Infinite loop in the function "i2c_reset(i2c_t port)" about wpi_soft_i2c HOT 3 CLOSED

Hi, thank you.

You are right, loop in i2c_reset has no exit condition. I will change that part of code.

Anyways, I can think of two reasons that keep you reading 0 after a reset sequence:

• Your i2c bus is not pulled-up, check your pull-up resistors.
• There is another device that maintains the clock line down, it may be busy or defective.

Regards.

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My circuit was a bit defective and now I have corrected it. Also, I tried pulling up the bus with different resistors, but I got a reading of '255' for all the cases throughout without any change.

I only have a Raspberry Pi and a single PCF8591, so I guess no other device could interfere.

Also, when I connect an oscilloscope to the SCL and SDA line, I did not see any signals.

from wpi_soft_i2c.

Hello. I commited a fix to solve the infinite loop. Now it waits for some time for the bus to be released. After that time it returns and shows a warning message.

$ ./i2cli 25 24
I2C Command Line Interface
Warning: I2C Bus busy or defective.
...
i2cli> R
Warning: I2C Bus busy or defective.
i2cli>

Best regards.

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