STM32驱动TM1723段码屏

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TLLED 发布时间：2018-7-4 14:25

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拆了一个雷达小显示盒，里面使用的TM1723芯片驱动段码屏，拿来练练手，使用STM32F103RTB6驱动。

//TM1723.C
#include "config.h"

const u8 dispdat[]={0xd7,0x06,0xe3,0xa7,0x36,0xb5,0xf5,0x07,0xf7,0xb7};

//TM1723初始化
void Init_TM1723(void)
{
GPIO_InitTypeDef  GPIO_InitStructure;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
  GPIO_SetBits(GPIOA,GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3);
}

//延时
void TM1723_Delayus(u32 ys)
{
u8 i;
u32 j;
for(j=0;j<ys;j++)
{
for(i=0;i<5;i++); //´óÔ¼1us
}
}

//TM1723写字节
void TM1723_WriteByte(u8 dat)
{
u8 i;

for(i=0;i<8;i++)
{
TM1723_CLK=0;
if( (dat&0x01)==0x01 )
{
TM1723_DIO=1;
}
else
{
TM1723_DIO=0;
}
dat=dat>>1;

TM1723_CLK=1;

TM1723_Delayus(2); //2us
}
}

//tm1723写命令
void TM1723_WriteCmd(u8 cmd)
{
TM1723_CLK=1;
TM1723_STB=0;

TM1723_WriteByte(cmd);
TM1723_STB=1;

TM1723_Delayus(100); //100us
}

//tm1723写数据
void TM1723_WriteDat(u8 addr, u8 dat)
{
TM1723_CLK=1;
TM1723_STB=0;
TM1723_WriteByte(addr);
TM1723_Delayus(50);
TM1723_WriteByte(dat);
TM1723_STB=1;
TM1723_Delayus(100); //100us
}

//测试
void tt(u8 i)
{
TM1723_WriteCmd(0x00);
TM1723_WriteCmd(0x44);
TM1723_WriteDat(0xc0, 0x00);
TM1723_WriteDat(0xc1, 0x00);
TM1723_WriteDat(0xc2, dispdat[(i%100)%10]);
TM1723_WriteDat(0xc3, dispdat[(i%100)/10]);
TM1723_WriteDat(0xc4, dispdat[i/100]);
TM1723_WriteDat(0xc5, 0xff);
TM1723_WriteDat(0xc6, 0x00);
TM1723_WriteDat(0xc7, 0x00);
TM1723_WriteDat(0xc8, 0x00);
TM1723_WriteDat(0xc9, 0xff);
TM1723_WriteDat(0xca, 0xff);
TM1723_WriteDat(0xcb, 0xff);
TM1723_WriteDat(0xcc, 0xff);
TM1723_WriteDat(0xcd, 0x00);
TM1723_WriteDat(0xce, 0xff);
TM1723_WriteDat(0xcf, 0xff);

TM1723_WriteCmd(0x97);
}

//TM1723.H
#ifndef __TM1723_H_
#define __TM1723_H_

#define TM1723_DIO    PAout(1) // PA1
#define TM1723_CLK    PAout(2) // PA2
#define TM1723_STB    PAout(3) // PA3

extern void Init_TM1723(void);
extern void tt(u8 i);

#endif

最后显示的图片