X-Git-Url: https://git.ayoreis.com/Adafruit_Blinka-hackapet.git/blobdiff_plain/22e03b686ec9ff0eb7bd11985d55cb33b525672f..e581ddf6e329e49b0c7c48c3c0ac967aa6a30571:/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 3ff957d..c527759 100644
--- a/src/adafruit_blinka/microcontroller/generic_agnostic_board/pin.py
+++ b/src/adafruit_blinka/microcontroller/generic_agnostic_board/pin.py
@@ -125,8 +125,8 @@ class Pin:
             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_OUTPUT_WAVE_SINE
-            10: self.return_sawtooth_wave,  # Ax_OUTPUT_WAVE_SAW
+            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
         }
 
@@ -178,8 +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(
@@ -200,6 +200,7 @@ A0 = Pin(7)
 A1 = Pin(8)
 A2 = Pin(9)
 A3 = Pin(10)
+A4 = Pin(12)
 
 D7 = Pin(11)