ARDUINO MEGA Functions Sensors

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=== Analog ===
 
=== Analog ===
 
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! style="text-align:left; border-style: solid; border-width: 0px 0px 1px 0px"|Sensor Type:
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| style="text-align:left; border-style: solid; border-width: 1px 0px 1px 0px"|'''No Sensor'''
 
| style="text-align:left; border-style: solid; border-width: 1px 0px 1px 0px"|'''No Sensor'''
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|style="text-align:left; border-style: solid; border-width: 0px 0px 1px 0px"|Use an analog pin as a digital input (not currently supported)
 
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|style="text-align:left; border-style: solid; border-width: 0px 0px 1px 0px"|'''Digital Out'''
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|style="text-align:left; border-style: solid; border-width: 0px 0px 0px 0px"|'''Digital Out'''
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|style="text-align:left; border-style: solid; border-width: 0px 0px 1px 0px"|Use an analog pin as a digital output (not currently supported)
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|style="text-align:left; border-style: solid; border-width: 0px 0px 0px 0px"|Use an analog pin as a digital output (not currently supported)
 
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Revision as of 13:23, 11 May 2012

ARDUINO → Functions and Variables → ARDUINO MEGA Functions Sensors


Contents
Color Key
Function:
Variable:


Information

The Arduino MEGA has 16 analog sensor ports and 53 digital sensor ports.

Analog

Sensor Type: Comments:
No Sensor No Sensor Attached. Pin is disabled.
Analog Standard Analog Input (0-1023), no modification to raw value.
Potentiometer Standard Analog Input (0-1023), no modification to raw value.
Light Sensor Standard Analog Input (0-1023), no modification to raw value.
Line Follower Standard Analog Input (0-1023), no modification to raw value.
Gyro Sensor Support for VEX Gyro Sensor. See documentation here.
Accelerometer Support for VEX Accelerometer. See documentation here.
Digital In Use an analog pin as a digital input (not currently supported)
Digital Out Use an analog pin as a digital output (not currently supported)


Digital

No Sensor No Sensor Attached. Pin is disabled.
Touch Digital Input for touch sensors. (reversed from "Digital In" command)
Quadrature Encoder (Two Pins) Support for VEX Quadrature Encoder. See documentation here.
LED to Vcc Pin configured as digital output with reversed logic (for LEDs) (0 = LED on, 1 = LED off)
Digital In Pin configured as digital input with internal "Pull-Up" resistor enabled.
Digital Out Pin configured as digital output.
Digital High Inpedance Pin configured as digital input without the "Pull-Up" resistor enabled.
Sonar [Ping] Support for Parallax Ping Sonar Sensor (returns distance in cm, mm, inches, raw)
Sonar [SRP-04] (Two Pins) Support for VEX Robotics Sonar Sensor (returns distance in cm, mm, inches, raw)



SensorType

TSensorTypes SensorType[tSensors sensor]
(TSensorTypes) The SensorType array is used to manually specify what type of sensor is connected to a specific pin. Most users should not have to use this functionality and should use the Motors and Sensor Setup instead.


Parameter Explanation Data Type
sensor A sensor port or name tSensors 


SensorType[dgtl3] = sensorTouch;  // set digital pin #3 to be of type sensorTouch


SensorValue

word SensorValue[tSensors sensor]
(word) This array value will return and modify the value of the sensor. When a pin is set as an "input" the SensorValue array command will return the value from the sensor attached to that pin. When a pin is set as an "output", the SensorValue array can be written to set the output value of the pin (typically Digital Outs will be set to 0 for Low and 1 for High).


Parameter Explanation Data Type
sensor A sensor port or name tSensors 


while(SensorValue[dgtl6] == 0) //Loop while digital pin #6 is low (set to zero)
{
   motor[motor_2] = 63;   // Motor pin #2 is run at half (63) power forward
   motor[motor_3]  = 63;   // Motor pin #3 is run at half (63) power forward
}
Writing to digitalOut 
#pragma config(Sensor, dgtl24, dOut,           sensorDigitalOut)
//*!!Code automatically generated by 'ROBOTC' configuration wizard               !!*//
task main()
{
  while(true)               // infinite loop to keep the program running
  {
    SensorValue[dOut] = 1;  // set the value of 'dOut' to 1
    wait1Msec(1000);        // wait 1 second
    SensorValue[dOut] = 0;  // set the value of 'dOut' to 0
    wait1Msec(1000);        // wait 1 second
  }
}
Reading from digitalIn 
#pragma config(Sensor, dgtl25, dIn,            sensorDigitalIn)
//*!!Code automatically generated by 'ROBOTC' configuration wizard               !!*//
task main()
{
  int incomingSensor;                     // create int variable, 'incomingSensor'
  while(true)                             // infinite loop to keep the program running
  {
    incomingSensor = SensorValue[dIn];  // set the value of 'incomingSensor' to the value of 'dIn'
  }
}
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