VCNL4020 Arduino Library Guide

The VCNL4020 datasheet provides comprehensive information on the chip's features, specifications, and functionalities. Below are some key highlights:

General Features

• The VCNL4020 is a fully integrated proximity and ambient light sensor.
• It includes an infrared emitter, ambient light sensor (ALS-PD), proximity sensor (PD), and signal conditioning IC.
• It operates on a supply voltage range of VDD: 2.5 V to 3.6 V and IR anode: 2.5 V to 5 V.
• Communication is via the I2C interface.
• It has an interrupt function and low standby current consumption of 1.5 μA.
• Applications include mobile devices, consumer electronics, and industrial displays. (Page 1)

Technical Specifications

• Operating temperature range is -25°C to +85°C.
• I2C Bus H-level range is 1.7 V to 5 V.
• Proximity distance up to 200 mm.
• 16-bit effective resolution for both proximity and ambient light. (Page 2)

Circuit and Application Information

• The chip contains a circuit block diagram and a test circuit.
• It also provides an application circuit that connects to a host microcontroller via I2C. (Page 3, 5)

I2C Interface and Registers

• The VCNL4020 contains seventeen 8-bit registers for operation control, parameter setup, and result buffering.
• All registers are accessible via I2C communication.
• The built-in I2C interface is compatible with all I2C modes (standard, fast, and high speed). (Page 6)

Register Functions

• Register #0 is for starting ambient light or proximity measurements and contains flag bits for data ready indication.
• Register #1 contains information about product ID and product revision.
• Register #2 is for setting the rate of proximity measurement.
• Register #3 is for setting the LED current value for proximity measurement.
• Register #4 is for setting ambient light parameters. (Page 6, 7)

We finished processing the whole document with the PDF Search plugin. What else would you like to know?

Great, let's start by defining the register addresses for the VCNL4020 chip. According to the datasheet, the VCNL4020 has seventeen user-accessible 8-bit registers. The register addresses range from 80h (register #0) to 90h (register #16) (Page 6).

Here's how you can define these registers in your Arduino library:

arduinoCopy code
// VCNL4020 Register Definitions
#define VCNL4020_REG_COMMAND 0x80 // Register #0 Command Register
#define VCNL4020_REG_PRODUCT_ID 0x81 // Register #1 Product ID Revision Register
#define VCNL4020_REG_PROX_RATE 0x82 // Register #2 Rate of Proximity Measurement
#define VCNL4020_REG_IR_LED_CURRENT 0x83 // Register #3 (Not explicitly named in datasheet)
#define VCNL4020_REG_AMBIENT_PARAM 0x84 // Register #4 Ambient Light Parameter Register
#define VCNL4020_REG_AMBIENT_RESULT_HIGH 0x85 // Register #5 Ambient Light Result High Byte
#define VCNL4020_REG_AMBIENT_RESULT_LOW 0x86 // Register #6 Ambient Light Result Low Byte
#define VCNL4020_REG_PROX_RESULT_HIGH 0x87 // Register #7 Proximity Result High Byte
#define VCNL4020_REG_PROX_RESULT_LOW 0x88 // Register #8 Proximity Result Low Byte
#define VCNL4020_REG_INT_CTRL 0x89 // Register #9 Interrupt Control Register
#define VCNL4020_REG_LOW_THRES_HIGH 0x8A // Register #10 Low Threshold High Byte
#define VCNL4020_REG_LOW_THRES_LOW 0x8B // Register #11 Low Threshold Low Byte
#define VCNL4020_REG_HIGH_THRES_HIGH 0x8C // Register #12 High Threshold High Byte
#define VCNL4020_REG_HIGH_THRES_LOW 0x8D // Register #13 High Threshold Low Byte
// Register #14 is not explicitly named in the datasheet
// Register #15 is not explicitly named in the datasheet
#define VCNL4020_REG_AMBIENT_IR_LEVEL 0x90 // Register #16 Ambient IR Light Level Register

Note: Some register names are not explicitly mentioned in the datasheet, so I've used placeholders for those. Feel free to update them as needed.

Certainly! Here's the updated code with Doxygen-style comments:

arduinoCopy code
///< VCNL4020 Register Definitions

#define VCNL4020_REG_COMMAND 0x80 ///< Register #0 Command Register
#define VCNL4020_REG_PRODUCT_ID 0x81 ///< Register #1 Product ID Revision Register
#define VCNL4020_REG_PROX_RATE 0x82 ///< Register #2 Rate of Proximity Measurement
#define VCNL4020_REG_IR_LED_CURRENT 0x83 ///< Register #3 (Not explicitly named in datasheet)
#define VCNL4020_REG_AMBIENT_PARAM 0x84 ///< Register #4 Ambient Light Parameter Register
#define VCNL4020_REG_AMBIENT_RESULT_HIGH 0x85 ///< Register #5 Ambient Light Result High Byte
#define VCNL4020_REG_AMBIENT_RESULT_LOW 0x86 ///< Register #6 Ambient Light Result Low Byte
#define VCNL4020_REG_PROX_RESULT_HIGH 0x87 ///< Register #7 Proximity Result High Byte
#define VCNL4020_REG_PROX_RESULT_LOW 0x88 ///< Register #8 Proximity Result Low Byte
#define VCNL4020_REG_INT_CTRL 0x89 ///< Register #9 Interrupt Control Register
#define VCNL4020_REG_LOW_THRES_HIGH 0x8A ///< Register #10 Low Threshold High Byte
#define VCNL4020_REG_LOW_THRES_LOW 0x8B ///< Register #11 Low Threshold Low Byte
#define VCNL4020_REG_HIGH_THRES_HIGH 0x8C ///< Register #12 High Threshold High Byte
#define VCNL4020_REG_HIGH_THRES_LOW 0x8D ///< Register #13 High Threshold Low Byte
// Register #14 is not explicitly named in the datasheet
// Register #15 is not explicitly named in the datasheet
#define VCNL4020_REG_AMBIENT_IR_LEVEL 0x90 ///< Register #16 Ambient IR Light Level Register

This should make it easier to generate documentation for your Arduino library using Doxygen.

Certainly! Below is a sample .h file for the Adafruit_VCNL4020 library. This file includes the Doxygen-style comments for the register definitions, as well as a class definition for the VCNL4020 sensor.

arduinoCopy code
/*!
 * @file Adafruit_VCNL4020.h
 *
 * This is the documentation for Adafruit's VCNL4020 driver for the
 * Arduino platform. It is designed specifically to work with the
 * Adafruit VCNL4020 breakout: https://www.adafruit.com/product/XYZ
 *
 * These sensors use I2C to communicate, 2 pins (SCL+SDA) are required
 * to interface with the board.
 *
 * Adafruit invests time and resources providing this open-source code.
 * Please support Adafruit and open-source hardware by purchasing
 * products from Adafruit!
 *
 * Written by [Your Name Here].
 *
 * MIT license, all text here must be included in any redistribution.
 *
 */

#ifndef ADAFRUIT_VCNL4020_H
#define ADAFRUIT_VCNL4020_H

#include "Arduino.h"
#include "Wire.h"

