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by fraverg
Thu Sep 06, 2012 8:37 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Additional TTL on I2C or SPI?
Replies: 11
Views: 9722

Re: Additional TTL on I2C or SPI?

as davidman said all 5V signals in input on the GPIO shall be dropped down to 3.3V to avoid damages. The question is: how can I use 8 GPIO pin as bidirectional data bus? I mean that the same 8 bit can be configured as input or output depending on the program needing. Does a kind of bidirectional "vo...

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