Hi,
On the page “I2C clock” (http://www.ulisp.com/show?1DO6) it is stated:
“I used the default I2C address for each device; #x70 for the RTC, and #x68 for the display.”
Yet the code refers to the RTC on the I2C address #x68 and display on address #x70.
Reading the literature on at least the RTC, I’m guessing the code is correct, and the line in the documentation needs fixing.
Thanks!