sensirion / embedded-i2c-sht4x Goto Github PK

Hello All,

We have a platform with the nRF52840 and have used the code here for the SHT41-AD1B-R2 part from Sensirion.

We're seeing CRC errors being returned from the sensirion_i2c_init(); and sht4x_measure_blocking_read(); calls.

Just wondering if anyone else here has had an issue with CRC's not being correct using this P/N: SHT41-AD1B-R2.

From looking at the data packet - it appears the temperature part of the data tracks according to the temperature we're monitoring; so the sensor appears operational in that regard. I have a Total Phase Aardvark attached - I can provide logs if anyone wants to see that.

When sending a 0x89 - we're seeing this consistently from the sensor:
0ED8 51 ADE0 FF - is that a valid S/N?

Thanks In Advance,
John W.

I really like the simplicity of this repo.

In "sensirion_i2c.c" sensirion_i2c_read_words, I think this loop is unnecessary :

for (i = 0; i < num_words; ++i) {
        const uint8_t* word_bytes = (uint8_t*)&data_words[i];
        data_words[i] = ((uint16_t)word_bytes[0] << 8) | word_bytes[1];
    }

Isn't it ?