i2c scan and fake_mcp

adafruit · Apr 2, 2024 · 11d8e60 · 11d8e60
1 parent 0e0e0f1
commit 11d8e60
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/src/busio.py b/src/busio.py
@@ -9,6 +9,7 @@
 
 * Author(s): cefn
 """
+import os
 
 try:
     import threading
@@ -50,8 +51,10 @@ def init(self, scl, sda, frequency):
             self._i2c = _I2C(frequency=frequency)
             return
         if detector.board.microchip_mcp2221:
-            from adafruit_blinka.microcontroller.mcp2221.i2c import I2C as _I2C
-
+            if "BLINKA_FORCEBOARD" not in os.environ:
+                from adafruit_blinka.microcontroller.mcp2221.i2c import I2C as _I2C
+            elif os.environ["BLINKA_FORCEBOARD"] == "MICROCHIP_MCP2221":
+                from adafruit_blinka.microcontroller.fake_mcp2221.i2c import I2C as _I2C
             self._i2c = _I2C(frequency=frequency)
             return
         if detector.board.greatfet_one: