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Change voltage on UART, SPI, GPIO

Question asked by rajtantajtan on Jun 25, 2013
Latest reply on Jun 25, 2013 by Anson Huang

Hi

 

According to i.MX28 Applications Processor Reference Manual it is possible to change voltage on GPIO to 1.8V or 3.3V.

Does this mean that it is possible to change voltage on UART and SPI also or is it just when those pins are configured as GPIO?

 

Where and how do I configure the mux registers when I'm building the whole thing with Yocto?

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