I am having problems using a humidity sensor SHT31-D with wire and wire1. I stripped out code from the Adafruit_SHT31 library and to find the issue and it works great with arduino. Whenever endTransmission is called, it puts the Electron into a usage fault (5 flashes). Problem on both wire and wir…

I might be blind, but where are your Wire.begin() or `Wire1.begin() calls? Also what system version are you targeting?

Here is a working library for the SHT31D sensor. [image] More complete SHT-31 library Libraries I’m working on a project that includes a couple of SHT-31 temperature/humidity sensors; they are a great, reasonably inexpensive sensor with ± 2% accuracy, 0.1% repeatability a…

Why are you putting these huge delays between the .write()'s? .write() just caches bytes until the endTransmission() call, which is what sends the message.

Thanks, that was it I was missing the lost the Wire.begin when I stripped the code. I was missing the pinMode(C5, INPUT); before I stripped it all.

The delays are because on one of them aruino or particle, I have had the last serial.print not show up if it something goes wrong really fast after it.

Usage fault with i2c bus wire and wire1 endTransmission

Troubleshooting

RWB March 2, 2018, 11:54pm 3

Here is a working library for the SHT31D sensor.

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Usage fault with i2c bus wire and wire1 endTransmission

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