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I have this simple code:

import smbus

i2c = smbus.SMBus(1)

i2c.read_byte(0x20)

However, I'd like to make the read function non-blocking, or at least have a short timeout (i.e ~100 MS). The reason for this is I'm using a second board to tell if another I2C device gets frozen. I've seen this question, but I think that stopping this function mid-operation would cause the I2C connection to be unstable. Is there any way to set a short timeout for this function?

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