Has anyone tried to emulate CEC(Consumer Electronics Control) using GPIO?

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Has anyone tried to emulate CEC(Consumer Electronics Control) using GPIO?

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koichimatsuo
NXP Employee
NXP Employee

About HDMI CEC

High-Definition Media Interface (HDMI) incorporates a single-wire interface called Consumer Electronics

Control (CEC) in order to support 'one touch' control features in newer audio/visual systems.

CEC is not a conventional bus and is not readily found on microcontrollers like the more common protocols I2C or SPI.

Currently TI is emulating this interface using GPIO.

Has anyone tried to emulate this interface using GPIO?

http://www.ti.com/lit/an/slaa377/slaa377.pdf


Regards,

Koichi

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chetkaufman
NXP Employee
NXP Employee

I have a customer who also wants to control CEC line using a MCU GPIO line.    Can I have access to the answer that was provided to Koichi Matsuo?

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karina_valencia
NXP Employee
NXP Employee

michaelsteffenfae​  can you help Chester?

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karina_valencia
NXP Employee
NXP Employee

HI Koichi,

follow up will be provided in your internal post. I will close this  one.