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Altera_Forum's avatar
Altera_Forum
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12 years ago

Getting data from a rtc device through I2C

Hi all, I would like to retrieve information from a RTC device which is directly connected to a GPIO, using the i2c protocol. So, the first step was to load the i2c-gpio driver with this piece ...
Altera_Forum's avatar
Altera_Forum
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9 years ago

In the i2c-gpio method, SCL and SDA signals are generated directly by your Nios CPU, and this is the reason why the SLC clock period is not constant. If you have any doubt, there is another way to use an 'opencore's i2c core'.