MicroPython Forum (Archive)

I tried the compile and it worked. Which version of the xtensa gcc compiler do you use? Mine is: esp-open-sdk$ xtensa-lx106-elf-gcc --version xtensa-lx106-elf-gcc (crosstool-NG crosstool-ng-1.22.0-60-g37b07f6f) 4.8.5 Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the so...

That's also what I recall. The 1M flash version has a small file system. But since you flashed it, you have the proof.

You're welcome. Looking back I could have come to a working version a little bit earlier. But taking the I2C instantiation out of the driver is anyhow the better approach, offering freedom in selecting different I2C interfaces.

So the driver is working. The sensor has most probably the resistors inside.

The address was wrong.

The SHT driver was initially made for an ESP8266 board, which does not need the ID parameter for I2C. So I changed the code a little bit, taking the creating of the I2C object out. It now reads: from machine import I2C, Pin import time __version__ = '0.2.3' __author__ = 'Roberto Sánchez' __license__...

The error is raised by the function that performs the I2C communication. And that function is used by all values you request from the sensor.

OK. I looked into the code. It is a little bit old style by using i2c.start() and i2c.stop(). These are not needed and must be removed.

The pull up resistors do not change the address of your sensor. They change the slew rate of the rising edge in the communication line. So the resistors are required for both sda and scl. It is still possible, that you sensor has these already built-in. You say, it works now, Do you talk about i2c.s...

Try a lower bus freq. i2c.scan() just transmits a single byte per address, so it may succeed, but longer messages will fail.