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@fnishio fnishio/apds9960.py
Last active May 4, 2017

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import wiringpi2 as wp
class APDS9960:
# Register addresses
REG_ENABLE = 0x80
REG_ATIME = 0x81
REG_WTIME = 0x83
REG_AILTL = 0x84
REG_AILTH = 0x85
REG_AIHTL = 0x86
REG_AIHTH = 0x87
REG_PILT = 0x89
REG_PIHT = 0x8B
REG_PERS = 0x8C
REG_CONFIG1 = 0x8D
REG_PPULSE = 0x8E
REG_CONTROL = 0x8F
REG_CONFIG2 = 0x90
REG_ID = 0x92
REG_STATUS = 0x93
REG_CDATAL = 0x94
REG_CDATAH = 0x95
REG_RDATAL = 0x96
REG_RDATAH = 0x97
REG_GDATAL = 0x98
REG_GDATAH = 0x99
REG_BDATAL = 0x9A
REG_BDATAH = 0x9B
REG_PDATA = 0x9C
REG_POFFSET_UR = 0x9D
REG_POFFSET_DL = 0x9E
REG_CONFIG3 = 0x9F
REG_GPENTH = 0xA0
REG_GEXTH = 0xA1
REG_GCONF1 = 0xA2
REG_GCONF2 = 0xA3
REG_GOFFSET_U = 0xA4
REG_GOFFSET_D = 0xA5
REG_GOFFSET_L = 0xA7
REG_GOFFSET_R = 0xA9
REG_GPULSE = 0xA6
REG_GCONF3 = 0xAA
REG_GCONF4 = 0xAB
REG_GFLVL = 0xAE
REG_GSTATUS = 0xAF
REG_IFORCE = 0xE4
REG_PICLEAR = 0xE5
REG_CICLEAR = 0xE6
REG_AICLEAR = 0xE7
REG_GFIFO_U = 0xFC
REG_GFIFO_D = 0xFD
REG_GFIFO_L = 0xFE
REG_GFIFO_R = 0xFF
# Enable register bits
ENABLE_GEN = 0b01000000 # Gesture enable
ENABLE_PIEN = 0b00100000 # Proximity Interrupt Enable
ENABLE_AIEN = 0b00010000 # ALS Interrupt Enable
ENABLE_WEN = 0b00001000 # Wait Enable
ENABLE_PEN = 0b00000100 # Proximity Enable
ENABLE_AEN = 0b00000010 # ALS Enable
ENABLE_PON = 0b00000001 # Power ON
# Congiguration register 2
CONFIG2_LEDBOOST_150 = (1 << 4) # LED boost 150%
CONFIG2_LEDBOOST_200 = (2 << 4) # LED boost 300%
CONFIG2_LEDBOOST_300 = (3 << 4) # LED boost 300%
GCONFIG3_GDIMS_LR = 2
GCONFIG3_GDIMS_UD = 1 # 01
GCONFIG4_GMODE = 1 # Gesture mode
def __init__(self, i2c_addr = 0x39):
self.i2c_addr = i2c_addr
self.i2c = wp.I2C()
self.fd = self.i2c.setup(i2c_addr)
def _write(register, data8):
self.i2c.writeReg8(self.fd, register, data8)
def _read(register):
self.i2c.readReg8(self.fd, self.register)
def initialize(self):
if (self.get_device_id() != 0xAB):
return false
self.write(self.REG_ENABLE,
self.ENABLE_PON | self.ENABLE_PEN | self.ENABLE_GEN)
self.write(self.REG_CONFIG2,
self.CONFIG2_LEDBOOST_300)
self.write(self.REG_GOFFSET_U, 70)
self.write(self.REG_GOFFSET_D, 0)
self.write(self.REG_GOFFSET_L, 10)
self.write(self.REG_GOFFSET_R, 34)
self.write(self.REG_CONFIG3,
self.GCONFIG3_GDIMS_UD | self.GCONFIG3_GDIMS_LR)
self.write(self.REG_GCONFIG4, GCONFIG4_GMODE)
def get_device_id(self):
return _read(self.REG_ID)
def gesture(self):
level = _read(self.REG_GFLVL)
if (level == 0):
return # no data
fifo_u = _read(self.REG_GFIFO_U)
fifo_d = _read(self.REG_GFIFO_D)
fifo_l = _read(self.REG_GFIFO_L)
fifo_r = _read(self.REG_GFIFO_R)
if __name__ == '__main__':
sensor = APDS9960()
print("device ID: {:#X}".format(sensor.get_device_id()))
sensor.initialize()
sensor.gesture()
@Stan92

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Stan92 commented Apr 14, 2017

Hi
I'm trying to use your code but get an error saying '_read' is not defined.
How can I fix it?

@frank-f

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frank-f commented Apr 22, 2017

I don''t think this code ever worked. I modified it to some extend so it reads the device ID, but beyond that this code has a) lots more errors and b) does basically nothing.

@frank-f

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frank-f commented Apr 24, 2017

My main problem is, that I get completely wrong data. For example, get_device_id() returns 0xD0 instead of 0xAB and I have absolutely no clue why it's doing that. I triple checked all registers and addresses, changed the code to use SMbus instead of wiringpi, but I'm still getting the same results. I can control my HD44780 LCD with the same SMbus calls just fine. Also the sensor itself is not broken, because with a C++ program everything works just fine. I am puzzled.

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frank-f commented Apr 24, 2017

Well, disregard my last comment. I was apparently way overdue to sleep last night. 0xD0 is a different sensor, that I have hooked up to my I2C bus aswell. I put the correct I2C address in my script today and wah la, querying the APDS 9660 with python works as expected. :)

@gregmacway

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gregmacway commented May 4, 2017

Same error as Stan above. Frank, can you post your working code?

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