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Hello,

looks like the routines in dev/i2c/i2c_bitbang.c don't support 
synchronisation ( as in - when raising SCL wait until the SCL line is 
actually up ) which gives endless troubles with slow i2c devices, like 
DDC2 monitors.
Any objections against adding that ( with reasonable bail-out timer of 
course ) to i2c_bitbang_read_byte() and i2c_bitbang_write_byte() ?

have fun
Michael
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