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how to use ultrasonic MAX Sonar EZ1

 
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siput



Joined: 14 Mar 2010
Posts: 3

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how to use ultrasonic MAX Sonar EZ1
PostPosted: Mon Apr 19, 2010 1:55 am     Reply with quote
hello there.
Can someone teach me how to use simple coding for this sensor ?
I have done code on my own for this sensor by trial and error practise, but no output was produced.
I just want to look at the LED as output high when the sensor has detected that the voltage is higher than 2.5 V.
Coding that I have done is like below.

Hopefully someone can teach me about this sensor.
Code:

void main()
{
   float data1;
   long adcValue[3];
   int i;
   
   setup_adc_ports(ALL_ANALOG);
   setup_adc(ADC_CLOCK_DIV_32);
   setup_psp(PSP_DISABLED);
   setup_spi(SPI_SS_DISABLED);
   setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
   setup_timer_1(T1_DISABLED);
   setup_timer_2(T2_DIV_BY_1,118,1);
   setup_ccp1(CCP_PWM);
   set_pwm1_duty(238);
   setup_comparator(NC_NC_NC_NC);
   setup_vref(FALSE);


    while(1){

   for(i=0;i<2;i++){
   set_adc_channel(i);
   delay_us(10);
   adcValue[i]=read_adc();
   }

   data1 = (float) (adcValue[0])*5/1023;
 
   printf("Analog Value1 = %f ", data1);
 
   delay_ms(1000);
 
   if((data1>2.50))
   {
      output_b(0b00000001);
   }
   else
   {
      output_b(0b00000000);
   }
   
   }   
}
bkamen



Joined: 07 Jan 2004
Posts: 1611
Location: Central Illinois, USA

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PostPosted: Mon Apr 19, 2010 8:55 am     Reply with quote
You should post the FULL code, and your compiler version first.

So just edit your starting post with this information.

If this *IS* all of the code, then you're missing the mandatory startup items required to configure the PIC.

-Ben
_________________
Dazed and confused? I don't think so. Just "plain lost" will do. :D
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