Control GPIO ports on A64-OLinuXino
The package provide methods for controlling GPIO pins via memory access. It’s written for A64-OLinuXino, but it can be used with other boards. In this case proper operation is not guaranteed.
When using GPIO make sure that the desired gpio is not used by another periphery.
Using this library requires root access.
Currently (0.1.0) port L is not supported, because the memory cannot be accessed from userspace.
The following methods are available:
init() - Make initialization of the module. Must be called first.
getcfg() - Read current configuration of gpio.
setcfg() - Write configuration to gpio.
input() - Return current value of gpio.
output() - Set output value.
pullup() - Set pull-up/pull-down.
The available constants are:
HIGH - 1
LOW - 0
INPUT - 0
OUPTUT - 1
PULLUP - 1
PULLDOWN - 2
The gpio are named two ways:
By port name: PH0, PG2, PE10, etc. These can be imported from port module:
>>> from pyA64.gpio import port >>> dir(port)
By connector name and pin number: gpio2p12, gpio3p8, lcdp18, uext1p3 and etc:
>>> from pyA64.gpio import connector >>> dir(connector)
Generally these constants are just an offset in the memory from the base GPIO address, so they can be assigned to a number type variable.
>>> led = port.PE17 >>> print led 226
pyA64 0.1.0 (21 NOV 2017)
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