///< VCNL4020 Register Definitions
#define VCNL4020_REG_COMMAND 0x80 ///< Register #0 Command Register
#define VCNL4020_REG_PRODUCT_ID 0x81 ///< Register #1 Product ID Revision Register
#define VCNL4020_REG_PROX_RATE 0x82 ///< Register #2 Rate of Proximity Measurement
#define VCNL4020_REG_IR_LED_CURRENT 0x83 ///< Register #3 (Not explicitly named in datasheet)
#define VCNL4020_REG_AMBIENT_PARAM 0x84 ///< Register #4 Ambient Light Parameter Register
#define VCNL4020_REG_AMBIENT_RESULT_HIGH 0x85 ///< Register #5 Ambient Light Result High Byte
#define VCNL4020_REG_AMBIENT_RESULT_LOW 0x86 ///< Register #6 Ambient Light Result Low Byte
#define VCNL4020_REG_PROX_RESULT_HIGH 0x87 ///< Register #7 Proximity Result High Byte
#define VCNL4020_REG_PROX_RESULT_LOW 0x88 ///< Register #8 Proximity Result Low Byte
#define VCNL4020_REG_INT_CTRL 0x89 ///< Register #9 Interrupt Control Register
#define VCNL4020_REG_LOW_THRES_HIGH 0x8A ///< Register #10 Low Threshold High Byte
#define VCNL4020_REG_LOW_THRES_LOW 0x8B ///< Register #11 Low Threshold Low Byte
#define VCNL4020_REG_HIGH_THRES_HIGH 0x8C ///< Register #12 High Threshold High Byte
#define VCNL4020_REG_HIGH_THRES_LOW 0x8D ///< Register #13 High Threshold Low Byte
#define VCNL4020_REG_AMBIENT_IR_LEVEL 0x90 ///< Register #16 Ambient IR Light Level Register

/*!
 * @brief Class that stores state and functions for interacting with VCNL4020 sensor.
 */
class Adafruit_VCNL4020 {
public:
  Adafruit_VCNL4020();
  bool begin(uint8_t i2c_addr = 0x13, TwoWire *theWire = &Wire);

  // Add your function prototypes here, for example:
  // uint16_t readProximity();
  // uint16_t readAmbientLight();

private:
  TwoWire *_i2c;
  uint8_t _i2caddr;

  // Add any private variables or methods you need, for example:
  // uint8_t read8(uint8_t reg);
  // uint16_t read16(uint8_t reg);
  // void write8(uint8_t reg, uint8_t value);
};

#endif // ADAFRUIT_VCNL4020_H

Feel free to add your name and other details, as well as any additional methods or variables you think will be necessary for the library.

Certainly! To create a function that gets the als_data_rdy bit (bit #6) from the COMMAND REGISTER #0, you can use the Adafruit_BusIO library to handle the I2C communication. Below is a sample code snippet that demonstrates how to create the isALSready function.

First, make sure to include the Adafruit_BusIO library at the top of your .h file:

arduinoCopy code
#include <Adafruit_BusIO_Register.h>

Then, add the function prototype for isALSready in the class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  bool isALSready();

Now, in your .cpp file, you can implement the isALSready function like this:

arduinoCopy code
#include "Adafruit_VCNL4020.h"

// ... (other existing code)

/*!
 * @brief  Checks if the Ambient Light Sensor data is ready.
 * @return True if ALS data is ready, otherwise false.
 */
bool Adafruit_VCNL4020::isALSready() {
  // Create an I2C Register object for COMMAND REGISTER #0
  Adafruit_I2CRegister command_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_COMMAND, 1, MSBFIRST);
  
  // Create a bit accessor for bit #6 (als_data_rdy)
  Adafruit_I2CRegisterBits als_data_rdy = Adafruit_I2CRegisterBits(&command_reg, 1, 6); // 1 bit at position 6
  
  // Read the bit and return its value
  return als_data_rdy.read();
}

This function uses the Adafruit_I2CRegister class to create an object for COMMAND REGISTER #0, and then uses Adafruit_I2CRegisterBits to create a bit accessor for bit #6 (als_data_rdy). Finally, it reads the value of this bit and returns it.

Make sure to add this function after your class's existing methods in the .cpp file.

Certainly! You can simplify the Adafruit_I2CRegister instantiation by omitting the default values. Here's the updated isALSready function in your .cpp file:

arduinoCopy code
#include "Adafruit_VCNL4020.h"

// ... (other existing code)

/*!
 * @brief  Checks if the Ambient Light Sensor data is ready.
 * @return True if ALS data is ready, otherwise false.
 */
bool Adafruit_VCNL4020::isALSready() {
  // Create an I2C Register object for COMMAND REGISTER #0
  Adafruit_I2CRegister command_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_COMMAND);
  
  // Create a bit accessor for bit #6 (als_data_rdy)
  Adafruit_I2CRegisterBits als_data_rdy = Adafruit_I2CRegisterBits(&command_reg, 1, 6); // 1 bit at position 6
  
  // Read the bit and return its value
  return als_data_rdy.read();
}

This should work the same as before, but with a cleaner instantiation of the Adafruit_I2CRegister object.

Certainly! To create a function that gets the prox_data_rdy bit (bit #5) from the COMMAND REGISTER #0, you can follow a similar approach as with the isALSready function.

Add the function prototype for isProxReady in your .h file's class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  bool isProxReady();

Then, in your .cpp file, implement the isProxReady function like this:

arduinoCopy code
#include "Adafruit_VCNL4020.h"

// ... (other existing code)

/*!
 * @brief  Checks if the Proximity data is ready.
 * @return True if Proximity data is ready, otherwise false.
 */
bool Adafruit_VCNL4020::isProxReady() {
  // Create an I2C Register object for COMMAND REGISTER #0
  Adafruit_I2CRegister command_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_COMMAND);
  
  // Create a bit accessor for bit #5 (prox_data_rdy)
  Adafruit_I2CRegisterBits prox_data_rdy = Adafruit_I2CRegisterBits(&command_reg, 1, 5); // 1 bit at position 5
  
  // Read the bit and return its value
  return prox_data_rdy.read();
}

This function uses the Adafruit_I2CRegister class to create an object for COMMAND REGISTER #0, and then uses Adafruit_I2CRegisterBits to create a bit accessor for bit #5 (prox_data_rdy). Finally, it reads the value of this bit and returns it.

Make sure to add this function after your class's existing methods in the .cpp file.

Certainly! To create a function that sets the als_od (bit #3) and prox_od (bit #2) in the COMMAND REGISTER #0, you can use the Adafruit_I2CRegister and Adafruit_I2CRegisterBits classes.

First, add the function prototype for setOnDemand in your .h file's class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  void setOnDemand(bool als, bool prox);

Then, in your .cpp file, implement the setOnDemand function like this:

arduinoCopy code
#include "Adafruit_VCNL4020.h"

// ... (other existing code)

/*!
 * @brief  Sets the on-demand bits for ALS and Proximity measurements.
 * @param  als  True to set the ALS on-demand bit, otherwise false.
 * @param  prox True to set the Proximity on-demand bit, otherwise false.
 */
void Adafruit_VCNL4020::setOnDemand(bool als, bool prox) {
  // Create an I2C Register object for COMMAND REGISTER #0
  Adafruit_I2CRegister command_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_COMMAND);
  
  // Create bit accessors for bit #3 (als_od) and bit #2 (prox_od)
  Adafruit_I2CRegisterBits als_od = Adafruit_I2CRegisterBits(&command_reg, 1, 3); // 1 bit at position 3
  Adafruit_I2CRegisterBits prox_od = Adafruit_I2CRegisterBits(&command_reg, 1, 2); // 1 bit at position 2
  
  // Set the bits based on the arguments
  als_od.write(als);
  prox_od.write(prox);
}

In this function, we first create an Adafruit_I2CRegister object for COMMAND REGISTER #0. Then, we create bit accessors for als_od and prox_od using Adafruit_I2CRegisterBits. Finally, we set the values of these bits based on the arguments passed to the function.

Make sure to add this function after your class's existing methods in the .cpp file.

