中微SC8p8022单片机双色无级调光，触摸，PWM控制程序 -

#include <sc.h>
#include "Touch_Kscan_Library.h"
volatile unsigned int pwm_duty,pwm_duty1,pwm_duty2,num;
volatile unsigned char MainTime,touch_count = 0;
volatile bit B_MainLoop,state=0;
volatile unsigned int Time;
void delay(int count) {
for (int i = 0; i < count; i++) {
for (int j = 0; j < 100; j++) {
}
}
}
//系统初始化
void Init_System()
{
asm("nop");
asm("clrwdt");
INTCON = 0; //禁止中断
OSCCON = 0X72; //配置振荡为8M
OPTION_REG = 0;
PORTB = 0;
PIE1 = 2;
PR2 = 250; //8M下将TMR2设置为125us中断
//TRISB=0B00010100;
TRISB=0;
PWMCON0=0;
PWMTL=0XEF;
PWMT4L=0XEF;
PWMTH=0B00001111;
PWMD23H=00;
PWMD3L=0X0F;
PWMD4L=0X0F;
PWMIF=0;
PWMCON0 &= ~(0b00011000);
T2CON = 4; //使能定时器2
INTCON = 0XC0; //使能中断
}
void Refurbish_Sfr()
{
//刷新中断相关控制寄存器
PIE1 = 2;
PR2 = 250;
INTCON = 0XC0;
if (4 != T2CON)
T2CON = 4;
}
void set_pwm_duty_cycle(unsigned int pwm3_duty, unsigned int pwm4_duty)
{
pwm3_duty=pwm3_duty/4;
pwm4_duty=pwm4_duty/4;
// 写入PWM3占空比（8位）
PWMD23H = ((pwm3_duty >> 8) & 0x03)<<4; // 高2位
PWMD3L = pwm3_duty&0xFF ; // 低8位
// 写入PWM4占空比（10位）
PWMTH = ((pwm3_duty >> 8) & 0x03)<<4;
PWMD4L = pwm4_duty&0xFF;
PWMCON0=0B00011000;
}
/***********************************************************
键处理函数
***********************************************************/
void KeyServer()
{
static unsigned char KeyOldFlag = 0;
static bit Leave,state=0;
unsigned int Tim;
// 有键按下
if (KeyFlag[0])
{
delay(6);//delay(8);
if(KeyFlag[0]){
if(Leave)Leave = 0; //有键按下清松手标志
Time++;
if(Time>200)
{
Tim++;
if(Tim>=3000){
Tim=0;
if(state==0)
{
num++; //增加亮度
if(num>=800)
{
num=800;
}
}
if((state==1) && (num>8))
{
num--; //减少加亮度
if(num<=12)
{
num=12;
}
}
switch(touch_count)
{
case 1:
pwm_duty1=num;
set_pwm_duty_cycle(0,pwm_duty1);
break;
case 2:
pwm_duty=num;
set_pwm_duty_cycle(pwm_duty, 0);
break;
case 3:
pwm_duty2=num;
set_pwm_duty_cycle(pwm_duty2, pwm_duty2);//
break;
case 4:
break;
}
//num=pwm_duty;
}
}
KeyOldFlag = KeyFlag[0];
}
}
else //没键按下
{
if(Leave == 0) //无键按下置位松手标志
{
Leave = 1;
state = ~state; //松手后只执行一次
}
if((KeyOldFlag!=KeyFlag[0]) && Time<200) //短按处理
{
delay(4);
touch_count++;
switch (touch_count)
{
case 1:
{set_pwm_duty_cycle(0, pwm_duty1); // PWM4 亮黄
num=pwm_duty1;
break;}
case 2:
{set_pwm_duty_cycle(pwm_duty, 0); // PWM3 亮
num=pwm_duty;
break;}
case 3:
{set_pwm_duty_cycle(pwm_duty2,pwm_duty2); // 都亮
num=pwm_duty2;
break;}
case 4:
{//set_pwm_duty_cycle(0, 0); // 关
//PWMD3L=0;
//PWMD4L=0;
PWMCON0 &= ~(0b00011000);
touch_count=0;
break;}
}
}
Time=0;
KeyOldFlag = 0;
}
}
/***********************************************************
中断服务函数
***********************************************************/
void interrupt Isr_Timer()
{
if (TMR2IF)
{ //若只使能了一个中断源,可以略去判断
TMR2IF = 0;
if (++MainTime >= 20)
{
MainTime = 0;
B_MainLoop = 1;
}
}
else
{
PIR1 = 0;
}
}
/***********************************************************
主循环
***********************************************************/
void main()
{
Init_System();
pwm_duty=12;
pwm_duty1=12;
pwm_duty2=12;
while (1)
{
if (B_MainLoop)
{
B_MainLoop = 0;
CLRWDT();
CheckTouchKey();
Refurbish_Sfr();
KeyServer();
}
}
}

复制代码