Sonny, > Chris, it looks like you swapped the set and the clear of this bit, > and you're relying on the fact that the i2c transaction takes a > certain amount of time after the RTC_GET_TIME BIT is set. I'm not > sure how long it actually takes, but why not just put in a usleep() > for the minimum wait time? I think we are safe. At 400kHz (the max speed of this part) each bit can be transferred no faster than 2.5us. In order to do a valid i2c transaction we need to _at least_ write the address of the device and the data onto the bus, which is 16 bits. 16 * 2.5us = 40us. That's above the 31.25us Personally I think what Chris has is fine, with the comment. -Doug
