How to get your video codecs working on a Raspberry Pi 3B
This is the second post in a series of articles covering the Raspberry Pi3B’s Audio Codec Support.
As a note, the audio codecs we’re discussing here are the ones found in the Raspberry PI3B, but they’re also the ones that have already been updated for the Raspberry Pis2, Raspberry Pi1 and Raspberry Pi Zero.
If you’re interested in seeing how the codecs work on a real Pi, you can read our review of the Pi3A codec.
If this isn’t your cup of tea, you should check out our guide to the RaspberryPi’s audio codec.
Here we go: Raspberry Pi Audio Codec and Support on a Pi3C, Pi3, Pi2 and Pi ZeroWhat’s the difference between the Raspberry-Pi Audio Codecs?
The Audio Codec on the Raspberry PIs1 and Pi3 are based on the Broadcom BCM2835 SoC and the Video Codec on Raspberry Pi2 is based on a Broadcom video codec.
The audio codec is also based on AudioHW.
The AudioHw codec is a codec that has been updated to support the RaspberryPI’s HDMI output.
In order to enable support for the HDMI output of the RaspberryPis3B/Pi3C you need to update your Raspbian image with the appropriate version of the Broadcomm Video codec, which will include the AudioHz codec.
You can find the latest Broadcom Video codec here and the latest AudioHiz codec here.
What’s the Raspberry GPIO header on a raspberry Pi3?
The GPIO header of a RaspberryPi3 has been renamed to GPIO0 in order to better reflect the GPIO pins that power the RaspberryPCs audio codec and video codec, respectively.
The GPIO0 pin is usually used to trigger a GPIO4 pin on the Pi2.
This is a common pin that the Raspberry is connected to in order for the Pi to communicate with the Pi’s GPIO4.
However, on the latest Raspberry Pi 2 and 3 the GPIO4 on the pin can be used for GPIO0 instead of GPIO4, which is not what we would want.
To use GPIO0 for GPIO4 you need a GPIO3.
GPIO3 on the other hand can be switched on/off using the GPIO1 pin on a GPIO2.
As you can see, the GPIO3 pin has been upgraded from GPIO1 to GPIO3 to allow the GPIO2 to be connected to GPIO4 instead of the GPIO0.
This means that you can also switch the GPIOs on/offs on the GPIO ports on a device using the same pins.
The Raspberry Pi GPIO Header and GPIO Ports on the Raspi3B What are the Raspberry’s GPIO Ports?
The RaspberryPi GPIO pins are connected to the GPIO pads on the rear of the motherboard, which you can use to access your GPIO ports.
The pins can be accessed using the four rows of GPIO pads in the image above.
The following image shows the GPIO headers on the top row and the pads on each row.
You’ll note that there’s only one GPIO1 in the board: The one labelled GPIO1 is connected directly to the audio audio output.
The two labelled GPIO2 and GPIO3 are connected directly, respectively, to the video audio output and video audio input.
This allows the Raspberry to control the audio output of a device.
If the audio outputs are switched on and off via GPIO0, then the video outputs will also be turned on and you’ll be able to control them.
As mentioned above, the Raspberry doesn’t have any audio audio out ports on it.
The video outputs can also be controlled by GPIO0 using the corresponding GPIO1 pins on the board.
The four GPIO pads are connected on the bottom row to the two rows above them.
The row below the two pins is labelled GPIO0 and GPIO1.
This corresponds to the pins on a standard GPIO3, so we can use that as a reference.
If we connect GPIO0 to GPIO1, the four GPIO pins will be connected directly and we can turn on/turn off the audio and video outputs of a specific device using these GPIO pins.
This works for audio devices that have no GPIO1 inputs, but it won’t work for devices that need audio inputs from GPIO0 on GPIO1 for audio to work.
As such, the following image gives you an idea of how to access the GPIO outputs of an audio device via GPIO1: If you want to change the output pins of an input device using GPIO0 or GPIO1 on the RPi3, you need some special tools.
You need to connect the GPIO connector from the audio device to the input device, so that the audio input will output the correct GPIO0 value.
The pin labelled GPIO3 is used to control GPIO0: GPIO3 can be turned off, on, or off.
In this case, GPIO3 would be connected and GPIO0 would be off.