suspect-devices/circuitpython/tests/extmod/machine_mem.py.exp, branch cross CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=cross 2016-07-31T01:22:09+00:00 tests/machine_mem.py: Too non-portable, rework as an example for unix port. 2016-07-31T01:22:09+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2016-07-31T01:20:48+00:00 urn:sha1:eb0e3bab1ed5aa09e491641f427a5d637fe688bd modmachine: Implement physical memory access using /dev/mem (Linux, etc). 2015-07-08T08:37:23+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2015-07-05T21:08:33+00:00 urn:sha1:354d17523f599746a84e5b22fa670c9910137947 This requires root access. And on recent Linux kernels, with CONFIG_STRICT_DEVMEM option enabled, only address ranges listed in /proc/iomem can be accessed. The above compiled-time option can be however overriden with boot-time option "iomem=relaxed". This also removed separate read/write paths - there unlikely would be a case when they're different.