108 lines
2.8 KiB
Arduino
108 lines
2.8 KiB
Arduino
|
/****************************************************************
|
||
|
|
AmbientLightToneAC.ino
|
||
|
|
|
||
|
|
Tests the ambient light sensing abilities of the
|
||
|
|
APDS-9930. Configures APDS-9930 over I2C and polls the sensor for
|
||
|
|
ambient light levels, which are displayed over the
|
||
|
|
serial console.
|
||
|
|
|
||
|
|
Hardware Connections:
|
||
|
|
|
||
|
|
IMPORTANT: The APDS-9930 can only accept 3.3V!
|
||
|
|
|
||
|
|
Arduino Pin APDS-9930 Board Function
|
||
|
|
|
||
|
|
3.3V VCC Power
|
||
|
|
GND GND Ground
|
||
|
|
A4 SDA I2C Data
|
||
|
|
A5 SCL I2C Clock
|
||
|
|
|
||
|
|
Connect speakers to the correct pins. Check toneAC.h for more info.
|
||
|
|
|
||
|
|
Distributed as-is; no warranty is given.
|
||
|
|
****************************************************************/
|
||
|
|
|
||
|
|
#define DUMP_REGS
|
||
|
|
|
||
|
|
#include <Wire.h>
|
||
|
|
#include <APDS9930.h>
|
||
|
|
#include <toneAC.h>
|
||
|
|
|
||
|
|
// Global Variables
|
||
|
|
APDS9930 apds = APDS9930();
|
||
|
|
float ambient_light = 0; // can also be an unsigned long
|
||
|
|
uint16_t ch0 = 0;
|
||
|
|
uint16_t ch1 = 1;
|
||
|
|
float max_light = 0;
|
||
|
|
|
||
|
|
void setup() {
|
||
|
|
//analogReference(EXTERNAL);
|
||
|
|
|
||
|
|
// Initialize Serial port
|
||
|
|
Serial.begin(9600);
|
||
|
|
Serial.println();
|
||
|
|
Serial.println(F("--------------------------------"));
|
||
|
|
Serial.println(F("APDS-9930 - Ambient light sensor"));
|
||
|
|
Serial.println(F("--------------------------------"));
|
||
|
|
|
||
|
|
// Initialize APDS-9930 (configure I2C and initial values)
|
||
|
|
if ( apds.init() ) {
|
||
|
|
Serial.println(F("APDS-9930 initialization complete"));
|
||
|
|
} else {
|
||
|
|
Serial.println(F("Something went wrong during APDS-9930 init!"));
|
||
|
|
}
|
||
|
|
|
||
|
|
// Start running the APDS-9930 light sensor (no interrupts)
|
||
|
|
if ( apds.enableLightSensor(false) ) {
|
||
|
|
Serial.println(F("Light sensor is now running"));
|
||
|
|
} else {
|
||
|
|
Serial.println(F("Something went wrong during light sensor init!"));
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef DUMP_REGS
|
||
|
|
/* Register dump */
|
||
|
|
uint8_t reg;
|
||
|
|
uint8_t val;
|
||
|
|
|
||
|
|
for(reg = 0x00; reg <= 0x19; reg++) {
|
||
|
|
if( (reg != 0x10) && \
|
||
|
|
(reg != 0x11) )
|
||
|
|
{
|
||
|
|
apds.wireReadDataByte(reg, val);
|
||
|
|
Serial.print(reg, HEX);
|
||
|
|
Serial.print(": 0x");
|
||
|
|
Serial.println(val, HEX);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
apds.wireReadDataByte(0x1E, val);
|
||
|
|
Serial.print(0x1E, HEX);
|
||
|
|
Serial.print(": 0x");
|
||
|
|
Serial.println(val, HEX);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// Wait for initialization and calibration to finish
|
||
|
|
delay(500);
|
||
|
|
}
|
||
|
|
|
||
|
|
void loop() {
|
||
|
|
|
||
|
|
// Read the light levels (ambient, red, green, blue)
|
||
|
|
if ( !apds.readAmbientLightLux(ambient_light) ||
|
||
|
|
!apds.readCh0Light(ch0) ||
|
||
|
|
!apds.readCh1Light(ch1) ) {
|
||
|
|
Serial.println(F("Error reading light values"));
|
||
|
|
} else {
|
||
|
|
Serial.print(F("Ambient: "));
|
||
|
|
Serial.print(ambient_light);
|
||
|
|
Serial.print(F(" Ch0: "));
|
||
|
|
Serial.print(ch0);
|
||
|
|
Serial.print(F(" Ch1: "));
|
||
|
|
Serial.println(ch1);
|
||
|
|
|
||
|
|
unsigned long freq = map(ch0, 0, 1024, 60, 16000);
|
||
|
|
toneAC(freq, 10, 50, true);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Wait 1 second before next reading
|
||
|
|
delay(50);
|
||
|
|
}
|