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====== Jednodeskový ARM počítač ODROID-XU4 ======

===== Periferie =====

==== SPI ====

Čipová sada na tomto jednodeskovém počítači bohužel nemá hardwarové SPI. SPI rozhraní je proto softwarově emulované a tím pádem velmi pomalé. (Maximálně stovky kHz.)

sudo apt-get install device-tree-compiler

sudo -s
  fdtput -t x /media/boot/exynos5422-odroidxu3.dtb /spi@12d30000 samsung,spi-src-clk 0
  fdtput -t x /media/boot/exynos5422-odroidxu3.dtb /spi@12d30000 num-cs 0
  fdtput -c /media/boot/exynos5422-odroidxu3.dtb /spi@12d30000/spidev
  fdtput -t s /media/boot/exynos5422-odroidxu3.dtb /spi@12d30000/spidev compatible "spidev"
  fdtput -t x /media/boot/exynos5422-odroidxu3.dtb /spi@12d30000/spidev reg 0
  fdtput -t i /media/boot/exynos5422-odroidxu3.dtb /spi@12d30000/spidev spi-max-frequency 20000000
  fdtput -c /media/boot/exynos5422-odroidxu3.dtb /spi@12d30000/spidev/controller-data
  fdtput -t x /media/boot/exynos5422-odroidxu3.dtb /spi@12d30000/spidev/controller-data cs-gpio 0x46, 0x5, 0x0
  fdtput -t x /media/boot/exynos5422-odroidxu3.dtb /spi@12d30000/spidev/controller-data samsung,spi-feedback-delay 0

[[http://odroid.com/dokuwiki/doku.php?id=en:spi_dot_matrix|source]]

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