USB HID + EXTERNAL INTERRUPT

[anu007]

Hello i'm using pic18f4550 and i also use an external interrupt to change LCD display bu the code doesn't work. plzz help me

Code: Select all

  

void interrupt()
  {

   if(PIR2.USBIF==1)
   {
   USB_Interrupt_Proc();
   PIR2.USBIF=0;
   }
   
   if(INTCON.T0IF==1  )
   {
   SW++;
   INTCON.T0IF==0;
   return;
   }

  }
void INCurrent_Read()           //FIELD CURRENT
  {
   vdc1 = ADC_Read(0);
   Vdc1 = Vdc1*4.89;
   Vdc1 = Vdc1/10;
   message3[8]  = (vdc1/100) +48 ;
   message3[9]  = (vdc1/10)%10 + 48;
   message3[11] = (vdc1/1)%10+48;
  }
void OUTCurrent_Read()   //ARM CURRENT
  {
   vdc1 = ADC_Read(1);
   Vdc1 = Vdc1*4.89;
   Vdc1 = Vdc1/10;
   message4[8]  = (vdc1/100)%10 +48 ;
   message4[9]  = (vdc1/10)%10 + 48;
   message4[11] =  (vdc1)%10+48 ;
  }

void INVoltage_Read()
  {
   vdc1 = ADC_Read(2);
   Vdc1 = Vdc1*4.89;
   Vdc1 = Vdc1/10;
   message0[8] = (vdc1/100)%10 +48 ;
   message0[9] = (vdc1/10)%10 + 48;
   message0[10] =  (vdc1)%10+48 ;
  }

void OUTVoltage_Read()
 {
   vdc2 = ADC_Read(3);
   Vdc2 = Vdc2*4.89;
   Vdc2 = Vdc2/10;
   message1[8] = (vdc2/100)%10 +48 ;
   message1[9] = (vdc2/10)%10 + 48;
   message1[10] =  (vdc2)%10+48 ;
 }

void RPM_Measure()
 { T0CON =  0b01111000;
   TMR0L = 0;
   T0CON.TMR0ON = 1;
   delay_ms(250);
   T0CON.TMR0ON = 0;    // Stop the timer
   RPM = (TMR0L)*24.019;
   message2[4] = (RPM/1000)%10 +48 ;
   message2[5] = (RPM/100)%10 +48 ;
   message2[6] = (RPM/10)%10 + 48;
   message2[7] =  (RPM)%10+48 ;
 }
void main(void)
 {
  TRISA = 0b11111111;   // make PORTA all as input
  TRISB = 0b00000011;   // make PORTB all as output
  TRISD = 0b00000000;   // make PORTD C1-C4 as Output
  T0CON =  0b01111000;
  ADCON1 = 0b00001011;

  INTCON = 0b11010000;
  INTCON2.INTEDG0=0;
  Lcd_Init();                        // Initialize LCD
  Lcd_Cmd(_LCD_CLEAR);               // Clear display
  Lcd_Cmd(_LCD_CURSOR_OFF);          // Cursor off
  Lcd_Cmd(_LCD_CLEAR);
   while(1)
  {

    INCurrent_Read();
    OUTCurrent_Read();
    INVoltage_Read();
    OUTVoltage_Read();
    RPM_Measure();
    jump:

    if(SW==1)
    {
    Lcd_Out (1,1, message0);
    Lcd_Out (2,1, message3);
    }
    else if(SW==2)
    {
    Lcd_Out (1,1, message1);
    Lcd_Out (2,1, message4);
    }
    else if(SW==3)
    {
    Lcd_Out (1,1, message2);
    }
    else if(SW==4)
    {
    SW=1;
    goto jump;
    }
    
    for(cnt=0;cnt<3;cnt++)
    writebuff[0+cnt]=message0[8+cnt];
    for(cnt=0;cnt<3;cnt++)
    writebuff[3+cnt]=message1[8+cnt];
    for(cnt=0;cnt<4;cnt++)
    writebuff[6+cnt]=message2[4+cnt];
    for(cnt=0;cnt<4;cnt++)
    writebuff[10+cnt]=message3[8+cnt];
    for(cnt=0;cnt<4;cnt++)
    writebuff[14+cnt]=message4[8+cnt];
    for(cnt=18;cnt<64;cnt++)
    writebuff[cnt]=0;
           
    for(cnt=0;cnt<1;cnt++)
    {
      HID_Write(&writebuff,64);
    }
  }
 }

[filip]

Hi,

From your code I don't see that you are using external interrupt, only HID and Timer 0 interrupt. Could you please clarify your question ?

In the compiler's examples folder you will find examples for all of these interrupts, HID, Timer and External,
so you may use them as a starting point.

Also, I suggest that you try to debug the code using the mikroICD debugger, it is quite handy in these situations.

Regards,
Filip.