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+--- Thread: read/write gpio in c example? (/showthread.php?tid=4796)
read/write gpio in c example? - ealbers - 07-23-2017
Can someone please point me to where theres a simple GPIO example in C?
Is the GPIO memory mapped somewhere? I need to read/write the pins at very high speed, so I'd like access as close to the hardware as possible.
Thanks
RE: read/write gpio in c example? - MarkHaysHarris777 - 07-23-2017
(07-23-2017, 05:46 AM)ealbers Wrote: Can someone please point me to where theres a simple GPIO example in C?
Is the GPIO memory mapped somewhere? I need to read/write the pins at very high speed, so I'd like access as close to the hardware as possible.
Thanks
see this link for C++ library
see this link for python gpio control
Both links are useful for C. The Python module is a wrapper; the underlying C code is useful. The C++ library is a good start too. Yes, the gpio(s) are mapped in /dev/mem
Please see the A64 datasheet, and the A64 user manual also.