i2c.readfrom timeout

[pmulvey]

I am talking to my Arduino from ESP8266 via i2c. The Arduino code can sometimes take up to 36mS to complete the code that responds to the i2c.readfrom command at the ESP. After a few transactions the ESP throws an error:

Code: Select all

  File "IO.py", line 110, in read
OSError: I2C bus error

Does anyone know if there is a timeout setting that I can use because I'm guessing that this is the problem.

[pythoncoder]

Bus errors are often caused by electrical problems, especially missing pullup resistors or ones with too high a value. Also ensure that the wires are reasonably short and that you have a reliable common ground connection.

[shaoziyang]

You may try reduce the frequency of the I2C bus.