add pixels

[Adafruit_Blinka-hackapet.git] / src / adafruit_blinka / microcontroller / generic_agnostic_board / pin.py

diff --git a/src/adafruit_blinka/microcontroller/generic_agnostic_board/pin.py b/src/adafruit_blinka/microcontroller/generic_agnostic_board/pin.py
index c4ec8b9470e05ac1d384e2b099ac5c5b2d03f681..5830c30ef601bf17f6f52b6ef3892c0fdf082b99 100644 (file)
--- a/src/adafruit_blinka/microcontroller/generic_agnostic_board/pin.py
+++ b/src/adafruit_blinka/microcontroller/generic_agnostic_board/pin.py
@@ -4,8 +4,60 @@
 """generic_agnostic_board pin interface"""
 import random
 
 """generic_agnostic_board pin interface"""
 import random
 

+# Values for sine wave
+# (data points = 20, amplitude=100, frequency=1)
+sine_wave = [
+    0,
+    31,
+    59,
+    81,
+    95,
+    100,
+    95,
+    81,
+    59,
+    31,
+    0,
+    -31,
+    -59,
+    -81,
+    -95,
+    -100,
+    -95,
+    -81,
+    -59,
+    -31,
+]
+
+# Values for a sawtooth wave
+# (data points = 20, amplitude=100)
+sawtooth_wave = [
+    -100,
+    -80,
+    -60,
+    -40,
+    -20,
+    0,
+    20,
+    40,
+    60,
+    80,
+    -100,
+    -80,
+    -60,
+    -40,
+    -20,
+    0,
+    20,
+    40,
+    60,
+    80,
+]
+
+

 class Pin:
     """A basic Pin class for use with generic_agnostic_board"""
 class Pin:
     """A basic Pin class for use with generic_agnostic_board"""

+

     # pin modes
     OUT = 0
     IN = 1
     # pin modes
     OUT = 0
     IN = 1


@@ -14,63 +66,98 @@ class Pin:
     # pin values
     LOW = 0
     HIGH = 1
     # pin values
     LOW = 0
     HIGH = 1

+    # pin pulls
+    PULL_NONE = 0
+    PULL_UP = 1
+    PULL_DOWN = 2

 
 

-    expected_pin_behavior = {
-      'Dx_INPUT_TRUE': return_true,
-      'Dx_INPUT_FALSE': return_false,
-      'Dx_INPUT_TRUE_THEN_FALSE': return_toggle,
-      'Dx_INPUT_TRUE_PULL_UP': return_true,
-      'Dx_INPUT_TRUE_PULL_DOWN': return_true,
-      'Dx_OUTPUT_TRUE': return_true,
-      'Dx_OUTPUT_FALSE': return_true,
-      'Ax_INPUT_RAND_INT': return_random_int
-    }
+    # pylint: disable=no-self-use
+
+    def return_toggle(self):
+        """Returns the pin's expected value, toggling between True and False"""
+        toggle_state = not self.previous_value
+        return toggle_state
+
+    def return_false(self):
+        """Returns the pin's expected value, False"""
+        return False
+
+    def return_true(self):
+        """Returns the pin's expected value, True"""
+        return True
+
+    def return_random_int(self):
+        """Returns a random integer"""
+        return random.randint(0, 65535)
+
+    def return_fixed_int_pi(self):
+        """Returns the first five digits of Pi, 31415"""
+        return 31415
+
+    def return_sine_wave(self):
+        """Returns the next value in the sine wave"""
+        if self._wave_idx is None:
+            self._wave_idx = 0
+        else:
+            self._wave_idx = (self._wave_idx + 1) % len(sine_wave)
+        return sine_wave[self._wave_idx]
+
+    def return_sawtooth_wave(self):
+        """Returns the next value in the sawtooth wave"""
+        if self._wave_idx is None:
+            self._wave_idx = 0
+        else:
+            self._wave_idx = (self._wave_idx + 1) % len(sawtooth_wave)
+        return sawtooth_wave[self._wave_idx]

 
     def __init__(self, pin_id=None):
 
     def __init__(self, pin_id=None):

