求飞思卡尔单片机mc9s12xs128 超频CW5.0例程_软件运维

void MCUInit()

{

DisableInterrupts//禁止总中断

CLKSEL &= 0x7f //CLKSEL的第7位置0，选择系统时钟源为OSCCLK

PLLCTL &= 0xbf //禁止PLL , PLLCTL.6(pllon)设为0先关闭PLL

SYNR = 0x01 //根据需要的时钟频率设置SYNR和REFDV寄存器

REFDV = 0x00

//PLLCLK=2*OSCCLK*(SYNR+1)/(REFDV+1)

PLLCTL |= (1<<6) //打开PLL , PLLCTL.6(pllon)设为1开PLL

while (( CRGFLG&0x08) == 0x00)//通过判断LOCK位，

//确定PLL是否稳定

CLKSEL |= (1<<7) //时钟频率稳定后迟老神，允许锁相环时钟源作为系统时钟源；

//本句执行后:BusClock=PLLCLK/2 BusClock = 32MHz

}

自己写的，调试过没问题，具体主线你含晌想用多码亏少根据注释自己改

我用了2年多的MC9S12，比较胡誉熟悉，建议早正你看孙同景编的《FREESCALE S12十六位单片机原理及嵌入式开发技术》，直接从后面的IO接口看起，多练习裤睁段例程很快就会熟练的

流水灯的程序何其简单

我这只有舵机，摄像头，和主程序，但是只是框架，要等调试。可以参考哈

#ifndef _WATCH_H_ //头文件保护

#define _WATCH_H_

#ifndef ULONG

#define ULONG unsigned long

#define UCHAR unsigned char

#define UINT unsigned int

#endif

#define ROAD_MAX 10

////////////////代设值

#define MP0 //捕捉象素引脚

#define HREF //捕捉行中断引颤春轮脚

//////////////////

static unsigned char Colors[10][48]//象素数组

static unsigned char JudgeMax //最大象素

static unsigned char JudgeMin //最小象素

unsigned char Over //中断函数处理完成

//使用数森御组后要清零

struct ROADS

{

unsigned char LeftRight //1 left, 0 right 2 表示没检测到黑线 4表示起始线

unsigned int road //转向率，0表示直线或则没检测到黑线

}Roads[10] //没检测到黑线一般为前方有大于90度的弯，

//行驶一会后数组会更新，不会因此丢掉跑道

unsigned long RoadLength； //mm单位

void GetRoads() //取象素

void ProcessRoads() //取转向率

void delay(UINT) //延时函数

void ColorToRoads(UINT) //2值化与赋值

#endif //_WATCH_H_

以下为实现文件：

//watch.c

#include <hidef.h> /* common defines and macros */

#include <MC9S12XS128.h>/* derivative information */

#include "watch.h"

#pragma CODE_SEG NON_BANKED

#pragma TRAP_PROC

void GetRoads() //场中断服务函数

{

UINT i

UINT Href= 0

delay(5)

while(HREF)

{

if(Href>= 270)//点读取完毕，退出循环

break

if((270-Href)%21!= 0 || Href<60) //取60-270行中平均间隔的行数，共30行

{

Href++

while(HREF) //等待此行扫描结束

while(!HREF) //等待新行开始扫描

continue

}

delay(...)//根据调式结果具体设置

for(i= 0i<48i++)

{

Colors[((270-Href)%21)][i]= MP0 //读取引脚数据，后来会根据串口还是并口读取做相应修改

if(MP0>judgeMax) //取最大最小值

JudgeMax= MP0

if(MP0<JudgeMin)

JudgeMin= MP0

delay(...) //具体设茄信置

}

Href++

while(HREF)

while(!HREF) //等待行中断结束

}

Over= 1 //中断函数处理完成

}

#pragma CODE_SEG DEFAULT

void ColorToRoads(UINT Href)

{

UINT i

UINT temp //用于起始线判断

UINT temp2

UINT temp3

UCHAR Judge //平均厥值

UINT j= 0

UINT m_nCount= 0

Judge= (JudgeMax+ JydgeMin)/2

Roads[Href].road= 0

Roads[Href].LeftRight= 0

for(i= 0i<48i+= 3)

{

if(Colors[i]<= Judge||

Colors[i+ 1]<= Judge||

Colors[i+ 2]<= Judge)