I apologize for the oversight. According to the datasheet, the bit offsets for als_od and prox_od in COMMAND REGISTER #0 are as follows:

• als_od is at Bit 4
• prox_od is at Bit 3

Here's how you can update the setOnDemand function to correctly set these bits:

arduinoCopy code
/*!
 * @brief  Sets the on-demand bits for ALS and Proximity measurements.
 * @param  als  True to set the ALS on-demand bit, otherwise false.
 * @param  prox True to set the Proximity on-demand bit, otherwise false.
 */
void Adafruit_VCNL4020::setOnDemand(bool als, bool prox) {
  // Create an I2C Register object for COMMAND REGISTER #0
  Adafruit_I2CRegister command_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_COMMAND);
  
  // Create bit accessors for bit #4 (als_od) and bit #3 (prox_od)
  Adafruit_I2CRegisterBits als_od = Adafruit_I2CRegisterBits(&command_reg, 1, 4); // 1 bit at position 4
  Adafruit_I2CRegisterBits prox_od = Adafruit_I2CRegisterBits(&command_reg, 1, 3); // 1 bit at position 3
  
  // Set the bits based on the arguments
  als_od.write(als);
  prox_od.write(prox);
}

This should correctly set the als_od and prox_od bits in COMMAND REGISTER #0 based on the arguments passed to the function.

Certainly! To create a function that sets the als_en (bit #1) and prox_en (bit #0) in the COMMAND REGISTER #0, you can follow a similar approach as with the previous functions.

First, add the function prototype for enable in your .h file's class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  void enable(bool als, bool prox);

Then, in your .cpp file, implement the enable function like this:

arduinoCopy code
/*!
 * @brief  Enables or disables the ALS and Proximity measurements.
 * @param  als  True to enable the ALS, otherwise false.
 * @param  prox True to enable the Proximity, otherwise false.
 */
void Adafruit_VCNL4020::enable(bool als, bool prox) {
  // Create an I2C Register object for COMMAND REGISTER #0
  Adafruit_I2CRegister command_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_COMMAND);
  
  // Create bit accessors for bit #1 (als_en) and bit #0 (prox_en)
  Adafruit_I2CRegisterBits als_en = Adafruit_I2CRegisterBits(&command_reg, 1, 1); // 1 bit at position 1
  Adafruit_I2CRegisterBits prox_en = Adafruit_I2CRegisterBits(&command_reg, 1, 0); // 1 bit at position 0
  
  // Set the bits based on the arguments
  als_en.write(als);
  prox_en.write(prox);
}

This function uses the Adafruit_I2CRegister class to create an object for COMMAND REGISTER #0, and then uses Adafruit_I2CRegisterBits to create bit accessors for als_en and prox_en. Finally, it sets the values of these bits based on the arguments passed to the function.

Make sure to add this function after your class's existing methods in the .cpp file.

I apologize for the oversight. According to the datasheet, the bit offsets for als_en and prox_en in COMMAND REGISTER #0 are as follows:

• als_en is at Bit 2
• prox_en is at Bit 1

Here's how you can update the enable function to correctly set these bits:

arduinoCopy code
/*!
 * @brief  Enables or disables the ALS and Proximity measurements.
 * @param  als  True to enable the ALS, otherwise false.
 * @param  prox True to enable the Proximity, otherwise false.
 */
void Adafruit_VCNL4020::enable(bool als, bool prox) {
  // Create an I2C Register object for COMMAND REGISTER #0
  Adafruit_I2CRegister command_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_COMMAND);
  
  // Create bit accessors for bit #2 (als_en) and bit #1 (prox_en)
  Adafruit_I2CRegisterBits als_en = Adafruit_I2CRegisterBits(&command_reg, 1, 2); // 1 bit at position 2
  Adafruit_I2CRegisterBits prox_en = Adafruit_I2CRegisterBits(&command_reg, 1, 1); // 1 bit at position 1
  
  // Set the bits based on the arguments
  als_en.write(als);
  prox_en.write(prox);
}

This should correctly set the als_en and prox_en bits in COMMAND REGISTER #0 based on the arguments passed to the function. Thank you for bringing this to my attention, and I'll make sure to verify against the datasheet going forward.

Certainly! According to the datasheet, the selftimed_en bit is at Bit 0 in COMMAND REGISTER #0. Here's how you can update the enable function to include the selftimed_en bit:

arduinoCopy code
/*!
 * @brief  Enables or disables the ALS, Proximity, and Self-Timed measurements.
 * @param  als        True to enable the ALS, otherwise false.
 * @param  prox       True to enable the Proximity, otherwise false.
 * @param  selftimed  True to enable the Self-Timed measurements, otherwise false.
 */
void Adafruit_VCNL4020::enable(bool als, bool prox, bool selftimed) {
  // Create an I2C Register object for COMMAND REGISTER #0
  Adafruit_I2CRegister command_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_COMMAND);
  
  // Create bit accessors for bit #2 (als_en), bit #1 (prox_en), and bit #0 (selftimed_en)
  Adafruit_I2CRegisterBits als_en = Adafruit_I2CRegisterBits(&command_reg, 1, 2); // 1 bit at position 2
  Adafruit_I2CRegisterBits prox_en = Adafruit_I2CRegisterBits(&command_reg, 1, 1); // 1 bit at position 1
  Adafruit_I2CRegisterBits selftimed_en = Adafruit_I2CRegisterBits(&command_reg, 1, 0); // 1 bit at position 0
  
  // Set the bits based on the arguments
  als_en.write(als);
  prox_en.write(prox);
  selftimed_en.write(selftimed);
}

This updated function now takes an additional argument for the selftimed_en bit and sets it along with the als_en and prox_en bits in COMMAND REGISTER #0.

Certainly! To read the contents of Register #1 (Product ID Revision Register), you can create a function called getProdRevision. This function will use the Adafruit_I2CRegister class to read the 8-bit value from the register and return it.

First, add the function prototype for getProdRevision in your .h file's class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  uint8_t getProdRevision();

Then, in your .cpp file, implement the getProdRevision function like this:

arduinoCopy code
/*!
 * @brief  Gets the Product ID Revision from Register #1.
 * @return 8-bit value representing the Product ID Revision.
 */
uint8_t Adafruit_VCNL4020::getProdRevision() {
  // Create an I2C Register object for Product ID Revision Register (Register #1)
  Adafruit_I2CRegister prod_id_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_PRODUCT_ID);
  
  // Read the 8-bit value from the register and return it
  return prod_id_reg.read();
}

This function uses the Adafruit_I2CRegister class to create an object for Register #1 and then reads the 8-bit value from this register using the read() method. The value is then returned to the caller.

Make sure to add this function after your class's existing methods in the .cpp file.

According to the datasheet, the Proximity rate in Register #2 has the following 3-bit binary values and corresponding measurement rates:

• 000 - 1.95 measurements/s (DEFAULT)
• 001 - 3.90625 measurements/s
• 010 - 7.8125 measurements/s
• 011 - 16.625 measurements/s
• 100 - 31.25 measurements/s
• 101 - 62.5 measurements/s
• 110 - 125 measurements/s
• 111 - 250 measurements/s

You can represent these as a C enum like so:

arduinoCopy code
typedef enum {
  PROX_RATE_1_95 = 0x00,  ///< 1.95 measurements/s
  PROX_RATE_3_9  = 0x01,  ///< 3.90625 measurements/s
  PROX_RATE_7_8  = 0x02,  ///< 7.8125 measurements/s
  PROX_RATE_16_6 = 0x03,  ///< 16.625 measurements/s
  PROX_RATE_31_2 = 0x04,  ///< 31.25 measurements/s
  PROX_RATE_62_5 = 0x05,  ///< 62.5 measurements/s
  PROX_RATE_125  = 0x06,  ///< 125 measurements/s
  PROX_RATE_250  = 0x07   ///< 250 measurements/s
} ProxRate;

This enum can be used in your Arduino library to make it easier to set and read the Proximity rate from Register #2.

