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56 Commits

Author SHA1 Message Date
Scott Shawcroft
e9659e61f8 Switch enum-like attributes to all caps and add print support for them. Make room for this functionality by adding a shared __enter__ function object. #76 2017-02-19 16:11:33 +01:00
Scott Shawcroft
26229efe78 Add try_lock and unlock to I2C and SPI classes to make sure things 
are shared well between threads and underlying MicroPython (SPI Flash
for example.)

It is recommended to use the bus device classes to manage the locks
and other transaction state.

https://github.com/adafruit/Adafruit_MicroPython_BusDevice

Fixed #58
Fixed #59
Fixed #60
 2016-12-02 15:46:12 -08:00
Scott Shawcroft
9b3afc7b37 shared-bindings: Make MOSI and MISO optional for SPI. 2016-11-29 16:54:20 -08:00
Scott Shawcroft
4933fa1c27 shared-bindings: Ensure pin objects are actually pins. 
Fixes #12
 2016-11-29 15:50:01 -08:00
Scott Shawcroft
ea1320bee7 Add uheap for debugging the size of objects. Still not perfect though. 2016-11-22 17:32:28 -08:00
Scott Shawcroft
ccbb5e84f9 This introduces an alternative hardware API called nativeio structured around different functions that are typically accelerated by native hardware. Its not meant to reflect the structure of the hardware. 
Docs are here: http://tannewt-micropython.readthedocs.io/en/microcontroller/

It differs from upstream's machine in the following ways:

* Python API is identical across ports due to code structure. (Lives in shared-bindings)
* Focuses on abstracting common functionality (AnalogIn) and not representing structure (ADC).
* Documentation lives with code making it easy to ensure they match.
* Pin is split into references (board.D13 and microcontroller.pin.PA17) and functionality (DigitalInOut).
* All nativeio classes claim underlying hardware resources when inited on construction, support Context Managers (aka with statements) and have deinit methods which release the claimed hardware.
* All constructors take pin references rather than peripheral ids. Its up to the implementation to find hardware or throw and exception.
 2016-11-21 14:11:52 -08:00