MicroPython Forum

No. It would require significant changes. Worse, it would defeat the object of the design. The aim is to have internet facing applications running on a device with an OS, with an internet connection which is under OS control. Hence the inherent unreliability of a WiFi link affects just one interface...

This project evolved since my first post and became a collaboration between myself and Kevin Köck. Key features: The API is similar for client and server applications. It is cross-platform supporting ESP8266 and Pyboard D clients. It supports guaranteed message delivery: a message will be delivered ...

Some ESP8266 boards require special esptool args. I have found the following -fm values to work on some hardware: esptool.py --port /dev/ttyUSB0 --baud 115200 write_flash --verify --flash_size=8m -fm qio 0 build/firmware-combined.bin esptool.py --port /dev/ttyUSB0 --baud 115200 write_flash --verify ...

... Apart from the imports main.py is empty. I would suggest having main.py completely empty during development; also issuing a soft reset (ctrl-D) between each run. I have seen similar errors: I've never managed to pin down the exact cause, but they seem to stem from failing to "clear the decks" b...

At risk of suggesting the obvious, have you tried running the code under CPython to see if it offers a more comprehensive traceback?

I've posted this unofficial guide to the Pyboard D. Some of the content is based on my testing, the rest on information from Damien (reproduced with his permission).

Any additions/corrections/PR's/comments from those with boards are welcome.

Quite. But the internal pullup value is probably too large for reliable I2C operation. This is relevant for anyone using soft I2C.

The Pyboard 1.x has physical 4.7KΩ resistors to 3.3V on both I2C ports so there is no need for special coding.

... >>>from machine import I2C, Pin >>>i2c = I2C(scl=Pin(5),sda=Pin(4)) ## Works OK Now back to the README.md instructions, with some misguided initiative: >>>imu = MPU9250(i2c) ... That is the correct way to set it up, and your scan result is correct. The fact that you're getting ValueError: Bad c...

You need to read up on Python packages. The server example I gave you is organised as a package, and the import is from __init__.py. However I wouldn't spend time trying to follow the application code. I suggest you look at the _send and _read methods as examples of how to write to and to read from ...