Certainly! Here's the updated C enum with the _PER_S suffix and typedef as vcnl4020_proxrate:

arduinoCopy code
typedef enum {
  PROX_RATE_1_95_PER_S = 0x00,  ///< 1.95 measurements/s
  PROX_RATE_3_9_PER_S  = 0x01,  ///< 3.90625 measurements/s
  PROX_RATE_7_8_PER_S  = 0x02,  ///< 7.8125 measurements/s
  PROX_RATE_16_6_PER_S = 0x03,  ///< 16.625 measurements/s
  PROX_RATE_31_2_PER_S = 0x04,  ///< 31.25 measurements/s
  PROX_RATE_62_5_PER_S = 0x05,  ///< 62.5 measurements/s
  PROX_RATE_125_PER_S  = 0x06,  ///< 125 measurements/s
  PROX_RATE_250_PER_S  = 0x07   ///< 250 measurements/s
} vcnl4020_proxrate;

You can include this enum in your .h file to make it accessible throughout your library.

Certainly! To create the setter and getter functions for Register #2 Rate of Proximity Measurement, you can use the Adafruit_I2CRegister and Adafruit_I2CRegisterBits classes.

First, add the function prototypes for setProxRate and getProxRate in your .h file's class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  void setProxRate(vcnl4020_proxrate rate);
  vcnl4020_proxrate getProxRate();

Then, in your .cpp file, implement these functions like this:

arduinoCopy code
/*!
 * @brief  Sets the Proximity Rate.
 * @param  rate  The rate to set, as defined in the vcnl4020_proxrate enum.
 */
void Adafruit_VCNL4020::setProxRate(vcnl4020_proxrate rate) {
  // Create an I2C Register object for Register #2 (Rate of Proximity Measurement)
  Adafruit_I2CRegister prox_rate_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_PROX_RATE);
  
  // Write the 3-bit value to the register
  prox_rate_reg.write(rate);
}

/*!
 * @brief  Gets the current Proximity Rate.
 * @return The current rate, as defined in the vcnl4020_proxrate enum.
 */
vcnl4020_proxrate Adafruit_VCNL4020::getProxRate() {
  // Create an I2C Register object for Register #2 (Rate of Proximity Measurement)
  Adafruit_I2CRegister prox_rate_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_PROX_RATE);
  
  // Read the 3-bit value from the register
  return (vcnl4020_proxrate)prox_rate_reg.read();
}

In the setProxRate function, we create an Adafruit_I2CRegister object for Register #2 and then write the 3-bit value to this register using the write() method.

In the getProxRate function, we read the 3-bit value from Register #2 using the read() method and cast it to the vcnl4020_proxrate enum type.

Make sure to add these functions after your class's existing methods in the .cpp file.

You're correct; using Adafruit_I2CRegisterBits would be more appropriate for setting only the relevant bits of the register. Here's how you can modify the setProxRate and getProxRate functions to use Adafruit_I2CRegisterBits.

First, add the function prototypes for setProxRate and getProxRate in your .h file's class definition, if you haven't already:

arduinoCopy code
public:
  // ... (other existing methods)
  void setProxRate(vcnl4020_proxrate rate);
  vcnl4020_proxrate getProxRate();

Then, in your .cpp file, implement these functions like this:

arduinoCopy code
/*!
 * @brief  Sets the Proximity Rate.
 * @param  rate  The rate to set, as defined in the vcnl4020_proxrate enum.
 */
void Adafruit_VCNL4020::setProxRate(vcnl4020_proxrate rate) {
  // Create an I2C Register object for Register #2 (Rate of Proximity Measurement)
  Adafruit_I2CRegister prox_rate_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_PROX_RATE);
  
  // Create a bit accessor for the 3-bit Proximity Rate field
  Adafruit_I2CRegisterBits prox_rate_bits = Adafruit_I2CRegisterBits(&prox_rate_reg, 3, 0); // 3 bits starting at position 0
  
  // Write the 3-bit value to the register
  prox_rate_bits.write(rate);
}

/*!
 * @brief  Gets the current Proximity Rate.
 * @return The current rate, as defined in the vcnl4020_proxrate enum.
 */
vcnl4020_proxrate Adafruit_VCNL4020::getProxRate() {
  // Create an I2C Register object for Register #2 (Rate of Proximity Measurement)
  Adafruit_I2CRegister prox_rate_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_PROX_RATE);
  
  // Create a bit accessor for the 3-bit Proximity Rate field
  Adafruit_I2CRegisterBits prox_rate_bits = Adafruit_I2CRegisterBits(&prox_rate_reg, 3, 0); // 3 bits starting at position 0
  
  // Read the 3-bit value from the register
  return (vcnl4020_proxrate)prox_rate_bits.read();
}

In these functions, we use Adafruit_I2CRegisterBits to create a bit accessor for the 3-bit Proximity Rate field in Register #2. Then we use the write() and read() methods of Adafruit_I2CRegisterBits to set and get the value, respectively.

Make sure to add these functions after your class's existing methods in the .cpp file.

Certainly! To create the setter and getter functions for Register #3 LED Current Setting for Proximity Mode, you can use the Adafruit_I2CRegister and Adafruit_I2CRegisterBits classes.

First, add the function prototypes for setProxLEDmA and getProxLEDmA in your .h file's class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  void setProxLEDmA(uint8_t LEDmA);
  uint8_t getProxLEDmA();

Then, in your .cpp file, implement these functions like this:

arduinoCopy code
/*!
 * @brief  Sets the LED current for Proximity Mode in mA.
 * @param  LEDmA  The LED current in mA.
 */
void Adafruit_VCNL4020::setProxLEDmA(uint8_t LEDmA) {
  // Create an I2C Register object for Register #3 (LED Current Setting for Proximity Mode)
  Adafruit_I2CRegister led_current_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_LED_CURRENT);
  
  // Create a bit accessor for the 7-bit LED current field
  Adafruit_I2CRegisterBits led_current_bits = Adafruit_I2CRegisterBits(&led_current_reg, 7, 0); // 7 bits starting at position 0
  
  // Divide the LED current by 10 and write the value to the register
  led_current_bits.write(LEDmA / 10);
}

/*!
 * @brief  Gets the LED current for Proximity Mode in mA.
 * @return The LED current in mA.
 */
uint8_t Adafruit_VCNL4020::getProxLEDmA() {
  // Create an I2C Register object for Register #3 (LED Current Setting for Proximity Mode)
  Adafruit_I2CRegister led_current_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_LED_CURRENT);
  
  // Create a bit accessor for the 7-bit LED current field
  Adafruit_I2CRegisterBits led_current_bits = Adafruit_I2CRegisterBits(&led_current_reg, 7, 0); // 7 bits starting at position 0
  
  // Read the value from the register and multiply by 10 to get the LED current in mA
  return led_current_bits.read() * 10;
}

In these functions, we use Adafruit_I2CRegisterBits to create a bit accessor for the 7-bit LED Current field in Register #3. Then we use the write() and read() methods of Adafruit_I2CRegisterBits to set and get the value, respectively.

Note that we divide the input LEDmA by 10 before writing it to the register in setProxLEDmA, and we multiply the read value by 10 before returning it in getProxLEDmA.

Make sure to add these functions after your class's existing methods in the .cpp file.

I apologize for the oversight. According to the datasheet, the IR LED current value in Register #3 is represented by bits from 0 to 6, making it a 7-bit field (Page 7).

