MicroPython Forum (Archive)

With 4 lines, it's hard to imagine it's wired incorrectly. I can try to add pull-ups. I'll also check the voltage levels on SDA & SCL. However I'm late for an appt. so I'm done for the day. I really appreciate your help. I'll be back tomorrow.

Yep, returns immediately if I disconnect everything. Any idea what type of hardware issue this might be?

Actually it's taking longer than 30 seconds before it returns. It's taking minutes. But it will return if I wait long enough. I'm guessing this isn't normal.

Yes, I cycled power. As I stated previously, when I run the scan() function, I get a flashing cursor in REPL for about 30 seconds and then I get [] showing that it has found nothing. It is acting exactly as it did before I connected CSB to Vcc.

Still hanging.

It's on a breakout board. It has 6 pins; Vcc, GND, SCL, SDA, CSB and SDO. I'm connecting for I2C using just the first 4 pins. We can communicate here.

Thanks for your reply. I have posted to the Pycom forum but haven't received any replies as of yet. So, you are saying that what I've done as far as setting up the I2C communication path should be correct and I should be seeing something coming back from the i2c.scan() function, correct? Setting bau...

Still having trouble with this. First, I'm just trying to verify communication with the BME280 sensor via I2C and that doesn't appear to be working. Can someone verify that I'm doing this correctly. I'm just trying to setup the I2C communication path and then scan for the sensor's address. It's the ...

I will try later today and report back what I find. From the source code, the library was ported from the original Adafruit BME280 micropython library (which has been deprecated & archived). They have replaced that with their CircuitPython BME280 library but I really haven't dug into the differences...

That would make some sense regarding the error I received. Did you base that on just looking at the source code? Do you have a WiPy 2.0 and a BME280 that you can actually try this with? I'd be interested to know if the problems I'm seeing are associated with my device(s) or are an issue with the lib...