[nhanh0112]

Viết hơi lủng củng tý, nhưng đảm bảo chạy. 8 kênh (active high), chân cẳng tùy bạn định nghĩ lại (mặc định là portB). Tín hiệu audio vào AN0 (biên độ max là 5V).
Chúc thành công!

/**********************************************
***********************************************/
#include <16F716.h>
#device adc=8
#FUSES WDT                    //No Watch Dog Timer
#FUSES HS                       //High speed Osc (> 4mhz for PCM/PCH) (>10mhz for PCD)
#FUSES NOPUT                    //No Power Up Timer
#FUSES PROTECT                //Code not protected from reading
#FUSES BORV40                   //Brownout reset at 4.0V
#FUSES NOBROWNOUT                 //Reset when brownout detected
#FUSES RESERVED                 //Used to set the reserved FUSE bits

#use delay(clock=12000000)

#define ch1 PIN_B7
#define ch2 PIN_B6
#define ch3 PIN_B4
#define ch4 PIN_B5
#define ch5 PIN_B2
#define ch6 PIN_B3
#define ch7 PIN_B1
#define ch8 PIN_B0
//#include "module.c"

char value;
char PWM[8];
//#INT_TIMER2
void time()
{
static int16 mode=0;
static char i=0,temp,j,flag[8];
static char led1=0,led2=1,led3=2,led4;
static int1 init=0,clear;
  /*
*/
temp=READ_ADC();
if(temp>27)
   {temp=temp-27;}
if(temp>67)
   {mode=1500;}
if(mode)   
   {
   mode--;
   if(init>0)
      {
      init=0;
      PWM[0]=0;
      PWM[1]=0;
      PWM[2]=0;
      PWM[3]=0;
      PWM[4]=0;
      PWM[5]=0;
      PWM[6]=0;
      PWM[7]=0;
      }
   if(value<temp){value=temp;}
   if(value>31)
      {
      if(PWM[0]<100)PWM[0]+=10;flag[0]=50;
      if(value>40)
         {
         if(PWM[1]<100)PWM[1]+=10;flag[1]=50;
         if(value>49)
            {
            if(PWM[2]<100)PWM[2]+=10;flag[2]=50;
            if(value>58)
               {
               if(PWM[3]<100)PWM[3]=10;flag[3]=50;
               if(value>67)
                  {
                  if(PWM[4]<100)PWM[4]+=10;flag[4]=50;
                  if(value>76)
                     {
                     if(PWM[5]<100)PWM[5]+=10;flag[5]=50;
                     if(value>85)
                        {
                        if(PWM[6]<100)PWM[6]+=10;flag[6]=50;
                        if(value>94)
                           {if(PWM[7]<100)PWM[7]+=10;flag[7]=50;}
                        else{if(flag[7]==0)PWM[7]=0;}
                        }
                     else{if(flag[6]==0)PWM[6]=0;}
                     }
                  else{if(flag[5]==0)PWM[5]=0;}
                  }
               else{if(flag[4]==0)PWM[4]=0;}
               }
            else{if(flag[3]==0)PWM[3]=0;}
            }
         else{if(flag[2]==0)PWM[2]=0;}
         }
      else{if(flag[1]==0)PWM[1]=0;}
      }
   else{if(flag[0]==0)PWM[0]=0;}
   if(value>10){value-=5;}
   clear=0;
   for(j=0;j<8;j++)
      {
      if(clear)
         {
         flag[7-j]=0;
         }
      if(flag[7-j]>0)
         {
         flag[7-j]=flag[7-j]-1;
         if(flag[7-j]==0)
            {PWM[7-j]=0;}
         clear=1;
         }
      else{flag[7-j]=0;}
      }
   init=0;
   }
else
   {
   if(init<=0)
      {
      init=1;
      PWM[0]=25;
      PWM[1]=50;
      PWM[2]=100;
      PWM[3]=0;
      PWM[4]=0;
      PWM[5]=0;
      PWM[6]=0;
      PWM[7]=0;
      i=0;led1=0;led2=1;led3=2;
      }
   PWM[led1]=PWM[led1]-1;
   PWM[led2]=PWM[led2]-1;
   PWM[led3]=PWM[led3]-2;
   led4=led3+1;if(led4>7){led4=led4-8;}
   PWM[led4]=PWM[led4]+4;
   if(PWM[led1]==0)
      {
      i++;
      if(i>7){i=0;}
      led1=i;
      led2=i+1;
         if(led2>7){led2=led2-8;}
      led3=i+2;
         if(led3>7){led3=led3-8;}         
      PWM[led3]=100;
      }
   }
}


void SPWM()
{
static char count,counttime;
   count++;
   if(count>100)
      {
      count=0;
      if(counttime++>10)
         {
         counttime=0;
         time();
         }
      if(PWM[0]>0){output_high(ch1);}
      if(PWM[1]>0){output_high(ch2);}
      if(PWM[2]>0){output_high(ch3);}
      if(PWM[3]>0){output_high(ch4);}
      if(PWM[4]>0){output_high(ch5);}
      if(PWM[5]>0){output_high(ch6);}
      if(PWM[6]>0){output_high(ch7);}
      if(PWM[7]>0){output_high(ch8);}
      }
   if(count==PWM[0])
      {output_low(ch1);}
   if(count==PWM[1])
      {output_low(ch2);}
   if(count==PWM[2])
      {output_low(ch3);}
   if(count==PWM[3])
      {output_low(ch4);}
   if(count==PWM[4])
      {output_low(ch5);}
   if(count==PWM[5])
      {output_low(ch6);}
   if(count==PWM[6])
      {output_low(ch7);}
   if(count==PWM[7])
      {output_low(ch8);}
}
void main()
{
//setup_timer_0(RTCC_INTERNAL);
//enable_interrupts(INT_timer0);
//enable_interrupts(GLOBAL);
setup_adc_ports(AN0_AN1_AN3);
setup_adc(ADC_CLOCK_DIV_2);

//setup_timer_2(T2_DIV_BY_16,249,16); //20kHz
//enable_interrupts(INT_TIMER2);
//enable_interrupts(GLOBAL);

PWM[0]=0;
PWM[1]=0;
PWM[2]=0;
PWM[3]=0;
PWM[4]=0;
PWM[5]=0;
PWM[6]=0;
PWM[7]=0;

set_adc_channel(0);
setup_wdt(WDT_18MS);
while(TRUE)
   {
   restart_wdt();
   SPWM();
  }
}

PS: Nếu chạy đc nhớ quảng cáo giùm nha )