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  • TI Thinks Resolved

TIDA-01069: TIDA-01069

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Replies: 1

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Part Number: TIDA-01069

HI, Texas team,

I'm designing a PIR sensor module and want it to be advanced motion detector as per the article which you have given. I've gone through all the documents and schematics and just want to know that can we use this directly without programming or should we program the HDC1010YPAR & OPT3002DNPR & ADS1114IDGSR as these use I2C or we can use the given I2C address from the given schematic docs and build our own schematic and start using ?

Help is appreciated 

thanks 

  • Sounds like you are asking two separate questions.

    1. Do you need to program the HDC, OPT, and ADC before use: Each of the devices has a config register which is used to set certain operating modes. For example, the ADC has a config register that allows you to select the gain of the PGA block. The I2C bus is also used to get data from these devices. The configuration must be carried out the system micro-controller via the I2C bus. Therefore, yes, programming/configuration is required.

    2. Do you need to use the same I2C addresses as the TI design schematic: No. You can select whatever I2C address you prefer. Just check the I2C addressing requirements in the datasheet for each of the devices you list to make sure you meet those requirements.

    Please let me know if this clarifies your query.

    Gus Martinez

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