{

Roads[Href].road&= (0x8000>>(UCHAR)j)//相应位赋值为1

m_nCount++

}

j++

}

if(Roads[Href].road== 0x00)

{

Roads[Href].LeftRight= 0x02 //没有捕捉到黑线设置2

}

if(m_nCount>1) //若黑点数大于1，从左向右数出连续的点中的中间点

{

j= 0

i= 0

while(!(Roads[Href].road&(0x8000>>(UCHAR)i)))

{

i++

}

j= i

while((Roads[Href].road&(0x8000>>(UCHAR)i))

{

i++

if(i>15)

break

}

if(i<15) //起始线判断

{

temp= i

while(!(Roads[Href].road&(0x8000>>(UCHAR)temp)))

{

temp++

temp2= temp

}

if(temp<15)

{

while((Roads[Href].road&(0x8000>>(UCHAR)temp))

{

temp++

temp3= temp

if(temp>15)

break

}

if(temp<15)

{

while(!(Roads[Href].road&(0x8000>>(UCHAR)temp)))

{

temp++

}

if(temp<15)

{

Roads[Href].LeftRight= 0x04

Roads[Href].road&= 0x8000>>(UCHAR)((temp2+ temp3)/2)

return

}

Roads[Href].road&= 0x8000>>(UCHAR)((i+j)/2)

}

void ProcessRoads() //路径处理函数，在主函数中调用

{

int i

for (i= 0i<10i++)

{

ColorToRoads(i)

}

void delay(UINT m) //延时函数根据调试结果相应做改动

{

UINT i

UINT j

for(i= 0i<mi++)

{

for(j= 0j<200j++)

}

再下面就是主函数实现文件：

#include <hidef.h> /* common defines and macros */

#include <MC9S12XS128.h>/* derivative information */

#pragma LINK_INFO DERIVATIVE "mc9s12xs128"

#include "watch.h" //摄像头

#include "TurnAround.h" //舵机

//#include "..." //直流电机

//#include "..." //测速模块

#ifndef TRUE

#define TRUE 1

#define FLASE 0

#endif

#define ULONG unsigned long

#define UCHAR unsigned char

#define UINT unsigned int

#define LITTLE

#define LARGE

//////////////////////全局变量

UCHAR m_nCount //圈数计算

UCHAR m_nCount2

////////////////////////////////函数定义

void init() //初始化函数待修改

UCHAR CheckRoad(UCHAR*，UCHAR*) //第1参数返回第几个元素开始

//第2个参数返回第几个元素结束

//0 直线， 0x11有小弯道， 0x21大弯道， 0x31终点

void CarRun(UCHAR, UCHAR, UCHAR)//小车行驶函数

#pragma CODE_SEG NON_BANKED

#pragma TRAP_PROC

void Int_TimerOverFlow(void) //32MHz TCNT 50000--200ms

{

static int m= 0

if(m== 15) //3秒

{

m_nCount2= 0

TSCR1_TEN= 0//关定时器

TFLG2_TOF = 1

}

m++

}

#pragma CODE_SEG DEFAULT

void TimerInit()

{

TIOS= 0x00

TSCR2_PR= 7 //默认情况下是32MHz bus clock,所以分频后主时钟为 0.25MHz

TSCR2_TOI= 1 //OverFlow方式

TCNT= 65535- 50000

TSCR1_TEN= 1 //开定时器

}

////////////////////////////////

void main() //主程序

{

UCHAR ret

UCHAR number1= 0

UCAHR number2= 0

init()

while(1)

{

while(over) //等待扫描完毕

over= 0

IRQCR_IRQEN= 0 //关外部中断IRQ

ProcessRoads() //interface of watch.h

ret= CheckRoad(&number1, &number2) //检测路径

if(ret== 0x31)

break

CarRun(number1, number2, ret)

}

PWME_PWME1= 0//关闭PWM

while(1)

}

void init()

{

IRQCR_IRQE= 1 //下降沿触发IRQ

PE1= 1

EnableInterrupts //开总中断

INTCR_IRQEN= 1

PWMInit()//舵机初始化

Speed(MAX)

}

UCHAR CheckRoad(UCHAR* number1, UCHAR number2)

{

int i

int sub= 0

int psub= 0

int temp

bool flag

UCHAR ret

i= 0

m_nCount2++

while(!Roads[i].road)

{

i++

}

*number1= i

if(Roads[i].road>= Roads[i+ 1].road)

