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   源码介绍

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GPIO ,ADC,PWM等实际demo

MC9S08DZ60中文数据手册.pdf

新学习板说明书（MC9S08DZ）.pdf

例程源码

#include <hidef.h> /* for EnableInterrupts macro */
#include "derivative.h" /* include peripheral declarations */
//===================================
#define LED_DAT PTBD
#define LED_CS0 PTCD_PTCD3
#define LED_CS1 PTCD_PTCD4
#define LED_CS2 PTCD_PTCD5
#define LED_CS3 PTCD_PTCD6
#define LED_CS4 PTCD_PTCD7
#define CS_ON   1
#define CS_OFF  0
const uchar tab[]={
        0x3F,/*0*/
        0x06,/*1*/
        0x5B,/*2*/
        0x4F,/*3*/
        0x66,/*4*/
        0x6D,/*5*/
        0x7D,/*6*/
        0x07,/*7*/
        0x7F,/*8*/
        0x6F/*9*/
};//0-9,-,全灭
unsigned int g_adval_0,g_adval_1;
byte ch_s;//通道选择

void Init_Port(void) {
//io初始值都为0
PTBD = 0x00;
  PTCD_PTCD2=0;
  PTCD_PTCD3=0;
  PTCD_PTCD4=0;
  PTCD_PTCD5=0;
  PTCD_PTCD6=0;
  PTCD_PTCD7=0;
//io为输出
PTBDD = 0xFF;
  PTCDD_PTCDD2=1;
  PTCDD_PTCDD3=1;
  PTCDD_PTCDD4=1;
  PTCDD_PTCDD5=1;
  PTCDD_PTCDD6=1;
  PTCDD_PTCDD7=1;

//io为输出
PTBDS = 0xFF;
  PTCDS_PTCDS2=1;
  PTCDS_PTCDS3=1;
  PTCDS_PTCDS4=1;
  PTCDS_PTCDS5=1;
  PTCDS_PTCDS6=1;
  PTCDS_PTCDS7=1;  
}
//================================
//函数名：delay
//函数功能：延时函数
//================================
void delay(void)
{
int i ;
for(i=0;i<0x20;i ) __RESET_WATCHDOG(); 

}

//===================================
//函数名：Init_ADC
//作用：初始化ADC
//================================================================================================================
void Init_ADC(void)
{
ADCCFG=0x94;//低功耗模式，12位精度，ADCK=总线频率
ADCSC2=0x00;//0x00:软件触发，比较功能禁止
APCTL1=0x01;//通道引脚使能：0x01:AD0;0x02:AD1依此类推
//APCTL2=0x04;
APCTL2=0x00;
ch_s=0;//选择0通道
ADCSC1=0x41;//0x40:中断使能，单次转换，选择AD1,AD10并启动了转换.
}
void display(uchar d0 , uchar d1 , uchar d2 , uchar d3 , uchar d4) {
  //8个发光二极管
  LED_DAT = 0;
  LED_CS0 = CS_ON;
  LED_CS1 = CS_OFF;
  LED_CS2 = CS_OFF;
  LED_CS3 = CS_OFF;
  LED_CS4 = CS_OFF;
  LED_DAT = d0;
  delay();
  //第四个8
  LED_DAT = 0;
  LED_CS0 = CS_OFF;
  LED_CS1 = CS_OFF;
  LED_CS2 = CS_OFF;
  LED_CS3 = CS_OFF;
  LED_CS4 = CS_ON;
  LED_DAT = d1;
  delay();
  //第三个8
  LED_DAT = 0;
  LED_CS0 = CS_OFF;
  LED_CS1 = CS_OFF;
  LED_CS2 = CS_OFF;
  LED_CS3 = CS_ON;
  LED_CS4 = CS_OFF;
  LED_DAT = d2;
  delay();
  //第二个8
  LED_DAT = 0;
  LED_CS0 = CS_OFF;
  LED_CS1 = CS_OFF;
  LED_CS2 = CS_ON;
  LED_CS3 = CS_OFF;
  LED_CS4 = CS_OFF;
  LED_DAT = d3;
  delay();
  //第一个8
  LED_DAT = 0;
  LED_CS0 = CS_OFF;
  LED_CS1 = CS_ON;
  LED_CS2 = CS_OFF;
  LED_CS3 = CS_OFF;
  LED_CS4 = CS_OFF;
  LED_DAT = d4;
  delay();  
  
 }

void main(void) {
  int val;
  uint cnt;
  Init_Port();
  Init_ADC();
 
  EnableInterrupts; /* enable interrupts */
  /* include your code here */
  for(;;) {
    val = g_adval_0;
    for(cnt=0 ; cnt<300 ; cnt ){
      display(0x55,tab[(val/1000)%10],tab[(val/100)%10],tab[(val/10)%10],tab[val%10]);
      //display(0x55,tab[1],tab[2],tab[3],tab[4]);
      __RESET_WATCHDOG(); /* feeds the dog */
    }
  } /* loop forever */
  /* please make sure that you never leave main */
}
//=========================================
//==========================================
//ADC转换完成中断服务程序
//==========================================
interrupt VectorNumber_Vadc ADC_ISR(void)
{

switch(ch_s)
{
case 0:
  g_adval_0=ADCR;

    ADCSC1=0x41;//软件启动下一次转换,下一次转换将转换AD1通道的电压值
    break;
   case 1:
    g_adval_1=ADCR;
    ADCSC1=0x40;//软件启动下一次转换,下一次转换将转换AD0通道的电压值
    break;
   default:
    break;
}
asm(nop);//在此设置一个断点，观测ad_h和ad_l的变化

if(ch_s==0)
{
ch_s=1;
}
else
{
ch_s=0;
}

}