add i2c scanning

[hackapet/Adafruit_Blinka.git] / src / busio.py

diff --git a/src/busio.py b/src/busio.py
index 6c5e76f2cab5bb2352bae07d20ea848a0dbdd302..3d786acefbf3e043ef4f8e73df578608b32d68be 100755 (executable)
--- a/src/busio.py
+++ b/src/busio.py
@@ -8,6 +8,7 @@ See `CircuitPython:busio` in CircuitPython for more details.
 """
 
 from adafruit_blinka import Enum, Lockable, agnostic
+from adafruit_blinka.agnostic import board as boardId
 
 class I2C(Lockable):
     def __init__(self, scl, sda, frequency=400000):
@@ -15,11 +16,14 @@ class I2C(Lockable):
 
     def init(self, scl, sda, frequency):
         self.deinit()
-        from machine import I2C as _I2C
+        if boardId == "raspi_3" or boardId == "raspi_2":
+            from adafruit_blinka.microcontroller.raspi_23.i2c import I2C as _I2C
+        else:
+            from machine import I2C as _I2C
         from microcontroller.pin import i2cPorts
         for portId, portScl, portSda in i2cPorts:
             if scl == portScl and sda == portSda:
-                self._i2c = I2C(portId, mode=_I2C.MASTER, baudrate=frequency)
+                self._i2c = _I2C(portId, mode=_I2C.MASTER, baudrate=frequency)
                 break
         else:
             raise NotImplementedError("No Hardware I2C on (scl,sda)={}\nValid UART ports".format(