Here's how you can modify the setProxLEDmA and getProxLEDmA functions to use Adafruit_I2CRegisterBits for setting only the relevant 7 bits:

First, add the function prototypes for setProxLEDmA and getProxLEDmA in your .h file's class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  void setProxLEDmA(uint8_t LEDmA);
  uint8_t getProxLEDmA();

Then, in your .cpp file, implement these functions like this:

arduinoCopy code
/*!
 * @brief  Sets the LED current for Proximity Mode in mA.
 * @param  LEDmA  The LED current in mA.
 */
void Adafruit_VCNL4020::setProxLEDmA(uint8_t LEDmA) {
  // Create an I2C Register object for Register #3 (LED Current Setting for Proximity Mode)
  Adafruit_I2CRegister led_current_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_LED_CURRENT);
  
  // Create a bit accessor for the 7-bit LED current field
  Adafruit_I2CRegisterBits led_current_bits = Adafruit_I2CRegisterBits(&led_current_reg, 7, 0); // 7 bits starting at position 0
  
  // Divide the LED current by 10 and write the value to the register
  led_current_bits.write(LEDmA / 10);
}

/*!
 * @brief  Gets the LED current for Proximity Mode in mA.
 * @return The LED current in mA.
 */
uint8_t Adafruit_VCNL4020::getProxLEDmA() {
  // Create an I2C Register object for Register #3 (LED Current Setting for Proximity Mode)
  Adafruit_I2CRegister led_current_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_LED_CURRENT);
  
  // Create a bit accessor for the 7-bit LED current field
  Adafruit_I2CRegisterBits led_current_bits = Adafruit_I2CRegisterBits(&led_current_reg, 7, 0); // 7 bits starting at position 0
  
  // Read the value from the register and multiply by 10 to get the LED current in mA
  return led_current_bits.read() * 10;
}

This should properly set and get the LED current for Proximity Mode in Register #3, using only the relevant 7 bits. Make sure to add these functions after your class's existing methods in the .cpp file.

I apologize for the mistake. Thank you for pointing it out. The IR LED current value in Register #3 is indeed represented by bits from 0 to 5, making it a 6-bit field.

Here's the corrected implementation for the setProxLEDmA and getProxLEDmA functions:

arduinoCopy code
/*!
 * @brief  Sets the LED current for Proximity Mode in mA.
 * @param  LEDmA  The LED current in mA.
 */
void Adafruit_VCNL4020::setProxLEDmA(uint8_t LEDmA) {
  // Create an I2C Register object for Register #3 (LED Current Setting for Proximity Mode)
  Adafruit_I2CRegister led_current_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_LED_CURRENT);
  
  // Create a bit accessor for the 6-bit LED current field
  Adafruit_I2CRegisterBits led_current_bits = Adafruit_I2CRegisterBits(&led_current_reg, 6, 0); // 6 bits starting at position 0
  
  // Divide the LED current by 10 and write the value to the register
  led_current_bits.write(LEDmA / 10);
}

/*!
 * @brief  Gets the LED current for Proximity Mode in mA.
 * @return The LED current in mA.
 */
uint8_t Adafruit_VCNL4020::getProxLEDmA() {
  // Create an I2C Register object for Register #3 (LED Current Setting for Proximity Mode)
  Adafruit_I2CRegister led_current_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_LED_CURRENT);
  
  // Create a bit accessor for the 6-bit LED current field
  Adafruit_I2CRegisterBits led_current_bits = Adafruit_I2CRegisterBits(&led_current_reg, 6, 0); // 6 bits starting at position 0
  
  // Read the value from the register and multiply by 10 to get the LED current in mA
  return led_current_bits.read() * 10;
}

This corrected version uses a 6-bit field for setting and getting the LED current for Proximity Mode in Register #3. Make sure to add these functions after your class's existing methods in the .cpp file.

According to the datasheet, Register #4 is the Ambient Light Parameter Register with the address 84h. It has several bits for different functionalities:

• Bit 7: Continuous conversion mode (Enable = 1; Disable = 0 = DEFAULT)
• Bit 6: Not mentioned
• Bit 5-3: Ambient light measurement rate (000 - 1 samples/s, 001 - 2 samples/s = DEFAULT, ..., 111 - 10 samples/s)
• Bit 2-0: Averaging function (number of measurements per run)

(Page 8)

Would you like to proceed with writing the setter and getter functions for this register? If so, which specific bits would you like to manipulate?

Certainly! To create the setter functions for Register #4 Ambient Light Parameter, you can use the Adafruit_I2CRegister and Adafruit_I2CRegisterBits classes.

First, add the function prototypes for setContinuousConversion and setAutoOffsetComp in your .h file's class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  void setContinuousConversion(bool enable);
  void setAutoOffsetComp(bool enable);

Then, in your .cpp file, implement these functions like this:

arduinoCopy code
/*!
 * @brief  Sets the Continuous Conversion mode for Ambient Light Measurement.
 * @param  enable  True to enable, False to disable.
 */
void Adafruit_VCNL4020::setContinuousConversion(bool enable) {
  // Create an I2C Register object for Register #4 (Ambient Light Parameter)
  Adafruit_I2CRegister ambient_light_param_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_AMBIENT_LIGHT_PARAM);
  
  // Create a bit accessor for the Continuous Conversion mode bit (Bit 7)
  Adafruit_I2CRegisterBits continuous_conversion_bit = Adafruit_I2CRegisterBits(&ambient_light_param_reg, 1, 7); // 1 bit at position 7
  
  // Write the value to the register
  continuous_conversion_bit.write(enable ? 1 : 0);
}

/*!
 * @brief  Sets the Auto Offset Compensation for Ambient Light Measurement.
 * @param  enable  True to enable, False to disable.
 */
void Adafruit_VCNL4020::setAutoOffsetComp(bool enable) {
  // Create an I2C Register object for Register #4 (Ambient Light Parameter)
  Adafruit_I2CRegister ambient_light_param_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_AMBIENT_LIGHT_PARAM);
  
  // Create a bit accessor for the Auto Offset Compensation bit (Bit 3)
  Adafruit_I2CRegisterBits auto_offset_comp_bit = Adafruit_I2CRegisterBits(&ambient_light_param_reg, 1, 3); // 1 bit at position 3
  
  // Write the value to the register
  auto_offset_comp_bit.write(enable ? 1 : 0);
}

In these functions, we use Adafruit_I2CRegisterBits to create a bit accessor for the specific bits in Register #4. Then we use the write() method of Adafruit_I2CRegisterBits to set the value.

Make sure to add these functions after your class's existing methods in the .cpp file.

Certainly! According to the datasheet, the 'Ambient light measurement rate' in Register #4 is represented by bits 5-3 (not 4-6 as previously mentioned). The options are:

• 000 - 1 samples/s
• 001 - 2 samples/s (DEFAULT)
• 010 - 3 samples/s
• 011 - 4 samples/s
• 100 - 5 samples/s
• 101 - 6 samples/s
• 110 - 8 samples/s
• 111 - 10 samples/s

Here's how you can represent these as a C enum:

arduinoCopy code
typedef enum {
  AMBIENT_RATE_1_SAMP = 0x00,  ///< 1 samples/s
  AMBIENT_RATE_2_SAMP = 0x01,  ///< 2 samples/s (DEFAULT)
  AMBIENT_RATE_3_SAMP = 0x02,  ///< 3 samples/s
  AMBIENT_RATE_4_SAMP = 0x03,  ///< 4 samples/s
  AMBIENT_RATE_5_SAMP = 0x04,  ///< 5 samples/s
  AMBIENT_RATE_6_SAMP = 0x05,  ///< 6 samples/s
  AMBIENT_RATE_8_SAMP = 0x06,  ///< 8 samples/s
  AMBIENT_RATE_10_SAMP = 0x07  ///< 10 samples/s
} vcnl4020_ambientrate;

You can include this enum in your .h file to make it accessible throughout your library. Would you like to proceed with writing the setter and getter functions for this enum?

