tests for dig in, an in, an out, dig out all passing

[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 a648502bd1ca27d81b5ccccff2ac8fbab178f23f..c52775926518aeed1e60e5ac1f3c4f135c55b7ce 100644 (file)
--- a/src/adafruit_blinka/microcontroller/generic_agnostic_board/pin.py
+++ b/src/adafruit_blinka/microcontroller/generic_agnostic_board/pin.py
@@ -4,6 +4,56 @@
 """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"""
@@ -42,12 +92,29 @@ class Pin:
         """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):
         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 = {
@@ -56,13 +123,11 @@ class Pin:
             2: self.return_true,  # Dx_INPUT_TRUE_PULL_UP
             3: self.return_true,  # Dx_INPUT_TRUE_PULL_DOWN
             4: self.return_true,  # Dx_OUTPUT
-            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
+            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
-            # Add other mappings as needed
         }
 
     def init(self, mode=IN, pull=None):
@@ -113,8 +178,8 @@ class Pin:
         # 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(
@@ -135,6 +200,7 @@ A0 = Pin(7)
 A1 = Pin(8)
 A2 = Pin(9)
 A3 = Pin(10)
+A4 = Pin(12)
 
 D7 = Pin(11)