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BF609 I2C Stuck

Question asked by oferorgal on Mar 29, 2016
Latest reply on Mar 31, 2016 by Jithul_Janardhanan


I have an I2C bus with the BF as master and image sensor and display as slaves.

I have a problem that the I2C bus gets stuck at LOW (0V) sometimes (not all the time) when I try to rd/wr to the slave devices.

Now, the slave devices seems ok and I checked them with DLN2 that can function as I2C master.

I've tried several pullup resistors to try to fix the problem but non of them prevented the problem (10K did not pull the line HIGH, 4.7K most of the time did not work, 1.5K worked most of the time but not all, 240ohm pulled the line HIGH but it did not go LOW).

Is thier a way to increase the drive of the TWI or is thier some other solution?