131 lines
No EOL
3.4 KiB
C++
Executable file
131 lines
No EOL
3.4 KiB
C++
Executable file
/****************************************************************
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ProximityLED.ino
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Davide Depau
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December 11, 2015
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https://github.com/Davideddu/APDS9930
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https://github.com/sparkfun/APDS-9930_RGB_and_Gesture_Sensor
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Tests the proximity sensing abilities of the APDS-9930.
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Configures the APDS-9930 over I2C and polls for the distance to
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the object nearest the sensor, then turns on an LED accordingly.
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Hardware Connections:
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IMPORTANT: The APDS-9930 can only accept 3.3V!
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Arduino Pin APDS-9930 Board Function
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3.3V VCC Power
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GND GND Ground
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A4 SDA I2C Data
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A5 SCL I2C Clock
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10 (PWM) LED Anode
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Resources:
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Include Wire.h and APDS9930.h
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Development environment specifics:
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Written in Sublime Text + Stino + Arduino 1.7.2
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Tested with Arduino Uno + level shifter
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This code is chocolateware; if you see me at the grocery store,
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and you've found our code helpful, please buy us me a chocolate bar! :D
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Distributed as-is; no warranty is given.
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****************************************************************/
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#define DUMP_REGS
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#define PWM_LED_PIN 10
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#include <Wire.h>
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#include <APDS9930.h>
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// Global Variables
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APDS9930 apds = APDS9930();
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uint16_t proximity_data = 0;
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int proximity_max = 0;
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void setup() {
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//analogReference(EXTERNAL);
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pinMode(PWM_LED_PIN, OUTPUT);
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// Initialize Serial port
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Serial.begin(9600);
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Serial.println();
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Serial.println(F("------------------------"));
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Serial.println(F("APDS-9930 - ProximityLED"));
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Serial.println(F("------------------------"));
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// Initialize APDS-9930 (configure I2C and initial values)
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if ( apds.init() ) {
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Serial.println(F("APDS-9930 initialization complete"));
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} else {
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Serial.println(F("Something went wrong during APDS-9930 init!"));
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}
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// Adjust the Proximity sensor gain
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if ( !apds.setProximityGain(PGAIN_1X) ) {
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Serial.println(F("Something went wrong trying to set PGAIN"));
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}
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// Start running the APDS-9930 proximity sensor (no interrupts)
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if ( apds.enableProximitySensor(false) ) {
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Serial.println(F("Proximity sensor is now running"));
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} else {
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Serial.println(F("Something went wrong during sensor init!"));
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}
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#ifdef DUMP_REGS
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/* Register dump */
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uint8_t reg;
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uint8_t val;
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for(reg = 0x00; reg <= 0x19; reg++) {
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if( (reg != 0x10) && \
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(reg != 0x11) )
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{
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apds.wireReadDataByte(reg, val);
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Serial.print(reg, HEX);
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Serial.print(": 0x");
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Serial.println(val, HEX);
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}
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}
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apds.wireReadDataByte(0x1E, val);
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Serial.print(0x1E, HEX);
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Serial.print(": 0x");
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Serial.println(val, HEX);
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#endif
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}
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void loop() {
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// Read the proximity value
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if ( !apds.readProximity(proximity_data) ) {
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Serial.println("Error reading proximity value");
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} else {
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Serial.print("Proximity: ");
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Serial.print(proximity_data);
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// This is an ugly hack to reduce sensor noise.
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// You may want to adjust POFFSET instead.
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/*
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proximity_data -= 200;
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if (proximity_data > 50000) {
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proximity_data = 0;
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}
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if (proximity_data > proximity_max) {
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proximity_max = proximity_data;
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}
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proximity_data = map(proximity_data, 0, proximity_max, 0, 1023);
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*/
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Serial.print(F(" Remapped: "));
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Serial.println(proximity_data);
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analogWrite(PWM_LED_PIN, proximity_data);
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}
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// Wait 250 ms before next reading
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delay(10);
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} |