{

flag= TRUE

psub= Roads[0].road- Roads[1].road

}

else

{

flag= FALSE

psub= Roads[1].road- Roads[0].road

}

for(i<9i++)

{

if(Roads[i].LeftRight== 0x04)

{

if(m_nCount2== 0)

{

m_nCount2= 1

m_nCount++

TimerInit()

}

if(m_nCount== 3)

{

Speed(0)

ret= 0x31

goto _RET

}

if(Roads[i+ 1].road== 0)

{

break

}

if(flag)

{

sub= Roads[i].road- Roads[i+ 1].road

}

else

{

sub= Roads[i+ 1].road- Roads[i].road

}

sub>>= (UCHAR)i

if(sub>= psub) //取差值

temp= sub- psub

else

temp= psub- sub

if(temp>LARGE) //大弯道

{

ret= 0x21

while(Roads[i].road!= 0)

{

i++

*number2= i

if(i>9)

break

}

goto _RET

}

if(temp>LITTLE) //小弯道

{

ret= 0x11

while(Roads[i].road!= 0)

{

i++

*number2= i

if(i>9)

break

}

goto _RET

}

*number2= i

psub= sub

}

_RET:

return ret

}

void CarRun(UCHAR number1, UCHAR number2, UCHAR ret)

{

int end= Roads[number2].road

Turn(number2- number1, end- 0x100, Roads[number2].LeftRight, ret) //舵机函数

IRQCR_IRQEN= 1//开IRQ

}

下面为舵机头文件：

//TurnAround.h

#ifndef _TURNAROUND_H_ //头文件保护

#define _TURNAROUND_H_

void Turn(unsigned char, unsigned int, unsigned char, unsigned char)//转角函数

void PWMInit() //优先初始化

#endif

再以下为实现文件：(表内容待实验后求得)

//TurnAround.c

#include <hidef.h> /* common defines and macros */

#include <MC9S12XS128.h>/* derivative information */

#pragma LINK_INFO DERIVATIVE "mc9s12xs128"

#include "TurnAround.h"

#include "..."//直流电机

#ifndef ULONG

#define ULONG unsigned long

#define UCHAR unsigned char

#define UINT unsigned int

#endif

/////////////////////////转角定义

#define RIGHT60 1083

#define RIGHT45 1000

#define RIGHT30 917

#define RIGHT15 833

#define RIGHT5 778

#define MIDDLE 750

#define LEFT5 722

#define LEFT15 667

#define LEFT30 583

#define LEFT45 500

#define LEFT60 417

/////////////////////////速度定义

#define SPEED0 //直线速度

#define SPEED5

#define SPEED15

#define SPEED30

#define SPEED45

#define SPEED60

//PWM查询表 7*10*2

static UINT PWMTable[]=

{

//Left

LEFT60, LEFT60, LEFT60, LEFT60, LEFT60, LEFT60, LEFT60, LEFT60, LEFT60, LEFT60,

//Right

RIGHT60, RIGHT60, RIGHT60, RIGHT60, RIGHT60, RIGHT60, RIGHT60, RIGHT60, RIGHT60, RIGHT60,

RIGHT60, RIGHT60, RIGHT60, RIGHT60, RIGHT60, RIGHT60, RIGHT60, RIGHT60, RIGHT60, RIGHT60

}

//延时查询表 6*6

static UNIT DelayTable[]=

{

0,0,0,0,0,0,

0,0,0,0,0,0

}

void PWMInit()//32HHz

{

PWMCTL_CON01= 1 //0, 1合为16bit

PWMCAE_CAE1= 1 //Center mode

PWMCLK_PLCK1= 0 //Clock A

PWMPRCLK_PCKA= 5 //Clock A= 32MHz/32= 1MHz

PWMPOL_PPOL1= 0 //开始为低电压

PWMPER0,1= 10000 //50Hz PWM输出

PWMDTY0,1= MIDDLE //(10000- 750)* 100%= 92。5%占空比，1.5ms高电压时间

PWME_PWME1= 1 //enable

}

static void delay(int ms)

