add pico u2if

[Adafruit_Blinka-hackapet.git] / src / adafruit_blinka / microcontroller / pico_u2if / pin.py

diff --git a/src/adafruit_blinka/microcontroller/pico_u2if/pin.py b/src/adafruit_blinka/microcontroller/pico_u2if/pin.py
new file mode 100644 (file)
index 0000000..ef22587
--- /dev/null
+++ b/src/adafruit_blinka/microcontroller/pico_u2if/pin.py
@@ -0,0 +1,84 @@
+"""PICO pin names"""
+from .pico_u2if import pico_u2if
+
+
+class Pin:
+    """A basic Pin class for use with MCP2221."""
+
+    # pin modes
+    IN = 0
+    OUT = 1
+    # pin values
+    LOW = 0
+    HIGH = 1
+    # pin pulls
+    PULL_NONE = 0
+    PULL_UP = 1
+    PULL_DOWN = 2
+
+    def __init__(self, pin_id=None):
+        self.id = pin_id
+        self._mode = None
+        self._pull = None
+
+    def init(self, mode=IN, pull=PULL_NONE):
+        """Initialize the Pin"""
+        pull = Pin.PULL_NONE if pull is None else pull
+        if self.id is None:
+            raise RuntimeError("Can not init a None type pin.")
+        if mode not in (Pin.IN, Pin.OUT):
+            raise ValueError("Incorrect mode value.")
+        if pull not in (Pin.PULL_NONE, Pin.PULL_UP, Pin.PULL_DOWN):
+            raise ValueError("Incorrect pull value.")
+
+        pico_u2if.gpio_init_pin(self.id, mode, pull)
+
+        self._mode = mode
+        self._pull = pull
+
+    def value(self, val=None):
+        """Set or return the Pin Value"""
+        # Digital In / Out
+        if self._mode in (Pin.IN, Pin.OUT):
+            # digital read
+            if val is None:
+                return pico_u2if.gpio_get_pin(self.id)
+            # digital write
+            if val in (Pin.LOW, Pin.HIGH):
+                pico_u2if.gpio_set_pin(self.id, val)
+                return None
+            # nope
+            raise ValueError("Invalid value for pin.")
+
+        raise RuntimeError(
+            "No action for mode {} with value {}".format(self._mode, val)
+        )
+
+
+# create pin instances for each pin
+GP0 = Pin(0)
+GP1 = Pin(1)
+GP2 = Pin(2)
+GP3 = Pin(3)
+GP4 = Pin(4)
+GP5 = Pin(5)
+GP6 = Pin(6)
+GP7 = Pin(7)
+GP8 = Pin(8)
+GP9 = Pin(9)
+GP10 = Pin(10)
+GP11 = Pin(11)
+GP12 = Pin(12)
+GP13 = Pin(13)
+GP14 = Pin(14)
+GP15 = Pin(15)
+GP16 = Pin(16)
+GP17 = Pin(17)
+GP18 = Pin(18)
+GP19 = Pin(19)
+GP20 = Pin(20)
+GP21 = Pin(21)
+GP22 = Pin(22)
+GP26 = Pin(26)
+GP27 = Pin(27)
+GP28 = Pin(28)