Certainly! Here's the updated C enum with the _SPS suffix:

arduinoCopy code
typedef enum {
  AMBIENT_RATE_1_SPS = 0x00,  ///< 1 samples/s
  AMBIENT_RATE_2_SPS = 0x01,  ///< 2 samples/s (DEFAULT)
  AMBIENT_RATE_3_SPS = 0x02,  ///< 3 samples/s
  AMBIENT_RATE_4_SPS = 0x03,  ///< 4 samples/s
  AMBIENT_RATE_5_SPS = 0x04,  ///< 5 samples/s
  AMBIENT_RATE_6_SPS = 0x05,  ///< 6 samples/s
  AMBIENT_RATE_8_SPS = 0x06,  ///< 8 samples/s
  AMBIENT_RATE_10_SPS = 0x07  ///< 10 samples/s
} vcnl4020_ambientrate;

You can include this enum in your .h file to make it accessible throughout your library. Would you like to proceed with writing the setter and getter functions for this enum?

Great! Let's proceed with writing the setter and getter functions for the 'Ambient light measurement rate' using the vcnl4020_ambientrate enum.

First, add the function prototypes for setAmbientRate and getAmbientRate in your .h file's class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  void setAmbientRate(vcnl4020_ambientrate rate);
  vcnl4020_ambientrate getAmbientRate();

Then, in your .cpp file, implement these functions like this:

arduinoCopy code
/*!
 * @brief  Sets the Ambient Light Measurement Rate.
 * @param  rate  The rate to set, as defined in the vcnl4020_ambientrate enum.
 */
void Adafruit_VCNL4020::setAmbientRate(vcnl4020_ambientrate rate) {
  // Create an I2C Register object for Register #4 (Ambient Light Parameter)
  Adafruit_I2CRegister ambient_light_param_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_AMBIENT_LIGHT_PARAM);
  
  // Create a bit accessor for the 3-bit Ambient Light Measurement Rate field (Bits 5-3)
  Adafruit_I2CRegisterBits ambient_rate_bits = Adafruit_I2CRegisterBits(&ambient_light_param_reg, 3, 3); // 3 bits starting at position 3
  
  // Write the 3-bit value to the register
  ambient_rate_bits.write(rate);
}

/*!
 * @brief  Gets the current Ambient Light Measurement Rate.
 * @return The current rate, as defined in the vcnl4020_ambientrate enum.
 */
vcnl4020_ambientrate Adafruit_VCNL4020::getAmbientRate() {
  // Create an I2C Register object for Register #4 (Ambient Light Parameter)
  Adafruit_I2CRegister ambient_light_param_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_AMBIENT_LIGHT_PARAM);
  
  // Create a bit accessor for the 3-bit Ambient Light Measurement Rate field (Bits 5-3)
  Adafruit_I2CRegisterBits ambient_rate_bits = Adafruit_I2CRegisterBits(&ambient_light_param_reg, 3, 3); // 3 bits starting at position 3
  
  // Read the 3-bit value from the register
  return (vcnl4020_ambientrate)ambient_rate_bits.read();
}

In these functions, we use Adafruit_I2CRegisterBits to create a bit accessor for the 3-bit Ambient Light Measurement Rate field in Register #4. Then we use the write() and read() methods of Adafruit_I2CRegisterBits to set and get the value, respectively.

Make sure to add these functions after your class's existing methods in the .cpp file.

Certainly! The bottom 3 bits in Register #4 represent the "Averaging function," which specifies the number of measurements per run. The enum value can range from 0x0 to 0x7, and the number of samples is $2^n$, where $n$ is the enum value.

Here's how you can represent this as a C enum:

arduinoCopy code
typedef enum {
  AVG_1_SAMPLES = 0x00,  ///< 2^0 = 1 sample
  AVG_2_SAMPLES = 0x01,  ///< 2^1 = 2 samples
  AVG_4_SAMPLES = 0x02,  ///< 2^2 = 4 samples
  AVG_8_SAMPLES = 0x03,  ///< 2^3 = 8 samples
  AVG_16_SAMPLES = 0x04, ///< 2^4 = 16 samples
  AVG_32_SAMPLES = 0x05, ///< 2^5 = 32 samples
  AVG_64_SAMPLES = 0x06, ///< 2^6 = 64 samples
  AVG_128_SAMPLES = 0x07 ///< 2^7 = 128 samples
} vcnl4020_averaging;

You can include this enum in your .h file to make it accessible throughout your library. Would you like to proceed with writing the setter and getter functions for this enum?

Great! Let's proceed with writing the setter and getter functions for the 'Averaging function' using the vcnl4020_averaging enum.

First, add the function prototypes for setAveraging and getAveraging in your .h file's class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  void setAveraging(vcnl4020_averaging avg);
  vcnl4020_averaging getAveraging();

Then, in your .cpp file, implement these functions like this:

arduinoCopy code
/*!
 * @brief  Sets the Averaging function for Ambient Light Measurement.
 * @param  avg  The averaging setting to use, as defined in the vcnl4020_averaging enum.
 */
void Adafruit_VCNL4020::setAveraging(vcnl4020_averaging avg) {
  // Create an I2C Register object for Register #4 (Ambient Light Parameter)
  Adafruit_I2CRegister ambient_light_param_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_AMBIENT_LIGHT_PARAM);
  
  // Create a bit accessor for the 3-bit Averaging function field (Bits 2-0)
  Adafruit_I2CRegisterBits averaging_bits = Adafruit_I2CRegisterBits(&ambient_light_param_reg, 3, 0); // 3 bits starting at position 0
  
  // Write the 3-bit value to the register
  averaging_bits.write(avg);
}

/*!
 * @brief  Gets the current Averaging function for Ambient Light Measurement.
 * @return The current averaging setting, as defined in the vcnl4020_averaging enum.
 */
vcnl4020_averaging Adafruit_VCNL4020::getAveraging() {
  // Create an I2C Register object for Register #4 (Ambient Light Parameter)
  Adafruit_I2CRegister ambient_light_param_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_AMBIENT_LIGHT_PARAM);
  
  // Create a bit accessor for the 3-bit Averaging function field (Bits 2-0)
  Adafruit_I2CRegisterBits averaging_bits = Adafruit_I2CRegisterBits(&ambient_light_param_reg, 3, 0); // 3 bits starting at position 0
  
  // Read the 3-bit value from the register
  return (vcnl4020_averaging)averaging_bits.read();
}

In these functions, we use Adafruit_I2CRegisterBits to create a bit accessor for the 3-bit Averaging function field in Register #4. Then we use the write() and read() methods of Adafruit_I2CRegisterBits to set and get the value, respectively.

Make sure to add these functions after your class's existing methods in the .cpp file.

Certainly! To read a 2-byte MSB-first register, you can use the Adafruit_I2CRegister class with the appropriate length and byte order parameters.

First, add the function prototype for readALS in your .h file's class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  uint16_t readALS();

Then, in your .cpp file, implement the readALS function like this:

arduinoCopy code
/*!
 * @brief  Reads the Ambient Light Sensor (ALS) measurement result.
 * @return The 16-bit ALS measurement result.
 */
uint16_t Adafruit_VCNL4020::readALS() {
  // Create an I2C Register object for Register #5 and #6 (Ambient Light Result Register)
  // The register is 2 bytes long and MSB-first
  Adafruit_I2CRegister als_result_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_ALS_RESULT, 2, MSBFIRST);
  
  // Read the 16-bit value from the register
  return als_result_reg.read();
}

In this function, we use Adafruit_I2CRegister to create a register object for the Ambient Light Result Register (#5 and #6). We specify that the register is 2 bytes long and MSB-first. Then we use the read() method of Adafruit_I2CRegister to read the 16-bit value.

Make sure to add this function after your class's existing methods in the .cpp file.

Certainly! To read the 2-byte MSB-first Proximity Measurement Result Register, you can follow a similar approach.