-      self.id = pin_id
-      self._mode = None
-      self.previous_value = None
-      self.current_value = None
+        self.id = pin_id
+        self._mode = None
+        self._pull = None
+        self.previous_value = False
+        self.current_value = None
+        self._wave_idx = None
+
+        # mapping of pin definition names to expected behavior
+        self.pin_behavior = {
+            0: self.return_true,  # Dx_INPUT_TRUE
+            1: self.return_false,  # Dx_INPUT_FALSE
+            2: self.return_true,  # Dx_INPUT_TRUE_PULL_UP
+            3: self.return_true,  # Dx_INPUT_TRUE_PULL_DOWN
+            4: self.return_true,  # Dx_OUTPUT
+            7: self.return_random_int,  # Ax_INPUT_RAND_INT
+            8: self.return_fixed_int_pi,  # Ax_INPUT_FIXED_INT_PI
+            9: self.return_sine_wave,  # Ax_INPUT_WAVE_SINE
+            10: self.return_sawtooth_wave,  # Ax_INPUT_WAVE_SAW
+            11: self.return_toggle,  # Dx_INPUT_TOGGLE
+        }

 
     def init(self, mode=IN, pull=None):
         """Initialize the Pin"""
         if self.id is None:
             raise RuntimeError("Can not init a None type pin.")
 
     def init(self, mode=IN, pull=None):
         """Initialize the Pin"""
         if self.id is None:
             raise RuntimeError("Can not init a None type pin.")

-        if pull is not None:
-            raise NotImplementedError("Internal pullups and pulldowns not supported")
+        pull = Pin.PULL_NONE if pull is None else pull
+        self._pull = pull

         self._mode = mode
 
     def write(self, new_value):
         self._mode = mode
 
     def write(self, new_value):

-      """Saves the new_value to the pin for subsequent calls to .value"""
-      self.previous_value = self.current_value
-      self.current_value = new_value
+        """Saves the new_value to the pin for subsequent calls to .value"""
+        self.previous_value = self.current_value
+        self.current_value = new_value

 
     def read(self):
 
     def read(self):

-      """Returns the pin's expected value."""
-      self.previous_value = self.current_value
-      self.current_value = self.expected_pin_behavior.get(self.pin_id)
-      return self.current_value
+        """Returns the pin's expected value."""
+        self.previous_value = self.current_value
+        # perform a lookup on the pin_behavior dict to get the value
+        self.current_value = self.pin_behavior.get(self.id)()

 
 

-    def return_toggle(self):
-      """Returns the pin's expected value, toggling between True and False"""
-      toggle_state = not self.previous_value
-      return toggle_state
-
-    def return_false(self):
-      """Returns the pin's expected value, False"""
-      return False
-
-    def return_true(self):
-      """Returns the pin's expected value, True"""
-      return True
-
-    def return_random_int(self):
-      """Returns a random integer"""
-      return random.randint(0, 65535)
-
-    def return_fixed_int_pi(self):
-      """Returns the first five digits of Pi, 31415"""
-      return 31415
+        # is pin a pull up and pin is LOW?
+        if self._pull == Pin.PULL_UP and self.current_value is False:
+            self.current_value = False
+        # is pin a pull down and pin is HIGH?
+        if self._pull == Pin.PULL_DOWN and self.current_value is True:
+            self.current_value = False
+        return self.current_value

 
     def value(self, val=None):
         """Set or return the Pin Value"""
 
     def value(self, val=None):
         """Set or return the Pin Value"""


@@ -93,10 +180,49 @@ class Pin:
         # Analog Out
         if self._mode == Pin.DAC:
             if val is None:
         # Analog Out
         if self._mode == Pin.DAC:
             if val is None:

-                # write only
-                raise AttributeError("unreadable attribute")
+                self.previous_value = self.current_value
+                return self.current_value

             self.write(val)
             return None
         raise RuntimeError(
             "No action for mode {} with value {}".format(self._mode, val)
         )
             self.write(val)
             return None
         raise RuntimeError(
             "No action for mode {} with value {}".format(self._mode, val)
         )

+
+
+# create pin instances for each pin
+D0 = Pin(0)
+D1 = Pin(1)
+D2 = Pin(2)
+D3 = Pin(3)
+D4 = Pin(4)
+# Special "digital" pins
+D6 = Pin(6)
+# Analog pins
+A0 = Pin(7)
+A1 = Pin(8)
+A2 = Pin(9)
+A3 = Pin(10)
+A4 = Pin(12)
+
+# Special digital pins for pixels
+D7 = Pin(11)
+D8 = Pin(13)
+D9 = Pin(14)
+
+# I2C pins
+SDA = Pin()
+SCL = Pin()
+
+# SPI pins
+SCLK = Pin()
+SCK = Pin()
+MOSI = Pin()
+MISO = Pin()
+CS = Pin()
+
+spiPorts = ((0, SCK, MOSI, MISO),)
+
+
+# UART pins
+UART_TX = Pin()
+UART_RX = Pin()