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I2C si7055

I have an si7055 i2c temperature sensor connected to an nRF52840

I've tried my best to get a reading, but failed.

Therefore given up.

I'd be grateful for some help to determine what I've done wrong please.

I've included the project in zipped form for board nrf52840dk.nrf52840

Bluetooth-i2c.zip

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  • Hi,

    Could you explain a bit more what is failing and what you have tried?

    I do not have the sensor available, so I cannot fully test your example, but I did connect a logic analyzer to verify that a write setup for address 0x40 is output on the TWI bus. A NACK is received, as the sensor is not connected.

    Have you checked the bus on your end with a logic analyzer, to see what happens? 

    Best regards,
    Jørgen

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  • Hi,

    Could you explain a bit more what is failing and what you have tried?

    I do not have the sensor available, so I cannot fully test your example, but I did connect a logic analyzer to verify that a write setup for address 0x40 is output on the TWI bus. A NACK is received, as the sensor is not connected.

    Have you checked the bus on your end with a logic analyzer, to see what happens? 

    Best regards,
    Jørgen

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