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vzgromozdun

Member Since 31 Jul 2011
Offline Last Active Mar 17 2012 08:36 PM

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In Topic: Netduino 4.2 beta 1 + PCF8575 I2C Port expander

23 August 2011 - 09:23 AM

        Dim DEVICE_ID As UShort = &H70 >> 1 'pcf8574a address 0

Not clearly understand why your expander have such address.
Mine works just fine with default 0x20 address (all address pins of expander connected to GND).

Regards,
Dmitry

In Topic: Netduino 4.2 beta 1 + PCF8575 I2C Port expander

08 August 2011 - 07:28 PM

Well, it works right now actually! I did stupid mistake - I have used digital ports 4 and 5 for I2C instead of analog ones. And another one correction - expander works fine with 5k pullup resistors.

vzgromozdun

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In Topic: Netduino 4.2 beta 1 + PCF8575 I2C Port expander

In Topic: Netduino 4.2 beta 1 + PCF8575 I2C Port expander

vzgromozdun

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In Topic: Netduino 4.2 beta 1 + PCF8575 I2C Port expander

In Topic: Netduino 4.2 beta 1 + PCF8575 I2C Port expander

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