谁能给帮忙把这个程序分解下谢谢。数码管实在搞不亮

ID:125710 · 发表于 2016-7-2 16:47

#include "p18cxxx.h"             //头文件
#include "delays.h"
#include "SEG.h"
#define uchar unsigned char
#define uint unsigned int
#define  uch unsigned char                   //给unsigned char起别名 uch
# define DQ  LATAbits.LATA0                            //定义18B20数据端口
# define DQ_DIR TRISAbits.TRISA0                      //定义18B20D口方向寄存器
# define DQ_HIGH()  DQ =1 ; DQ_DIR =1                //设置数据口为输入
# define DQ_LOW() DQ_DIR = 0 ;DQ = 0       //设置数据口为输出
unsigned char  TLV=0 ;                      //采集到的温度高8位
unsigned char  THV=0;                      //采集到的温度低8位
unsigned char TZ=0;                         //转换后的温度值整数部分
unsigned char TX=0;                         //转换后的温度值小数部分
unsigned int wd;                            //转换后的温度值BCD码形式
unsigned char shi;                            //整数十位
unsigned char ge;                            //整数个位
unsigned char shifen;                         //十分位
unsigned char baifen;                         //百分位
unsigned char qianfen;                      //千分位
unsigned char wanfen;                         //万分位
#define TMR0HLOAD    0xf6       //4MHZ  2.5mS
#define TMR0LLOAD    0x4D
unsigned char TickClock = 0;    //系统时基

#define SCLK LATBbits.LATB0    //74HC164时钟
#define SDAT LATBbits.LATB1    //74HC164数据
const unsigned char SegCode[] = //图型表
{
Bmp0Map,Bmp1Map,Bmp2Map,Bmp3Map,Bmp4Map,Bmp5Map,
Bmp6Map,Bmp7Map,Bmp8Map,Bmp9Map,BmpAMap,BmpBMap,
BmpCMap,BmpDMap,BmpEMap,BmpFMap
};
const unsigned char SegCS[6] = {0xFE,0xFD,0xFB,0xF7,0xEF,0xDF};             //显示片选
unsigned char SegBuf[6] = {BmpPMap,Bmp1Map,BmpCMap,Bmp1Map,Bmp8Map,BmpFMap}; //显示缓冲

//-------------------------------------------------------------------------------
// 数码管显示驱动
//-------------------------------------------------------------------------------
void SegDisplay(void)
{
static unsigned char i = 0;
unsigned char j;
unsigned char tep;
tep = SegCS;       //片选输出
for(j=0;j<8;j++)       //8位
{
  if(tep&0x80) SDAT = 1;
  else       SDAT = 0;
  SCLK = 1;
  SCLK = 0;
  tep = tep<< 1;
}
tep = SegBuf;       //数据输出
for(j=0;j<8;j++)       //8位
{
  if(tep&0x80) SDAT = 1;
  else       SDAT = 0;
  SCLK = 1;
  SCLK = 0;
  tep = tep<< 1;
}

if(i < 5) i ++;       //扫描6位
else    i = 0;
}
//-------------------------------------------------------------------------------

