Merge pull request #979 from Neradoc/add-microcontroller

[Adafruit_Blinka-hackapet.git] / README.rst

diff --git a/README.rst b/README.rst
index 5e806ad9efe439d258776cb5b409d0b7d21d1346..30c64ed22ec25b5a9aabacd352925771e5ea88c5 100755 (executable)
--- a/README.rst
+++ b/README.rst
@@ -6,7 +6,7 @@ Introduction
     :alt: Documentation Status
 
 .. image:: https://img.shields.io/discord/327254708534116352.svg
-    :target: https://discord.gg/nBQh6qu
+    :target: https://adafru.it/discord
     :alt: Discord
 
 .. image:: https://travis-ci.com/adafruit/Adafruit_Blinka.svg?branch=master
@@ -17,41 +17,87 @@ Introduction
     :target: https://github.com/psf/black
     :alt: Code Style: Black
 
-This repository contains a selection of packages mirroring the CircuitPython API
-on hosts running micropython. Working code exists to emulate the CircuitPython packages;
+This repository contains a selection of packages emulating the CircuitPython API
+for devices or hosts running CPython or MicroPython. Working code exists to emulate these CircuitPython packages:
 
-* **board** - breakout-specific pin identities
-* **microcontroller** - chip-specific pin identities
 * **analogio** - analog input/output pins, using pin identities from board+microcontroller packages
-* **digitalio** - digital input/output pins, using pin identities from board+microcontroller packages
 * **bitbangio** - software-driven interfaces for I2C, SPI
+* **board** - breakout-specific pin identities
 * **busio** - hardware-driven interfaces for I2C, SPI, UART
-* **time** * - substitute functions monkey-patched to time module
+* **digitalio** - digital input/output pins, using pin identities from board+microcontroller packages
+* **keypad** - support for scanning keys and key matrices
+* **microcontroller** - chip-specific pin identities
+* **micropython** - MicroPython-specific module
+* **neopixel_write** - low-level interface to NeoPixels
+* **pulseio** - contains classes that provide access to basic pulse IO (PWM)
+* **pwmio** - contains classes that provide access to basic pulse IO (PWM)
+* **rainbowio** - provides the colorwheel() function
+* **usb_hid** - act as a hid-device using usb_gadget kernel driver
 
+For details, see the `Blinka API reference
+<https://circuitpython.readthedocs.io/projects/blinka/en/latest/index.html>`_.
 
 Dependencies
 =============
 
-The Micropython compatibility layers described above are intended to provide a CircuitPython-like API for devices which
-are running CPython or Micropython. Since corresponding packages should be built-in to any standard
-CircuitPython image, they have no value on a device already running CircuitPython and would likely conflict in unhappy ways.
+The emulation described above is intended to provide a
+CircuitPython-like API for devices which are running CPython or
+Micropython. Since corresponding packages should be built-in to any
+standard CircuitPython image, they have no value on a device already
+running CircuitPython and would likely conflict in unhappy ways.
 
 The test suites in the test/src folder under **testing.universal** are by design
-intended to run on *either* CircuitPython *or* Micropython+compatibility layer to prove conformance.
+intended to run on *either* CircuitPython *or* CPython/Micropython+compatibility layer to prove conformance.
+
+Installing from PyPI
+=====================
+
+On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally `from
+PyPI <https://pypi.org/project/Adafruit-Blinka/>`_. To install for current user:
+
+.. code-block:: shell
+
+    pip3 install Adafruit-Blinka
+
+To install system-wide (this may be required in some cases):
+
+.. code-block:: shell
+
+    sudo pip3 install Adafruit-Blinka
+
+To install in a virtual environment in your current project:
+
+.. code-block:: shell
+
+    mkdir project-name && cd project-name
+    python3 -m venv .env
+    source .env/bin/activate
+    pip3 install Adafruit-Blinka
 
 Usage Example
 =============
 
-At the time of writing (`git:7fc1f8ab <https://github.com/cefn/Adafruit_Micropython_Blinka/tree/7fc1f8ab477124628a5afebbf6826005955805f9>`_),
-the following sequence runs through some basic testing of the digitalio compatibility layer...
+The pin names may vary by board, so you may need to change the pin names in the code. This
+example runs on the Raspberry Pi boards to blink an LED connected to GPIO 18 (Pin 12):
 
 .. code-block:: python
 
-    from testing import test_module_name
-    test_module_name("testing.universal.digitalio")
+    import time
+    import board
+    import digitalio
+
+    PIN = board.D18
+
+    print("hello blinky!")
 
-An example log from running the suites is `here <https://github.com/cefn/Adafruit_Micropython_Blinka/issues/2#issuecomment-366713394>`_ .
+    led = digitalio.DigitalInOut(PIN)
+    led.direction = digitalio.Direction.OUTPUT
 
+    while True:
+        led.value = True
+        time.sleep(0.5)
+        led.value = False
+        time.sleep(0.5)
 
 Contributing
 ============
@@ -73,7 +119,7 @@ install dependencies (feel free to reuse the virtual environment from above):
 
     python3 -m venv .env
     source .env/bin/activate
-    pip install Sphinx sphinx-rtd-theme
+    pip install Sphinx sphinx-rtd-theme Adafruit-PlatformDetect
 
 Now, once you have the virtual environment activated: