How to make PB2 & PB3 pin high in atmega8

[nikita]

Hi all,

 

I am using Atmega8 in my lighting control application project where i want to make PB1,PB2 & PB3 pin to high.

But my PB2 & PB3 pin not goes to high,while my PB1 pin make high.
When  PB2 & PB3 pin make high but when im integrate with touch it will not work.

Iam using PORTC as a intra port & PORTB-D as a inter port for touch keys & slider.

port pin confg. for atmega8 is as shown below:

 

Total Sensors Selected : 6

    Sensor        Channel    SNS,SNSK
    Button0        Channel0    PC0,PC1
    Button1        Channel1    PC2,PC3
    Button2        Channel2    PC4,PC5

    Button3        Channel3    PB0,PD0
    Button4        Channel4    PB4,PD4
    slider0        Channel5    PB5,PD5
    slider0        Channel6    PB6,PD6
    slider0        Channel7    PB7,PD7

With out integrate the touch with software my PB2, 3 pin goes to high,but when integrate touch with my software PB2, 3 pin not make it high.

Can any one suggest me the solution over this.

Thanks.

[AJISH ALFRED]

Hi Nikita,

Suggest you to post your circuit diagram and code so that it will be easy for us to help you out.

[nikita]

Thanks a lot for your reply.

For the schematic actually there is no such ckt made because i am working on touch where i made a slider and touch keys on PCB and Resistor and capacitor connection.

I am using PONYPROG for ISP programming for my atmega8 controller.

 

Code:

 

int main( void )
{
    DDRB = 0xFE;      //PB1,2,3 set as output
   PORTB = 0xFE;    //PB1,2,3 set high

/*

---

Touch Mask

---

*/

      #define QTOUCH_STUDIO_MASKS    1
    #define NUMBER_OF_PORTS    2

    #define SNS1    C
    #define SNSK1    C

    #define SNS2    B
    #define SNSK2    D

    #ifdef QTOUCH_STUDIO_MASKS    //5key+slider
    SNS_array[0][0]= 0x15;
    SNS_array[0][1]= 0x00;
    SNS_array[1][0]= 0xe1;
    SNS_array[1][1]= 0x10;

    SNSK_array[0][0]= 0x2a;
    SNSK_array[0][1]= 0x00;
    SNSK_array[1][0]= 0xe1;
    SNSK_array[1][1]= 0x10;
    #endif
/*

---

*/
   /*disabling all pull ups for touch application*/
    SFIOR |= (1u << PUD);

    /* Configure the Sensors as keys or Keys With Rotor/Sliders in this function */
        config_sensors();

    /* initialise touch sensing */
       qt_init_sensing();

    /*  Set the parameters like recalibration threshold, Max_On_Duration etc in this function by the user */
        qt_set_parameters( );

    /* configure timer ISR to fire regularly */
        init_timer1_isr();
        qt_filter_callback = 0;

  /* enable interrupts */
        __enable_interrupt();

    /* loop forever */
while(1)
{  

      if( time_to_measure_touch )
      {
             SFIOR |= (1u << PUD);
             read_touch();

       }
    
    {
        get_key();                    //Getting the Status of Sensor
    }
} //while close

} //main closed

static void init_timer1_isr( void )
{
    /*  set timer compare value (how often timer ISR will fire) */
    OCR1A = ( TICKS_PER_MS * qt_measurement_period_msec);

    /*  enable timer ISR */
    TIMSK |= (1u << OCIE1A);

    /*  timer prescaler = system clock / 8  */
    TCCR1B |= (1u << CS11);

    /*  timer mode = CTC (count up to compare value, then reset)    */
    TCCR1B |= (1u << WGM12);

    /*    Initialize counter for heartbeat       */
    hrtbeat=20;
}

ISR(TIMER1_COMPA_vect)
{
    /*  set flag: it’s time to measure touch    */
    time_to_measure_touch = 1u;

    /*  update the current time */
    current_time_ms_touch += qt_measurement_period_msec;
//sprintf(“%u/n/r”,current_time_ms_touch);
   hrtbeat–;
    if(hrtbeat==0)
    {
     //PORTC^=(1<<PC6);
     hrtbeat=20;
    }
}

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