using tsl2561 light sensor with a pyboard

[pythoncoder]

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Is this correct way to access HW I2C.

import tsl2561
from machine import Pin, I2C
i2c = machine.I2C(scl = machine.Pin(12), sda = machine.Pin(13), freq = 10000)
sensor = tsl2561.TSL2561(i2c)
sensor.read()

No, that is how to set up software I2C. To set up hardware I2C you need to specify the bus number. The pins are defined in hardware.

Code: Select all

i2c = machine.I2C(1)

will provide I2C on pins X9 (scl) and X10 (sda). You can provide freq = 10000 to override the default 400KHz.

[IHOXOHI]

Hi,

I can use the tsl2591 and pyboard with this library at :https://github.com/jfischer/micropython-tsl2591

And the code:

Code: Select all

import tsl2591
import machine

i2c = machine.I2C(-1, scl = machine.Pin('Y9'), sda = machine.Pin('Y10'), freq = 10000)


sensor = tsl2591.Tsl2591(i2c)

full, ir = sensor.get_full_luminosity()  # read raw values (full spectrum and ir spectrum)

lux = sensor.calculate_lux(full, ir)  # convert raw values to lux

print(lux, full, ir)