May 2019
Intermediate to advanced
356 pages
9h 6m
English
Content preview from Linux Device Driver Development Cookbook
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Using a device tree to describe a character driver
To test the code presented in the recipe in the chapter and to show how everything works, we have to compile it before any further steps are taken:
$ make KERNEL_DIR=../../../linuxmake -C ../../../linux \ ARCH=arm64 \ CROSS_COMPILE=aarch64-linux-gnu- \ SUBDIRS=/home/giometti/Projects/ldddc/github/chapter_4/chrdev modulesmake[1]: Entering directory '/home/giometti/Projects/ldddc/linux' CC [M] /home/giometti/Projects/ldddc/github/chapter_4/chrdev/chrdev.o CC [M] /home/giometti/Projects/ldddc/github/chapter_4/chrdev/chrdev-req.o... LD [M] /home/giometti/Projects/ldddc/github/chapter_4/chrdev/chrdev.komake[1]: Leaving directory '/home/giometti/Projects/ldddc/linux'
Then, we have to move the
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