |=0x76; //显示H

break;

case 11:led_buffer[6] |=0x40; //显示-

break;

}

break;

case 6:

led_buffer[5] &= 0x80;

if (display == 0) break;

else switch (number)

{

case 0:led_buffer[5] |= 0x3f;

break;

case 1:led_buffer[5] |= 0x06;

break;

case 2:led_buffer[5] |= 0x5b;

break;

case 3:led_buffer[5] |= 0x4f;

break;

case 4:led_buffer[5] |= 0x66;

break;

case 5:led_buffer[5] |= 0x6d;

break;

case 6:led_buffer[5] |= 0x7d;

break;

case 7:led_buffer[5] |= 0x07;

break;

case 8:led_buffer[5] |= 0x7f;

break;

case 9:led_buffer[5] |= 0x6f;

break;

case 10:led_buffer[5] |=0x76; //显示H

break;

case 11:led_buffer[5] |=0x40; //显示-

break;

}

case 7:

led_buffer[4] &= 0x80;

if (display == 0) break;

else switch (number)

{

case 0:led_buffer[4] |= 0x3f;

break;

case 1:led_buffer[4] |= 0x06;

break;

case 2:led_buffer[4] |= 0x5b;

break;

case 3:led_buffer[4] |= 0x4f;

break;

case 4:led_buffer[4] |= 0x66;

break;

case 5:led_buffer[4] |= 0x6d;

break;

case 6:led_buffer[4] |= 0x7d;

break;

case 7:led_buffer[4] |= 0x07;

break;

case 8:led_buffer[4] |= 0x7f;

break;

case 9:led_buffer[4] |= 0x6f;

break;

case 10:led_buffer[4] |=0x76; //显示H

break;

case 11:led_buffer[4] |=0x40; //显示-

break;

}

break;

}

flood_led_data();

}

/*初始化*/

void init_tm1640(void)

{

TMSCL = 1;

TMSDA = 1;

start();

write(LEVEL_5); //设置显示亮度

stop();

}

关键词： TM1640 驱动程序数码管驱动 LED

无厘头

工程师

2019-07-03 23:02:09 打赏

2楼

感谢分享

同煮山川

工程师

2019-07-03 23:03:56 打赏

3楼

学习到了

Dummer3

工程师

2019-07-03 23:06:30 打赏

4楼

谢谢分享

白岭

工程师

2019-07-03 23:39:31 打赏

5楼

通俗易懂的程序！

明月风

工程师

2019-07-03 23:43:33 打赏

6楼

TM1640 确实外围简单，下次试试用来驱动LED灯。

bai8

工程师

2019-07-03 23:53:48 打赏

7楼

I2C 接口的一个不错的实例应用，good job!

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