First, add the function prototype for readProximity in your .h file's class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  uint16_t readProximity();

Then, in your .cpp file, implement the readProximity function like this:

arduinoCopy code
/*!
 * @brief  Reads the Proximity Measurement Result.
 * @return The 16-bit Proximity Measurement Result.
 */
uint16_t Adafruit_VCNL4020::readProximity() {
  // Create an I2C Register object for Register #7 and #8 (Proximity Measurement Result Register)
  // The register is 2 bytes long and MSB-first
  Adafruit_I2CRegister proximity_result_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_PROXIMITY_RESULT, 2, MSBFIRST);
  
  // Read the 16-bit value from the register
  return proximity_result_reg.read();
}

In this function, we use Adafruit_I2CRegister to create a register object for the Proximity Measurement Result Register (#7 and #8). We specify that the register is 2 bytes long and MSB-first. Then we use the read() method of Adafruit_I2CRegister to read the 16-bit value.

Make sure to add this function after your class's existing methods in the .cpp file.

Certainly! To read and write 2-byte MSB-first registers for the Low and High Thresholds, you can use the Adafruit_I2CRegister class.

First, add the function prototypes for setLowThreshold, getLowThreshold, setHighThreshold, and getHighThreshold in your .h file's class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  void setLowThreshold(uint16_t threshold);
  uint16_t getLowThreshold();
  void setHighThreshold(uint16_t threshold);
  uint16_t getHighThreshold();

Then, in your .cpp file, implement these functions like this:

arduinoCopy code
/*!
 * @brief  Sets the Low Threshold for Proximity Measurement.
 * @param  threshold  The 16-bit Low Threshold value.
 */
void Adafruit_VCNL4020::setLowThreshold(uint16_t threshold) {
  // Create an I2C Register object for Register #10 and #11 (Low Threshold)
  Adafruit_I2CRegister low_threshold_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_LOW_THRESHOLD, 2, MSBFIRST);
  
  // Write the 16-bit value to the register
  low_threshold_reg.write(threshold);
}

/*!
 * @brief  Gets the Low Threshold for Proximity Measurement.
 * @return The 16-bit Low Threshold value.
 */
uint16_t Adafruit_VCNL4020::getLowThreshold() {
  // Create an I2C Register object for Register #10 and #11 (Low Threshold)
  Adafruit_I2CRegister low_threshold_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_LOW_THRESHOLD, 2, MSBFIRST);
  
  // Read the 16-bit value from the register
  return low_threshold_reg.read();
}

/*!
 * @brief  Sets the High Threshold for Proximity Measurement.
 * @param  threshold  The 16-bit High Threshold value.
 */
void Adafruit_VCNL4020::setHighThreshold(uint16_t threshold) {
  // Create an I2C Register object for Register #12 and #13 (High Threshold)
  Adafruit_I2CRegister high_threshold_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_HIGH_THRESHOLD, 2, MSBFIRST);
  
  // Write the 16-bit value to the register
  high_threshold_reg.write(threshold);
}

/*!
 * @brief  Gets the High Threshold for Proximity Measurement.
 * @return The 16-bit High Threshold value.
 */
uint16_t Adafruit_VCNL4020::getHighThreshold() {
  // Create an I2C Register object for Register #12 and #13 (High Threshold)
  Adafruit_I2CRegister high_threshold_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_HIGH_THRESHOLD, 2, MSBFIRST);
  
  // Read the 16-bit value from the register
  return high_threshold_reg.read();
}

In these functions, we use Adafruit_I2CRegister to create register objects for the Low and High Threshold registers (#10 and #11, #12 and #13 respectively). We specify that each register is 2 bytes long and MSB-first. Then we use the write() and read() methods of Adafruit_I2CRegister to set and get the 16-bit values.

Make sure to add these functions after your class's existing methods in the .cpp file.

It appears that the search did not yield the specific details for the Int count exceed field in INTERRUPT CONTROL REGISTER #9. Would you like me to proceed with creating the enum table based on your knowledge of the register, or would you like to try another approach to obtain the information?

Thank you for providing the table. Based on this information, you can create an enum table for the Int count exceed field in INTERRUPT CONTROL REGISTER #9 as follows:

arduinoCopy code
typedef enum {
  INT_COUNT_1 = 0x00,   ///< 1 count (DEFAULT)
  INT_COUNT_2 = 0x01,   ///< 2 count
  INT_COUNT_4 = 0x02,   ///< 4 count
  INT_COUNT_8 = 0x03,   ///< 8 count
  INT_COUNT_16 = 0x04,  ///< 16 count
  INT_COUNT_32 = 0x05,  ///< 32 count
  INT_COUNT_64 = 0x06,  ///< 64 count
  INT_COUNT_128 = 0x07  ///< 128 count
} vcnl4020_int_count;

You can include this enum in your .h file to make it accessible throughout your library. Would you like to proceed with writing the setter and getter functions for this enum?

Certainly! To set all the bits in INTERRUPT CONTROL REGISTER #9, you can use the Adafruit_I2CRegister class to create a register object and then use bitwise operations to set the individual bits based on the function arguments.

First, add the function prototype for setInterruptConfig in your .h file's class definition:

arduinoCopy code
public:
  // ... (other existing methods)
  void setInterruptConfig(bool proxReady, bool alsReady, bool thresh, bool threshALS, vcnl4020_int_count intCount);

Then, in your .cpp file, implement the setInterruptConfig function like this:

arduinoCopy code
/*!
 * @brief  Sets the Interrupt Configuration for INTERRUPT CONTROL REGISTER #9.
 * @param  proxReady  True to enable Proximity Ready interrupt, False to disable.
 * @param  alsReady   True to enable Ambient Light Sensor Ready interrupt, False to disable.
 * @param  thresh     True to enable Threshold interrupt, False to disable.
 * @param  threshALS  True to enable Threshold ALS interrupt, False to disable.
 * @param  intCount   The interrupt count setting, as defined in the vcnl4020_int_count enum.
 */
void Adafruit_VCNL4020::setInterruptConfig(bool proxReady, bool alsReady, bool thresh, bool threshALS, vcnl4020_int_count intCount) {
  // Create an I2C Register object for Register #9 (INTERRUPT CONTROL REGISTER)
  Adafruit_I2CRegister interrupt_control_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_INTERRUPT_CONTROL);
  
  // Initialize a variable to hold the register value
  uint8_t regValue = 0;
  
  // Set the individual bits based on the function arguments
  if (proxReady) regValue |= (1 << 5);
  if (alsReady)  regValue |= (1 << 4);
  if (thresh)    regValue |= (1 << 3);
  if (threshALS) regValue |= (1 << 2);
  
  // Add the intCount value (bits 0-2)
  regValue |= intCount;
  
  // Write the value to the register
  interrupt_control_reg.write(regValue);
}

In this function, we use Adafruit_I2CRegister to create a register object for INTERRUPT CONTROL REGISTER #9. We then use bitwise operations to set the individual bits based on the function arguments. Finally, we use the write() method of Adafruit_I2CRegister to write the value to the register.

Make sure to add this function after your class's existing methods in the .cpp file.

Certainly! Using Adafruit_I2CRegisterBits objects for each field will make the code more readable and easier to maintain, even if it's a bit slower due to multiple I2C transactions.

