cc2530流水燈程序

ID:363452 · 發(fā)表于 2018-7-2 19:31

/*main.c*/
#include <ioCC2530.h>

#define uint unsigned int
#define uchar unsigned char

//定義控制燈的端口
#define LED4 P1_1 //定義 LED2 為 P11 口控制

//Define key ports
#define S4 P0_6  //main button
#define S5 P0_4  //turn down
#define S6 P0_5  //turn up

//Define LED and key status
#define LED_ON 0
#define LED_OFF 1

#define KEY5 5
#define KEY6 6
#define KEY4 4
#define KEY_UP 1
#define KEY_DOWN 0

#define ON 1
#define OFF 0

//Define Cycle time
uint Cycle_Time = 300;
uint LED_Time = 0;
uint flag = KEY_UP; //Record the last status of S4
uint on_off = OFF;
uchar key = 0;
uint temp = 0; //Record the value of LED_Time

//函數(shù)聲明

void Delay(uint); //延時函數(shù)
void LED_Init(void); //初始化 LED 控制 IO 口函數(shù)
void Key_Init(void); //Initialize Keys
uchar Key_Scan(void); //Monitor the status of Keys
void PWM_Control(void); //Adjust the brightness of LED

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

//延時

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

void Delay(uint n)

{
  uint i;

  for(i = 0;i<n;i++);
  for(i = 0;i<n;i++);
  for(i = 0;i<n;i++);
  for(i = 0;i<n;i++);
  for(i = 0;i<n;i++);
}

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

//初始化 IO 口程序

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

void LED_Init(void)

{
  P1SEL &= ~0x02;
  P1DIR |= 0x02; //P11、定義為輸出LED1 = 1;

  LED4 = LED_OFF;
}

void Key_Init(void)
{
  P0SEL &= ~0x70;
  P0DIR &= ~0x70;
}

uchar Key_Scan(void)
{
  if(S5 == KEY_DOWN){
return KEY5;
  }
  else if (S6 == KEY_DOWN){
return KEY6;
  }
  else if (S4 == KEY_DOWN && flag == KEY_UP){ //用于判斷是否長按,flag表示上一次S4的狀態(tài)
flag = S4;
Delay(200); //Remove the influence of jitters
if(S4 == KEY_DOWN) on_off = !on_off; //Reverse the status

if(on_off == OFF){ //turn off the LED
   LED4 = LED_OFF;
}
return KEY4;
  }

  flag = S4;
  return 0;
}

void PWM_Control(void)
{
  if(key == 5){
//turn down
if(LED_Time<Cycle_Time) LED_Time++;
  }
  else if(key == 6) {
//turn up
if(LED_Time>0) LED_Time--;
  }

/*  if(LED_Time == 0 || LED_Time == Cycle_Time) {
if(LED_Time == 0) {
   LED4 = LED_ON;
   return;
}else{
   LED4 = LED_OFF;
   return;
}
  }*/
  LED4 = LED_OFF;
  Delay(LED_Time);
  LED4 = LED_ON;
  Delay(Cycle_Time - LED_Time);
}
/***************************

//主函數(shù)

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

void main(void)

{
  LED_Init(); //初始化 LED 燈控制 IO 口
  Key_Init();

  while(1) //死循環(huán)
  {
key = Key_Scan();
if(on_off == ON){
   PWM_Control();
}
  }
}

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