Analogue i/p Vs web server

Hi. Thanks for the reply. Sorry for using paint, it was the easiest software at hand for such a simple schematic. The code I used is as follows:

.............................................................................................................................

#include "taskFlyport.h"

void FlyportTask()
{
WFConnect(WF_DEFAULT);
while (WFStatus != CONNECTED);
UARTWrite(1,"Flyport connected... hello world!\r\n");

int sensor_in;
 
while(1)
  {
  sensor_in = ADCVal(1);
 
    if( sensor_in < 200 )
    {
    IOPut(d4out, off);
    }
    else{
    IOPut(d4out, on);
    }
}
}

.............................................................................................................................

Its very simple and works fine when the webserver is off but the analogue input goes nuts when the webserver is open and the LED starts flashing. I'm probably missing something very simple. And yes I am using the newest IDE 2.1.

Thanks for the help.

Creed. 

Thanks for the reply. Got it working. With the while(1) loop blank, the analogue input was always a little jumpy. I tried using the pull down resistor and it had the effect of increasing the sensor range i.e. It may be programmed to activate the LED at 50 ~= (roughly) 3/4 of a foot. The larger the pull down resistor used the greater this distance became. Useful to know so I'm glad it came to my attention but it didn't solve the issue. Inserting the delay done the trick nicely. The code that worked is as follows:

#include "taskFlyport.h"

//int fin_command = 0;

void FlyportTask()
{
WFConnect(WF_DEFAULT);
while (WFStatus != CONNECTED);
UARTWrite(1,"Flyport connected... hello world!\r\n");

IOInit(d1out, out);
 

BYTE pwm1 = 1;          //pwm number 1
BYTE pwm5 = 3;   //pwm number 5

PWMInit(pwm1,50,2.75);  //..........................LEFT
  PWMInit(pwm5,50,10);  
 

int sensor_in;
 
while(1)
  {
 
   sensor_in = ADCVal(1);

    if( sensor_in < 50 )
    {
    IOPut(d4out, off);
    vTaskDelay(1);     
    

//......................... below sets the servo on

   PWMOn(d1out,pwm1);  //50hz 5% duty => 1 ms pulse over a 20ms timeperiod
   vTaskDelay(50);
   
   PWMOn(d1out,pwm5);  //50hz 10% duty => 2 ms pulse over a 20ms timeperiod
   vTaskDelay(50);
    }
    else{
    IOPut(d4out, on);
    vTaskDelay(1);
   

//............................. below turns the servo off
    PWMOff(pwm1);

    PWMOff(pwm5);
    }
}
}

The webserver display is still very jumpy e.g. If I stand stationary in front of the sensor its value will oscillate by a value between 30 - 50. The LED also blinks when the sensor has been activated. My use for the sensor is to activate a servo motor when an object comes within range and the brief delay doesn't affect its operation. This is all in aid of my final year project in electronics. When its all done I'll upload the report and a few videos I took throughout the year. it may be useful to someone as everything I'v done with the flyport is fairly basic but functional.

Thanks alot for your help. 

S Creed