Reads an analog input pin, maps the result to a range from 0 to 255 and uses the result to set the pulsewidth modulation (PWM) of an output pin.
TI LaunchPad
Educational BoosterPack MKII
None. This basic example just uses your LaunchPad and BoosterPack only.
/* Educational BoosterPack MK II http://boosterpackdepot.info/wiki/index.php?title=Educational_BoosterPack_MK_II Microphone input, LED output, serial output based on Analog input, analog output, serial output Reads an analog input pin, maps the result to a range from 0 to 255 and uses the result to set the pulsewidth modulation (PWM) of an output pin. Also prints the results to the serial monitor. The circuit: * Microphone (analog) attached to pin 6. Neutral reading is at the center of the analog scale ~2048 Higher sound input results in higher dynamic range at both ends of the analog scale [0,4096] * LED connected from pin 39 to ground created 29 Dec. 2008 modified 30 Aug 2011 by Tom Igoe modified 03 Dec 2013 by Dung Dang for Educational BoosterPack MK II This example code is in the public domain. */ // These constants won't change. They're used to give names // to the pins used: const int analogInPin = 6; // Analog input pin that the potentiometer is attached to const int analogOutPin = 39; // Analog output pin that the LED is attached to int sensorValue = 0; // value read from the pot int outputValue = 0; // value output to the PWM (analog out) void setup() { // By default MSP432 has analogRead() set to 10 bits. // This Sketch assumes 12 bits. Uncomment to line below to set analogRead() // to 12 bit resolution for MSP432. //analogReadResolution(12); // initialize serial communications at 9600 bps: Serial.begin(9600); } void loop() { // read the analog in value: sensorValue = analogRead(analogInPin); // map it to the range of the analog out: outputValue = map(sensorValue, 0, 4096, 0, 255); // change the analog out value: analogWrite(analogOutPin, outputValue); // print the results to the serial monitor: Serial.print("microphone = " ); Serial.print(sensorValue); Serial.print("\t output = "); Serial.println(outputValue); // wait 10 milliseconds before the next loop // for the analog-to-digital converter to settle // after the last reading: delay(10); }