timed out while waiting for data to be sent timed out while trying to become Bus Master other twi error (lost bus arbitration, bus error. Include the correct library - Wherever you would normally have put this: There is no need to change or discard the Arduino Wire library that comes with arduino. This folder will need to be created if you haven't done so for another 3rd party library already. The WSWire folder should be installed just like any other 3rd party arduino library, in the "libraries" folderof your Arduino sketchbook directory ( the folder where arduino creates new sketches by default). You will need external pullup resistors, or another device that has pullups enabled, or just change the two lines in twi.h that contain digitalWrite commands. HARDWARE I2C BUS NOTE: This library also disables the arduino pullup resistors on SDA and SCL lines, contrary to the standard wire lib, which enables the pullups. It is probably not the best solution for this problem, but it does appear to work! After 100000 iterations of the while() loop it simply breaks the while loop and re-runs twi_init() to reinitialize the TWI perhipheral and I2C pins of the AVR. This is a modification of the Arduino Wire Library, to add timeouts to the freeze-prone TWI while() loops.
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