I2C interface

[epage]

I'm currently use the differential pressure sensor D6F-PH from OMRON with my LOPY. Unfortunatly It seems there's no driver for this sensor. And the data sheet seems indistinct for this purpose.
any help ?

[livius]

@epage said in I2C interface:

D6F-PH

it is i2c based and because of that it is simple to use
https://www.omron.com/ecb/products/sensor/special/mems/pdf/AN-D6F-PH-01EN_r1.pdf
look into this thread

https://forum.arduino.cc/index.php?topic=285116.0
you must only convert code to micropython which is also quite simple
https://docs.pycom.io/pycom_esp32/library/machine.I2C.html

and real sample
https://docs.pycom.io/pycom_esp32/pycom_esp32/tutorial/includes/i2c.html

[epage]

Thanks a lot ... but
my initialization code for instance based on ARDUINO example :

def initialize ():

#INITIALIZATION AFTER POWER UP
i2c = I2C(0, I2C.MASTER)             # create and init as a master
#i2c.init(I2C.MASTER)
# configure the I2C bus
i2c.init(I2C.MASTER, baudrate=400000) # init as a master
i2c.writeto(0x6C, 0x0B) 
i2c.writeto(0x6C, 0x00)
print ("Initialization done: ")

give me :
TypeError: object with buffer protocol required for this line :
i2c.writeto(0x6C, 0x0B)
I don't understand.. what's the correct instruction ?
Thanks for help

[livius]

@epage
you must pass bytes

i2c.writeto(0x6C, bytes([0x0B]))

[epage]

Thanks a lot !
Now I must translate ARDUINO code