Date: Mon, 18 Mar 2019 10:07:50 -0600 From: Ian Lepore <ian@freebsd.org> To: Kaya Saman <kayasaman@optiplex-networks.com>, Michael Zhilin <mizhka@gmail.com>, "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>, Mori Hiroki <yamori813@yahoo.co.jp> Subject: Re: Options for FBSD support with LCD device - new project Message-ID: <0ecf23e129ca7ac6a92a01bbb34c03f1ac8c6dc8.camel@freebsd.org> In-Reply-To: <8df902f6-20a3-31c4-71ac-91f5d5fdf50d@optiplex-networks.com> References: <ad61a598-53af-02a5-41db-0128da7d1a34@optiplex-networks.com> <CAF19XBLAjP4yKtGSBzA4QdT346Bnbnr8MutQNZgmERLbJkWAyA@mail.gmail.com> <8df902f6-20a3-31c4-71ac-91f5d5fdf50d@optiplex-networks.com>
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On Mon, 2019-03-18 at 15:56 +0000, Kaya Saman wrote: > Many thanks Michael! > > > I have also found this guide too: > https://www.rototron.info/lcdproc-tutorial-for-raspberry-pi/ > > > It goes through the GPIO connection using a Raspberry Pi and a CF > HD44780 compatible display. This should also work in a similar > fashion > with the Odroid. > Before you go too far down this path, you should probably be aware that odroid isn't really supported on freebsd. There was some initial work done to support the original C1, but it was basically a drive-by commit which hasn't been actively supported since then. You should consider some well-supported board, something based on an Allwinner or imx6 SOC would be a good candidate. Gpio sounds like about the worst way to connect a display. Something based on i2c or SPI would be a much better choice. Usually the so- called "usb" solutions are really just forms of i2c or SPI being bit- banged by an FTDI chip. Not a horrible solution, but probably not quite as efficient as native i2c or spi. -- Ian
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