{

int ii,jj

if (ms<1) ms=1

for(ii=0ii<msii++)

for(jj=0jj<2770jj++) //32MHz--1ms

}

static void SetPWM(UINT m_nPWM) //PWM设置

{

PWMDTY0,1= m_nPWM

}

//number 9种情况，sub 7种情况，LeftRight 2中情况

//共128种情况，采用模糊控制暂时归纳为11种情况

//11种情况将填入表中提供查询，11中情况分别为：

//左右5， 15， 30， 45， 60度

//和正中间0度

static UINT GetPWM(UCHAR number, UINT sub, UCHAR LeftRight)

{

switch(sub) //通过sub算出索引值

{

case 0x8000- 0x0100:

case 0x0100- 0x0001

case 0x0100- 0x0002

sub= 0

break

case 0x4000- 0x0100:

case 0x0100- 0x0004:

sub= 1

break

case 0x2000- 0x0100:

case 0x0100- 0x0008:

sub= 2

break

case 0x1000- 0x0100:

case 0x0100- 0x0010:

sub= 3

break

case 0x0800- 0x0100:

case 0x0100- 0x0020:

sub= 4

break

case 0x0400- 0x0100:

case 0x0100- 0x0040:

sub= 5

break

case 0x0200- 0x0100:

case 0x0100- 0x0100:

case 0x0100- 0x0080:

sub= 6

break

}

return PWMTable[number+ sub* 10+ LeftRight* 70]

}

//通过m_nPWM来改变速度，并返回改变的值

static UINT ChangeSpeed(UINT m_nPWM)

{

UINT m_nSpeed

switch(m_nPWM) //根据m_nPWM 调节速度

{

case LEFT60:

Speed(SPEED60)

m_nSpeed= SPEED60

break

case LEFT45:

Speed(SPEED45)

m_nSpeed= SPEED45

break

case LEFT30:

Speed(SPEED30)

m_nSpeed= SPEED30

break

case LEFT15:

Speed(SPEED15)

m_nSpeed= SPEED15

break

case LEFT5:

Speed(SPEED5)

m_nSpeed= SPEED5

break

case MIDDLE:

Speed(SPEED0)

m_nSpeed= SPEED0

break

case RIGHT60:

Speed(SPEED60)

m_nSpeed= SPEED60

break

case RIGHT45:

Speed(SPEED45)

m_nSpeed= SPEED45

break

case RIGHT30:

Speed(SPEED30)

m_nSpeed= SPEED30

break

case RIGHT15:

Speed(SPEED15)

m_nSpeed= SPEED15

break

case RIGHT5:

Speed(SPEED5)

m_nSpeed= SPEED5

break

}

return m_nSpeed

}

//获得查表时的索引值

UINT GetIndex(UINT m_nSpeed)

{

if(m_nSpeed<= SPEED60)

{

m_nSpeed= 0

}

else if(m_nSpeed<= SPEED45)

{

m_nSpeed= 1

}

else if(m_nSpeed<= SPEED30)

{

m_nSpeed= 2

}

else if(m_nSpeed<= SPEED15)

{

m_nSpeed= 3

}

else if(m_nSpeed<= SPEED5)

{

m_nSpeed= 4

}

else

{

m_nSpeed= 5

}

return m_nSpeed

}

//m_nSpeed2为欲设值

//m_nSpeed为当前速度

UINT GetDelay(UINT m_nSpeed, UINT m_nSpeed2)

{

m_nSpeed= GetIndex(m_nSpeed)

m_nSpeed2= GetIndex(m_nSpeed2)

return DelayTable[m_nSpeed* 6+ m_nSpeed2]

}

void Turn(UCHAR number, UINT sub, UCHAR LeftRight, UCHAR ret)//ret not be used now

{

UINT m_nPWM

UINT m_nSpeed

UINT m_nSpeed2

UINT m_nDelay //延时参数

m_nPWM= GetPWM(number, sub, LeftRight)

m_nSpeed= GetSpeed() //测速模块

m_nSpeed2= ChangeSpeed(m_nPWM)

if(m_nSpeed2>m_nSpeed)

m_nSpeed= m_nSpeed2- m_nSpeed

else

m_nSpeed= m_nSpeed- m_nSpeed2

SetPWM(m_nPWM) //转角

m_nDelay= GetDelay(m_nSpeed, m_nSpeed2)

delay(m_nDelay) //根据速度和角度延时

SetPWM(MIDDLE) //舵机摆正

}

最后说哈，程序只差调试就可以，筐架就是这。我是湖北赛区的，7月就要比赛了，他们车还没做好啊。

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求飞思卡尔单片机mc9s12xs128 超频CW5.0例程

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