X-Git-Url: https://git.ayoreis.com/Adafruit_Blinka-hackapet.git/blobdiff_plain/41cdc3d72f6e55025d173bccc679e44d593ba8b7..b4e4beda872b5b932ddcea501e740fe3b252e16c:/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 c4ec8b9..1f6818e 100644
--- a/src/adafruit_blinka/microcontroller/generic_agnostic_board/pin.py
+++ b/src/adafruit_blinka/microcontroller/generic_agnostic_board/pin.py
@@ -4,8 +4,10 @@
 """generic_agnostic_board pin interface"""
 import random
 
+
 class Pin:
     """A basic Pin class for use with generic_agnostic_board"""
+
     # pin modes
     OUT = 0
     IN = 1
@@ -14,63 +16,85 @@ class Pin:
     # pin values
     LOW = 0
     HIGH = 1
+    # pin pulls
+    PULL_NONE = 0
+    PULL_UP = 1
+    PULL_DOWN = 2
+
+    def return_toggle(self):
+        """Returns the pin's expected value, toggling between True and False"""
+        toggle_state = not self.previous_value
+        return toggle_state
 
-    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
-    }
+    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 __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
+
+        # 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_TRUE
+            5: self.return_false,  # Dx_OUTPUT_FALSE
+            6: self.return_true,  # NEOPIXEL
+            7: self.return_random_int,  # Ax_INPUT_RAND_INT
+            8: self.return_fixed_int_pi,  # Ax_INPUT_FIXED_INT_PI
+            9: self.return_true,  # Ax_OUTPUT_WAVE_SINE
+            10: self.return_true,  # Ax_OUTPUT_WAVE_SAWTOOTH
+            11: self.return_toggle,  # Dx_INPUT_TOGGLE
+            # Add other mappings as needed
+        }
 
     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):
-      """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):
-      """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
-
-    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
+        print("\nread mode: ", self._mode)
+        """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_true(self):
-      """Returns the pin's expected value, True"""
-      return True
+        # is pin a pull up and pin is LOW?
+        if self._pull == Pin.PULL_UP and self.current_value == False:
+            self.current_value = True
+        # is pin a pull down and pin is HIGH?
+        if self._pull == Pin.PULL_DOWN and self.current_value == True:
+            print("switching PDR to False")
+            self.current_value = False
 
-    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
+        return self.current_value
 
     def value(self, val=None):
         """Set or return the Pin Value"""
@@ -100,3 +124,36 @@ class Pin:
         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)
+D5 = Pin(5)
+# Special "digital" pins
+D6 = Pin(6)
+# Analog pins
+A0 = Pin(7)
+A1 = Pin(8)
+A2 = Pin(9)
+A3 = Pin(10)
+
+D7 = Pin(11)
+
+# I2C pins
+SDA = Pin()
+SCL = Pin()
+
+# SPI pins
+SCLK = Pin()
+SCK = Pin()
+MOSI = Pin()
+MISO = Pin()
+CS = Pin()
+
+# UART pins
+UART_TX = Pin()
+UART_RX = Pin()