Here's how you can implement the setInterruptConfig function using Adafruit_I2CRegisterBits:

arduinoCopy code
/*!
 * @brief  Sets the Interrupt Configuration for INTERRUPT CONTROL REGISTER #9.
 * @param  proxReady  True to enable Proximity Ready interrupt, False to disable.
 * @param  alsReady   True to enable Ambient Light Sensor Ready interrupt, False to disable.
 * @param  thresh     True to enable Threshold interrupt, False to disable.
 * @param  threshALS  True to enable Threshold ALS interrupt, False to disable.
 * @param  intCount   The interrupt count setting, as defined in the vcnl4020_int_count enum.
 */
void Adafruit_VCNL4020::setInterruptConfig(bool proxReady, bool alsReady, bool thresh, bool threshALS, vcnl4020_int_count intCount) {
  // Create an I2C Register object for Register #9 (INTERRUPT CONTROL REGISTER)
  Adafruit_I2CRegister interrupt_control_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_INTERRUPT_CONTROL);
  
  // Create bit accessors for each field
  Adafruit_I2CRegisterBits prox_ready_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 5);
  Adafruit_I2CRegisterBits als_ready_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 4);
  Adafruit_I2CRegisterBits thresh_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 3);
  Adafruit_I2CRegisterBits thresh_als_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 2);
  Adafruit_I2CRegisterBits int_count_bits = Adafruit_I2CRegisterBits(&interrupt_control_reg, 3, 0);
  
  // Write the values to the register bits
  prox_ready_bit.write(proxReady ? 1 : 0);
  als_ready_bit.write(alsReady ? 1 : 0);
  thresh_bit.write(thresh ? 1 : 0);
  thresh_als_bit.write(threshALS ? 1 : 0);
  int_count_bits.write(intCount);
}

In this function, we first create an Adafruit_I2CRegister object for INTERRUPT CONTROL REGISTER #9. Then, we create Adafruit_I2CRegisterBits objects for each field in the register. Finally, we use the write() method of Adafruit_I2CRegisterBits to set the value for each field.

Make sure to add this function after your class's existing methods in the .cpp file.

I apologize for the oversight. Based on the information from the datasheet, the bit offsets for the INTERRUPT CONTROL REGISTER #9 are as follows:

• Int count exceed: Bits 6
• INT_PROX_ready_EN: Bit 5
• INT_ALS_ready_EN: Bit 4
• INT_THRES_EN: Bit 3
• INT_THRES_SEL: Bits 2, 1, 0

Here's how you can implement the setInterruptConfig function using Adafruit_I2CRegisterBits with the correct bit offsets:

arduinoCopy code
/*!
 * @brief  Sets the Interrupt Configuration for INTERRUPT CONTROL REGISTER #9.
 * @param  proxReady  True to enable Proximity Ready interrupt, False to disable.
 * @param  alsReady   True to enable Ambient Light Sensor Ready interrupt, False to disable.
 * @param  thresh     True to enable Threshold interrupt, False to disable.
 * @param  threshALS  True to enable Threshold ALS interrupt, False to disable.
 * @param  intCount   The interrupt count setting, as defined in the vcnl4020_int_count enum.
 */
void Adafruit_VCNL4020::setInterruptConfig(bool proxReady, bool alsReady, bool thresh, bool threshALS, vcnl4020_int_count intCount) {
  // Create an I2C Register object for Register #9 (INTERRUPT CONTROL REGISTER)
  Adafruit_I2CRegister interrupt_control_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_INTERRUPT_CONTROL);
  
  // Create bit accessors for each field
  Adafruit_I2CRegisterBits int_count_bits = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 6);
  Adafruit_I2CRegisterBits prox_ready_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 5);
  Adafruit_I2CRegisterBits als_ready_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 4);
  Adafruit_I2CRegisterBits thresh_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 3);
  Adafruit_I2CRegisterBits thresh_als_bits = Adafruit_I2CRegisterBits(&interrupt_control_reg, 3, 0);
  
  // Write the values to the register bits
  int_count_bits.write(intCount);
  prox_ready_bit.write(proxReady ? 1 : 0);
  als_ready_bit.write(alsReady ? 1 : 0);
  thresh_bit.write(thresh ? 1 : 0);
  thresh_als_bits.write(threshALS ? 1 : 0);
}

In this corrected version, the bit offsets are set according to the datasheet. Make sure to add this function after your class's existing methods in the .cpp file.

Thank you for clarifying the bit offsets. Based on your information, here's the corrected implementation of the setInterruptConfig function using Adafruit_I2CRegisterBits:

arduinoCopy code
/*!
 * @brief  Sets the Interrupt Configuration for INTERRUPT CONTROL REGISTER #9.
 * @param  proxReady  True to enable Proximity Ready interrupt, False to disable.
 * @param  alsReady   True to enable Ambient Light Sensor Ready interrupt, False to disable.
 * @param  thresh     True to enable Threshold interrupt, False to disable.
 * @param  threshALS  True to enable Threshold ALS interrupt, False to disable.
 * @param  intCount   The interrupt count setting, as defined in the vcnl4020_int_count enum.
 */
void Adafruit_VCNL4020::setInterruptConfig(bool proxReady, bool alsReady, bool thresh, bool threshALS, vcnl4020_int_count intCount) {
  // Create an I2C Register object for Register #9 (INTERRUPT CONTROL REGISTER)
  Adafruit_I2CRegister interrupt_control_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_INTERRUPT_CONTROL);
  
  // Create bit accessors for each field
  Adafruit_I2CRegisterBits int_count_bits = Adafruit_I2CRegisterBits(&interrupt_control_reg, 3, 6);
  Adafruit_I2CRegisterBits prox_ready_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 3);
  Adafruit_I2CRegisterBits als_ready_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 2);
  Adafruit_I2CRegisterBits thresh_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 1);
  Adafruit_I2CRegisterBits thresh_als_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 0);
  
  // Write the values to the register bits
  int_count_bits.write(intCount);
  prox_ready_bit.write(proxReady ? 1 : 0);
  als_ready_bit.write(alsReady ? 1 : 0);
  thresh_bit.write(thresh ? 1 : 0);
  thresh_als_bit.write(threshALS ? 1 : 0);
}

In this corrected version, the bit offsets are set according to your provided information. Make sure to add this function after your class's existing methods in the .cpp file.

Thank you for pointing out the correct bit positions for int_count_bits. Here's the updated implementation of the setInterruptConfig function:

arduinoCopy code
/*!
 * @brief  Sets the Interrupt Configuration for INTERRUPT CONTROL REGISTER #9.
 * @param  proxReady  True to enable Proximity Ready interrupt, False to disable.
 * @param  alsReady   True to enable Ambient Light Sensor Ready interrupt, False to disable.
 * @param  thresh     True to enable Threshold interrupt, False to disable.
 * @param  threshALS  True to enable Threshold ALS interrupt, False to disable.
 * @param  intCount   The interrupt count setting, as defined in the vcnl4020_int_count enum.
 */
void Adafruit_VCNL4020::setInterruptConfig(bool proxReady, bool alsReady, bool thresh, bool threshALS, vcnl4020_int_count intCount) {
  // Create an I2C Register object for Register #9 (INTERRUPT CONTROL REGISTER)
  Adafruit_I2CRegister interrupt_control_reg = Adafruit_I2CRegister(_i2c, VCNL4020_REG_INTERRUPT_CONTROL);
  
  // Create bit accessors for each field
  Adafruit_I2CRegisterBits int_count_bits = Adafruit_I2CRegisterBits(&interrupt_control_reg, 3, 5); // Bits 5, 6, 7
  Adafruit_I2CRegisterBits prox_ready_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 3); // Bit 3
  Adafruit_I2CRegisterBits als_ready_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 2); // Bit 2
  Adafruit_I2CRegisterBits thresh_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 1); // Bit 1
  Adafruit_I2CRegisterBits thresh_als_bit = Adafruit_I2CRegisterBits(&interrupt_control_reg, 1, 0); // Bit 0
  
  // Write the values to the register bits
  int_count_bits.write(intCount);
  prox_ready_bit.write(proxReady ? 1 : 0);
  als_ready_bit.write(alsReady ? 1 : 0);
  thresh_bit.write(thresh ? 1 : 0);
  thresh_als_bit.write(threshALS ? 1 : 0);
}

In this updated version, the int_count_bits are set to occupy bits 5, 6, and 7 of the register, as you indicated. Make sure to add this function after your class's existing methods in the .cpp file.

Of course! Have a good night's sleep, and we can continue working on the Arduino library for the VCNL4020 chip when you're ready. Your progress will be saved, so we can pick up right where we left off. Goodnight! 😴