The document configures a magnetic sensor and displays its real-time readings over time. It initializes the magnetic sensor driver, stores 100 readings in an array, and plots them on the display. It also tracks and displays the maximum reading and calibration factor.

1. #pragma config(Sensor, S1, HTMAG, sensorRawValue)
#include "drivers/HTMAG-driver.h"
task main(){
int readValue;
int displayValue;
int maxReadValue;
float devideBy = 2.6;
int sensorValues[100];
int i;
nMotorEncoder[motorA] = 0;
nxtDisplayCenteredTextLine(3, "press orange");
nxtDisplayCenteredTextLine(4, "to configure");
while(nNxtButtonPressed == -1){}
if(nNxtButtonPressed == 3){
eraseDisplay();
while(nNxtButtonPressed == 3){}
HTMAGstartCal(HTMAG);
}
while(true){
devideBy = (nMotorEncoder[motorA]/10)+2.6;
readValue = HTMAGreadVal(HTMAG);
displayValue = readValue/devideBy;
sensorValues[99] = displayValue*0.52;
for(i=0; i<100; i++){
if(i != 99){
sensorValues[i] = sensorValues[i+1];
}
}
if(readValue > maxReadValue){
maxReadValue = readValue;
}
eraseDisplay();
for(i=0; i<100; i++){
nxtDrawLine(i, 0, i, sensorValues[i]);
}
nxtDisplayStringAt(0, 63, " ");
nxtDisplayStringAt(3, 63, "Max: %3d", maxReadValue);
nxtDisplayStringAt(82, 63, "%f", devideBy);
wait10Msec(20);
}
}