March 2017
Intermediate to advanced
732 pages
15h 24m
English
Content preview from GNU/Linux Rapid Embedded ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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The SPI tools
In complete analogy to the I2C case, even for SPI, we have some basic tools to manage it. However, as stated earlier, this time, these tools are not into a dedicated Debian package, but they are stored directly in the Documentation/spi/ directory of Linux's sources repository. Honestly, these SPI tools offer a poor support against the I2C counterpart. However, they can be used for basic functionalities and taken as examples to build our own programs.
As shown here, the available programs are just two:
$ ls Documentation/spi/*.c Documentation/spi/spidev_fdx.c Documentation/spi/spidev_test.c
Both of them can be compiled on the host PC (or directly on our embedded kits) using the following command:
$ make CC=arm-linux-gnueabihf-gcc CFLAGS="-Wall ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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