MSP430G2553: MSP430 I2C HTS221 Humidity Temperature sensor

Anonymous

Part Number: MSP430G2553

According to this solution, offered by Gary H, the registers for reading the calibration values and the Output values are 0xB0 and 0xA8, respectively. But in the datasheet those numbers are NOT referenced. Where were this numbers gotten? Is the datasheet incomplete? Is there some sort of operation where the numbers are deducted that I'm missing?

Thanks in advance.

over 7 years ago

0 Cameron LaFollette over 7 years ago

TI__Genius 14875 points

Hi Antonio,
That's not a TI part, so you'd have to ask ST Micro.

0 Bruce McKenney over 7 years ago

Guru 100785 points

I suppose those numbers are HUMIDITY_OUT_L (ff) and CALIB_0 (ff) [Ref Table 15] with the Read bit (0x80) set [ref sec. 5.2.2].

0 Anonymous over 7 years ago in reply to Bruce McKenney

Now my question would be how is one supposed to extrapolate that from the SPI reference if I'm working with I2C...
Anyway, many Thanks, this clears it out.

0 Anonymous over 7 years ago in reply to Anonymous

Ansewring my own question and pointing out my lack of attention:

From section 5.1.1, Paragraph 7:
"In order to read multiple bytes incrementing the register address, it is necessary to assert
the most significant bit of the sub-address field. In other words, SUB(7) must be equal to 1
while SUB(6-0) represents the address of the first register to be read."

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MSP430G2553: MSP430 I2C HTS221 Humidity Temperature sensor