//-------------------------------------------------------------------------------
// ADC采集程序
//-------------------------------------------------------------------------------
unsigned int  SampleADValue[8]; // 8次采样
unsigned int  AvgADValue = 0;    // AD采样平均值
unsigned char ADConverStep = 0; // AD采样频步
void GET_ADValue(void)
{
unsigned char i;
unsigned int ConverValue;
do
{
}while(ADCON0bits.GO_DONE); //等待转换完成
ConverValue = ADRESH;       //处理10位结果
ConverValue = (ConverValue << 8) + ADRESL;
SampleADValue[ADConverStep] = ConverValue;
if (ADConverStep == 7)
{
  ConverValue = 0;
  for (i = 0; i < 8 ; i++)
  {
ConverValue += SampleADValue;
  }
  AvgADValue = ConverValue >> 3;
  ADConverStep = 0;
}
else
{
  ADConverStep++;
}
}
//-------------------------------------------------------------------------------
// TMR1定时器初始化
//-------------------------------------------------------------------------------
void TMR1_Init(void)
{
TMR1H = 0xF0;          //4mS 4MHz
TMR1L = 0x98;
T1CONbits.RD16 = 1;    //16位定时方式
T1CONbits.TMR1CS = 0;    //内部FOSC/4
PIE1bits.TMR1IE = 1;    //T1中断 ON
}
//-------------------------------------------------------------------------------
// ADC初始化
//-------------------------------------------------------------------------------
void ADC_Init(void)             // ADC 初始化
{
ADCON0 = 0b00000001;       // ADC模块使能
ADCON1 = 0b00001110;       // AN0 ADC输入
ADCON2 = 0b10111111;       // 右对齐  FRC
}
//-------------------------------------------------------------------------------
// 高优先级中断向量
//-------------------------------------------------------------------------------
#pragma code InterruptVectorHigh = 0x08
void InterruptVectorHigh(void)
{
_asm
goto  Interrupt_High       //跳到中断程
_endasm
}
//-------------------------------------------------------------------------------
// 高优先级中断服务程序
//-------------------------------------------------------------------------------
#pragma interrupt Interrupt_High
void Interrupt_High(void)
{
if(PIR1bits.TMR1IF)       //T1中断
{
  PIR1bits.TMR1IF = 0;    //清除标志位
  TMR1H = 0xF0;          //4MS
  TMR1L = 0x98;
  SegDisplay();          //扫描显示
  TickClock = 1;       //置位
}
if(PIR1bits.RCIF)          // 接收中断
{
  PIR1bits.RCIF = 0;
  TXREG = RCREG;          // 将收到的数据发出
  if(RCSTAbits.OERR)    // 接收溢出错误处理
  {
RCSTAbits.CREN = 0;
RCSTAbits.CREN = 1;
  }
}
}
//-------------------------------------------------------------------------------
// 计算温度值
//-------------------------------------------------------------------------------
int GET_TempValue(unsigned int ADCValue)
{
ADCValue = (32*ADCValue)/10;    // y = (3300/1024)* x

if(ADCValue >500) ADCValue = (ADCValue - 500); //零上 500mV时零度
else             ADCValue = (500 - ADCValue); //零下

return ADCValue;
}
void initled()//初始化数码管
{
SegBuf[0] = Bmp0Map;             // "T"
SegBuf[1] = Bmp0Map;                // "P"
SegBuf[2] = Bmp0Map; //千位
SegBuf[3] = Bmp0Map;//百位
SegBuf[4] = Bmp0Map;
SegBuf[5] = Bmp0Map;
}
//-------------------------------------------------------------------------------
// 数码管分段显示函数
//-------------------------------------------------------------------------------
void LEDisplay(unsigned int ADValue)
{
SegBuf[0] = Bmp0Map;             // "T"
SegBuf[1] = Bmp0Map;                // "P"
SegBuf[2] = SegCode[ADValue/1000]; //千位
SegBuf[3] = SegCode[ADValue%1000/100];//百位
SegBuf[4] = SegCode[ADValue%100/10]|Smg_dp;  //十位有小数点
SegBuf[5] = SegCode[ADValue%10];    //个位
}
//-------------------------------------------------------------------------------
// 主程序部分
//-------------------------------------------------------------------------------
void main(void)
{
unsigned int SystemTick = 0; // 串口发数据定时
TRISB = 0b11111100;       //RB0 RB1 输出
TMR1_Init();                //定时器1初始化
ADC_Init();                //ADC初始化

INTCONbits.PEIE = 1;       //外设中断允许
INTCONbits.GIE  = 1;       //总中断允许
T1CONbits.TMR1ON= 1;       //使能T1
  initled();

while(1)
{
  if(TickClock)          //采集AD值
  {
TickClock = 0;
ADCON0bits.GO_DONE = 1;
SystemTick ++;
GET_ADValue();
  }
  if(SystemTick > 300)    //发送1次AD采样值
  {
SystemTick = 0;
AvgADValue = GET_TempValue(AvgADValue);  //获取温度值
LEDisplay(AvgADValue);                //显示温度值
  }
}
}
//-------------------------------------------------------------------------------

我想把数码管显示和定时器分离，搞74HC146清楚数码管到底怎么驱动的。或者哪位大神帮忙注释下，