Opt3001

Python support library for the light sensor OPT3001 from Texas Instruments

Description

Contents

• Description
• Contents
• Install
• Usage
• Flight Manual
• Development
• Team
• License

Install

• sudo apt-get install -y python-smbus
• pip install opt3001

Usage

import opt3001 from opt3001

address = 0x44

opt = opt3001.OPT3001(address) 

# Configure to run in Continuous conversions mode
opt.write_config_reg(opt3001.I2C_LS_CONFIG_CONT_FULL_800MS)

while(True):
  print(opt.read_lux_float())
  time.sleep(1)

Raspberry pi

Add following line to /etc/modules to start i2c module on startup:

i2c_dev

Run following commands to start the i2c modules manually:

$ modprobe i2c-bcm2708
$ modprobe i2c_dev

Install i2c-tools to test with the terminal

$ sudo apt-get install i2c-tools

Run following command to get the address of the opt3001

$ i2cdetect -y 1

     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- 44 -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --

Run the following command to test the opt30001

$ i2cget -y 1 0x44 0x00

0x0b

Flight Manual

Constants

Constant	Description	Value
I2C_LS_CONFIG_DEFAULT	OPT3001 default settings	0xc810
I2C_LS_CONFIG_CONT_FULL_800MS	settings for continuous measurement	0xcc10
I2C_LS_REG_RESULT	Result Register	0x00
I2C_LS_REG_CONFIG	Configuration Register	0x01
I2C_LS_REG_LOWLIMIT	Low Limit Register	0x02
I2C_LS_REG_HIGHLIMIT	High Limit Register	0x03
I2C_LS_REG_MANUFACTURERID	Manufacturer ID	0x7E
I2C_LS_REG_DEVICEID	Device ID Register	0x7F

OPT3001

constructor

Input:

• address - i2c address of the opt3001
• bus - default 1

read_lux_fixpoint

Read the brightness of the opt3001 with two fixed decimal places

read_lux_float

Read the brightness of the opt3001 as float

read_manufacture_id

Read manufacture id of the opt3001

read_device_id

Read device id of the opt3001

write_config_reg

Write data to config register

Input:

• data - configuration data to write to registry

read_register_16bit

reads a register of the opt3001

write_register_16bit

Write to a register of the opt3001

Input:

• adr - registeradress to write to
• data - 16bit data to write to registry

Development

Build

python setup.py sdist bdist_wheel

Upload

twine upload dist/*

Team

• Thomas Pöhlmann (@perryrh0dan)

Licence

MIT

This repository was generated by tmpo